Conference Coverage

For patients with ST-elevated myocardial infarction (STEMI) undergoing complete revascularization, percutaneous coronary interventions (PCI) guided by fractional flow reserve (FFR) relative to angiography-guided PCI do not result in significantly lower risk of death or events, according to data from the randomized FLOWER-MI trial.

Wolfgang Filser/EyeEm/Getty Images

Rather, the events at 1 year were numerically lower among those randomized to the angiography-guided approach, according to the principal investigator of the trial, Etienne Puymirat, MD, PhD.

Prior studies showing an advantage for FFR-guided PCI in patients with coronary syndromes provided the hypothesis that FFR-guided PCI would also be superior for guiding PCI in STEMI patients. In the multicenter FAME trial, for example, FFR-guided PCI for patients with multivessel disease was associated with fewer stent placements (P < .001) and a nearly 30% lower rate of events at 1 year (P = .02).

While the advantage of complete revascularization, meaning PCI treatment of nonculprit as well as culprit lesions, has already been shown to be a better strategy than treatment of culprit lesions alone, FLOWER-MI is the first large study to compare FFR to angiography for guiding this approach to STEMI patients with multivessel disease, said Dr. Puymirat of Hôpital Européen George Pompidou, Paris, at the annual scientific sessions of the American College of Cardiology.

In this trial, involving multiple centers in France, STEMI patients were eligible for randomization if they had successful PCI of a culprit lesion and 50% or greater stenosis in at least one additional nonculprit lesion. The complete revascularization, whether patients were randomized to PCI guided by angiography or FFR, was performed during the index hospital admission. Patient management and follow-up was otherwise the same.

After a small number of exclusions, the intention-to-treat populations were 577 patients in the angiography-guided group and 586 in the FFR-guided group. The characteristics of the groups were well matched with an average age of about 62 years and similar rates of risk factors, such as hypertension and diabetes.

Angiography guidance just as good

The primary outcome was a composite of all-cause mortality, nonfatal MI, and unplanned revascularization. By hazard ratio, the risk of having one of these events within 1 year of PCI was numerically greater, at 32 in the FFR-guided group and 24 in the angiography-guided group, but the difference was not statistically significant (1.32; P = .31).

However, the total rate of events was low (5.5% vs. 4.2% for the angiography-guided and FFR-guided groups, respectively) and the confidence intervals were wide (95% CI, 0.78-2.23). This was also true of the components of the primary outcome.

No signal for a difference between strategies could be derived from these components, which included a higher rate of MI in the FFR-guided group (3.1% vs. 1.7%) but a lower rate of death (1.5% vs. 1.7%).

Unplanned hospitalizations leading to revascularization rates were also low (1.9% and 2.6% for angiography-guided and FFR-guided PCI, respectively), although it was reported that the rate of revascularization for nonculprit lesions was about twice as high in the FFR group (53.3% vs. 27.3%).

At 1 year, there were also low rates and no significant differences in a list of secondary outcomes that included hospitalization for recurrent ischemia or heart failure, stent thrombosis, and revascularization. As within the primary composite outcome, no pattern could be seen in the secondary events, some of which were numerically more common in the FFR-guided group and some numerically lower.

In a cost-efficacy analysis, the median per-patient cost of the FFR-guided strategy was about 500 Euros ($607) greater (8,832 vs. 8,322; P < .01), leading Dr. Puymirat to conclude that “the use of FFR for nonculprit lesions appears to be less effective but more expensive,” at least by costs derived in France.

Lack of statistical power limits interpretation

The conclusion of FLOWER-MI is that FFR-guided PCI in complete revascularization of nonculprit lesions in STEMI patients is not superior to an angiography-guided approach, but Dr. Puymirat cautioned that the low number of events precludes a definitive message.

William Fearon, MD, professor of cardiovascular medicine at Stanford (Calif.) University Medical Center, agreed. Based on his calculations, the trial was substantially underpowered. Evaluating the details of treatment in the FFR group, Dr. Fearon pointed out that a nonculprit lesion with a FFR of 0.80 or less was identified in about 55% of patients. Ultimately, 66% in the FFR group received PCI, eliminating the key distinction between strategies for the majority of patients enrolled.

“Only about one-third of the FFR-guided patients, or about 200 patients, did not receive nonculprit PCI, and therefore only in this small group could we expect a difference in outcomes from the angio-guided group,” Dr. Fearon said.

Fewer stents were placed in the FFR-guided than angiography-guided group (1.01 vs. 1.5), but Dr. Fearon suggested that it would be very difficult to show a difference in risk of events in a study of this size when event rates at 1 year reached only about 5%.

In response, Dr. Puymirat acknowledged that the rate of events for this trial, which was designed in 2015, were lower than expected. In recalculating the power needed based on the rate of events observed in FLOWER-MI, he estimated that about 8,000 patients would have been needed to show a meaningful difference in these PCI strategies.

Dr. Puymirat reports financial relationships with more than a dozen pharmaceutical companies, including Abbott, which provided some of the funding for this trial. Dr. Fearon reports financial relationships with Abbott, CathWorks, HeartFlow, and Medtronic.

For patients with ST-elevated myocardial infarction (STEMI) undergoing complete revascularization, percutaneous coronary interventions (PCI) guided by fractional flow reserve (FFR) relative to angiography-guided PCI do not result in significantly lower risk of death or events, according to data from the randomized FLOWER-MI trial.

Wolfgang Filser/EyeEm/Getty Images

Rather, the events at 1 year were numerically lower among those randomized to the angiography-guided approach, according to the principal investigator of the trial, Etienne Puymirat, MD, PhD.

Prior studies showing an advantage for FFR-guided PCI in patients with coronary syndromes provided the hypothesis that FFR-guided PCI would also be superior for guiding PCI in STEMI patients. In the multicenter FAME trial, for example, FFR-guided PCI for patients with multivessel disease was associated with fewer stent placements (P < .001) and a nearly 30% lower rate of events at 1 year (P = .02).

While the advantage of complete revascularization, meaning PCI treatment of nonculprit as well as culprit lesions, has already been shown to be a better strategy than treatment of culprit lesions alone, FLOWER-MI is the first large study to compare FFR to angiography for guiding this approach to STEMI patients with multivessel disease, said Dr. Puymirat of Hôpital Européen George Pompidou, Paris, at the annual scientific sessions of the American College of Cardiology.

In this trial, involving multiple centers in France, STEMI patients were eligible for randomization if they had successful PCI of a culprit lesion and 50% or greater stenosis in at least one additional nonculprit lesion. The complete revascularization, whether patients were randomized to PCI guided by angiography or FFR, was performed during the index hospital admission. Patient management and follow-up was otherwise the same.

After a small number of exclusions, the intention-to-treat populations were 577 patients in the angiography-guided group and 586 in the FFR-guided group. The characteristics of the groups were well matched with an average age of about 62 years and similar rates of risk factors, such as hypertension and diabetes.

Angiography guidance just as good

The primary outcome was a composite of all-cause mortality, nonfatal MI, and unplanned revascularization. By hazard ratio, the risk of having one of these events within 1 year of PCI was numerically greater, at 32 in the FFR-guided group and 24 in the angiography-guided group, but the difference was not statistically significant (1.32; P = .31).

However, the total rate of events was low (5.5% vs. 4.2% for the angiography-guided and FFR-guided groups, respectively) and the confidence intervals were wide (95% CI, 0.78-2.23). This was also true of the components of the primary outcome.

No signal for a difference between strategies could be derived from these components, which included a higher rate of MI in the FFR-guided group (3.1% vs. 1.7%) but a lower rate of death (1.5% vs. 1.7%).

Unplanned hospitalizations leading to revascularization rates were also low (1.9% and 2.6% for angiography-guided and FFR-guided PCI, respectively), although it was reported that the rate of revascularization for nonculprit lesions was about twice as high in the FFR group (53.3% vs. 27.3%).

At 1 year, there were also low rates and no significant differences in a list of secondary outcomes that included hospitalization for recurrent ischemia or heart failure, stent thrombosis, and revascularization. As within the primary composite outcome, no pattern could be seen in the secondary events, some of which were numerically more common in the FFR-guided group and some numerically lower.

In a cost-efficacy analysis, the median per-patient cost of the FFR-guided strategy was about 500 Euros ($607) greater (8,832 vs. 8,322; P < .01), leading Dr. Puymirat to conclude that “the use of FFR for nonculprit lesions appears to be less effective but more expensive,” at least by costs derived in France.

Lack of statistical power limits interpretation

The conclusion of FLOWER-MI is that FFR-guided PCI in complete revascularization of nonculprit lesions in STEMI patients is not superior to an angiography-guided approach, but Dr. Puymirat cautioned that the low number of events precludes a definitive message.

William Fearon, MD, professor of cardiovascular medicine at Stanford (Calif.) University Medical Center, agreed. Based on his calculations, the trial was substantially underpowered. Evaluating the details of treatment in the FFR group, Dr. Fearon pointed out that a nonculprit lesion with a FFR of 0.80 or less was identified in about 55% of patients. Ultimately, 66% in the FFR group received PCI, eliminating the key distinction between strategies for the majority of patients enrolled.

“Only about one-third of the FFR-guided patients, or about 200 patients, did not receive nonculprit PCI, and therefore only in this small group could we expect a difference in outcomes from the angio-guided group,” Dr. Fearon said.

Fewer stents were placed in the FFR-guided than angiography-guided group (1.01 vs. 1.5), but Dr. Fearon suggested that it would be very difficult to show a difference in risk of events in a study of this size when event rates at 1 year reached only about 5%.

In response, Dr. Puymirat acknowledged that the rate of events for this trial, which was designed in 2015, were lower than expected. In recalculating the power needed based on the rate of events observed in FLOWER-MI, he estimated that about 8,000 patients would have been needed to show a meaningful difference in these PCI strategies.

Dr. Puymirat reports financial relationships with more than a dozen pharmaceutical companies, including Abbott, which provided some of the funding for this trial. Dr. Fearon reports financial relationships with Abbott, CathWorks, HeartFlow, and Medtronic.

For patients with ST-elevated myocardial infarction (STEMI) undergoing complete revascularization, percutaneous coronary interventions (PCI) guided by fractional flow reserve (FFR) relative to angiography-guided PCI do not result in significantly lower risk of death or events, according to data from the randomized FLOWER-MI trial.

Wolfgang Filser/EyeEm/Getty Images

Rather, the events at 1 year were numerically lower among those randomized to the angiography-guided approach, according to the principal investigator of the trial, Etienne Puymirat, MD, PhD.

Prior studies showing an advantage for FFR-guided PCI in patients with coronary syndromes provided the hypothesis that FFR-guided PCI would also be superior for guiding PCI in STEMI patients. In the multicenter FAME trial, for example, FFR-guided PCI for patients with multivessel disease was associated with fewer stent placements (P < .001) and a nearly 30% lower rate of events at 1 year (P = .02).

While the advantage of complete revascularization, meaning PCI treatment of nonculprit as well as culprit lesions, has already been shown to be a better strategy than treatment of culprit lesions alone, FLOWER-MI is the first large study to compare FFR to angiography for guiding this approach to STEMI patients with multivessel disease, said Dr. Puymirat of Hôpital Européen George Pompidou, Paris, at the annual scientific sessions of the American College of Cardiology.

In this trial, involving multiple centers in France, STEMI patients were eligible for randomization if they had successful PCI of a culprit lesion and 50% or greater stenosis in at least one additional nonculprit lesion. The complete revascularization, whether patients were randomized to PCI guided by angiography or FFR, was performed during the index hospital admission. Patient management and follow-up was otherwise the same.

After a small number of exclusions, the intention-to-treat populations were 577 patients in the angiography-guided group and 586 in the FFR-guided group. The characteristics of the groups were well matched with an average age of about 62 years and similar rates of risk factors, such as hypertension and diabetes.

Angiography guidance just as good

The primary outcome was a composite of all-cause mortality, nonfatal MI, and unplanned revascularization. By hazard ratio, the risk of having one of these events within 1 year of PCI was numerically greater, at 32 in the FFR-guided group and 24 in the angiography-guided group, but the difference was not statistically significant (1.32; P = .31).

However, the total rate of events was low (5.5% vs. 4.2% for the angiography-guided and FFR-guided groups, respectively) and the confidence intervals were wide (95% CI, 0.78-2.23). This was also true of the components of the primary outcome.

No signal for a difference between strategies could be derived from these components, which included a higher rate of MI in the FFR-guided group (3.1% vs. 1.7%) but a lower rate of death (1.5% vs. 1.7%).

Unplanned hospitalizations leading to revascularization rates were also low (1.9% and 2.6% for angiography-guided and FFR-guided PCI, respectively), although it was reported that the rate of revascularization for nonculprit lesions was about twice as high in the FFR group (53.3% vs. 27.3%).

At 1 year, there were also low rates and no significant differences in a list of secondary outcomes that included hospitalization for recurrent ischemia or heart failure, stent thrombosis, and revascularization. As within the primary composite outcome, no pattern could be seen in the secondary events, some of which were numerically more common in the FFR-guided group and some numerically lower.

In a cost-efficacy analysis, the median per-patient cost of the FFR-guided strategy was about 500 Euros ($607) greater (8,832 vs. 8,322; P < .01), leading Dr. Puymirat to conclude that “the use of FFR for nonculprit lesions appears to be less effective but more expensive,” at least by costs derived in France.

Lack of statistical power limits interpretation

The conclusion of FLOWER-MI is that FFR-guided PCI in complete revascularization of nonculprit lesions in STEMI patients is not superior to an angiography-guided approach, but Dr. Puymirat cautioned that the low number of events precludes a definitive message.

William Fearon, MD, professor of cardiovascular medicine at Stanford (Calif.) University Medical Center, agreed. Based on his calculations, the trial was substantially underpowered. Evaluating the details of treatment in the FFR group, Dr. Fearon pointed out that a nonculprit lesion with a FFR of 0.80 or less was identified in about 55% of patients. Ultimately, 66% in the FFR group received PCI, eliminating the key distinction between strategies for the majority of patients enrolled.

“Only about one-third of the FFR-guided patients, or about 200 patients, did not receive nonculprit PCI, and therefore only in this small group could we expect a difference in outcomes from the angio-guided group,” Dr. Fearon said.

Fewer stents were placed in the FFR-guided than angiography-guided group (1.01 vs. 1.5), but Dr. Fearon suggested that it would be very difficult to show a difference in risk of events in a study of this size when event rates at 1 year reached only about 5%.

In response, Dr. Puymirat acknowledged that the rate of events for this trial, which was designed in 2015, were lower than expected. In recalculating the power needed based on the rate of events observed in FLOWER-MI, he estimated that about 8,000 patients would have been needed to show a meaningful difference in these PCI strategies.

Dr. Puymirat reports financial relationships with more than a dozen pharmaceutical companies, including Abbott, which provided some of the funding for this trial. Dr. Fearon reports financial relationships with Abbott, CathWorks, HeartFlow, and Medtronic.

Significant improvement in the control of symptoms related to paroxysmal supraventricular tachycardia (PSVT) is resurrecting etripamil as a self-administered nasal spray a year after it failed to meet the primary endpoint in a phase 3 trial, according to a new analysis from this same study presented at the annual scientific sessions of the American College of Cardiology.

Thinkstock

In the phase 3 NODE-301 trial, presented at the 2020 Heart Rhythm Society annual meeting, etripamil did not show an advantage over placebo at 5 hours for achieving sinus rhythm. Nevertheless, a new presentation of the secondary outcomes suggests substantial clinical benefit.

These advantages include significant reductions in PSVT symptoms, a trend for fewer emergency room visits, and a degree of patient satisfaction that appears meaningful, according to Bruce S. Stambler, MD, an electrophysiologist affiliated with Piedmont Heart Institute, Atlanta.

The data, despite the phase 3 trial results, “support continued development of etripamil nasal spray acute treatment of PSVT,” Dr. Stambler said.
Etripamil is an L-type calcium channel blocker. When administered by nasal spray, it reaches peak effects within about 10 minutes. But the action is short, with a decline in antiarrhythmia effects beginning about 30 minutes after the peak effect. 

In the NODE-301 trial, which employed a 2:1 randomization ratio, 138 patients self-administered 70 mg of etripamil or placebo immediately upon experiencing a suspected episode of PSVT.

Up until 45 minutes, the proportion of episodes that converted to sinus rhythm was about 66% greater (hazard ratio, 1.66; P = .02) on etripamil than placebo, but the advantage was then lost. By predefined primary endpoint of 5 hours, when 100% of placebo patients but not all etripamil patients had converted, there was a slight but nonstatistical advantage for placebo (HR 1.08; P = .1212).

However, because of the rapid onset and then the rapid offset of this agent, the 5-hour time point for comparing effects might not have been the optimal duration to compare effects, according to Dr. Stambler.

On the basis of safety of etripamil, which was not associated with any significant adverse events in NODE-301, and the early clinical effect, the investigators have looked again at the data.

For relief of patient-reported symptoms and patient-reported satisfaction, which were secondary endpoints of the study, the data support a clinical role, according to this new analysis. 

Specifically, there were large differences on a 7-point scale for all of the measured symptoms of PSVT in favor of etripamil, including rapid pulse (P = .002), palpitations (P = .0001), dizziness (P = 0.01), shortness of breath (P = 0.008), and anxiety (P = 0.006). A numerical advantage for chest pain did not reach significance.

“In general, patients reported scores of 4 to 5 on this scale, which corresponds to ‘not satisfied’ to ‘satisfied,’ while the placebo-treated patients reported scores of 2 to 3, which corresponds to ‘dissatisfied’ or ‘very dissatisfied,’ ” Dr. Stambler reported.

The favorable patient experience is also reflected in the Treatment Satisfaction with Questionnaire for Medication (TSQM-9), which was another NODE-301 endpoint. Evaluated when patients were still blinded to their assigned therapy, the advantage of etripamil over placebo for both global satisfaction (P = .007) and treatment effectiveness (P = .002) were also highly statistically significant.

The subjective experience of patients appeared to be reflected in objective measures. When the two groups were compared for interventions in an emergency room, the need was reduced by about half (12.1% vs. 24.5%; P = .051) among those treated with etripamil. Although this just missed the conventional measure of statistical significance, it was close. Similarly, patients randomized to etripamil required numerically fewer rescue medications (14.0% vs. 26.5%; P = .059). 

Adenosine was the most common of the rescue medications, according to Dr. Stambler. He said there was no difference between the groups in use of rescue oral therapies.

When comparing etripamil and placebo in the subgroup that did visit an emergency room for PSVT, there was a delay in ER visits among those randomized to etripamil (116 vs. 79 minutes; P < 0.05), suggesting that this agent reduced the sense of urgency when PSVT symptoms develop, according to Dr. Stambler.

On average, the patients who enrolled in this trial had a PSVT history of about 1.5 years. In the year prior to enrollment, the mean number of ER visits was about nine. 

In the trial design, patients were required to take a test dose of etripamil under observation by a physician before being sent home with their assigned therapy, but Dr. Stambler does not believe that the requirement, if the drug is approved, will be in the label. 

Unexpectedly, many patients had symptom relief even without converting to sinus rhythm, Dr. Stambler acknowledged. He speculated that the reduction in heart rate associated with etripamil might have provided a relief of symptoms sufficient to relieve anxiety, producing the relative advantage for patient satisfaction.

Jodie L. Hurwitz, MD, director of the electrophysiology lab at Medical City Hospital, Dallas, indicated that there is a need for new options for PSVT. An expert panelist during the session where these data were presented, she was particularly interested in rapid symptom relief. 

“It would be great to have a therapy that could be self-administered at home. Patients would like it, too,” she said. 

Mary N. Walsh, MD, a heart failure specialist affiliated with Indiana University, Indianapolis, sees a potential role of a self-administered therapy like etripamil in conjunction with wearable devices. She noted that the proportion of patients using these devices to monitor arrhythmias is increasing, providing a role for an easily transportable therapy that could be used quickly when symptoms develop. 

However, after the negative phase 3 trial, more data must now be collected to satisfy the regulatory authorities that this agent is safe and effective. Dr. Stambler said that the developer is now committed to pursue these studies.

Dr. Stambler has a financial relationship with Milestone Pharmaceuticals, which is developing etripamil nasal spray and was the sponsor of this trial. Dr. Walsh and Dr. Hurwitz have no potential relevant conflicts of interest.
 

Significant improvement in the control of symptoms related to paroxysmal supraventricular tachycardia (PSVT) is resurrecting etripamil as a self-administered nasal spray a year after it failed to meet the primary endpoint in a phase 3 trial, according to a new analysis from this same study presented at the annual scientific sessions of the American College of Cardiology.

Thinkstock

In the phase 3 NODE-301 trial, presented at the 2020 Heart Rhythm Society annual meeting, etripamil did not show an advantage over placebo at 5 hours for achieving sinus rhythm. Nevertheless, a new presentation of the secondary outcomes suggests substantial clinical benefit.

These advantages include significant reductions in PSVT symptoms, a trend for fewer emergency room visits, and a degree of patient satisfaction that appears meaningful, according to Bruce S. Stambler, MD, an electrophysiologist affiliated with Piedmont Heart Institute, Atlanta.

The data, despite the phase 3 trial results, “support continued development of etripamil nasal spray acute treatment of PSVT,” Dr. Stambler said.
Etripamil is an L-type calcium channel blocker. When administered by nasal spray, it reaches peak effects within about 10 minutes. But the action is short, with a decline in antiarrhythmia effects beginning about 30 minutes after the peak effect. 

In the NODE-301 trial, which employed a 2:1 randomization ratio, 138 patients self-administered 70 mg of etripamil or placebo immediately upon experiencing a suspected episode of PSVT.

Up until 45 minutes, the proportion of episodes that converted to sinus rhythm was about 66% greater (hazard ratio, 1.66; P = .02) on etripamil than placebo, but the advantage was then lost. By predefined primary endpoint of 5 hours, when 100% of placebo patients but not all etripamil patients had converted, there was a slight but nonstatistical advantage for placebo (HR 1.08; P = .1212).

However, because of the rapid onset and then the rapid offset of this agent, the 5-hour time point for comparing effects might not have been the optimal duration to compare effects, according to Dr. Stambler.

On the basis of safety of etripamil, which was not associated with any significant adverse events in NODE-301, and the early clinical effect, the investigators have looked again at the data.

For relief of patient-reported symptoms and patient-reported satisfaction, which were secondary endpoints of the study, the data support a clinical role, according to this new analysis. 

Specifically, there were large differences on a 7-point scale for all of the measured symptoms of PSVT in favor of etripamil, including rapid pulse (P = .002), palpitations (P = .0001), dizziness (P = 0.01), shortness of breath (P = 0.008), and anxiety (P = 0.006). A numerical advantage for chest pain did not reach significance.

“In general, patients reported scores of 4 to 5 on this scale, which corresponds to ‘not satisfied’ to ‘satisfied,’ while the placebo-treated patients reported scores of 2 to 3, which corresponds to ‘dissatisfied’ or ‘very dissatisfied,’ ” Dr. Stambler reported.

The favorable patient experience is also reflected in the Treatment Satisfaction with Questionnaire for Medication (TSQM-9), which was another NODE-301 endpoint. Evaluated when patients were still blinded to their assigned therapy, the advantage of etripamil over placebo for both global satisfaction (P = .007) and treatment effectiveness (P = .002) were also highly statistically significant.

The subjective experience of patients appeared to be reflected in objective measures. When the two groups were compared for interventions in an emergency room, the need was reduced by about half (12.1% vs. 24.5%; P = .051) among those treated with etripamil. Although this just missed the conventional measure of statistical significance, it was close. Similarly, patients randomized to etripamil required numerically fewer rescue medications (14.0% vs. 26.5%; P = .059). 

Adenosine was the most common of the rescue medications, according to Dr. Stambler. He said there was no difference between the groups in use of rescue oral therapies.

When comparing etripamil and placebo in the subgroup that did visit an emergency room for PSVT, there was a delay in ER visits among those randomized to etripamil (116 vs. 79 minutes; P < 0.05), suggesting that this agent reduced the sense of urgency when PSVT symptoms develop, according to Dr. Stambler.

On average, the patients who enrolled in this trial had a PSVT history of about 1.5 years. In the year prior to enrollment, the mean number of ER visits was about nine. 

In the trial design, patients were required to take a test dose of etripamil under observation by a physician before being sent home with their assigned therapy, but Dr. Stambler does not believe that the requirement, if the drug is approved, will be in the label. 

Unexpectedly, many patients had symptom relief even without converting to sinus rhythm, Dr. Stambler acknowledged. He speculated that the reduction in heart rate associated with etripamil might have provided a relief of symptoms sufficient to relieve anxiety, producing the relative advantage for patient satisfaction.

Jodie L. Hurwitz, MD, director of the electrophysiology lab at Medical City Hospital, Dallas, indicated that there is a need for new options for PSVT. An expert panelist during the session where these data were presented, she was particularly interested in rapid symptom relief. 

“It would be great to have a therapy that could be self-administered at home. Patients would like it, too,” she said. 

Mary N. Walsh, MD, a heart failure specialist affiliated with Indiana University, Indianapolis, sees a potential role of a self-administered therapy like etripamil in conjunction with wearable devices. She noted that the proportion of patients using these devices to monitor arrhythmias is increasing, providing a role for an easily transportable therapy that could be used quickly when symptoms develop. 

However, after the negative phase 3 trial, more data must now be collected to satisfy the regulatory authorities that this agent is safe and effective. Dr. Stambler said that the developer is now committed to pursue these studies.

Dr. Stambler has a financial relationship with Milestone Pharmaceuticals, which is developing etripamil nasal spray and was the sponsor of this trial. Dr. Walsh and Dr. Hurwitz have no potential relevant conflicts of interest.
 

Significant improvement in the control of symptoms related to paroxysmal supraventricular tachycardia (PSVT) is resurrecting etripamil as a self-administered nasal spray a year after it failed to meet the primary endpoint in a phase 3 trial, according to a new analysis from this same study presented at the annual scientific sessions of the American College of Cardiology.

Thinkstock

In the phase 3 NODE-301 trial, presented at the 2020 Heart Rhythm Society annual meeting, etripamil did not show an advantage over placebo at 5 hours for achieving sinus rhythm. Nevertheless, a new presentation of the secondary outcomes suggests substantial clinical benefit.

These advantages include significant reductions in PSVT symptoms, a trend for fewer emergency room visits, and a degree of patient satisfaction that appears meaningful, according to Bruce S. Stambler, MD, an electrophysiologist affiliated with Piedmont Heart Institute, Atlanta.

The data, despite the phase 3 trial results, “support continued development of etripamil nasal spray acute treatment of PSVT,” Dr. Stambler said.
Etripamil is an L-type calcium channel blocker. When administered by nasal spray, it reaches peak effects within about 10 minutes. But the action is short, with a decline in antiarrhythmia effects beginning about 30 minutes after the peak effect. 

In the NODE-301 trial, which employed a 2:1 randomization ratio, 138 patients self-administered 70 mg of etripamil or placebo immediately upon experiencing a suspected episode of PSVT.

Up until 45 minutes, the proportion of episodes that converted to sinus rhythm was about 66% greater (hazard ratio, 1.66; P = .02) on etripamil than placebo, but the advantage was then lost. By predefined primary endpoint of 5 hours, when 100% of placebo patients but not all etripamil patients had converted, there was a slight but nonstatistical advantage for placebo (HR 1.08; P = .1212).

However, because of the rapid onset and then the rapid offset of this agent, the 5-hour time point for comparing effects might not have been the optimal duration to compare effects, according to Dr. Stambler.

On the basis of safety of etripamil, which was not associated with any significant adverse events in NODE-301, and the early clinical effect, the investigators have looked again at the data.

For relief of patient-reported symptoms and patient-reported satisfaction, which were secondary endpoints of the study, the data support a clinical role, according to this new analysis. 

Specifically, there were large differences on a 7-point scale for all of the measured symptoms of PSVT in favor of etripamil, including rapid pulse (P = .002), palpitations (P = .0001), dizziness (P = 0.01), shortness of breath (P = 0.008), and anxiety (P = 0.006). A numerical advantage for chest pain did not reach significance.

“In general, patients reported scores of 4 to 5 on this scale, which corresponds to ‘not satisfied’ to ‘satisfied,’ while the placebo-treated patients reported scores of 2 to 3, which corresponds to ‘dissatisfied’ or ‘very dissatisfied,’ ” Dr. Stambler reported.

The favorable patient experience is also reflected in the Treatment Satisfaction with Questionnaire for Medication (TSQM-9), which was another NODE-301 endpoint. Evaluated when patients were still blinded to their assigned therapy, the advantage of etripamil over placebo for both global satisfaction (P = .007) and treatment effectiveness (P = .002) were also highly statistically significant.

The subjective experience of patients appeared to be reflected in objective measures. When the two groups were compared for interventions in an emergency room, the need was reduced by about half (12.1% vs. 24.5%; P = .051) among those treated with etripamil. Although this just missed the conventional measure of statistical significance, it was close. Similarly, patients randomized to etripamil required numerically fewer rescue medications (14.0% vs. 26.5%; P = .059). 

Adenosine was the most common of the rescue medications, according to Dr. Stambler. He said there was no difference between the groups in use of rescue oral therapies.

When comparing etripamil and placebo in the subgroup that did visit an emergency room for PSVT, there was a delay in ER visits among those randomized to etripamil (116 vs. 79 minutes; P < 0.05), suggesting that this agent reduced the sense of urgency when PSVT symptoms develop, according to Dr. Stambler.

On average, the patients who enrolled in this trial had a PSVT history of about 1.5 years. In the year prior to enrollment, the mean number of ER visits was about nine. 

In the trial design, patients were required to take a test dose of etripamil under observation by a physician before being sent home with their assigned therapy, but Dr. Stambler does not believe that the requirement, if the drug is approved, will be in the label. 

Unexpectedly, many patients had symptom relief even without converting to sinus rhythm, Dr. Stambler acknowledged. He speculated that the reduction in heart rate associated with etripamil might have provided a relief of symptoms sufficient to relieve anxiety, producing the relative advantage for patient satisfaction.

Jodie L. Hurwitz, MD, director of the electrophysiology lab at Medical City Hospital, Dallas, indicated that there is a need for new options for PSVT. An expert panelist during the session where these data were presented, she was particularly interested in rapid symptom relief. 

“It would be great to have a therapy that could be self-administered at home. Patients would like it, too,” she said. 

Mary N. Walsh, MD, a heart failure specialist affiliated with Indiana University, Indianapolis, sees a potential role of a self-administered therapy like etripamil in conjunction with wearable devices. She noted that the proportion of patients using these devices to monitor arrhythmias is increasing, providing a role for an easily transportable therapy that could be used quickly when symptoms develop. 

However, after the negative phase 3 trial, more data must now be collected to satisfy the regulatory authorities that this agent is safe and effective. Dr. Stambler said that the developer is now committed to pursue these studies.

Dr. Stambler has a financial relationship with Milestone Pharmaceuticals, which is developing etripamil nasal spray and was the sponsor of this trial. Dr. Walsh and Dr. Hurwitz have no potential relevant conflicts of interest.
 

Left atrial appendage occlusion performed at the time of other heart surgery reduces the risk for stroke by about one-third in high-risk patients with atrial fibrillation (AFib), according to results of the Left Atrial Appendage Occlusion Study III (LAAOS III).

At 3.8 years’ follow-up, the primary endpoint of ischemic stroke or systemic embolism occurred in 4.8% of patients randomly assigned to left atrial appendage occlusion (LAAO) and 7.0% of those with no occlusion. This translated into a 33% relative risk reduction (hazard ratio, 0.67; 95% confidence interval, 0.53-0.85; P = .001).

In a landmark analysis, the effect was present early on but was more pronounced after the first 30 days, reducing the relative risk by 42% (HR, 0.58; 95% CI, 0.42-0.80), the researchers report.

The reduction in ongoing stroke risk was on top of oral anticoagulation (OAC) and consistent across all subgroups, Richard Whitlock, MD, PhD, professor of surgery, McMaster University, Hamilton, Ont., reported in a late-breaking trial session at the annual scientific sessions of the American College of Cardiology.

The procedure was safe and added, on average, just 6 minutes to cardiopulmonary bypass time, according to the results, simultaneously published in the New England Journal of Medicine.

“Any patient who comes to the operating room who fits the profile of a LAAOS III patient – so has atrial fibrillation and an elevated stroke risk based on their CHA₂DS₂-VASc score – the appendage should come off,” he said in an interview.

Commenting during the formal discussion, panelist Michael J. Mack, MD, of Baylor Health Care System in Houston, said, “This is potentially a game-changing, practice-changing study” but asked if there are any patients who shouldn’t undergo LAAO, such as those with heart failure (HF).

Dr. Whitlock said about 10%-15% of patients coming for heart surgery have a history of AFib and “as surgeons, you do need to individualize therapy. If you have a very frail patient, have concerns about tissue quality, you really need to think about how you would occlude the left atrial appendage or if you would occlude.”

Reassuringly, he noted, the data show no increase in HF hospitalizations and a beneficial effect on stroke among patients with HF and those with low ejection fractions, below 50%.

Observational data on surgical occlusion have been inconsistent, and current guidelines offer a weak recommendation in patients with AFib who have a contraindication to long-term anticoagulation. This is the first study to definitively prove that ischemic stroke is reduced by managing the left atrial appendage, he said in an interview.

“The previous percutaneous trials failed to demonstrate that; they demonstrated noninferiority but it was driven primarily by the avoidance of hemorrhagic events or strokes through taking patients off oral anticoagulation,” he said.

The results should translate into a class I guideline recommendation, he added. “This opens up a new paradigm of treatment for atrial fibrillation and stroke prevention in that it is really the first study that has looked at the additive effects of managing the left atrial appendage in addition to oral anticoagulation, and it’s protective on top of oral anticoagulation. That is a paradigm shift.”

In an accompanying editorial, Richard L. Page, MD, University of Vermont in Burlington, said the trial provides no insight on the possible benefit of surgical occlusion in patients unable to receive anticoagulation or with a lower CHA2DS2-VASc score, but he agreed a class I recommendation is likely for the population studied.

“I hope and anticipate that the results of this paper will strengthen the guideline indications for surgical left atrial appendage occlusion and will increase the number of cardiac surgeons who routinely perform this add-on procedure,” he said. “While many already perform this procedure, cardiac surgeons should now feel more comfortable that surgical left atrial appendage occlusion is indicated and supported by high-quality randomized data.”

Unfortunately, LAAOS III does not answer the question of whether patients can come off anticoagulation, but it does show surgical occlusion provides added protection from strokes, which can be huge with atrial fibrillation, Dr. Whitlock said.

“I spoke with a patient today who is an active 66-year-old individual on a [direct oral anticoagulant], and his stroke risk has been further reduced by 30%-40%, so he was ecstatic to hear the results,” Dr. Whitlock said. “I think it’s peace of mind.”

Global, nonindustry effort

LAAOS III investigators at 105 centers in 27 countries enrolled 4,811 patients undergoing cardiac surgery (mean age, 71 years; 68% male) who had a CHA₂DS₂-VASc score of at least 2.

In all, 4,770 were randomly assigned to no LAAO or occlusion via the preferred technique of amputation with suture closure of the stump as well as stapler occlusion, or epicardial device closure with the AtriClip (AtriCure) or TigerPaw (Maquet Medical). The treating team, researchers, and patients were blinded to assignment.

Patients were followed every 6 months with a validated stroke questionnaire. The trial was stopped early by the data safety monitoring board after the second interim analysis.

The mean CHA₂DS₂-VASc score was 4.2, one-third of patients had permanent AFib, 9% had a history of stroke, and more than two-thirds underwent a valve procedure, which makes LAAOS III unique, as many previous trials excluded valvular AFib, Dr. Whitlock pointed out.

Operative outcomes in the LAAO and no-LAAO groups were as follows:

• Bypass time: mean, 119 minutes vs. 113 minutes.  
• Cross-clamp time: mean, 86 minutes vs. 82 minutes.
• Chest tube output: median, 520 mL vs. 500 mL.
• Reoperation for bleeding: both, 4.0%.
• Prolonged hospitalization due to HF: 5 vs. 14 events.
• 30-day mortality: 3.7% vs 4.0%.

The primary safety outcome of HF hospitalization at 3.8 years occurred in 7.7% of patients with LAAO and 6.8% without occlusion (HR, 1.13; 95% CI, 0.92-1.40), despite concerns that taking off the appendage could worsen HF risk by impairing renal clearance of salt and water.

“There’s observational data on either side of the fence, so it was an important endpoint that people were concerned about,” Dr. Whitlock told this news organization. “We had a data collection firm dedicated to admission for heart failure to really tease that out and, in the end, we saw no adverse effect.”

Although rates of ischemic stroke at 3.8 years were lower with LAAO than without (4.2% vs. 6.6%; HR, 0.62; 95% CI, 0.48-0.80), there was no difference in systemic embolism (0.3% for both) or death (22.6% vs. 22.5%).

In LAAOS III, fewer than 2% of the deaths were attributed to stroke, which is consistent with large stroke registries, Dr. Whitlock said. “Stroke is not what causes people with atrial fibrillation to die; it’s actually the progression on to heart failure.”

The positive effect on stroke was consistent across all subgroups, including sex, age, rheumatic heart disease, type of OAC at baseline, CHA₂DS₂-VASc score (≤4 vs. >4), type of surgery, history of heart failure or hypertension, and prior stroke/transient ischemic attack/systemic embolism.

Panelist Anne B. Curtis, MD, State University of New York at Buffalo, expressed surprise that about half of patients at baseline were not receiving anticoagulation and questioned whether event rates varied among those who did and didn’t stay on OAC.

Dr. Whitlock noted that OAC is often underused in AFib and that analyses showed the effects were consistent whether patients were on or off anticoagulants.

The study was sponsored by the Population Health Research Institute, McMaster University. Dr. Whitlock reported no relevant disclosures. Dr. Curtis reported consultant fees/honoraria from Abbott, Janssen, Medtronic, Milestone Pharmaceuticals, and Sanofi Aventis, and data safety monitoring board participation for Medtronic.
 

A version of this article first appeared on Medscape.com. 

Left atrial appendage occlusion performed at the time of other heart surgery reduces the risk for stroke by about one-third in high-risk patients with atrial fibrillation (AFib), according to results of the Left Atrial Appendage Occlusion Study III (LAAOS III).

At 3.8 years’ follow-up, the primary endpoint of ischemic stroke or systemic embolism occurred in 4.8% of patients randomly assigned to left atrial appendage occlusion (LAAO) and 7.0% of those with no occlusion. This translated into a 33% relative risk reduction (hazard ratio, 0.67; 95% confidence interval, 0.53-0.85; P = .001).

In a landmark analysis, the effect was present early on but was more pronounced after the first 30 days, reducing the relative risk by 42% (HR, 0.58; 95% CI, 0.42-0.80), the researchers report.

The reduction in ongoing stroke risk was on top of oral anticoagulation (OAC) and consistent across all subgroups, Richard Whitlock, MD, PhD, professor of surgery, McMaster University, Hamilton, Ont., reported in a late-breaking trial session at the annual scientific sessions of the American College of Cardiology.

The procedure was safe and added, on average, just 6 minutes to cardiopulmonary bypass time, according to the results, simultaneously published in the New England Journal of Medicine.

“Any patient who comes to the operating room who fits the profile of a LAAOS III patient – so has atrial fibrillation and an elevated stroke risk based on their CHA₂DS₂-VASc score – the appendage should come off,” he said in an interview.

Commenting during the formal discussion, panelist Michael J. Mack, MD, of Baylor Health Care System in Houston, said, “This is potentially a game-changing, practice-changing study” but asked if there are any patients who shouldn’t undergo LAAO, such as those with heart failure (HF).

Dr. Whitlock said about 10%-15% of patients coming for heart surgery have a history of AFib and “as surgeons, you do need to individualize therapy. If you have a very frail patient, have concerns about tissue quality, you really need to think about how you would occlude the left atrial appendage or if you would occlude.”

Reassuringly, he noted, the data show no increase in HF hospitalizations and a beneficial effect on stroke among patients with HF and those with low ejection fractions, below 50%.

Observational data on surgical occlusion have been inconsistent, and current guidelines offer a weak recommendation in patients with AFib who have a contraindication to long-term anticoagulation. This is the first study to definitively prove that ischemic stroke is reduced by managing the left atrial appendage, he said in an interview.

“The previous percutaneous trials failed to demonstrate that; they demonstrated noninferiority but it was driven primarily by the avoidance of hemorrhagic events or strokes through taking patients off oral anticoagulation,” he said.

The results should translate into a class I guideline recommendation, he added. “This opens up a new paradigm of treatment for atrial fibrillation and stroke prevention in that it is really the first study that has looked at the additive effects of managing the left atrial appendage in addition to oral anticoagulation, and it’s protective on top of oral anticoagulation. That is a paradigm shift.”

In an accompanying editorial, Richard L. Page, MD, University of Vermont in Burlington, said the trial provides no insight on the possible benefit of surgical occlusion in patients unable to receive anticoagulation or with a lower CHA2DS2-VASc score, but he agreed a class I recommendation is likely for the population studied.

“I hope and anticipate that the results of this paper will strengthen the guideline indications for surgical left atrial appendage occlusion and will increase the number of cardiac surgeons who routinely perform this add-on procedure,” he said. “While many already perform this procedure, cardiac surgeons should now feel more comfortable that surgical left atrial appendage occlusion is indicated and supported by high-quality randomized data.”

Unfortunately, LAAOS III does not answer the question of whether patients can come off anticoagulation, but it does show surgical occlusion provides added protection from strokes, which can be huge with atrial fibrillation, Dr. Whitlock said.

“I spoke with a patient today who is an active 66-year-old individual on a [direct oral anticoagulant], and his stroke risk has been further reduced by 30%-40%, so he was ecstatic to hear the results,” Dr. Whitlock said. “I think it’s peace of mind.”

Global, nonindustry effort

LAAOS III investigators at 105 centers in 27 countries enrolled 4,811 patients undergoing cardiac surgery (mean age, 71 years; 68% male) who had a CHA₂DS₂-VASc score of at least 2.

In all, 4,770 were randomly assigned to no LAAO or occlusion via the preferred technique of amputation with suture closure of the stump as well as stapler occlusion, or epicardial device closure with the AtriClip (AtriCure) or TigerPaw (Maquet Medical). The treating team, researchers, and patients were blinded to assignment.

Patients were followed every 6 months with a validated stroke questionnaire. The trial was stopped early by the data safety monitoring board after the second interim analysis.

The mean CHA₂DS₂-VASc score was 4.2, one-third of patients had permanent AFib, 9% had a history of stroke, and more than two-thirds underwent a valve procedure, which makes LAAOS III unique, as many previous trials excluded valvular AFib, Dr. Whitlock pointed out.

Operative outcomes in the LAAO and no-LAAO groups were as follows:

• Bypass time: mean, 119 minutes vs. 113 minutes.  
• Cross-clamp time: mean, 86 minutes vs. 82 minutes.
• Chest tube output: median, 520 mL vs. 500 mL.
• Reoperation for bleeding: both, 4.0%.
• Prolonged hospitalization due to HF: 5 vs. 14 events.
• 30-day mortality: 3.7% vs 4.0%.

The primary safety outcome of HF hospitalization at 3.8 years occurred in 7.7% of patients with LAAO and 6.8% without occlusion (HR, 1.13; 95% CI, 0.92-1.40), despite concerns that taking off the appendage could worsen HF risk by impairing renal clearance of salt and water.

“There’s observational data on either side of the fence, so it was an important endpoint that people were concerned about,” Dr. Whitlock told this news organization. “We had a data collection firm dedicated to admission for heart failure to really tease that out and, in the end, we saw no adverse effect.”

Although rates of ischemic stroke at 3.8 years were lower with LAAO than without (4.2% vs. 6.6%; HR, 0.62; 95% CI, 0.48-0.80), there was no difference in systemic embolism (0.3% for both) or death (22.6% vs. 22.5%).

In LAAOS III, fewer than 2% of the deaths were attributed to stroke, which is consistent with large stroke registries, Dr. Whitlock said. “Stroke is not what causes people with atrial fibrillation to die; it’s actually the progression on to heart failure.”

The positive effect on stroke was consistent across all subgroups, including sex, age, rheumatic heart disease, type of OAC at baseline, CHA₂DS₂-VASc score (≤4 vs. >4), type of surgery, history of heart failure or hypertension, and prior stroke/transient ischemic attack/systemic embolism.

Panelist Anne B. Curtis, MD, State University of New York at Buffalo, expressed surprise that about half of patients at baseline were not receiving anticoagulation and questioned whether event rates varied among those who did and didn’t stay on OAC.

Dr. Whitlock noted that OAC is often underused in AFib and that analyses showed the effects were consistent whether patients were on or off anticoagulants.

The study was sponsored by the Population Health Research Institute, McMaster University. Dr. Whitlock reported no relevant disclosures. Dr. Curtis reported consultant fees/honoraria from Abbott, Janssen, Medtronic, Milestone Pharmaceuticals, and Sanofi Aventis, and data safety monitoring board participation for Medtronic.
 

A version of this article first appeared on Medscape.com. 

Left atrial appendage occlusion performed at the time of other heart surgery reduces the risk for stroke by about one-third in high-risk patients with atrial fibrillation (AFib), according to results of the Left Atrial Appendage Occlusion Study III (LAAOS III).

At 3.8 years’ follow-up, the primary endpoint of ischemic stroke or systemic embolism occurred in 4.8% of patients randomly assigned to left atrial appendage occlusion (LAAO) and 7.0% of those with no occlusion. This translated into a 33% relative risk reduction (hazard ratio, 0.67; 95% confidence interval, 0.53-0.85; P = .001).

In a landmark analysis, the effect was present early on but was more pronounced after the first 30 days, reducing the relative risk by 42% (HR, 0.58; 95% CI, 0.42-0.80), the researchers report.

The reduction in ongoing stroke risk was on top of oral anticoagulation (OAC) and consistent across all subgroups, Richard Whitlock, MD, PhD, professor of surgery, McMaster University, Hamilton, Ont., reported in a late-breaking trial session at the annual scientific sessions of the American College of Cardiology.

The procedure was safe and added, on average, just 6 minutes to cardiopulmonary bypass time, according to the results, simultaneously published in the New England Journal of Medicine.

“Any patient who comes to the operating room who fits the profile of a LAAOS III patient – so has atrial fibrillation and an elevated stroke risk based on their CHA₂DS₂-VASc score – the appendage should come off,” he said in an interview.

Commenting during the formal discussion, panelist Michael J. Mack, MD, of Baylor Health Care System in Houston, said, “This is potentially a game-changing, practice-changing study” but asked if there are any patients who shouldn’t undergo LAAO, such as those with heart failure (HF).

Dr. Whitlock said about 10%-15% of patients coming for heart surgery have a history of AFib and “as surgeons, you do need to individualize therapy. If you have a very frail patient, have concerns about tissue quality, you really need to think about how you would occlude the left atrial appendage or if you would occlude.”

Reassuringly, he noted, the data show no increase in HF hospitalizations and a beneficial effect on stroke among patients with HF and those with low ejection fractions, below 50%.

Observational data on surgical occlusion have been inconsistent, and current guidelines offer a weak recommendation in patients with AFib who have a contraindication to long-term anticoagulation. This is the first study to definitively prove that ischemic stroke is reduced by managing the left atrial appendage, he said in an interview.

“The previous percutaneous trials failed to demonstrate that; they demonstrated noninferiority but it was driven primarily by the avoidance of hemorrhagic events or strokes through taking patients off oral anticoagulation,” he said.

The results should translate into a class I guideline recommendation, he added. “This opens up a new paradigm of treatment for atrial fibrillation and stroke prevention in that it is really the first study that has looked at the additive effects of managing the left atrial appendage in addition to oral anticoagulation, and it’s protective on top of oral anticoagulation. That is a paradigm shift.”

In an accompanying editorial, Richard L. Page, MD, University of Vermont in Burlington, said the trial provides no insight on the possible benefit of surgical occlusion in patients unable to receive anticoagulation or with a lower CHA2DS2-VASc score, but he agreed a class I recommendation is likely for the population studied.

“I hope and anticipate that the results of this paper will strengthen the guideline indications for surgical left atrial appendage occlusion and will increase the number of cardiac surgeons who routinely perform this add-on procedure,” he said. “While many already perform this procedure, cardiac surgeons should now feel more comfortable that surgical left atrial appendage occlusion is indicated and supported by high-quality randomized data.”

Unfortunately, LAAOS III does not answer the question of whether patients can come off anticoagulation, but it does show surgical occlusion provides added protection from strokes, which can be huge with atrial fibrillation, Dr. Whitlock said.

“I spoke with a patient today who is an active 66-year-old individual on a [direct oral anticoagulant], and his stroke risk has been further reduced by 30%-40%, so he was ecstatic to hear the results,” Dr. Whitlock said. “I think it’s peace of mind.”

Global, nonindustry effort

LAAOS III investigators at 105 centers in 27 countries enrolled 4,811 patients undergoing cardiac surgery (mean age, 71 years; 68% male) who had a CHA₂DS₂-VASc score of at least 2.

In all, 4,770 were randomly assigned to no LAAO or occlusion via the preferred technique of amputation with suture closure of the stump as well as stapler occlusion, or epicardial device closure with the AtriClip (AtriCure) or TigerPaw (Maquet Medical). The treating team, researchers, and patients were blinded to assignment.

Patients were followed every 6 months with a validated stroke questionnaire. The trial was stopped early by the data safety monitoring board after the second interim analysis.

The mean CHA₂DS₂-VASc score was 4.2, one-third of patients had permanent AFib, 9% had a history of stroke, and more than two-thirds underwent a valve procedure, which makes LAAOS III unique, as many previous trials excluded valvular AFib, Dr. Whitlock pointed out.

Operative outcomes in the LAAO and no-LAAO groups were as follows:

• Bypass time: mean, 119 minutes vs. 113 minutes.  
• Cross-clamp time: mean, 86 minutes vs. 82 minutes.
• Chest tube output: median, 520 mL vs. 500 mL.
• Reoperation for bleeding: both, 4.0%.
• Prolonged hospitalization due to HF: 5 vs. 14 events.
• 30-day mortality: 3.7% vs 4.0%.

The primary safety outcome of HF hospitalization at 3.8 years occurred in 7.7% of patients with LAAO and 6.8% without occlusion (HR, 1.13; 95% CI, 0.92-1.40), despite concerns that taking off the appendage could worsen HF risk by impairing renal clearance of salt and water.

“There’s observational data on either side of the fence, so it was an important endpoint that people were concerned about,” Dr. Whitlock told this news organization. “We had a data collection firm dedicated to admission for heart failure to really tease that out and, in the end, we saw no adverse effect.”

Although rates of ischemic stroke at 3.8 years were lower with LAAO than without (4.2% vs. 6.6%; HR, 0.62; 95% CI, 0.48-0.80), there was no difference in systemic embolism (0.3% for both) or death (22.6% vs. 22.5%).

In LAAOS III, fewer than 2% of the deaths were attributed to stroke, which is consistent with large stroke registries, Dr. Whitlock said. “Stroke is not what causes people with atrial fibrillation to die; it’s actually the progression on to heart failure.”

The positive effect on stroke was consistent across all subgroups, including sex, age, rheumatic heart disease, type of OAC at baseline, CHA₂DS₂-VASc score (≤4 vs. >4), type of surgery, history of heart failure or hypertension, and prior stroke/transient ischemic attack/systemic embolism.

Panelist Anne B. Curtis, MD, State University of New York at Buffalo, expressed surprise that about half of patients at baseline were not receiving anticoagulation and questioned whether event rates varied among those who did and didn’t stay on OAC.

Dr. Whitlock noted that OAC is often underused in AFib and that analyses showed the effects were consistent whether patients were on or off anticoagulants.

The study was sponsored by the Population Health Research Institute, McMaster University. Dr. Whitlock reported no relevant disclosures. Dr. Curtis reported consultant fees/honoraria from Abbott, Janssen, Medtronic, Milestone Pharmaceuticals, and Sanofi Aventis, and data safety monitoring board participation for Medtronic.
 

A version of this article first appeared on Medscape.com. 

No significant difference in cardiovascular events or major bleeding was shown between patients with established coronary heart disease assigned to a daily aspirin dose of 81 mg and those receiving a dose of 325 mg in the 15,000-patient ADAPTABLE trial.

Although substantial dose switching occurred in the trial, particularly from the higher to the lower dose, lead investigator W. Schuyler Jones, MD, believes the results support the use of the 81-mg dose in most patients.  

“While we would have liked to see higher adherence to the assigned doses, we think the results of the trial are reliable,” Dr. Jones said in an interview.

The real-world, open-label, pragmatic trial also involved an innovative low-cost design allowing researchers to identify and communicate with eligible patients directly, opening up a new cost-effective method to conduct clinical research going forward.

Dr. Jones, a cardiologist and associate professor of medicine at Duke University Medical Center, Durham, N.C., presented the ADAPTABLE results at the annual scientific sessions of the American College of Cardiology. They were simultaneously published online in the New England Journal of Medicine.   

He noted there were mixed signals in the results. “For example, the main intent-to-treat analysis showed a trend to a lower rate of all-cause death in the 81-mg group, but the subgroup of patients who stayed on the 325-mg dose throughout the study had a lower event rate. But overall, there was no difference.”

Dr. Jones said the investigators had the following take-home messages to patients: “If a patient is already taking 81 mg, staying on this dose is probably right given the similar study results for the primary endpoint and that we didn’t find conclusive evidence that 325 mg is better. But for patients who have tolerated 325 mg long term, then they may want to stay on this dose as it may be associated with moderate benefit.”

Dr. Jones pointed out that, overall, patients who switched doses tended to do worse, but he suggested this may have been more to do with underlying reasons for switching rather than the different dose itself. “For example, switching often happens after bleeding or bruising, which can also often preempt an ischemic event, and other illnesses, such as cancer or atrial fibrillation, can also lead patients to change doses.”

“With the caveat that this trial did not include new patients (the vast majority of patients had been taking aspirin previously) the results support the approach of starting new patients on 81 mg, which is what we have been seeing in evolving clinical practice in recent years,” he added.  

Dr. Jones explained that the trial set out to answer the simple but important question about the best dose of aspirin in patients with heart disease.

“Aspirin has been established as an appropriate long-term medication for patients with ischemic heart disease since the 1980s, but we really don’t have any good information on the correct dose.

He noted that the U.S. guidelines suggest any dose in the range of 81 mg to 325 mg daily can be used, whereas the European guidelines recommend 81 mg daily, although this is mainly based on observational data and expert opinion; there is little hard, randomized-trial evidence.

The ADAPTABLE trial randomly assigned 15,076 patients with established heart disease to receive 81 mg or 325 mg of aspirin. Before randomization, 96% of those with available information were already taking aspirin, 85% of whom were taking 81 mg.

After a mean follow-up of 26 months, the primary efficacy endpoint – a composite of all-cause death, myocardial infarction, or stroke – had occurred in 7.28% of the 81-mg group and 7.51% of the 325-mg group (hazard ratio, 1.02; 95% confidence interval, 0.91-1.14).     

The main safety endpoint, hospitalization for major bleeding with an associated blood transfusion, occurred in 0.63% of the 81-mg group and 0.60% of the 325-mg group (HR, 1.18; 95% CI, 0.79-1.77).

“The bleeding safety endpoint looked similar, which may be counterintuitive to what may have been expected,” Dr. Jones commented. “However, the safety endpoint was very stringent. We still haven’t analyzed all the less serious ADR [adverse drug event]/bleeding data, but overall, it does appear to be balanced.”

He added: “Most cardiologists probably may not have expected to see much difference in efficacy between these two doses but would maybe have anticipated a lower bleeding rate with the low dose. I was a little surprised to see such a low bleeding rate in the 325-mg group.”

Patients assigned to 325 mg had a higher incidence of dose switching (41.6%) than those assigned to 81 mg (7.1%) and were more likely to discontinue treatment (11.1% vs. 7.0%). This resulted in fewer median days of exposure to the assigned dose in the 325-mg group (434 vs. 650 days).

“This was an open-label study, and such studies always suffer from a degree of infidelity to the assigned treatment group,” Dr. Jones said. “In ADAPTABLE, this was unbalanced in that a much greater number of patients switched from 325 mg to 81 mg than the other way round.”   

“But our results do reflect what happens in normal life,” he added. “People behaved in the study like they do in the real world. They sometimes changed their dose and sometimes stopped taking aspirin altogether. So, I think the results are an accurate representation of the real world.”

A sensitivity analysis based on which dose the patient actually reported taking showed a higher risk for death, MI, or stroke in patients who took 81 mg than those who took 325 mg (HR, 1.25; 95% CI, 1.10-1.43). But as with any postrandomization analysis, this approach has many inherent biases, Dr. Jones cautioned.
 

Innovative study design  

The ADAPTABLE study used an innovative low-cost design, which involved direct communication with the patients themselves.

Using the National Patient-Centered Clinical Research Network (PCORnet), a group of 40 U.S. centers committed to compiling data in a common format, invitations to enroll in the study were sent to eligible patients identified from medical records. Consent and randomization took place on the patient web portal. 

Participants then purchased aspirin at the assigned dose themselves, and all follow-up was done virtually or on the phone, with outcomes ascertained remotely (from patient reports, electronic medical records, and insurance claims) without adjudication.   

“This is a pretty neat way to do clinical research, enabling us to conduct a 15,000-patient trial on a very tight budget,” Dr. Jones commented. 

He estimated that the trial cost around $18 to $19 million. “No industry funder would have sponsored such a study of aspirin, and a typical trial with this many patients conducted in the traditional way would have cost at least 5 or 10 times more,” he said.

“This is the first time this type of study has been done in the U.S. on such a large scale, and it opens up this method for future research.”

He explained that this design, communicating directly with patients, somewhat limits the questions that can be addressed. “As aspirin is purchased over the counter by patients themselves, this is a question that lent itself to be answered in this way.” 

Another innovative design feature was the inclusion of “patient partners,” with one patient nominated by each center to be part of the organization of the trial. “This helped keep the research relevant to what patients care about.

They also helped with the recruitment strategy and communication with participants. I think this is something we need to continue and prioritize in clinical research going forward,” Dr. Jones noted.

‘Pioneering’ trial

Discussants of the study at the ACC presentation congratulated the investigators on conducting such an innovative trial.

Donald Lloyd-Jones, MD, chair of preventive medicine at Northwestern University, Chicago, said, “This is really a pioneering large pragmatic trial, and we’re going to need to see more of these over the next few years. The most important legacy from this trial for me is that you did it, and that you showed us many of the promises and some of the pitfalls of these large pragmatic designs.”

Akshay Desai, MD, associate professor of medicine, Harvard Medical School, Boston, added: “This was an innovative approach to answering an important question for daily clinical practice.”

On the results of the study, Dr. Lloyd-Jones said, “Maybe the outcomes were not too surprising, and I certainly endorse your cautious status quo statement about patients staying on the dose that they are on.”

But he suggested that the bleeding safety outcomes were perhaps a little unexpected, being a little lower in the lower-dose group, and he asked whether there was a sensitivity analysis looking at bleeding on a per protocol basis. Dr. Jones answered that this was planned.

Dr. Desai also raised questions about the “unusual bleeding endpoint,” noting that the rates of bleeding were far lower than would be expected, compared with other clinical trials.

Dr. Jones replied that the bleeding endpoint with blood product transfusion was chosen to allow the researchers to accurately identify these events in claims codes. He said the endpoint probably mirrored the GUSTO (Global Use of Strategies to Open Occluded Coronary Arteries) severe bleeding classification.

In an editorial accompanying the publication of ADAPTABLE, Colin Baigent, FMedSci, says the study provides proof of principle that large pragmatic randomized trials can be conducted in the United States.

But Dr. Baigent, who is professor of epidemiology and director of the Medical Research Council Population Health Research Unit at the University of Oxford (England), says that the high degree of switching between dosages that occurred during the trial gives rise to some uncertainty about the results.  

“Because switching was not likely to have been at random, bias arising from this degree of crossover could have obscured a true difference in efficacy or safety (or both), and moreover it is also not possible to conclude that the lack of any significant difference between the two dose groups implies equivalence of the effects of the doses,” he writes.

He suggests that a pilot study may have identified a preference for the 81-mg dose and allowed methods to facilitate equipoise, such as a run-in period with both doses, and only patients adhering being considered for randomization.  

But Dr. Baigent concludes that the ADAPTABLE trial is a “major achievement” in that it paves the way for low-cost randomized trials in the United States, which should allow many more clinical questions to be answered.

The trial was supported by an award from the Patient-Centred Outcomes Research Institute.  Dr. Schuyler Jones reports consultant fees/honoraria from Bayer Healthcare and Janssen and research grants from Boehringer Ingelheim, Bristol Myers Squibb, and the Patient-Centered Outcomes Research Institute. Dr. Baigent reports grants from Boehringer Ingelheim, Medical Research Council, British Heart Foundation, and National Institute of Health Research, outside the submitted work.
 

A version of this article first appeared on Medscape.com.

No significant difference in cardiovascular events or major bleeding was shown between patients with established coronary heart disease assigned to a daily aspirin dose of 81 mg and those receiving a dose of 325 mg in the 15,000-patient ADAPTABLE trial.

Although substantial dose switching occurred in the trial, particularly from the higher to the lower dose, lead investigator W. Schuyler Jones, MD, believes the results support the use of the 81-mg dose in most patients.  

“While we would have liked to see higher adherence to the assigned doses, we think the results of the trial are reliable,” Dr. Jones said in an interview.

The real-world, open-label, pragmatic trial also involved an innovative low-cost design allowing researchers to identify and communicate with eligible patients directly, opening up a new cost-effective method to conduct clinical research going forward.

Dr. Jones, a cardiologist and associate professor of medicine at Duke University Medical Center, Durham, N.C., presented the ADAPTABLE results at the annual scientific sessions of the American College of Cardiology. They were simultaneously published online in the New England Journal of Medicine.   

He noted there were mixed signals in the results. “For example, the main intent-to-treat analysis showed a trend to a lower rate of all-cause death in the 81-mg group, but the subgroup of patients who stayed on the 325-mg dose throughout the study had a lower event rate. But overall, there was no difference.”

Dr. Jones said the investigators had the following take-home messages to patients: “If a patient is already taking 81 mg, staying on this dose is probably right given the similar study results for the primary endpoint and that we didn’t find conclusive evidence that 325 mg is better. But for patients who have tolerated 325 mg long term, then they may want to stay on this dose as it may be associated with moderate benefit.”

Dr. Jones pointed out that, overall, patients who switched doses tended to do worse, but he suggested this may have been more to do with underlying reasons for switching rather than the different dose itself. “For example, switching often happens after bleeding or bruising, which can also often preempt an ischemic event, and other illnesses, such as cancer or atrial fibrillation, can also lead patients to change doses.”

“With the caveat that this trial did not include new patients (the vast majority of patients had been taking aspirin previously) the results support the approach of starting new patients on 81 mg, which is what we have been seeing in evolving clinical practice in recent years,” he added.  

Dr. Jones explained that the trial set out to answer the simple but important question about the best dose of aspirin in patients with heart disease.

“Aspirin has been established as an appropriate long-term medication for patients with ischemic heart disease since the 1980s, but we really don’t have any good information on the correct dose.

He noted that the U.S. guidelines suggest any dose in the range of 81 mg to 325 mg daily can be used, whereas the European guidelines recommend 81 mg daily, although this is mainly based on observational data and expert opinion; there is little hard, randomized-trial evidence.

The ADAPTABLE trial randomly assigned 15,076 patients with established heart disease to receive 81 mg or 325 mg of aspirin. Before randomization, 96% of those with available information were already taking aspirin, 85% of whom were taking 81 mg.

After a mean follow-up of 26 months, the primary efficacy endpoint – a composite of all-cause death, myocardial infarction, or stroke – had occurred in 7.28% of the 81-mg group and 7.51% of the 325-mg group (hazard ratio, 1.02; 95% confidence interval, 0.91-1.14).     

The main safety endpoint, hospitalization for major bleeding with an associated blood transfusion, occurred in 0.63% of the 81-mg group and 0.60% of the 325-mg group (HR, 1.18; 95% CI, 0.79-1.77).

“The bleeding safety endpoint looked similar, which may be counterintuitive to what may have been expected,” Dr. Jones commented. “However, the safety endpoint was very stringent. We still haven’t analyzed all the less serious ADR [adverse drug event]/bleeding data, but overall, it does appear to be balanced.”

He added: “Most cardiologists probably may not have expected to see much difference in efficacy between these two doses but would maybe have anticipated a lower bleeding rate with the low dose. I was a little surprised to see such a low bleeding rate in the 325-mg group.”

Patients assigned to 325 mg had a higher incidence of dose switching (41.6%) than those assigned to 81 mg (7.1%) and were more likely to discontinue treatment (11.1% vs. 7.0%). This resulted in fewer median days of exposure to the assigned dose in the 325-mg group (434 vs. 650 days).

“This was an open-label study, and such studies always suffer from a degree of infidelity to the assigned treatment group,” Dr. Jones said. “In ADAPTABLE, this was unbalanced in that a much greater number of patients switched from 325 mg to 81 mg than the other way round.”   

“But our results do reflect what happens in normal life,” he added. “People behaved in the study like they do in the real world. They sometimes changed their dose and sometimes stopped taking aspirin altogether. So, I think the results are an accurate representation of the real world.”

A sensitivity analysis based on which dose the patient actually reported taking showed a higher risk for death, MI, or stroke in patients who took 81 mg than those who took 325 mg (HR, 1.25; 95% CI, 1.10-1.43). But as with any postrandomization analysis, this approach has many inherent biases, Dr. Jones cautioned.
 

Innovative study design  

The ADAPTABLE study used an innovative low-cost design, which involved direct communication with the patients themselves.

Using the National Patient-Centered Clinical Research Network (PCORnet), a group of 40 U.S. centers committed to compiling data in a common format, invitations to enroll in the study were sent to eligible patients identified from medical records. Consent and randomization took place on the patient web portal. 

Participants then purchased aspirin at the assigned dose themselves, and all follow-up was done virtually or on the phone, with outcomes ascertained remotely (from patient reports, electronic medical records, and insurance claims) without adjudication.   

“This is a pretty neat way to do clinical research, enabling us to conduct a 15,000-patient trial on a very tight budget,” Dr. Jones commented. 

He estimated that the trial cost around $18 to $19 million. “No industry funder would have sponsored such a study of aspirin, and a typical trial with this many patients conducted in the traditional way would have cost at least 5 or 10 times more,” he said.

“This is the first time this type of study has been done in the U.S. on such a large scale, and it opens up this method for future research.”

He explained that this design, communicating directly with patients, somewhat limits the questions that can be addressed. “As aspirin is purchased over the counter by patients themselves, this is a question that lent itself to be answered in this way.” 

Another innovative design feature was the inclusion of “patient partners,” with one patient nominated by each center to be part of the organization of the trial. “This helped keep the research relevant to what patients care about.

They also helped with the recruitment strategy and communication with participants. I think this is something we need to continue and prioritize in clinical research going forward,” Dr. Jones noted.

‘Pioneering’ trial

Discussants of the study at the ACC presentation congratulated the investigators on conducting such an innovative trial.

Donald Lloyd-Jones, MD, chair of preventive medicine at Northwestern University, Chicago, said, “This is really a pioneering large pragmatic trial, and we’re going to need to see more of these over the next few years. The most important legacy from this trial for me is that you did it, and that you showed us many of the promises and some of the pitfalls of these large pragmatic designs.”

Akshay Desai, MD, associate professor of medicine, Harvard Medical School, Boston, added: “This was an innovative approach to answering an important question for daily clinical practice.”

On the results of the study, Dr. Lloyd-Jones said, “Maybe the outcomes were not too surprising, and I certainly endorse your cautious status quo statement about patients staying on the dose that they are on.”

But he suggested that the bleeding safety outcomes were perhaps a little unexpected, being a little lower in the lower-dose group, and he asked whether there was a sensitivity analysis looking at bleeding on a per protocol basis. Dr. Jones answered that this was planned.

Dr. Desai also raised questions about the “unusual bleeding endpoint,” noting that the rates of bleeding were far lower than would be expected, compared with other clinical trials.

Dr. Jones replied that the bleeding endpoint with blood product transfusion was chosen to allow the researchers to accurately identify these events in claims codes. He said the endpoint probably mirrored the GUSTO (Global Use of Strategies to Open Occluded Coronary Arteries) severe bleeding classification.

In an editorial accompanying the publication of ADAPTABLE, Colin Baigent, FMedSci, says the study provides proof of principle that large pragmatic randomized trials can be conducted in the United States.

But Dr. Baigent, who is professor of epidemiology and director of the Medical Research Council Population Health Research Unit at the University of Oxford (England), says that the high degree of switching between dosages that occurred during the trial gives rise to some uncertainty about the results.  

“Because switching was not likely to have been at random, bias arising from this degree of crossover could have obscured a true difference in efficacy or safety (or both), and moreover it is also not possible to conclude that the lack of any significant difference between the two dose groups implies equivalence of the effects of the doses,” he writes.

He suggests that a pilot study may have identified a preference for the 81-mg dose and allowed methods to facilitate equipoise, such as a run-in period with both doses, and only patients adhering being considered for randomization.  

But Dr. Baigent concludes that the ADAPTABLE trial is a “major achievement” in that it paves the way for low-cost randomized trials in the United States, which should allow many more clinical questions to be answered.

The trial was supported by an award from the Patient-Centred Outcomes Research Institute.  Dr. Schuyler Jones reports consultant fees/honoraria from Bayer Healthcare and Janssen and research grants from Boehringer Ingelheim, Bristol Myers Squibb, and the Patient-Centered Outcomes Research Institute. Dr. Baigent reports grants from Boehringer Ingelheim, Medical Research Council, British Heart Foundation, and National Institute of Health Research, outside the submitted work.
 

A version of this article first appeared on Medscape.com.

No significant difference in cardiovascular events or major bleeding was shown between patients with established coronary heart disease assigned to a daily aspirin dose of 81 mg and those receiving a dose of 325 mg in the 15,000-patient ADAPTABLE trial.

Although substantial dose switching occurred in the trial, particularly from the higher to the lower dose, lead investigator W. Schuyler Jones, MD, believes the results support the use of the 81-mg dose in most patients.  

“While we would have liked to see higher adherence to the assigned doses, we think the results of the trial are reliable,” Dr. Jones said in an interview.

The real-world, open-label, pragmatic trial also involved an innovative low-cost design allowing researchers to identify and communicate with eligible patients directly, opening up a new cost-effective method to conduct clinical research going forward.

Dr. Jones, a cardiologist and associate professor of medicine at Duke University Medical Center, Durham, N.C., presented the ADAPTABLE results at the annual scientific sessions of the American College of Cardiology. They were simultaneously published online in the New England Journal of Medicine.   

He noted there were mixed signals in the results. “For example, the main intent-to-treat analysis showed a trend to a lower rate of all-cause death in the 81-mg group, but the subgroup of patients who stayed on the 325-mg dose throughout the study had a lower event rate. But overall, there was no difference.”

Dr. Jones said the investigators had the following take-home messages to patients: “If a patient is already taking 81 mg, staying on this dose is probably right given the similar study results for the primary endpoint and that we didn’t find conclusive evidence that 325 mg is better. But for patients who have tolerated 325 mg long term, then they may want to stay on this dose as it may be associated with moderate benefit.”

Dr. Jones pointed out that, overall, patients who switched doses tended to do worse, but he suggested this may have been more to do with underlying reasons for switching rather than the different dose itself. “For example, switching often happens after bleeding or bruising, which can also often preempt an ischemic event, and other illnesses, such as cancer or atrial fibrillation, can also lead patients to change doses.”

“With the caveat that this trial did not include new patients (the vast majority of patients had been taking aspirin previously) the results support the approach of starting new patients on 81 mg, which is what we have been seeing in evolving clinical practice in recent years,” he added.  

Dr. Jones explained that the trial set out to answer the simple but important question about the best dose of aspirin in patients with heart disease.

“Aspirin has been established as an appropriate long-term medication for patients with ischemic heart disease since the 1980s, but we really don’t have any good information on the correct dose.

He noted that the U.S. guidelines suggest any dose in the range of 81 mg to 325 mg daily can be used, whereas the European guidelines recommend 81 mg daily, although this is mainly based on observational data and expert opinion; there is little hard, randomized-trial evidence.

The ADAPTABLE trial randomly assigned 15,076 patients with established heart disease to receive 81 mg or 325 mg of aspirin. Before randomization, 96% of those with available information were already taking aspirin, 85% of whom were taking 81 mg.

After a mean follow-up of 26 months, the primary efficacy endpoint – a composite of all-cause death, myocardial infarction, or stroke – had occurred in 7.28% of the 81-mg group and 7.51% of the 325-mg group (hazard ratio, 1.02; 95% confidence interval, 0.91-1.14).     

The main safety endpoint, hospitalization for major bleeding with an associated blood transfusion, occurred in 0.63% of the 81-mg group and 0.60% of the 325-mg group (HR, 1.18; 95% CI, 0.79-1.77).

“The bleeding safety endpoint looked similar, which may be counterintuitive to what may have been expected,” Dr. Jones commented. “However, the safety endpoint was very stringent. We still haven’t analyzed all the less serious ADR [adverse drug event]/bleeding data, but overall, it does appear to be balanced.”

He added: “Most cardiologists probably may not have expected to see much difference in efficacy between these two doses but would maybe have anticipated a lower bleeding rate with the low dose. I was a little surprised to see such a low bleeding rate in the 325-mg group.”

Patients assigned to 325 mg had a higher incidence of dose switching (41.6%) than those assigned to 81 mg (7.1%) and were more likely to discontinue treatment (11.1% vs. 7.0%). This resulted in fewer median days of exposure to the assigned dose in the 325-mg group (434 vs. 650 days).

“This was an open-label study, and such studies always suffer from a degree of infidelity to the assigned treatment group,” Dr. Jones said. “In ADAPTABLE, this was unbalanced in that a much greater number of patients switched from 325 mg to 81 mg than the other way round.”   

“But our results do reflect what happens in normal life,” he added. “People behaved in the study like they do in the real world. They sometimes changed their dose and sometimes stopped taking aspirin altogether. So, I think the results are an accurate representation of the real world.”

A sensitivity analysis based on which dose the patient actually reported taking showed a higher risk for death, MI, or stroke in patients who took 81 mg than those who took 325 mg (HR, 1.25; 95% CI, 1.10-1.43). But as with any postrandomization analysis, this approach has many inherent biases, Dr. Jones cautioned.
 

Innovative study design  

The ADAPTABLE study used an innovative low-cost design, which involved direct communication with the patients themselves.

Using the National Patient-Centered Clinical Research Network (PCORnet), a group of 40 U.S. centers committed to compiling data in a common format, invitations to enroll in the study were sent to eligible patients identified from medical records. Consent and randomization took place on the patient web portal. 

Participants then purchased aspirin at the assigned dose themselves, and all follow-up was done virtually or on the phone, with outcomes ascertained remotely (from patient reports, electronic medical records, and insurance claims) without adjudication.   

“This is a pretty neat way to do clinical research, enabling us to conduct a 15,000-patient trial on a very tight budget,” Dr. Jones commented. 

He estimated that the trial cost around $18 to $19 million. “No industry funder would have sponsored such a study of aspirin, and a typical trial with this many patients conducted in the traditional way would have cost at least 5 or 10 times more,” he said.

“This is the first time this type of study has been done in the U.S. on such a large scale, and it opens up this method for future research.”

He explained that this design, communicating directly with patients, somewhat limits the questions that can be addressed. “As aspirin is purchased over the counter by patients themselves, this is a question that lent itself to be answered in this way.” 

Another innovative design feature was the inclusion of “patient partners,” with one patient nominated by each center to be part of the organization of the trial. “This helped keep the research relevant to what patients care about.

They also helped with the recruitment strategy and communication with participants. I think this is something we need to continue and prioritize in clinical research going forward,” Dr. Jones noted.

‘Pioneering’ trial

Discussants of the study at the ACC presentation congratulated the investigators on conducting such an innovative trial.

Donald Lloyd-Jones, MD, chair of preventive medicine at Northwestern University, Chicago, said, “This is really a pioneering large pragmatic trial, and we’re going to need to see more of these over the next few years. The most important legacy from this trial for me is that you did it, and that you showed us many of the promises and some of the pitfalls of these large pragmatic designs.”

Akshay Desai, MD, associate professor of medicine, Harvard Medical School, Boston, added: “This was an innovative approach to answering an important question for daily clinical practice.”

On the results of the study, Dr. Lloyd-Jones said, “Maybe the outcomes were not too surprising, and I certainly endorse your cautious status quo statement about patients staying on the dose that they are on.”

But he suggested that the bleeding safety outcomes were perhaps a little unexpected, being a little lower in the lower-dose group, and he asked whether there was a sensitivity analysis looking at bleeding on a per protocol basis. Dr. Jones answered that this was planned.

Dr. Desai also raised questions about the “unusual bleeding endpoint,” noting that the rates of bleeding were far lower than would be expected, compared with other clinical trials.

Dr. Jones replied that the bleeding endpoint with blood product transfusion was chosen to allow the researchers to accurately identify these events in claims codes. He said the endpoint probably mirrored the GUSTO (Global Use of Strategies to Open Occluded Coronary Arteries) severe bleeding classification.

In an editorial accompanying the publication of ADAPTABLE, Colin Baigent, FMedSci, says the study provides proof of principle that large pragmatic randomized trials can be conducted in the United States.

But Dr. Baigent, who is professor of epidemiology and director of the Medical Research Council Population Health Research Unit at the University of Oxford (England), says that the high degree of switching between dosages that occurred during the trial gives rise to some uncertainty about the results.  

“Because switching was not likely to have been at random, bias arising from this degree of crossover could have obscured a true difference in efficacy or safety (or both), and moreover it is also not possible to conclude that the lack of any significant difference between the two dose groups implies equivalence of the effects of the doses,” he writes.

He suggests that a pilot study may have identified a preference for the 81-mg dose and allowed methods to facilitate equipoise, such as a run-in period with both doses, and only patients adhering being considered for randomization.  

But Dr. Baigent concludes that the ADAPTABLE trial is a “major achievement” in that it paves the way for low-cost randomized trials in the United States, which should allow many more clinical questions to be answered.

The trial was supported by an award from the Patient-Centred Outcomes Research Institute.  Dr. Schuyler Jones reports consultant fees/honoraria from Bayer Healthcare and Janssen and research grants from Boehringer Ingelheim, Bristol Myers Squibb, and the Patient-Centered Outcomes Research Institute. Dr. Baigent reports grants from Boehringer Ingelheim, Medical Research Council, British Heart Foundation, and National Institute of Health Research, outside the submitted work.
 

A version of this article first appeared on Medscape.com.

Treatment with sacubitril/valsartan, a pillar of therapy for patients with chronic heart failure with below-normal ejection fraction, came suggestively close to showing efficacy for preventing cardiovascular death or heart failure events in patients who have just had an MI but have no history of heart failure in a controlled trial with more than 5,600 patients.

Although sacubitril/valsartan (Entresto) fell short of producing a significant benefit, it did show good safety that was similar to the study’s comparator treatment, ramipril, an agent from the angiotensin-converting enzyme inhibitor class that is a mainstay of treatment in these patients.

“To say that, with no run-in, sacubitril/valsartan is as well tolerated and as safe as one of the best-studied ACE inhibitors – ramipril – in acutely ill MI patients, is a big statement,” said Marc A. Pfeffer, MD, at the annual scientific sessions of the American College of Cardiology. This high level of safety without gradual uptitration of sacubitril/valsartan (Entresto) “should lower barriers” to broader use of the dual-drug formulation for its approved indication in patients with chronic heart failure, especially patients with a left ventricular ejection fraction that is below normal. In addition, results from the PARADISE-MI trial suggested that “patients seemed to benefit before they develop heart failure. We couldn’t prove that, but we should build on this, and make it easier for patients to use this treatment,” Dr. Pfeffer said during a press briefing following his talk at the sessions.

Preventing heart failures to come

Treatment with sacubitril/valsartan in acute MI patients within a few days of their event “is perhaps addressing prevention of the heart failure that’s to come,” commented Lynne W. Stevenson, MD, designated discussant for the report and professor of medicine at Vanderbilt University Medical Center in Nashville. “Patients who are destined to develop heart failure are beginning their treatment early. The subgroup analyses suggest that it’s the sicker patients who benefited the most,” she said.

But Dr. Pfeffer stressed that “I don’t think this is a subgroup discussion. I would like to pursue this, but that’s up to the sponsor,” Novartis, the company that markets sacubitril/valsartan.

‘Exceedingly reassuring’ safety

The safety data that Dr. Pfeffer reported “are exceedingly reassuring. We didn’t see a signal of harm, and in some of the exploratory endpoints there was some evidence of benefit, so we need to encourage you to continue,” commented Mary N. Walsh, MD, medical director of the heart failure and cardiac transplantation program at Ascension St. Vincent Heart Center of Indiana in Indianapolis.

The PARADISE-MI (Prospective ARNI vs. ACE Inhibitor Trial to Determine Superiority in Reducing Heart Failure Events After MI) trial enrolled 5,669 patients with no history of heart failure within an average of 4 days following an acute MI at 495 sites in 41 countries during 2016-2020, with 8% of enrolled patients from the United States. Patients averaged 64 years of age, about three-quarters were men, about 43% had a history of diabetes, and only 1% were Black; Dr. Pfeffer noted that this is because most patients came from countries with low Black populations. The enrollment criteria required a left ventricular ejection fraction no greater than 40%, and among the enrolled patients this averaged about 37%.

A 10% nonsignificant relative risk reduction for the primary endpoint

The study’s primary endpoint was the combined first-event rate of cardiovascular death, hospitalization for heart failure, or an outpatient visit for heart failure. During a median follow-up of 23 months, this occurred at a rate of 7.4/100 patient years in the ramipril arm and 6.7/100 patient years in the sacubitril/valsartan arm, a 10% relative risk reduction with sacubitril/valsartan that was not significant, which meant all other efficacy analyses were exploratory, Dr. Pfeffer stressed.

Several secondary efficacy analyses showed significant benefits from sacubitril/valsartan, compared with ramipril, including the total number of events that comprised the primary endpoint, with a 21% relative risk reduction associated with sacubitril/valsartan, as well as investigator-reported events. The primary-endpoint benefit from sacubitril/valsartan was also significant in two subgroup analyses: patients aged 65 years or older (roughly half the study cohort), who had a 24% relative risk reduction on sacubitril/valsartan, compared with ramipril, and the 88% of patients who received treatment with percutaneous coronary intervention for their acute MI, who had a 19% relative risk reduction on sacubitril/valsartan, compared with patients who received ramipril.

The study’s safety data showed nearly identical rates in the two treatment arms for total adverse events, serious adverse events, adverse events that led to stopping the study drug, as well as in laboratory measures. The biggest between-treatment differences were a modest excess of hypotension on sacubitril valsartan, 28%, compared with 22% on ramipril, and a modest excess rate of cough on ramipril, 13%, compared with 9% on sacubitril/valsartan.

The added insight the results provide about sacubitril/valsartan comes at a time when U.S. patients continue to struggle to get health insurance coverage for an agent that has been approved for U.S. use in treating heart failure since 2015.

“Our patients do not have access to this important treatment,” declared Dr. Walsh during the press briefing. “The prior authorization process is unbelievable, and some patients have no access unless they pay the full cost on their own. This is an important, real-world problem that we face with this drug.”

PARADISE-MI was sponsored by Novartis, the company that markets sacubitril/valsartan (Entresto). Dr. Pfeffer has received research funding from and is a consultant to Novartis. He is also a consultant to AstraZeneca, Boehringer Ingelheim, Corvidia, DalCor, Eli Lilly, GlaxoSmithKline, Novo Nordisk, Peerbridge, and Sanofi, and he holds equity in DalCor and Peerbridge. Dr. Stevenson has received honoraria from LivaNova and has received research support from Abbott. Dr. Walsh had no disclosures.

mzoler@mdedge.com

Treatment with sacubitril/valsartan, a pillar of therapy for patients with chronic heart failure with below-normal ejection fraction, came suggestively close to showing efficacy for preventing cardiovascular death or heart failure events in patients who have just had an MI but have no history of heart failure in a controlled trial with more than 5,600 patients.

Although sacubitril/valsartan (Entresto) fell short of producing a significant benefit, it did show good safety that was similar to the study’s comparator treatment, ramipril, an agent from the angiotensin-converting enzyme inhibitor class that is a mainstay of treatment in these patients.

“To say that, with no run-in, sacubitril/valsartan is as well tolerated and as safe as one of the best-studied ACE inhibitors – ramipril – in acutely ill MI patients, is a big statement,” said Marc A. Pfeffer, MD, at the annual scientific sessions of the American College of Cardiology. This high level of safety without gradual uptitration of sacubitril/valsartan (Entresto) “should lower barriers” to broader use of the dual-drug formulation for its approved indication in patients with chronic heart failure, especially patients with a left ventricular ejection fraction that is below normal. In addition, results from the PARADISE-MI trial suggested that “patients seemed to benefit before they develop heart failure. We couldn’t prove that, but we should build on this, and make it easier for patients to use this treatment,” Dr. Pfeffer said during a press briefing following his talk at the sessions.

Preventing heart failures to come

Treatment with sacubitril/valsartan in acute MI patients within a few days of their event “is perhaps addressing prevention of the heart failure that’s to come,” commented Lynne W. Stevenson, MD, designated discussant for the report and professor of medicine at Vanderbilt University Medical Center in Nashville. “Patients who are destined to develop heart failure are beginning their treatment early. The subgroup analyses suggest that it’s the sicker patients who benefited the most,” she said.

But Dr. Pfeffer stressed that “I don’t think this is a subgroup discussion. I would like to pursue this, but that’s up to the sponsor,” Novartis, the company that markets sacubitril/valsartan.

‘Exceedingly reassuring’ safety

The safety data that Dr. Pfeffer reported “are exceedingly reassuring. We didn’t see a signal of harm, and in some of the exploratory endpoints there was some evidence of benefit, so we need to encourage you to continue,” commented Mary N. Walsh, MD, medical director of the heart failure and cardiac transplantation program at Ascension St. Vincent Heart Center of Indiana in Indianapolis.

The PARADISE-MI (Prospective ARNI vs. ACE Inhibitor Trial to Determine Superiority in Reducing Heart Failure Events After MI) trial enrolled 5,669 patients with no history of heart failure within an average of 4 days following an acute MI at 495 sites in 41 countries during 2016-2020, with 8% of enrolled patients from the United States. Patients averaged 64 years of age, about three-quarters were men, about 43% had a history of diabetes, and only 1% were Black; Dr. Pfeffer noted that this is because most patients came from countries with low Black populations. The enrollment criteria required a left ventricular ejection fraction no greater than 40%, and among the enrolled patients this averaged about 37%.

A 10% nonsignificant relative risk reduction for the primary endpoint

The study’s primary endpoint was the combined first-event rate of cardiovascular death, hospitalization for heart failure, or an outpatient visit for heart failure. During a median follow-up of 23 months, this occurred at a rate of 7.4/100 patient years in the ramipril arm and 6.7/100 patient years in the sacubitril/valsartan arm, a 10% relative risk reduction with sacubitril/valsartan that was not significant, which meant all other efficacy analyses were exploratory, Dr. Pfeffer stressed.

Several secondary efficacy analyses showed significant benefits from sacubitril/valsartan, compared with ramipril, including the total number of events that comprised the primary endpoint, with a 21% relative risk reduction associated with sacubitril/valsartan, as well as investigator-reported events. The primary-endpoint benefit from sacubitril/valsartan was also significant in two subgroup analyses: patients aged 65 years or older (roughly half the study cohort), who had a 24% relative risk reduction on sacubitril/valsartan, compared with ramipril, and the 88% of patients who received treatment with percutaneous coronary intervention for their acute MI, who had a 19% relative risk reduction on sacubitril/valsartan, compared with patients who received ramipril.

The study’s safety data showed nearly identical rates in the two treatment arms for total adverse events, serious adverse events, adverse events that led to stopping the study drug, as well as in laboratory measures. The biggest between-treatment differences were a modest excess of hypotension on sacubitril valsartan, 28%, compared with 22% on ramipril, and a modest excess rate of cough on ramipril, 13%, compared with 9% on sacubitril/valsartan.

The added insight the results provide about sacubitril/valsartan comes at a time when U.S. patients continue to struggle to get health insurance coverage for an agent that has been approved for U.S. use in treating heart failure since 2015.

“Our patients do not have access to this important treatment,” declared Dr. Walsh during the press briefing. “The prior authorization process is unbelievable, and some patients have no access unless they pay the full cost on their own. This is an important, real-world problem that we face with this drug.”

PARADISE-MI was sponsored by Novartis, the company that markets sacubitril/valsartan (Entresto). Dr. Pfeffer has received research funding from and is a consultant to Novartis. He is also a consultant to AstraZeneca, Boehringer Ingelheim, Corvidia, DalCor, Eli Lilly, GlaxoSmithKline, Novo Nordisk, Peerbridge, and Sanofi, and he holds equity in DalCor and Peerbridge. Dr. Stevenson has received honoraria from LivaNova and has received research support from Abbott. Dr. Walsh had no disclosures.

mzoler@mdedge.com

Treatment with sacubitril/valsartan, a pillar of therapy for patients with chronic heart failure with below-normal ejection fraction, came suggestively close to showing efficacy for preventing cardiovascular death or heart failure events in patients who have just had an MI but have no history of heart failure in a controlled trial with more than 5,600 patients.

Although sacubitril/valsartan (Entresto) fell short of producing a significant benefit, it did show good safety that was similar to the study’s comparator treatment, ramipril, an agent from the angiotensin-converting enzyme inhibitor class that is a mainstay of treatment in these patients.

“To say that, with no run-in, sacubitril/valsartan is as well tolerated and as safe as one of the best-studied ACE inhibitors – ramipril – in acutely ill MI patients, is a big statement,” said Marc A. Pfeffer, MD, at the annual scientific sessions of the American College of Cardiology. This high level of safety without gradual uptitration of sacubitril/valsartan (Entresto) “should lower barriers” to broader use of the dual-drug formulation for its approved indication in patients with chronic heart failure, especially patients with a left ventricular ejection fraction that is below normal. In addition, results from the PARADISE-MI trial suggested that “patients seemed to benefit before they develop heart failure. We couldn’t prove that, but we should build on this, and make it easier for patients to use this treatment,” Dr. Pfeffer said during a press briefing following his talk at the sessions.

Preventing heart failures to come

Treatment with sacubitril/valsartan in acute MI patients within a few days of their event “is perhaps addressing prevention of the heart failure that’s to come,” commented Lynne W. Stevenson, MD, designated discussant for the report and professor of medicine at Vanderbilt University Medical Center in Nashville. “Patients who are destined to develop heart failure are beginning their treatment early. The subgroup analyses suggest that it’s the sicker patients who benefited the most,” she said.

But Dr. Pfeffer stressed that “I don’t think this is a subgroup discussion. I would like to pursue this, but that’s up to the sponsor,” Novartis, the company that markets sacubitril/valsartan.

‘Exceedingly reassuring’ safety

The safety data that Dr. Pfeffer reported “are exceedingly reassuring. We didn’t see a signal of harm, and in some of the exploratory endpoints there was some evidence of benefit, so we need to encourage you to continue,” commented Mary N. Walsh, MD, medical director of the heart failure and cardiac transplantation program at Ascension St. Vincent Heart Center of Indiana in Indianapolis.

The PARADISE-MI (Prospective ARNI vs. ACE Inhibitor Trial to Determine Superiority in Reducing Heart Failure Events After MI) trial enrolled 5,669 patients with no history of heart failure within an average of 4 days following an acute MI at 495 sites in 41 countries during 2016-2020, with 8% of enrolled patients from the United States. Patients averaged 64 years of age, about three-quarters were men, about 43% had a history of diabetes, and only 1% were Black; Dr. Pfeffer noted that this is because most patients came from countries with low Black populations. The enrollment criteria required a left ventricular ejection fraction no greater than 40%, and among the enrolled patients this averaged about 37%.

A 10% nonsignificant relative risk reduction for the primary endpoint

The study’s primary endpoint was the combined first-event rate of cardiovascular death, hospitalization for heart failure, or an outpatient visit for heart failure. During a median follow-up of 23 months, this occurred at a rate of 7.4/100 patient years in the ramipril arm and 6.7/100 patient years in the sacubitril/valsartan arm, a 10% relative risk reduction with sacubitril/valsartan that was not significant, which meant all other efficacy analyses were exploratory, Dr. Pfeffer stressed.

Several secondary efficacy analyses showed significant benefits from sacubitril/valsartan, compared with ramipril, including the total number of events that comprised the primary endpoint, with a 21% relative risk reduction associated with sacubitril/valsartan, as well as investigator-reported events. The primary-endpoint benefit from sacubitril/valsartan was also significant in two subgroup analyses: patients aged 65 years or older (roughly half the study cohort), who had a 24% relative risk reduction on sacubitril/valsartan, compared with ramipril, and the 88% of patients who received treatment with percutaneous coronary intervention for their acute MI, who had a 19% relative risk reduction on sacubitril/valsartan, compared with patients who received ramipril.

The study’s safety data showed nearly identical rates in the two treatment arms for total adverse events, serious adverse events, adverse events that led to stopping the study drug, as well as in laboratory measures. The biggest between-treatment differences were a modest excess of hypotension on sacubitril valsartan, 28%, compared with 22% on ramipril, and a modest excess rate of cough on ramipril, 13%, compared with 9% on sacubitril/valsartan.

The added insight the results provide about sacubitril/valsartan comes at a time when U.S. patients continue to struggle to get health insurance coverage for an agent that has been approved for U.S. use in treating heart failure since 2015.

“Our patients do not have access to this important treatment,” declared Dr. Walsh during the press briefing. “The prior authorization process is unbelievable, and some patients have no access unless they pay the full cost on their own. This is an important, real-world problem that we face with this drug.”

PARADISE-MI was sponsored by Novartis, the company that markets sacubitril/valsartan (Entresto). Dr. Pfeffer has received research funding from and is a consultant to Novartis. He is also a consultant to AstraZeneca, Boehringer Ingelheim, Corvidia, DalCor, Eli Lilly, GlaxoSmithKline, Novo Nordisk, Peerbridge, and Sanofi, and he holds equity in DalCor and Peerbridge. Dr. Stevenson has received honoraria from LivaNova and has received research support from Abbott. Dr. Walsh had no disclosures.

mzoler@mdedge.com

Death by self-harm through suicide or overdose is a leading cause of death for women in the first year post partum, data indicate. Many of these deaths may be preventable, said Adrienne Griffen, MPP, executive director of the Maternal Mental Health Leadership Alliance.

Ms. Griffen discussed these findings and ways clinicians may be able to help at the 2021 virtual meeting of the American College of Obstetricians and Gynecologists.

Women “visit a health care provider an average of 25 times during a healthy pregnancy and first year of baby’s life,” she said. “Obstetric and primary care providers who serve pregnant and postpartum women are uniquely positioned to intervene effectively to screen and assess women for mental health disorders.”

To that end, clinicians should discuss mental health “early and often,” Ms. Griffen said.

“Asking about mental health issues and suicide will not cause women to think these thoughts,” she said. “We cannot wait for women to raise their hand and ask for help because by the time they do that, they needed help many weeks ago.”

Obstetric providers can explain to patients that they will check on their mental health every visit, just as they do with their weight and blood pressure, Ms. Griffen said.

For example, a doctor might tell a patient: “Your mental health is just as important as your physical health, and anxiety and depression are the most common complications of pregnancy and childbirth,” Ms. Griffen suggested. “Every time I see you, I’m going to ask you how you are doing, and we’ll do a formal screening assessment periodically over the course of the pregnancy. … Your job is to answer us honestly so that we can connect you with resources as soon as possible to minimize the impact on you and your baby.”

Although the obstetric provider should introduce this topic, a nurse, lactation consultant, or social worker may conduct screenings and help patients who are experiencing distress, she said.

During the past decade, several medical associations have issued new guidance around screening new mothers for anxiety and depression. One recent ACOG committee opinion recommends screening for depression at least once during pregnancy and once post partum, and encourages doctors to initiate medical therapy if possible and provide resources and referrals.

Another committee opinion suggests that doctors should have contact with a patient between 2 and 3 weeks post partum, primarily to assess for mental health.
 

Limited data

In discussing maternal suicide statistics, Ms. Griffen focused on data from Maternal Mortality Review Committees (MMRCs).

Two other sources of data about maternal mortality – the National Vital Statistics System and the Pregnancy Mortality Surveillance System – do not include information about suicide, which may be a reason this cause of death is not discussed more often, Ms. Griffen noted.

MMRCs, on the other hand, include information about suicide and self-harm. About half of the states in the United States have these multidisciplinary committees. Committee members review deaths of all women during pregnancy or within 1 year of pregnancy. Members consider a range of clinical and nonclinical data, including reports from social services and police, to try to understand the circumstances of each death.

A report that examined pregnancy-related deaths using data from 14 U.S. MMRCs between 2008 and 2017 showed that mental health conditions were the leading cause of death for non-Hispanic White women. In all, 34% of pregnancy-related suicide deaths had a documented prior suicide attempt, and the majority of suicides happened in the late postpartum time frame (43-365 days post partum).

Some physicians cite a lack of education, time, reimbursement, or referral resources as barriers to maternal mental health screening and treatment, but there may be useful options available, Ms. Griffen said. Postpartum Support International provides resources for physicians, as well as mothers. The National Curriculum in Reproductive Psychiatry and the Seleni Institute also have educational resources.

Some states have psychiatry access programs, where psychiatrists educate obstetricians, family physicians, and pediatricians about how to assess for and treat maternal mental health issues, Ms. Griffen noted.

Self care, social support, and talk therapy may help patients. “Sometimes medication is needed, but a combination of all of these things … can help women recover from maternal mental health conditions,” Ms. Griffen said.
 

Need to intervene

Although medical societies have emphasized the importance of maternal mental health screening and treatment in recent years, the risk of self-harm has been a concern for obstetricians and gynecologists long before then, said Marc Alan Landsberg, MD, a member of the meeting’s scientific committee who moderated the session.

“We have been talking about this at ACOG for a long time,” Dr. Landsberg said in an interview.

The presentation highlighted why obstetricians, gynecologists, and other doctors who deliver babies and care for women post partum “have got to screen these people,” he said. The finding that 34% of pregnancy-related suicide deaths had a prior suicide attempt indicates that clinicians may be able to identify these patients, Dr. Landsberg said. Suicide and overdose are leading causes of death in the first year post partum and “probably 100% of these are preventable,” he said.

As a first step, screening may be relatively simple. The Edinburgh Postnatal Depression Scale, highlighted during the talk, is an easy and quick tool to use, Dr. Landsberg said. It contains 10 items and assesses for anxiety and depression. It also specifically asks about suicide.

Ms. Griffen and Dr. Landsberg had no conflicts of interest.

jremaly@mdedge.com

Death by self-harm through suicide or overdose is a leading cause of death for women in the first year post partum, data indicate. Many of these deaths may be preventable, said Adrienne Griffen, MPP, executive director of the Maternal Mental Health Leadership Alliance.

Ms. Griffen discussed these findings and ways clinicians may be able to help at the 2021 virtual meeting of the American College of Obstetricians and Gynecologists.

Women “visit a health care provider an average of 25 times during a healthy pregnancy and first year of baby’s life,” she said. “Obstetric and primary care providers who serve pregnant and postpartum women are uniquely positioned to intervene effectively to screen and assess women for mental health disorders.”

To that end, clinicians should discuss mental health “early and often,” Ms. Griffen said.

“Asking about mental health issues and suicide will not cause women to think these thoughts,” she said. “We cannot wait for women to raise their hand and ask for help because by the time they do that, they needed help many weeks ago.”

Obstetric providers can explain to patients that they will check on their mental health every visit, just as they do with their weight and blood pressure, Ms. Griffen said.

For example, a doctor might tell a patient: “Your mental health is just as important as your physical health, and anxiety and depression are the most common complications of pregnancy and childbirth,” Ms. Griffen suggested. “Every time I see you, I’m going to ask you how you are doing, and we’ll do a formal screening assessment periodically over the course of the pregnancy. … Your job is to answer us honestly so that we can connect you with resources as soon as possible to minimize the impact on you and your baby.”

Although the obstetric provider should introduce this topic, a nurse, lactation consultant, or social worker may conduct screenings and help patients who are experiencing distress, she said.

During the past decade, several medical associations have issued new guidance around screening new mothers for anxiety and depression. One recent ACOG committee opinion recommends screening for depression at least once during pregnancy and once post partum, and encourages doctors to initiate medical therapy if possible and provide resources and referrals.

Another committee opinion suggests that doctors should have contact with a patient between 2 and 3 weeks post partum, primarily to assess for mental health.
 

Limited data

In discussing maternal suicide statistics, Ms. Griffen focused on data from Maternal Mortality Review Committees (MMRCs).

Two other sources of data about maternal mortality – the National Vital Statistics System and the Pregnancy Mortality Surveillance System – do not include information about suicide, which may be a reason this cause of death is not discussed more often, Ms. Griffen noted.

MMRCs, on the other hand, include information about suicide and self-harm. About half of the states in the United States have these multidisciplinary committees. Committee members review deaths of all women during pregnancy or within 1 year of pregnancy. Members consider a range of clinical and nonclinical data, including reports from social services and police, to try to understand the circumstances of each death.

A report that examined pregnancy-related deaths using data from 14 U.S. MMRCs between 2008 and 2017 showed that mental health conditions were the leading cause of death for non-Hispanic White women. In all, 34% of pregnancy-related suicide deaths had a documented prior suicide attempt, and the majority of suicides happened in the late postpartum time frame (43-365 days post partum).

Some physicians cite a lack of education, time, reimbursement, or referral resources as barriers to maternal mental health screening and treatment, but there may be useful options available, Ms. Griffen said. Postpartum Support International provides resources for physicians, as well as mothers. The National Curriculum in Reproductive Psychiatry and the Seleni Institute also have educational resources.

Some states have psychiatry access programs, where psychiatrists educate obstetricians, family physicians, and pediatricians about how to assess for and treat maternal mental health issues, Ms. Griffen noted.

Self care, social support, and talk therapy may help patients. “Sometimes medication is needed, but a combination of all of these things … can help women recover from maternal mental health conditions,” Ms. Griffen said.
 

Need to intervene

Although medical societies have emphasized the importance of maternal mental health screening and treatment in recent years, the risk of self-harm has been a concern for obstetricians and gynecologists long before then, said Marc Alan Landsberg, MD, a member of the meeting’s scientific committee who moderated the session.

“We have been talking about this at ACOG for a long time,” Dr. Landsberg said in an interview.

The presentation highlighted why obstetricians, gynecologists, and other doctors who deliver babies and care for women post partum “have got to screen these people,” he said. The finding that 34% of pregnancy-related suicide deaths had a prior suicide attempt indicates that clinicians may be able to identify these patients, Dr. Landsberg said. Suicide and overdose are leading causes of death in the first year post partum and “probably 100% of these are preventable,” he said.

As a first step, screening may be relatively simple. The Edinburgh Postnatal Depression Scale, highlighted during the talk, is an easy and quick tool to use, Dr. Landsberg said. It contains 10 items and assesses for anxiety and depression. It also specifically asks about suicide.

Ms. Griffen and Dr. Landsberg had no conflicts of interest.

jremaly@mdedge.com

Death by self-harm through suicide or overdose is a leading cause of death for women in the first year post partum, data indicate. Many of these deaths may be preventable, said Adrienne Griffen, MPP, executive director of the Maternal Mental Health Leadership Alliance.

Ms. Griffen discussed these findings and ways clinicians may be able to help at the 2021 virtual meeting of the American College of Obstetricians and Gynecologists.

Women “visit a health care provider an average of 25 times during a healthy pregnancy and first year of baby’s life,” she said. “Obstetric and primary care providers who serve pregnant and postpartum women are uniquely positioned to intervene effectively to screen and assess women for mental health disorders.”

To that end, clinicians should discuss mental health “early and often,” Ms. Griffen said.

“Asking about mental health issues and suicide will not cause women to think these thoughts,” she said. “We cannot wait for women to raise their hand and ask for help because by the time they do that, they needed help many weeks ago.”

Obstetric providers can explain to patients that they will check on their mental health every visit, just as they do with their weight and blood pressure, Ms. Griffen said.

For example, a doctor might tell a patient: “Your mental health is just as important as your physical health, and anxiety and depression are the most common complications of pregnancy and childbirth,” Ms. Griffen suggested. “Every time I see you, I’m going to ask you how you are doing, and we’ll do a formal screening assessment periodically over the course of the pregnancy. … Your job is to answer us honestly so that we can connect you with resources as soon as possible to minimize the impact on you and your baby.”

Although the obstetric provider should introduce this topic, a nurse, lactation consultant, or social worker may conduct screenings and help patients who are experiencing distress, she said.

During the past decade, several medical associations have issued new guidance around screening new mothers for anxiety and depression. One recent ACOG committee opinion recommends screening for depression at least once during pregnancy and once post partum, and encourages doctors to initiate medical therapy if possible and provide resources and referrals.

Another committee opinion suggests that doctors should have contact with a patient between 2 and 3 weeks post partum, primarily to assess for mental health.
 

Limited data

In discussing maternal suicide statistics, Ms. Griffen focused on data from Maternal Mortality Review Committees (MMRCs).

Two other sources of data about maternal mortality – the National Vital Statistics System and the Pregnancy Mortality Surveillance System – do not include information about suicide, which may be a reason this cause of death is not discussed more often, Ms. Griffen noted.

MMRCs, on the other hand, include information about suicide and self-harm. About half of the states in the United States have these multidisciplinary committees. Committee members review deaths of all women during pregnancy or within 1 year of pregnancy. Members consider a range of clinical and nonclinical data, including reports from social services and police, to try to understand the circumstances of each death.

A report that examined pregnancy-related deaths using data from 14 U.S. MMRCs between 2008 and 2017 showed that mental health conditions were the leading cause of death for non-Hispanic White women. In all, 34% of pregnancy-related suicide deaths had a documented prior suicide attempt, and the majority of suicides happened in the late postpartum time frame (43-365 days post partum).

Some physicians cite a lack of education, time, reimbursement, or referral resources as barriers to maternal mental health screening and treatment, but there may be useful options available, Ms. Griffen said. Postpartum Support International provides resources for physicians, as well as mothers. The National Curriculum in Reproductive Psychiatry and the Seleni Institute also have educational resources.

Some states have psychiatry access programs, where psychiatrists educate obstetricians, family physicians, and pediatricians about how to assess for and treat maternal mental health issues, Ms. Griffen noted.

Self care, social support, and talk therapy may help patients. “Sometimes medication is needed, but a combination of all of these things … can help women recover from maternal mental health conditions,” Ms. Griffen said.
 

Need to intervene

Although medical societies have emphasized the importance of maternal mental health screening and treatment in recent years, the risk of self-harm has been a concern for obstetricians and gynecologists long before then, said Marc Alan Landsberg, MD, a member of the meeting’s scientific committee who moderated the session.

“We have been talking about this at ACOG for a long time,” Dr. Landsberg said in an interview.

The presentation highlighted why obstetricians, gynecologists, and other doctors who deliver babies and care for women post partum “have got to screen these people,” he said. The finding that 34% of pregnancy-related suicide deaths had a prior suicide attempt indicates that clinicians may be able to identify these patients, Dr. Landsberg said. Suicide and overdose are leading causes of death in the first year post partum and “probably 100% of these are preventable,” he said.

As a first step, screening may be relatively simple. The Edinburgh Postnatal Depression Scale, highlighted during the talk, is an easy and quick tool to use, Dr. Landsberg said. It contains 10 items and assesses for anxiety and depression. It also specifically asks about suicide.

Ms. Griffen and Dr. Landsberg had no conflicts of interest.

jremaly@mdedge.com

Copeptin, a small peptide secreted with the hormone vasopressin, appears to be one of the first promising biomarkers for predicting psychosis relapse, results of an observational study suggest.

An analysis of plasma copeptin levels in patients with schizophrenia showed those with high plasma levels of the peptide were about three times more likely to experience psychotic relapse, compared with their counterparts with lower levels.

The results suggest, “copeptin could be a promising biomarker in predicting psychotic relapse in schizophrenia spectrum disorder,” said study investigator Jennifer Küster, MD, University Psychiatric Clinics Basel (Switzerland). Measuring copeptin levels upon hospital admission “could help to intensify” the care of at-risk patients, she added.

The findings were presented at the virtual Congress of the Schizophrenia International Research Society 2021.
 

Relapse prevention important

Two-thirds of patients with schizophrenia experience at least one relapse of a psychotic episode, which in turn increases the risk of the disorder having a chronic course, Dr. Küster noted.

In addition, a psychotic relapse is associated with deterioration of function and cognition and reduced treatment response, “so relapse prevention is important,” she said.

Previous research has explored various methods of predicting schizophrenia outcomes. These include measuring inflammatory markers, catecholamines, oxytocin, and cortisol in combination with imaging markers, “but so far no reliable biomarker has been found,” Dr. Küster said.

She noted that psychotic relapse is associated with increased psychological stress – and vasopressin, which is secreted by the pituitary gland, is a known marker of stress. It is involved in sodium homeostasis and higher brain function and is also elevated in acute psychosis.

However, vasopressin “is challenging to measure because assays are complicated and unreliable,” Dr. Küster said.

As a result, the researchers turned their attention to copeptin, a more stable, more reliable surrogate marker for vasopressin. Copeptin has been shown previously to be a predictor of outcomes in somatic diseases and is also increased during psychological distress.

To measure the utility of copeptin in predicting psychotic relapse, the researchers conducted a prospective, explorative, single-center observational study involving inpatients with an acute psychotic episode diagnosed with schizophrenia spectrum disorder or affective disorder.

Baseline characteristics were collected and fasting serum copeptin levels were measured. Disease severity was measured using a range of validated assessment scales.
 

Predictive factor

Among 69 patients available for analysis, 30 experienced psychotic relapse at 1-year follow-up. Relapse was defined as rehospitalization because of an acute psychotic episode.

There were no differences in baseline demographic characteristics between patients with, and without, psychotic relapse. There were also no differences in baseline psychopathology, including scores on the Positive and Negative Syndrome Scale, the Beck Depression Inventory, and the Global Assessment of Function.

Dr. Küster noted that there were no overall differences between patients with and without psychotic relapse in terms of their plasma copeptin or cortisol levels at baseline.

“The only difference we saw was in diagnosis,” she reported. Patients with psychotic relapse were significantly more likely to have comorbid drug abuse – 43% in patients who relapsed versus 15% of those who did not (P = .02).

However, when the investigators calculated the area under the receiver operating characteristics curve for copeptin levels, they found there was a significant difference in relapse rates in those with copeptin levels >6 pmol/L vs. those with lower levels (hazard ratio, 2.3; P = .039).

When the focus was on only patients with schizophrenia spectrum disorder, the results were even more pronounced. The HR for psychotic relapse in patients with higher vs. lower copeptin levels was 3.2 (P = .028).

“We also looked for other possible predicting factors,” Dr. Küster said. This included sex, age, duration of disease, reason for hospitalization, psychopathology, medication, comorbidities, and cortisol levels. “But none of these factors was associated with psychotic relapse,” she added.

The only factor positively associated with relapse was drug abuse, primarily via marijuana. However, the association with copeptin remained significant even after taking this factor into account.

In future studies, the researchers plan to examine whether copeptin levels could identify which patients at ultra-high risk will transition to first-episode psychosis, as well as to predict development of posttraumatic stress disorder, Dr. Küster said.
 

A proxy for ‘something simpler’?

Commenting on the findings for this news organization, Leah H. Rubin, PhD, associate professor of neurology, Johns Hopkins University, Baltimore, described the study as “interesting” – and noted that her own research has included measuring vasopressin in patients with untreated first-episode psychosis.

Dr. Rubin’s findings showed that levels of the hormone were associated with psychosis severity, and thus she is “not surprised that they found a marker” that may be promising in psychosis relapse prediction.

However, she took issue with the notion that vasopressin is an unreliable marker, pointing out that the work of her team demonstrates that it can be measured. Dr. Rubin added that she found it to be “pretty stable.”

In addition, because the current study had a small sample size, Dr. Rubin said she would be interested to see whether the findings can be replicated on a larger scale.

She also noted that more than two-thirds of the study population were men. “Vasopressin and oxytocin are sexually dimorphic neuropeptides,” she explained, “so I think it becomes important to ensure ... whether it’s the same for men and women.”

“Just from a psychosocial perspective, what’s going on in those folks’ lives?” Dr. Rubin asked. “Is it truly copeptin” or is it high stress levels that facilitate a relapse? Copeptin levels, she added, may be “a proxy for something simpler.”

The study authors and Dr. Rubin have disclosed no relevant financial relationships.

A version of this article first appeared on Medscape.com.

Copeptin, a small peptide secreted with the hormone vasopressin, appears to be one of the first promising biomarkers for predicting psychosis relapse, results of an observational study suggest.

An analysis of plasma copeptin levels in patients with schizophrenia showed those with high plasma levels of the peptide were about three times more likely to experience psychotic relapse, compared with their counterparts with lower levels.

The results suggest, “copeptin could be a promising biomarker in predicting psychotic relapse in schizophrenia spectrum disorder,” said study investigator Jennifer Küster, MD, University Psychiatric Clinics Basel (Switzerland). Measuring copeptin levels upon hospital admission “could help to intensify” the care of at-risk patients, she added.

The findings were presented at the virtual Congress of the Schizophrenia International Research Society 2021.
 

Relapse prevention important

Two-thirds of patients with schizophrenia experience at least one relapse of a psychotic episode, which in turn increases the risk of the disorder having a chronic course, Dr. Küster noted.

In addition, a psychotic relapse is associated with deterioration of function and cognition and reduced treatment response, “so relapse prevention is important,” she said.

Previous research has explored various methods of predicting schizophrenia outcomes. These include measuring inflammatory markers, catecholamines, oxytocin, and cortisol in combination with imaging markers, “but so far no reliable biomarker has been found,” Dr. Küster said.

She noted that psychotic relapse is associated with increased psychological stress – and vasopressin, which is secreted by the pituitary gland, is a known marker of stress. It is involved in sodium homeostasis and higher brain function and is also elevated in acute psychosis.

However, vasopressin “is challenging to measure because assays are complicated and unreliable,” Dr. Küster said.

As a result, the researchers turned their attention to copeptin, a more stable, more reliable surrogate marker for vasopressin. Copeptin has been shown previously to be a predictor of outcomes in somatic diseases and is also increased during psychological distress.

To measure the utility of copeptin in predicting psychotic relapse, the researchers conducted a prospective, explorative, single-center observational study involving inpatients with an acute psychotic episode diagnosed with schizophrenia spectrum disorder or affective disorder.

Baseline characteristics were collected and fasting serum copeptin levels were measured. Disease severity was measured using a range of validated assessment scales.
 

Predictive factor

Among 69 patients available for analysis, 30 experienced psychotic relapse at 1-year follow-up. Relapse was defined as rehospitalization because of an acute psychotic episode.

There were no differences in baseline demographic characteristics between patients with, and without, psychotic relapse. There were also no differences in baseline psychopathology, including scores on the Positive and Negative Syndrome Scale, the Beck Depression Inventory, and the Global Assessment of Function.

Dr. Küster noted that there were no overall differences between patients with and without psychotic relapse in terms of their plasma copeptin or cortisol levels at baseline.

“The only difference we saw was in diagnosis,” she reported. Patients with psychotic relapse were significantly more likely to have comorbid drug abuse – 43% in patients who relapsed versus 15% of those who did not (P = .02).

However, when the investigators calculated the area under the receiver operating characteristics curve for copeptin levels, they found there was a significant difference in relapse rates in those with copeptin levels >6 pmol/L vs. those with lower levels (hazard ratio, 2.3; P = .039).

When the focus was on only patients with schizophrenia spectrum disorder, the results were even more pronounced. The HR for psychotic relapse in patients with higher vs. lower copeptin levels was 3.2 (P = .028).

“We also looked for other possible predicting factors,” Dr. Küster said. This included sex, age, duration of disease, reason for hospitalization, psychopathology, medication, comorbidities, and cortisol levels. “But none of these factors was associated with psychotic relapse,” she added.

The only factor positively associated with relapse was drug abuse, primarily via marijuana. However, the association with copeptin remained significant even after taking this factor into account.

In future studies, the researchers plan to examine whether copeptin levels could identify which patients at ultra-high risk will transition to first-episode psychosis, as well as to predict development of posttraumatic stress disorder, Dr. Küster said.
 

A proxy for ‘something simpler’?

Commenting on the findings for this news organization, Leah H. Rubin, PhD, associate professor of neurology, Johns Hopkins University, Baltimore, described the study as “interesting” – and noted that her own research has included measuring vasopressin in patients with untreated first-episode psychosis.

Dr. Rubin’s findings showed that levels of the hormone were associated with psychosis severity, and thus she is “not surprised that they found a marker” that may be promising in psychosis relapse prediction.

However, she took issue with the notion that vasopressin is an unreliable marker, pointing out that the work of her team demonstrates that it can be measured. Dr. Rubin added that she found it to be “pretty stable.”

In addition, because the current study had a small sample size, Dr. Rubin said she would be interested to see whether the findings can be replicated on a larger scale.

She also noted that more than two-thirds of the study population were men. “Vasopressin and oxytocin are sexually dimorphic neuropeptides,” she explained, “so I think it becomes important to ensure ... whether it’s the same for men and women.”

“Just from a psychosocial perspective, what’s going on in those folks’ lives?” Dr. Rubin asked. “Is it truly copeptin” or is it high stress levels that facilitate a relapse? Copeptin levels, she added, may be “a proxy for something simpler.”

The study authors and Dr. Rubin have disclosed no relevant financial relationships.

A version of this article first appeared on Medscape.com.

Copeptin, a small peptide secreted with the hormone vasopressin, appears to be one of the first promising biomarkers for predicting psychosis relapse, results of an observational study suggest.

An analysis of plasma copeptin levels in patients with schizophrenia showed those with high plasma levels of the peptide were about three times more likely to experience psychotic relapse, compared with their counterparts with lower levels.

The results suggest, “copeptin could be a promising biomarker in predicting psychotic relapse in schizophrenia spectrum disorder,” said study investigator Jennifer Küster, MD, University Psychiatric Clinics Basel (Switzerland). Measuring copeptin levels upon hospital admission “could help to intensify” the care of at-risk patients, she added.

The findings were presented at the virtual Congress of the Schizophrenia International Research Society 2021.
 

Relapse prevention important

Two-thirds of patients with schizophrenia experience at least one relapse of a psychotic episode, which in turn increases the risk of the disorder having a chronic course, Dr. Küster noted.

In addition, a psychotic relapse is associated with deterioration of function and cognition and reduced treatment response, “so relapse prevention is important,” she said.

Previous research has explored various methods of predicting schizophrenia outcomes. These include measuring inflammatory markers, catecholamines, oxytocin, and cortisol in combination with imaging markers, “but so far no reliable biomarker has been found,” Dr. Küster said.

She noted that psychotic relapse is associated with increased psychological stress – and vasopressin, which is secreted by the pituitary gland, is a known marker of stress. It is involved in sodium homeostasis and higher brain function and is also elevated in acute psychosis.

However, vasopressin “is challenging to measure because assays are complicated and unreliable,” Dr. Küster said.

As a result, the researchers turned their attention to copeptin, a more stable, more reliable surrogate marker for vasopressin. Copeptin has been shown previously to be a predictor of outcomes in somatic diseases and is also increased during psychological distress.

To measure the utility of copeptin in predicting psychotic relapse, the researchers conducted a prospective, explorative, single-center observational study involving inpatients with an acute psychotic episode diagnosed with schizophrenia spectrum disorder or affective disorder.

Baseline characteristics were collected and fasting serum copeptin levels were measured. Disease severity was measured using a range of validated assessment scales.
 

Predictive factor

Among 69 patients available for analysis, 30 experienced psychotic relapse at 1-year follow-up. Relapse was defined as rehospitalization because of an acute psychotic episode.

There were no differences in baseline demographic characteristics between patients with, and without, psychotic relapse. There were also no differences in baseline psychopathology, including scores on the Positive and Negative Syndrome Scale, the Beck Depression Inventory, and the Global Assessment of Function.

Dr. Küster noted that there were no overall differences between patients with and without psychotic relapse in terms of their plasma copeptin or cortisol levels at baseline.

“The only difference we saw was in diagnosis,” she reported. Patients with psychotic relapse were significantly more likely to have comorbid drug abuse – 43% in patients who relapsed versus 15% of those who did not (P = .02).

However, when the investigators calculated the area under the receiver operating characteristics curve for copeptin levels, they found there was a significant difference in relapse rates in those with copeptin levels >6 pmol/L vs. those with lower levels (hazard ratio, 2.3; P = .039).

When the focus was on only patients with schizophrenia spectrum disorder, the results were even more pronounced. The HR for psychotic relapse in patients with higher vs. lower copeptin levels was 3.2 (P = .028).

“We also looked for other possible predicting factors,” Dr. Küster said. This included sex, age, duration of disease, reason for hospitalization, psychopathology, medication, comorbidities, and cortisol levels. “But none of these factors was associated with psychotic relapse,” she added.

The only factor positively associated with relapse was drug abuse, primarily via marijuana. However, the association with copeptin remained significant even after taking this factor into account.

In future studies, the researchers plan to examine whether copeptin levels could identify which patients at ultra-high risk will transition to first-episode psychosis, as well as to predict development of posttraumatic stress disorder, Dr. Küster said.
 

A proxy for ‘something simpler’?

Commenting on the findings for this news organization, Leah H. Rubin, PhD, associate professor of neurology, Johns Hopkins University, Baltimore, described the study as “interesting” – and noted that her own research has included measuring vasopressin in patients with untreated first-episode psychosis.

Dr. Rubin’s findings showed that levels of the hormone were associated with psychosis severity, and thus she is “not surprised that they found a marker” that may be promising in psychosis relapse prediction.

However, she took issue with the notion that vasopressin is an unreliable marker, pointing out that the work of her team demonstrates that it can be measured. Dr. Rubin added that she found it to be “pretty stable.”

In addition, because the current study had a small sample size, Dr. Rubin said she would be interested to see whether the findings can be replicated on a larger scale.

She also noted that more than two-thirds of the study population were men. “Vasopressin and oxytocin are sexually dimorphic neuropeptides,” she explained, “so I think it becomes important to ensure ... whether it’s the same for men and women.”

“Just from a psychosocial perspective, what’s going on in those folks’ lives?” Dr. Rubin asked. “Is it truly copeptin” or is it high stress levels that facilitate a relapse? Copeptin levels, she added, may be “a proxy for something simpler.”

The study authors and Dr. Rubin have disclosed no relevant financial relationships.

A version of this article first appeared on Medscape.com.

A study of long-term outcomes after medial opening wedge high tibial osteotomy for knee osteoarthritis suggests the procedure is associated with significant and sustained improvements in pain, function, quality of life, and gait biomechanics.

At the OARSI 2021 World Congress, PhD candidate Codie Primeau, MSc, of the Fowler Kennedy Sport Medicine Clinic at the University of Western Ontario, London, presented the findings from a 10-year prospective cohort study of 102 patients with symptomatic medial compartment knee osteoarthritis who underwent medial opening wedge high tibial osteotomy but did not get a total knee replacement during the study.

The surgical procedure aims to correct malalignment by redistributing knee joint loads away from the affected compartment of the knee, with the ultimate goal of slowing disease progression and improving pain and function, Mr. Primeau told the conference, which was sponsored by the Osteoarthritis Research Society International.

At 10 years, the procedure was associated with a mean 14.3-point improvement in the 0-100 Knee Injury and Osteoarthritis Outcome Score (KOOS) for pain, a mean 12-point improvement in the score for function in daily living, a 15.5-point improvement in the score for function in sport and recreation, and a 24.5-point improvement in knee-related quality of life score. Researchers also saw a 35%-45% reduction in the magnitude of the external knee adduction moment from baseline, and a gradual reduction in the knee flexion moment over the course of the study.

While the improvements did decline somewhat over the 10 years, 53% of patients still met the criteria for responder at the end of the follow-up period, meaning that they had a relative change of at least 20% in both KOOS pain and function scores, and an absolute change of at least 10 points.

Mr. Primeau noted that the patient population represented those who were the best candidates for high tibial osteotomy, in that they were keen to avoid total knee replacement.

“While these types of patients may have the best outcomes, our studies suggest patients traditionally not considered ideal candidates for HTO [high tibial osteotomy] – such as females, and patients with limited disease in other knee compartments – also have large improvements in pain and function after HTO, and around 70% of those patients do not get a total knee replacement within 10 years,” he said in an interview.

Mr. Primeau suggested that the improvements achieved with high tibial osteotomy might extend the time before a knee replacement is required, or even help some patients avoid it altogether.

“Importantly, recent studies show HTO does not complicate future joint replacement surgery,” he said. “One can get a knee replacement after HTO; the reverse is not possible.”

The ideal patient for a high tibial osteotomy would be one whose osteoarthritis was confined to the medial compartment of the knee, was younger – in their 40s or 50s – and with relatively high activity levels, he said. Some studies also suggest better outcomes in men than women.

In response to an audience question about the rehabilitation requirements after high tibial osteotomy, Mr. Primeau commented that the design of the plates used in the procedure have changed over time, and this has influenced rehabilitation needs. When the study began, patients needed anywhere from 8 to 12 weeks of no weight bearing, using crutches, to allow for bone consolidation to occur.

“Since then, plate designs have changed a lot, and patients are able to start ambulating as early as 2 weeks after the surgery now,” he said. The rehabilitation is similar to what is required for knee osteoarthritis in general, focusing on range of motion, strengthening, proprioception, and muscle training.

No conflicts of interest were declared.

A study of long-term outcomes after medial opening wedge high tibial osteotomy for knee osteoarthritis suggests the procedure is associated with significant and sustained improvements in pain, function, quality of life, and gait biomechanics.

At the OARSI 2021 World Congress, PhD candidate Codie Primeau, MSc, of the Fowler Kennedy Sport Medicine Clinic at the University of Western Ontario, London, presented the findings from a 10-year prospective cohort study of 102 patients with symptomatic medial compartment knee osteoarthritis who underwent medial opening wedge high tibial osteotomy but did not get a total knee replacement during the study.

The surgical procedure aims to correct malalignment by redistributing knee joint loads away from the affected compartment of the knee, with the ultimate goal of slowing disease progression and improving pain and function, Mr. Primeau told the conference, which was sponsored by the Osteoarthritis Research Society International.

At 10 years, the procedure was associated with a mean 14.3-point improvement in the 0-100 Knee Injury and Osteoarthritis Outcome Score (KOOS) for pain, a mean 12-point improvement in the score for function in daily living, a 15.5-point improvement in the score for function in sport and recreation, and a 24.5-point improvement in knee-related quality of life score. Researchers also saw a 35%-45% reduction in the magnitude of the external knee adduction moment from baseline, and a gradual reduction in the knee flexion moment over the course of the study.

While the improvements did decline somewhat over the 10 years, 53% of patients still met the criteria for responder at the end of the follow-up period, meaning that they had a relative change of at least 20% in both KOOS pain and function scores, and an absolute change of at least 10 points.

Mr. Primeau noted that the patient population represented those who were the best candidates for high tibial osteotomy, in that they were keen to avoid total knee replacement.

“While these types of patients may have the best outcomes, our studies suggest patients traditionally not considered ideal candidates for HTO [high tibial osteotomy] – such as females, and patients with limited disease in other knee compartments – also have large improvements in pain and function after HTO, and around 70% of those patients do not get a total knee replacement within 10 years,” he said in an interview.

Mr. Primeau suggested that the improvements achieved with high tibial osteotomy might extend the time before a knee replacement is required, or even help some patients avoid it altogether.

“Importantly, recent studies show HTO does not complicate future joint replacement surgery,” he said. “One can get a knee replacement after HTO; the reverse is not possible.”

The ideal patient for a high tibial osteotomy would be one whose osteoarthritis was confined to the medial compartment of the knee, was younger – in their 40s or 50s – and with relatively high activity levels, he said. Some studies also suggest better outcomes in men than women.

In response to an audience question about the rehabilitation requirements after high tibial osteotomy, Mr. Primeau commented that the design of the plates used in the procedure have changed over time, and this has influenced rehabilitation needs. When the study began, patients needed anywhere from 8 to 12 weeks of no weight bearing, using crutches, to allow for bone consolidation to occur.

“Since then, plate designs have changed a lot, and patients are able to start ambulating as early as 2 weeks after the surgery now,” he said. The rehabilitation is similar to what is required for knee osteoarthritis in general, focusing on range of motion, strengthening, proprioception, and muscle training.

No conflicts of interest were declared.

A study of long-term outcomes after medial opening wedge high tibial osteotomy for knee osteoarthritis suggests the procedure is associated with significant and sustained improvements in pain, function, quality of life, and gait biomechanics.

At the OARSI 2021 World Congress, PhD candidate Codie Primeau, MSc, of the Fowler Kennedy Sport Medicine Clinic at the University of Western Ontario, London, presented the findings from a 10-year prospective cohort study of 102 patients with symptomatic medial compartment knee osteoarthritis who underwent medial opening wedge high tibial osteotomy but did not get a total knee replacement during the study.

The surgical procedure aims to correct malalignment by redistributing knee joint loads away from the affected compartment of the knee, with the ultimate goal of slowing disease progression and improving pain and function, Mr. Primeau told the conference, which was sponsored by the Osteoarthritis Research Society International.

At 10 years, the procedure was associated with a mean 14.3-point improvement in the 0-100 Knee Injury and Osteoarthritis Outcome Score (KOOS) for pain, a mean 12-point improvement in the score for function in daily living, a 15.5-point improvement in the score for function in sport and recreation, and a 24.5-point improvement in knee-related quality of life score. Researchers also saw a 35%-45% reduction in the magnitude of the external knee adduction moment from baseline, and a gradual reduction in the knee flexion moment over the course of the study.

While the improvements did decline somewhat over the 10 years, 53% of patients still met the criteria for responder at the end of the follow-up period, meaning that they had a relative change of at least 20% in both KOOS pain and function scores, and an absolute change of at least 10 points.

Mr. Primeau noted that the patient population represented those who were the best candidates for high tibial osteotomy, in that they were keen to avoid total knee replacement.

“While these types of patients may have the best outcomes, our studies suggest patients traditionally not considered ideal candidates for HTO [high tibial osteotomy] – such as females, and patients with limited disease in other knee compartments – also have large improvements in pain and function after HTO, and around 70% of those patients do not get a total knee replacement within 10 years,” he said in an interview.

Mr. Primeau suggested that the improvements achieved with high tibial osteotomy might extend the time before a knee replacement is required, or even help some patients avoid it altogether.

“Importantly, recent studies show HTO does not complicate future joint replacement surgery,” he said. “One can get a knee replacement after HTO; the reverse is not possible.”

The ideal patient for a high tibial osteotomy would be one whose osteoarthritis was confined to the medial compartment of the knee, was younger – in their 40s or 50s – and with relatively high activity levels, he said. Some studies also suggest better outcomes in men than women.

In response to an audience question about the rehabilitation requirements after high tibial osteotomy, Mr. Primeau commented that the design of the plates used in the procedure have changed over time, and this has influenced rehabilitation needs. When the study began, patients needed anywhere from 8 to 12 weeks of no weight bearing, using crutches, to allow for bone consolidation to occur.

“Since then, plate designs have changed a lot, and patients are able to start ambulating as early as 2 weeks after the surgery now,” he said. The rehabilitation is similar to what is required for knee osteoarthritis in general, focusing on range of motion, strengthening, proprioception, and muscle training.

No conflicts of interest were declared.

Selective use of antibiotics based on birth circumstances may reduce unnecessary antibiotic exposure for preterm infants at risk of early-onset sepsis, based on data from 340 preterm infants at a single center.

Preterm infants born because of preterm labor, premature rupture of membranes, and/or intraamniotic infection (IAI) are considered at increased risk for early-onset sepsis, and current management strategies include a blood culture and initiation of empirical antibiotics, said Kirtan Patel, MD, of Texas A&M University, Dallas, and colleagues in a poster (# 1720) presented at the Pediatric Academic Societies annual meeting.

However, this blanket approach “may increase the unnecessary early antibiotic exposure in preterm infants possibly leading to future adverse health outcomes,” and physicians are advised to review the risks and benefits, Dr. Patel said.

Data from previous studies suggest that preterm infants born as a result of preterm labor and/or premature rupture of membranes with adequate Group B Streptococcus (GBS) intrapartum antibiotic prophylaxis and no indication of IAI may be managed without empiric antibiotics because the early-onset sepsis risk in these infants is much lower than the ones born through IAI and inadequate GBS intrapartum antibiotic prophylaxis.

To better identify preterm birth circumstances in which antibiotics might be avoided, the researchers conducted a retrospective cohort study of preterm infants born at 28-34 weeks’ gestation during the period from Jan. 1, 2015, to Dec. 31, 2018. These infants were in the low-risk category of preterm birth because of preterm labor or premature rupture of membranes, with no IAI and adequate GBS intrapartum antibiotic prophylaxis, and no signs of cardiovascular or respiratory instability after birth. Of these, 157 (46.2%) received empiric antibiotics soon after birth and 183 infants (53.8%) did not receive empiric antibiotics.

The mean gestational age and birth weight were significantly lower in the empiric antibiotic group, but after correcting for these variables, the factors with the greatest influence on the initiation of antibiotics were maternal intrapartum antibiotic prophylaxis (odds ratio, 3.13); premature rupture of membranes (OR, 3.75); use of continuous positive airway pressure (CPAP) in the delivery room (OR, 1.84); CPAP on admission to the neonatal intensive care unit (OR, 1.94); drawing a blood culture (OR, 13.72); and a complete blood count with immature to total neutrophil ratio greater than 0.2 (OR, 3.84).

Three infants (2%) in the antibiotics group had culture-positive early-onset sepsis with Escherichia coli, compared with no infants in the no-antibiotics group. No differences in short-term hospital outcomes appeared between the two groups. The study was limited in part by the retrospective design and sample size, the researchers noted.

However, the results support a selective approach to antibiotics for preterm infants, taking various birth circumstances into account, they said.
 

Further risk factor identification could curb antibiotic use

In this study, empiric antibiotics were cast as a wide net to avoid missing serious infections in a few patients, said Tim Joos, MD, a Seattle-based clinician with a combination internal medicine/pediatrics practice, in an interview.

“It is interesting in this retrospective review of 340 preterm infants that the three newborns that did have serious bacterial infection were correctly given empiric antibiotics from the start,” Dr. Joos noted. “The authors were very effective at elucidating the possible factors that go into starting or not starting empiric antibiotics, although there may be other factors in the clinician’s judgment that are being missed. … More studies are needed on this topic,” Dr. Joos said. “Further research examining how the septic newborns differ from the nonseptic ones could help to even further narrow the use of empiric antibiotics,” he added.

The study received no outside funding. The researchers had no financial conflicts to disclose. Dr. Joos had no financial conflicts to disclose, but serves as a member of the Pediatric News Editorial Advisory Board.

Selective use of antibiotics based on birth circumstances may reduce unnecessary antibiotic exposure for preterm infants at risk of early-onset sepsis, based on data from 340 preterm infants at a single center.

Preterm infants born because of preterm labor, premature rupture of membranes, and/or intraamniotic infection (IAI) are considered at increased risk for early-onset sepsis, and current management strategies include a blood culture and initiation of empirical antibiotics, said Kirtan Patel, MD, of Texas A&M University, Dallas, and colleagues in a poster (# 1720) presented at the Pediatric Academic Societies annual meeting.

However, this blanket approach “may increase the unnecessary early antibiotic exposure in preterm infants possibly leading to future adverse health outcomes,” and physicians are advised to review the risks and benefits, Dr. Patel said.

Data from previous studies suggest that preterm infants born as a result of preterm labor and/or premature rupture of membranes with adequate Group B Streptococcus (GBS) intrapartum antibiotic prophylaxis and no indication of IAI may be managed without empiric antibiotics because the early-onset sepsis risk in these infants is much lower than the ones born through IAI and inadequate GBS intrapartum antibiotic prophylaxis.

To better identify preterm birth circumstances in which antibiotics might be avoided, the researchers conducted a retrospective cohort study of preterm infants born at 28-34 weeks’ gestation during the period from Jan. 1, 2015, to Dec. 31, 2018. These infants were in the low-risk category of preterm birth because of preterm labor or premature rupture of membranes, with no IAI and adequate GBS intrapartum antibiotic prophylaxis, and no signs of cardiovascular or respiratory instability after birth. Of these, 157 (46.2%) received empiric antibiotics soon after birth and 183 infants (53.8%) did not receive empiric antibiotics.

The mean gestational age and birth weight were significantly lower in the empiric antibiotic group, but after correcting for these variables, the factors with the greatest influence on the initiation of antibiotics were maternal intrapartum antibiotic prophylaxis (odds ratio, 3.13); premature rupture of membranes (OR, 3.75); use of continuous positive airway pressure (CPAP) in the delivery room (OR, 1.84); CPAP on admission to the neonatal intensive care unit (OR, 1.94); drawing a blood culture (OR, 13.72); and a complete blood count with immature to total neutrophil ratio greater than 0.2 (OR, 3.84).

Three infants (2%) in the antibiotics group had culture-positive early-onset sepsis with Escherichia coli, compared with no infants in the no-antibiotics group. No differences in short-term hospital outcomes appeared between the two groups. The study was limited in part by the retrospective design and sample size, the researchers noted.

However, the results support a selective approach to antibiotics for preterm infants, taking various birth circumstances into account, they said.
 

Further risk factor identification could curb antibiotic use

In this study, empiric antibiotics were cast as a wide net to avoid missing serious infections in a few patients, said Tim Joos, MD, a Seattle-based clinician with a combination internal medicine/pediatrics practice, in an interview.

“It is interesting in this retrospective review of 340 preterm infants that the three newborns that did have serious bacterial infection were correctly given empiric antibiotics from the start,” Dr. Joos noted. “The authors were very effective at elucidating the possible factors that go into starting or not starting empiric antibiotics, although there may be other factors in the clinician’s judgment that are being missed. … More studies are needed on this topic,” Dr. Joos said. “Further research examining how the septic newborns differ from the nonseptic ones could help to even further narrow the use of empiric antibiotics,” he added.

The study received no outside funding. The researchers had no financial conflicts to disclose. Dr. Joos had no financial conflicts to disclose, but serves as a member of the Pediatric News Editorial Advisory Board.

Selective use of antibiotics based on birth circumstances may reduce unnecessary antibiotic exposure for preterm infants at risk of early-onset sepsis, based on data from 340 preterm infants at a single center.

Preterm infants born because of preterm labor, premature rupture of membranes, and/or intraamniotic infection (IAI) are considered at increased risk for early-onset sepsis, and current management strategies include a blood culture and initiation of empirical antibiotics, said Kirtan Patel, MD, of Texas A&M University, Dallas, and colleagues in a poster (# 1720) presented at the Pediatric Academic Societies annual meeting.

However, this blanket approach “may increase the unnecessary early antibiotic exposure in preterm infants possibly leading to future adverse health outcomes,” and physicians are advised to review the risks and benefits, Dr. Patel said.

Data from previous studies suggest that preterm infants born as a result of preterm labor and/or premature rupture of membranes with adequate Group B Streptococcus (GBS) intrapartum antibiotic prophylaxis and no indication of IAI may be managed without empiric antibiotics because the early-onset sepsis risk in these infants is much lower than the ones born through IAI and inadequate GBS intrapartum antibiotic prophylaxis.

To better identify preterm birth circumstances in which antibiotics might be avoided, the researchers conducted a retrospective cohort study of preterm infants born at 28-34 weeks’ gestation during the period from Jan. 1, 2015, to Dec. 31, 2018. These infants were in the low-risk category of preterm birth because of preterm labor or premature rupture of membranes, with no IAI and adequate GBS intrapartum antibiotic prophylaxis, and no signs of cardiovascular or respiratory instability after birth. Of these, 157 (46.2%) received empiric antibiotics soon after birth and 183 infants (53.8%) did not receive empiric antibiotics.

The mean gestational age and birth weight were significantly lower in the empiric antibiotic group, but after correcting for these variables, the factors with the greatest influence on the initiation of antibiotics were maternal intrapartum antibiotic prophylaxis (odds ratio, 3.13); premature rupture of membranes (OR, 3.75); use of continuous positive airway pressure (CPAP) in the delivery room (OR, 1.84); CPAP on admission to the neonatal intensive care unit (OR, 1.94); drawing a blood culture (OR, 13.72); and a complete blood count with immature to total neutrophil ratio greater than 0.2 (OR, 3.84).

Three infants (2%) in the antibiotics group had culture-positive early-onset sepsis with Escherichia coli, compared with no infants in the no-antibiotics group. No differences in short-term hospital outcomes appeared between the two groups. The study was limited in part by the retrospective design and sample size, the researchers noted.

However, the results support a selective approach to antibiotics for preterm infants, taking various birth circumstances into account, they said.
 

Further risk factor identification could curb antibiotic use

In this study, empiric antibiotics were cast as a wide net to avoid missing serious infections in a few patients, said Tim Joos, MD, a Seattle-based clinician with a combination internal medicine/pediatrics practice, in an interview.

“It is interesting in this retrospective review of 340 preterm infants that the three newborns that did have serious bacterial infection were correctly given empiric antibiotics from the start,” Dr. Joos noted. “The authors were very effective at elucidating the possible factors that go into starting or not starting empiric antibiotics, although there may be other factors in the clinician’s judgment that are being missed. … More studies are needed on this topic,” Dr. Joos said. “Further research examining how the septic newborns differ from the nonseptic ones could help to even further narrow the use of empiric antibiotics,” he added.

The study received no outside funding. The researchers had no financial conflicts to disclose. Dr. Joos had no financial conflicts to disclose, but serves as a member of the Pediatric News Editorial Advisory Board.

Vegetarians have more favorable levels of a number of biomarkers including cardiovascular-linked ones – total cholesterol, low-density lipoprotein cholesterol, and apolipoprotein A and B – than meat eaters, according to results of the largest study of its kind to date.

Results of the cross-sectional, observational study of 178,000 participants were presented as an electronic poster at this year’s online European Congress on Obesity by Jirapitcha Boonpor of the Institute of Cardiovascular & Medical Sciences, University of Glasgow (Scotland).

“We found that the health benefits of becoming a vegetarian were independent of adiposity and other sociodemographic and lifestyle-related confounding factors,” senior author Carlos Celis-Morales, PhD, also from the University of Glasgow, said in an interview.

Total cholesterol and LDL cholesterol concentrations for vegetarians were 21% and 16.4% lower than in meat eaters. But some biomarkers considered beneficial – including vitamin D concentrations – were lower in vegetarians, while some considered unhealthy – including triglycerides and cystatin-C levels – were higher.  

Vegetarian diets have recently become much more popular, but there is insufficient information about the health benefits. Prior reports of associations between biomarkers and a vegetarian diet were unclear, including evidence of any metabolic benefits, noted Dr. Celis-Morales.

Importantly, participants in the study had followed a vegetarian or meat-eater diet for at least 5 years before their biomarkers in blood and urine were assessed.

“If you modify your diet, then, 2 weeks later, you can see changes in some metabolic markers, but changes in markers of cardiovascular disease will take 5-10 years,” he explained.
 

No single biomarker can assess health

Asked to comment on the findings, John C. Mathers, PhD, noted that they clearly confirm the importance of not reading any biomarker result in isolation.

Health is complex and individual markers tell you just part of the story,” said Dr. Mathers of the Human Nutrition Research Centre, Newcastle (England) University.

He says a vegetarian diet can be nourishing but cautioned that “just because someone excludes meat from their diet does not mean necessarily that they will be eating a healthy diet.”

“Some of the biomarker differences seen in this work – such as the lower concentrations of total cholesterol and LDL cholesterol, GGT [gamma-glutamyl transferase], and ALT [alanine transaminase] – are indicators that the vegetarians were healthier than the meat eaters. However, other differences were less encouraging, including the lower concentrations of vitamin D and higher concentrations of triglycerides and cystatin-C.”

Also reflecting on the results, Jose Lara Gallegos, PhD, senior lecturer in human nutrition at Northumbria University, Newcastle upon Tyne, England, said they support previous evidence from large studies such as the European Prospective Investigation into Cancer and Nutrition (EPIC), which showed that a vegetarian diet is associated with a lower risk of heart disease.

“A vegetarian diet might also be associated with lower risk for liver diseases such as nonalcoholic fatty liver disease,” Dr. Gallegos said, but added that some levels of biomarkers considered to be “healthy” were lower in the vegetarians, and it is important to remember that strictly restricted diets might be associated with potential risks of nutritional inadequacies.

“Other, less restrictive dietary patterns, such as a Mediterranean diet, are also associated with ... health benefits,” he observed.
 

Large data sample from the UK Biobank study

“Specifically, we wanted to know if vegetarians were healthier because they are generally leaner and lead healthier lives, or whether their diet specifically was responsible for their improved metabolic and cardiovascular health,” Dr. Celis-Morales explained.

Data were included from 177,723 healthy participants from the UK Biobank study who were aged 37-73 years and had reported no major dietary changes over the last 5 years. In total, 4,111 participants were self-reported vegetarians who followed a diet without red meat, poultry, or fish, and 166,516 participants were meat eaters.

Nineteen biomarkers related to diabetes, hypertension, cardiovascular diseases, cancer, and liver and renal function were included, and the associations between vegetarian diet and biomarkers, compared with meat eaters, were examined.

To minimize confounding, the findings were adjusted for age, sex, deprivation, education, ethnicity, smoking, total sedentary time, type of physical activity, alcohol intake, body mass index, and waist circumference.

Compared with meat eaters, vegetarians had significantly lower concentrations of 14 biomarkers, including total cholesterol (21% lower); LDL (16% lower); lipoprotein A (1% lower), lipoprotein B (4% lower), and liver function markers (GGT: 354% lower, and ALT: 153% lower), IGF-1 (134% lower), urate (122% lower), total protein (29% lower), creatinine (607% lower), and C-reactive protein (10% lower).

However, the researchers found that, compared with meat eaters, vegetarians had significantly higher concentrations of some unhealthy biomarkers, including triglycerides (15% higher) and cystatin-C (4% higher), and lower levels of some beneficial biomarkers including high-density lipoprotein (HDL) cholesterol (5% lower), vitamin D (635% lower), and calcium (0.7% lower).

No associations were found for hemoglobin A1c, systolic blood pressure, and aminotransferase.

“Some biomarkers, for example urate, were very low in vegetarians, and this served to verify our results because we expected meat eaters to have higher levels of urate,” remarked Dr. Celis-Morales.
 

Diet commitment and cardiovascular outcomes

Many people, whether vegetarians or meat-eaters, follow short-term diets, for example, the Atkins or the 5:2 diet, and often lack continuity switching from one diet to the next, or back to regular eating.  

“They are healthy, but they do not commit for long enough to make a difference to metabolic markers or potentially long-term health. In contrast, vegetarians are usually fully committed but the reasons behind this commitment might be a concern for the environment or animal welfare, for example,” Dr. Celis-Morales pointed out.

However, he added that many vegetarians replace the meat in their diet with unhealthy alternatives. “They often eat too much pasta or potatoes, or other high-energy food with low nutritional value.”

Having identified metabolic markers specific to long-term vegetarian diets, Dr. Celis-Morales wanted to know what happens to vegetarians’ long-term cardiovascular health. He analyzed and published these outcomes in a separate study published in December 2020.

“Over 9 years of follow-up, we have found that vegetarians have a lower risk in terms of myocardial infarction in the long-term, as well as other cardiovascular disease,” he reported.

Asked whether there was an optimum age or time in life to become a vegetarian to improve health, Dr. Celis-Morales explained that the healthier you are, the less likely you will reap the health benefits of dietary changes – for example to being a vegetarian.

“It is more likely that those people who have unhealthy lifestyle risk factors, such as smoking, and high consumption of high-energy foods or processed meat are more likely to see positive health effects,” he said.  

Lifestyle changes to improve cardiovascular outcomes are usually more likely to be required at 40 or 50 years old than at younger ages. He also noted that metabolic markers tend to show clear improvement at around 3 months after adopting a particular diet but improvements in disease outcomes take a lot longer to become evident.

Dr. Celis-Morales and his team are currently conducting a further analysis to understand if the vegetarian diet is also associated with a lower risk of cancer, depression, and dementia, compared with meat-eaters.

Dr. Celis-Morales, Dr. Mathers, and Dr. Gallegos have reported no relevant financial relationships.

A version of this article first appeared on Medscape.com.

Vegetarians have more favorable levels of a number of biomarkers including cardiovascular-linked ones – total cholesterol, low-density lipoprotein cholesterol, and apolipoprotein A and B – than meat eaters, according to results of the largest study of its kind to date.

Results of the cross-sectional, observational study of 178,000 participants were presented as an electronic poster at this year’s online European Congress on Obesity by Jirapitcha Boonpor of the Institute of Cardiovascular & Medical Sciences, University of Glasgow (Scotland).

“We found that the health benefits of becoming a vegetarian were independent of adiposity and other sociodemographic and lifestyle-related confounding factors,” senior author Carlos Celis-Morales, PhD, also from the University of Glasgow, said in an interview.

Total cholesterol and LDL cholesterol concentrations for vegetarians were 21% and 16.4% lower than in meat eaters. But some biomarkers considered beneficial – including vitamin D concentrations – were lower in vegetarians, while some considered unhealthy – including triglycerides and cystatin-C levels – were higher.  

Vegetarian diets have recently become much more popular, but there is insufficient information about the health benefits. Prior reports of associations between biomarkers and a vegetarian diet were unclear, including evidence of any metabolic benefits, noted Dr. Celis-Morales.

Importantly, participants in the study had followed a vegetarian or meat-eater diet for at least 5 years before their biomarkers in blood and urine were assessed.

“If you modify your diet, then, 2 weeks later, you can see changes in some metabolic markers, but changes in markers of cardiovascular disease will take 5-10 years,” he explained.
 

No single biomarker can assess health

Asked to comment on the findings, John C. Mathers, PhD, noted that they clearly confirm the importance of not reading any biomarker result in isolation.

Health is complex and individual markers tell you just part of the story,” said Dr. Mathers of the Human Nutrition Research Centre, Newcastle (England) University.

He says a vegetarian diet can be nourishing but cautioned that “just because someone excludes meat from their diet does not mean necessarily that they will be eating a healthy diet.”

“Some of the biomarker differences seen in this work – such as the lower concentrations of total cholesterol and LDL cholesterol, GGT [gamma-glutamyl transferase], and ALT [alanine transaminase] – are indicators that the vegetarians were healthier than the meat eaters. However, other differences were less encouraging, including the lower concentrations of vitamin D and higher concentrations of triglycerides and cystatin-C.”

Also reflecting on the results, Jose Lara Gallegos, PhD, senior lecturer in human nutrition at Northumbria University, Newcastle upon Tyne, England, said they support previous evidence from large studies such as the European Prospective Investigation into Cancer and Nutrition (EPIC), which showed that a vegetarian diet is associated with a lower risk of heart disease.

“A vegetarian diet might also be associated with lower risk for liver diseases such as nonalcoholic fatty liver disease,” Dr. Gallegos said, but added that some levels of biomarkers considered to be “healthy” were lower in the vegetarians, and it is important to remember that strictly restricted diets might be associated with potential risks of nutritional inadequacies.

“Other, less restrictive dietary patterns, such as a Mediterranean diet, are also associated with ... health benefits,” he observed.
 

Large data sample from the UK Biobank study

“Specifically, we wanted to know if vegetarians were healthier because they are generally leaner and lead healthier lives, or whether their diet specifically was responsible for their improved metabolic and cardiovascular health,” Dr. Celis-Morales explained.

Data were included from 177,723 healthy participants from the UK Biobank study who were aged 37-73 years and had reported no major dietary changes over the last 5 years. In total, 4,111 participants were self-reported vegetarians who followed a diet without red meat, poultry, or fish, and 166,516 participants were meat eaters.

Nineteen biomarkers related to diabetes, hypertension, cardiovascular diseases, cancer, and liver and renal function were included, and the associations between vegetarian diet and biomarkers, compared with meat eaters, were examined.

To minimize confounding, the findings were adjusted for age, sex, deprivation, education, ethnicity, smoking, total sedentary time, type of physical activity, alcohol intake, body mass index, and waist circumference.

Compared with meat eaters, vegetarians had significantly lower concentrations of 14 biomarkers, including total cholesterol (21% lower); LDL (16% lower); lipoprotein A (1% lower), lipoprotein B (4% lower), and liver function markers (GGT: 354% lower, and ALT: 153% lower), IGF-1 (134% lower), urate (122% lower), total protein (29% lower), creatinine (607% lower), and C-reactive protein (10% lower).

However, the researchers found that, compared with meat eaters, vegetarians had significantly higher concentrations of some unhealthy biomarkers, including triglycerides (15% higher) and cystatin-C (4% higher), and lower levels of some beneficial biomarkers including high-density lipoprotein (HDL) cholesterol (5% lower), vitamin D (635% lower), and calcium (0.7% lower).

No associations were found for hemoglobin A1c, systolic blood pressure, and aminotransferase.

“Some biomarkers, for example urate, were very low in vegetarians, and this served to verify our results because we expected meat eaters to have higher levels of urate,” remarked Dr. Celis-Morales.
 

Diet commitment and cardiovascular outcomes

Many people, whether vegetarians or meat-eaters, follow short-term diets, for example, the Atkins or the 5:2 diet, and often lack continuity switching from one diet to the next, or back to regular eating.  

“They are healthy, but they do not commit for long enough to make a difference to metabolic markers or potentially long-term health. In contrast, vegetarians are usually fully committed but the reasons behind this commitment might be a concern for the environment or animal welfare, for example,” Dr. Celis-Morales pointed out.

However, he added that many vegetarians replace the meat in their diet with unhealthy alternatives. “They often eat too much pasta or potatoes, or other high-energy food with low nutritional value.”

Having identified metabolic markers specific to long-term vegetarian diets, Dr. Celis-Morales wanted to know what happens to vegetarians’ long-term cardiovascular health. He analyzed and published these outcomes in a separate study published in December 2020.

“Over 9 years of follow-up, we have found that vegetarians have a lower risk in terms of myocardial infarction in the long-term, as well as other cardiovascular disease,” he reported.

Asked whether there was an optimum age or time in life to become a vegetarian to improve health, Dr. Celis-Morales explained that the healthier you are, the less likely you will reap the health benefits of dietary changes – for example to being a vegetarian.

“It is more likely that those people who have unhealthy lifestyle risk factors, such as smoking, and high consumption of high-energy foods or processed meat are more likely to see positive health effects,” he said.  

Lifestyle changes to improve cardiovascular outcomes are usually more likely to be required at 40 or 50 years old than at younger ages. He also noted that metabolic markers tend to show clear improvement at around 3 months after adopting a particular diet but improvements in disease outcomes take a lot longer to become evident.

Dr. Celis-Morales and his team are currently conducting a further analysis to understand if the vegetarian diet is also associated with a lower risk of cancer, depression, and dementia, compared with meat-eaters.

Dr. Celis-Morales, Dr. Mathers, and Dr. Gallegos have reported no relevant financial relationships.

A version of this article first appeared on Medscape.com.

Vegetarians have more favorable levels of a number of biomarkers including cardiovascular-linked ones – total cholesterol, low-density lipoprotein cholesterol, and apolipoprotein A and B – than meat eaters, according to results of the largest study of its kind to date.

Results of the cross-sectional, observational study of 178,000 participants were presented as an electronic poster at this year’s online European Congress on Obesity by Jirapitcha Boonpor of the Institute of Cardiovascular & Medical Sciences, University of Glasgow (Scotland).

“We found that the health benefits of becoming a vegetarian were independent of adiposity and other sociodemographic and lifestyle-related confounding factors,” senior author Carlos Celis-Morales, PhD, also from the University of Glasgow, said in an interview.

Total cholesterol and LDL cholesterol concentrations for vegetarians were 21% and 16.4% lower than in meat eaters. But some biomarkers considered beneficial – including vitamin D concentrations – were lower in vegetarians, while some considered unhealthy – including triglycerides and cystatin-C levels – were higher.  

Vegetarian diets have recently become much more popular, but there is insufficient information about the health benefits. Prior reports of associations between biomarkers and a vegetarian diet were unclear, including evidence of any metabolic benefits, noted Dr. Celis-Morales.

Importantly, participants in the study had followed a vegetarian or meat-eater diet for at least 5 years before their biomarkers in blood and urine were assessed.

“If you modify your diet, then, 2 weeks later, you can see changes in some metabolic markers, but changes in markers of cardiovascular disease will take 5-10 years,” he explained.
 

No single biomarker can assess health

Asked to comment on the findings, John C. Mathers, PhD, noted that they clearly confirm the importance of not reading any biomarker result in isolation.

Health is complex and individual markers tell you just part of the story,” said Dr. Mathers of the Human Nutrition Research Centre, Newcastle (England) University.

He says a vegetarian diet can be nourishing but cautioned that “just because someone excludes meat from their diet does not mean necessarily that they will be eating a healthy diet.”

“Some of the biomarker differences seen in this work – such as the lower concentrations of total cholesterol and LDL cholesterol, GGT [gamma-glutamyl transferase], and ALT [alanine transaminase] – are indicators that the vegetarians were healthier than the meat eaters. However, other differences were less encouraging, including the lower concentrations of vitamin D and higher concentrations of triglycerides and cystatin-C.”

Also reflecting on the results, Jose Lara Gallegos, PhD, senior lecturer in human nutrition at Northumbria University, Newcastle upon Tyne, England, said they support previous evidence from large studies such as the European Prospective Investigation into Cancer and Nutrition (EPIC), which showed that a vegetarian diet is associated with a lower risk of heart disease.

“A vegetarian diet might also be associated with lower risk for liver diseases such as nonalcoholic fatty liver disease,” Dr. Gallegos said, but added that some levels of biomarkers considered to be “healthy” were lower in the vegetarians, and it is important to remember that strictly restricted diets might be associated with potential risks of nutritional inadequacies.

“Other, less restrictive dietary patterns, such as a Mediterranean diet, are also associated with ... health benefits,” he observed.
 

Large data sample from the UK Biobank study

“Specifically, we wanted to know if vegetarians were healthier because they are generally leaner and lead healthier lives, or whether their diet specifically was responsible for their improved metabolic and cardiovascular health,” Dr. Celis-Morales explained.

Data were included from 177,723 healthy participants from the UK Biobank study who were aged 37-73 years and had reported no major dietary changes over the last 5 years. In total, 4,111 participants were self-reported vegetarians who followed a diet without red meat, poultry, or fish, and 166,516 participants were meat eaters.

Nineteen biomarkers related to diabetes, hypertension, cardiovascular diseases, cancer, and liver and renal function were included, and the associations between vegetarian diet and biomarkers, compared with meat eaters, were examined.

To minimize confounding, the findings were adjusted for age, sex, deprivation, education, ethnicity, smoking, total sedentary time, type of physical activity, alcohol intake, body mass index, and waist circumference.

Compared with meat eaters, vegetarians had significantly lower concentrations of 14 biomarkers, including total cholesterol (21% lower); LDL (16% lower); lipoprotein A (1% lower), lipoprotein B (4% lower), and liver function markers (GGT: 354% lower, and ALT: 153% lower), IGF-1 (134% lower), urate (122% lower), total protein (29% lower), creatinine (607% lower), and C-reactive protein (10% lower).

However, the researchers found that, compared with meat eaters, vegetarians had significantly higher concentrations of some unhealthy biomarkers, including triglycerides (15% higher) and cystatin-C (4% higher), and lower levels of some beneficial biomarkers including high-density lipoprotein (HDL) cholesterol (5% lower), vitamin D (635% lower), and calcium (0.7% lower).

No associations were found for hemoglobin A1c, systolic blood pressure, and aminotransferase.

“Some biomarkers, for example urate, were very low in vegetarians, and this served to verify our results because we expected meat eaters to have higher levels of urate,” remarked Dr. Celis-Morales.
 

Diet commitment and cardiovascular outcomes

Many people, whether vegetarians or meat-eaters, follow short-term diets, for example, the Atkins or the 5:2 diet, and often lack continuity switching from one diet to the next, or back to regular eating.  

“They are healthy, but they do not commit for long enough to make a difference to metabolic markers or potentially long-term health. In contrast, vegetarians are usually fully committed but the reasons behind this commitment might be a concern for the environment or animal welfare, for example,” Dr. Celis-Morales pointed out.

However, he added that many vegetarians replace the meat in their diet with unhealthy alternatives. “They often eat too much pasta or potatoes, or other high-energy food with low nutritional value.”

Having identified metabolic markers specific to long-term vegetarian diets, Dr. Celis-Morales wanted to know what happens to vegetarians’ long-term cardiovascular health. He analyzed and published these outcomes in a separate study published in December 2020.

“Over 9 years of follow-up, we have found that vegetarians have a lower risk in terms of myocardial infarction in the long-term, as well as other cardiovascular disease,” he reported.

Asked whether there was an optimum age or time in life to become a vegetarian to improve health, Dr. Celis-Morales explained that the healthier you are, the less likely you will reap the health benefits of dietary changes – for example to being a vegetarian.

“It is more likely that those people who have unhealthy lifestyle risk factors, such as smoking, and high consumption of high-energy foods or processed meat are more likely to see positive health effects,” he said.  

Lifestyle changes to improve cardiovascular outcomes are usually more likely to be required at 40 or 50 years old than at younger ages. He also noted that metabolic markers tend to show clear improvement at around 3 months after adopting a particular diet but improvements in disease outcomes take a lot longer to become evident.

Dr. Celis-Morales and his team are currently conducting a further analysis to understand if the vegetarian diet is also associated with a lower risk of cancer, depression, and dementia, compared with meat-eaters.

Dr. Celis-Morales, Dr. Mathers, and Dr. Gallegos have reported no relevant financial relationships.

A version of this article first appeared on Medscape.com.