Cardiology

From the University of Missouri School of Medicine, Columbia, MO (Haley Crosby); Department of Clinical Family and Community Medicine, University of Missouri, Columbia, MO (Dr. Pierce); and Department of Medicine, Divisions of Infectious Diseases and Pulmonary, Critical Care and Environmental Medicine, University of Missouri, Columbia, MO, and Divisions of Pulmonary and Critical Care Medicine and Infectious Diseases, University of Maryland Baltimore Washington Medical Center, Glen Burnie, MD (Dr. Regunath).

ABSTRACT

Objective: Multidisciplinary teams (MDTs) improve outcomes for patients with infective endocarditis (IE), but methods of implementation vary. In our academic medical center, we developed an MDT approach guided by a clinical care pathway and assessed outcomes of patients with IE.

Methods: We compared outcomes of patients with IE and indications for surgery between December 2018 and June 2020 with our prior published data for the period January to December 2016. MDT interventions involved recurring conferences with infectious diseases physicians in team meetings and promoting a clinical care pathway to guide providers on steps in management. Primary outcomes were surgery and in-hospital death.

Results: Prior to the intervention, 6 of 21 (28.6%) patients with indications for surgery underwent surgery or were transferred to higher centers for surgery, and 6 (28.6%) patients died. Post intervention, 17 of 31 (54.8%) patients underwent or were transferred for surgery, and 5 (16.1%) died. After adjusting for age and gender, the odds of surgery or transfer for surgery for patients in the postintervention period were 4.88 (95% CI, 1.20-19.79; P = .027) compared with the pre-intervention period. The odds ratio for death among patients in the postintervention period was 0.40 (95% CI, 0.09-1.69; P = .21).

Conclusion: An MDT team approach using a clinical pathway was associated with an increased number of surgeries performed for IE and may lower rates of in-hospital mortality.

Keywords: infective endocarditis, clinical pathway, quality improvement, multidisciplinary team, valve surgery.

Infective endocarditis (IE) is associated with significant morbidity and mortality.¹ Rates of IE due to Staphylococcus aureus are increasing in the United States.² Reported in-hospital mortality from IE ranges from 15% to 20%.³ Optimal management of IE requires input from a number of specialties, including infectious diseases (ID), cardiology, cardiothoracic surgery (CTS), oromaxillofacial surgery, radiology (eg, nuclear medicine), and neurology, among others, depending on the site of complications. Guidelines from the United States and Europe recommend incorporating multidisciplinary teams (MDTs) in the management of IE.^1,3-5 These recommendations are based on quasi-experimental before-and-after studies that have consistently demonstrated that MDTs reduce in-hospital and 1-year mortality.^6-11 However, implementation of MDTs can be challenging. Successful MDTs require good team dynamics, unified participation, and seamless communication among team members.

Clinical pathways are defined as “structured, multidisciplinary plans of care used by health services to detail essential steps in the care of patients with a specific clinical problem.”¹² In the modern era, these pathways are often developed and implemented via the electronic health record (EHR) system. Studies of clinical pathways generally demonstrate improvements in patient outcomes, quality of care, or resource utilization.^13,14 Clinical pathways represent 1 possible approach to the implementation of a MDT in the care of patients with IE.¹⁵

In our earlier work, we used quality improvement principles in the design of an MDT approach to IE care at our institution.¹⁶ Despite having indications for surgery, 12 of 21 (57.1%) patients with IE did not undergo surgery, and we identified these missed opportunities for surgery as a leverage point for improvement of outcomes. With input from the various specialties and stakeholders, we developed a clinical pathway (algorithm) for the institutional management of IE that guides next steps in clinical care and their timelines, aiming to reduce by 50% (from 57.1% to 28.6%) the number of patients with IE who do not undergo surgery despite guideline indications for early surgical intervention. In this report, we describe the implementation of this clinical pathway as our MDT approach to the care of patients with IE at our institution.

Methods

The University of Missouri, Columbia, is a tertiary care academic health system with 5 hospitals and more than 60 clinic locations across central Missouri. In the spring of 2018, an MDT was developed, with support from administrative leaders, to improve the care of patients with IE at our institution. The work group prioritized one leverage point to improve IE outcomes, which was improving the number of surgeries performed on those IE patients who had guideline indications for surgery. A clinical pathway was developed around this leverage point (Figure 1). The pathway leveraged the 6 T’s (Table 1) to guide providers through the evaluation and management of IE.¹⁷ The pathway focused on improving adherence to standards of care and reduction in practice variation by defining indications for referrals and diagnostic interventions, helping to reduce delays in consultation and diagnosis. The pathway also clearly outlined the surgical indications and timing for patients with IE and provided the basis for decisions to proceed with surgery.

Starting in late 2018, in collaboration with cardiology and CTS teams, ID specialists socialized the clinical pathway to inpatient services that cared for patients with IE. Infectious diseases physicians also provided recurring conferences on the effectiveness of MDTs in IE management and participated in heart-valve team case discussions. Finally, in May 2019, an electronic version of the pathway was embedded in the EHR system using a Cerner PowerChart feature known as Care Pathways. The feature presents the user with algorithm questions in the EHR and provides recommendations, relevant orders, timelines, and other decision support in the clinical pathway. The feature is available to all providers in the health system.

To evaluate the effectiveness of our intervention, we recorded outcomes for patients with IE with surgical indications between December 2018 and June 2020 and compared them with our prior published data from January to December 2016. Cases of IE for the current study period were identified via retrospective chart review. Records from December 2018 to June 2020 were searched using International Statistical Classification of Diseases, Tenth Revision (ICD-10) discharge codes for IE (I33, I33.0, I33.9, I38, I39, M32.11). To select those patients with definitive IE and indications for surgery, the following criteria were applied: age ≥ 18 years; fulfilled modified Duke criteria for definite IE¹⁸; and met ≥ 1 American Heart Association (AHA)/Infection Diseases Society of America criteria for recommendation for surgery. Indications for surgery were ≥ 1 of the following: left-sided endocarditis caused by S aureus, fungal, or highly resistant organism; new heart block; annular or aortic abscess; persistent bacteremia or fever despite 5 days of appropriate antimicrobials; vegetation size ≥ 10 mm and evidence of embolic phenomena; recurrence of prosthetic valve infection; recurrent emboli and persistent vegetation despite antimicrobials; and increase in vegetation size despite antimicrobials.¹⁶

Age was treated as a categorical variable, using the age groups 18 to 44 years, 45 to 64 years, and 65 years and older. Gender was self-reported. Primary outcomes were surgery or transfer to a higher center for surgery and in-hospital death. Secondary outcomes included consults to teams involved in multidisciplinary care of patients with IE, including ID, cardiology, and CTS. Bivariate analyses were performed using Pearson χ² tests. Odds ratios for surgery and death were calculated using a multivariate logistic regression model including age and gender covariates. Statistical significance was defined at α = 0.05, and statistical analysis was performed using Stata/IC v16.1 (StataCorp LLC). Our university institutional review board (IRB) reviewed the project (#2010858-QI) and determined that the project was quality-improvement activity, not human subject research, and therefore did not require additional IRB review.

Results

We identified 21 patients in the pre-intervention period and 31 patients in the postintervention period with definitive IE who had guideline indications for surgery. The postintervention cohort was older and had more male patients; this difference was not statistically significant. No differences were noted between the groups for race, gender, or intravenous (IV) drug use (Table 2). Chi-square tests of independence were performed to assess the relationship between age and our primary outcomes. There was a significant relationship between age and the likelihood of receiving or being transferred for surgery (59.3% vs 50% vs 7.7% for 18-44 y, 45-64 y, and ≥ 65 y, respectively; χ² [2, N = 52] = 9.67; P = .008), but not between age and mortality (14.8% vs 25.0% vs 30.8% for 18-44 y, 45-64 y, and ≥ 65 y, respectively; χ²  = 1.48 [2, N = 52; P = .478]. The electronic version of the clinical pathway was activated and used in only 3 of the 31 patients in the postintervention period. Consultations to ID, cardiology, and CTS teams were compared between the study periods (Table 2). Although more consultations were seen in the postintervention period, differences were not statistically significant.

The unadjusted primary outcomes are shown in Table 2. More surgeries were performed per guideline indications, and fewer deaths were noted in the postintervention period than in the pre-intervention period, but the differences were not statistically significant (Table 2).

Because the postintervention period had more male patients and older patients, we evaluated the outcomes using a logistic regression model controlling for both age and gender. The odds of surgery or transfer for surgery for patients in the postintervention period were 4.88 (95% CI, 1.20-19.79; P = .027) as compared with the pre-intervention period, and the odds ratio for death among patients in the postintervention period compared with the pre-intervention period was 0.40 (95% CI, 0.09-1.69; P = .21) (Figure 2).

Discussion

In our study, patients with IE with guideline indications for surgery had significantly higher rates of surgery in the postintervention period than in the pre-intervention period. The implementation of an MDT, recurring educational sessions, and efforts to implement and familiarize team members with the clinical pathway approach are the most likely reasons for this change. The increased rates of surgery in the postintervention period were the likely proximate cause of the 60% reduction in in-hospital mortality. This improvement in mortality, while not statistically significant, is very likely to be clinically significant and helps reinforce the value of the MDT intervention used.

Our findings are consistent with existing and mounting literature on the use of MDTs to improve outcomes for patients with IE, including 2 studies that noted an increased rate of surgery for patients with indications.^8,19 Several other studies in both Europe and North America have found significant decreases in mortality,^6-11,20,21 rates of complications,⁹ time to diagnosis and treatment,¹¹ and length of stay^9,20 for patients with IE managed with an MDT strategy. Although current AHA guidelines for care of patients with IE do suggest an MDT approach, the strategy for this approach is not well established.²² Only 1 study that has implemented a new MDT protocol for care of IE has been conducted in the United States.⁸

While effective MDTs certainly improve outcomes in patients with IE, there are reported differences in implementation of such an approach. With the MDT model as the core, various implementations included regular case conferences,^{10,11,19,21,23} formation of a consulting team,^6,8 or establishment of a new protocol or algorithm for care.^8,9,20 Our approach used a clinical pathway as a basis for improved communication among consulting services, education of learning providers via regular case conferences, and implementation of an electronic clinical care pathway to guide them step by step. Our pathway followed the institutionally standardized algorithm (Figure 1), using what we called the 6 T’s approach (Table 1), that guides providers to evaluate critical cases in a fast track.¹⁷

To the best of our knowledge, ours is the first report of an MDT that used an electronic clinical care pathway embedded within the EHR. The electronic version of our clinical pathway went live for only the second half of the postintervention study period, which is the most likely reason for its limited utilization. It is also possible that educational efforts in the first half of the intervention period were sufficient to familiarize providers with the care pathway such that the electronic version was seldom needed. We are exploring other possible ways of improving electronic pathway utilization, such as improving the feature usability and further systemwide educational efforts.

Our study has other limitations. Quasi-experimental before-and-after comparisons are subject to confounding from concurrent interventions. We had a substantial change in cardiothoracic faculty soon after the commencement of our efforts to form the MDT, and thus cannot rule out differences related to their comfort level in considering or offering surgery. We also cannot rule out a Hawthorne effect, where knowledge of the ongoing quality-improvement project changed provider behavior, making surgery more likely. We did not evaluate rates of right- versus left-sided endocarditis, which have been linked to mortality.²⁴ Our study also was performed across a single academic institution, which may limit its generalizability. Finally, our study may not have been adequately powered to detect differences in mortality due to implementation of the MDT approach.

Conclusion

Our work suggests that an MDT for IE can be successfully designed and implemented with a clinical pathway using quality-improvement tools in centers where subspecialty services are available. Our approach was associated with a higher rate of surgery among patients with guideline indications for surgery and may reduce in-hospital mortality. An electronic clinical care pathway embedded in the EHR is feasible and may have a role in MDT implementation.

These data were also accepted as a poster at IDWeek 2022, Washington, DC. The poster abstract is published in an online supplement of Open Forum Infectious Diseases as an abstract publication.

Corresponding author: Haley Crosby; hwc2pd@health.missouri.edu

Disclosures: None reported.

From the University of Missouri School of Medicine, Columbia, MO (Haley Crosby); Department of Clinical Family and Community Medicine, University of Missouri, Columbia, MO (Dr. Pierce); and Department of Medicine, Divisions of Infectious Diseases and Pulmonary, Critical Care and Environmental Medicine, University of Missouri, Columbia, MO, and Divisions of Pulmonary and Critical Care Medicine and Infectious Diseases, University of Maryland Baltimore Washington Medical Center, Glen Burnie, MD (Dr. Regunath).

ABSTRACT

Objective: Multidisciplinary teams (MDTs) improve outcomes for patients with infective endocarditis (IE), but methods of implementation vary. In our academic medical center, we developed an MDT approach guided by a clinical care pathway and assessed outcomes of patients with IE.

Methods: We compared outcomes of patients with IE and indications for surgery between December 2018 and June 2020 with our prior published data for the period January to December 2016. MDT interventions involved recurring conferences with infectious diseases physicians in team meetings and promoting a clinical care pathway to guide providers on steps in management. Primary outcomes were surgery and in-hospital death.

Results: Prior to the intervention, 6 of 21 (28.6%) patients with indications for surgery underwent surgery or were transferred to higher centers for surgery, and 6 (28.6%) patients died. Post intervention, 17 of 31 (54.8%) patients underwent or were transferred for surgery, and 5 (16.1%) died. After adjusting for age and gender, the odds of surgery or transfer for surgery for patients in the postintervention period were 4.88 (95% CI, 1.20-19.79; P = .027) compared with the pre-intervention period. The odds ratio for death among patients in the postintervention period was 0.40 (95% CI, 0.09-1.69; P = .21).

Conclusion: An MDT team approach using a clinical pathway was associated with an increased number of surgeries performed for IE and may lower rates of in-hospital mortality.

Keywords: infective endocarditis, clinical pathway, quality improvement, multidisciplinary team, valve surgery.

Infective endocarditis (IE) is associated with significant morbidity and mortality.¹ Rates of IE due to Staphylococcus aureus are increasing in the United States.² Reported in-hospital mortality from IE ranges from 15% to 20%.³ Optimal management of IE requires input from a number of specialties, including infectious diseases (ID), cardiology, cardiothoracic surgery (CTS), oromaxillofacial surgery, radiology (eg, nuclear medicine), and neurology, among others, depending on the site of complications. Guidelines from the United States and Europe recommend incorporating multidisciplinary teams (MDTs) in the management of IE.^1,3-5 These recommendations are based on quasi-experimental before-and-after studies that have consistently demonstrated that MDTs reduce in-hospital and 1-year mortality.^6-11 However, implementation of MDTs can be challenging. Successful MDTs require good team dynamics, unified participation, and seamless communication among team members.

Clinical pathways are defined as “structured, multidisciplinary plans of care used by health services to detail essential steps in the care of patients with a specific clinical problem.”¹² In the modern era, these pathways are often developed and implemented via the electronic health record (EHR) system. Studies of clinical pathways generally demonstrate improvements in patient outcomes, quality of care, or resource utilization.^13,14 Clinical pathways represent 1 possible approach to the implementation of a MDT in the care of patients with IE.¹⁵

In our earlier work, we used quality improvement principles in the design of an MDT approach to IE care at our institution.¹⁶ Despite having indications for surgery, 12 of 21 (57.1%) patients with IE did not undergo surgery, and we identified these missed opportunities for surgery as a leverage point for improvement of outcomes. With input from the various specialties and stakeholders, we developed a clinical pathway (algorithm) for the institutional management of IE that guides next steps in clinical care and their timelines, aiming to reduce by 50% (from 57.1% to 28.6%) the number of patients with IE who do not undergo surgery despite guideline indications for early surgical intervention. In this report, we describe the implementation of this clinical pathway as our MDT approach to the care of patients with IE at our institution.

Methods

The University of Missouri, Columbia, is a tertiary care academic health system with 5 hospitals and more than 60 clinic locations across central Missouri. In the spring of 2018, an MDT was developed, with support from administrative leaders, to improve the care of patients with IE at our institution. The work group prioritized one leverage point to improve IE outcomes, which was improving the number of surgeries performed on those IE patients who had guideline indications for surgery. A clinical pathway was developed around this leverage point (Figure 1). The pathway leveraged the 6 T’s (Table 1) to guide providers through the evaluation and management of IE.¹⁷ The pathway focused on improving adherence to standards of care and reduction in practice variation by defining indications for referrals and diagnostic interventions, helping to reduce delays in consultation and diagnosis. The pathway also clearly outlined the surgical indications and timing for patients with IE and provided the basis for decisions to proceed with surgery.

Starting in late 2018, in collaboration with cardiology and CTS teams, ID specialists socialized the clinical pathway to inpatient services that cared for patients with IE. Infectious diseases physicians also provided recurring conferences on the effectiveness of MDTs in IE management and participated in heart-valve team case discussions. Finally, in May 2019, an electronic version of the pathway was embedded in the EHR system using a Cerner PowerChart feature known as Care Pathways. The feature presents the user with algorithm questions in the EHR and provides recommendations, relevant orders, timelines, and other decision support in the clinical pathway. The feature is available to all providers in the health system.

To evaluate the effectiveness of our intervention, we recorded outcomes for patients with IE with surgical indications between December 2018 and June 2020 and compared them with our prior published data from January to December 2016. Cases of IE for the current study period were identified via retrospective chart review. Records from December 2018 to June 2020 were searched using International Statistical Classification of Diseases, Tenth Revision (ICD-10) discharge codes for IE (I33, I33.0, I33.9, I38, I39, M32.11). To select those patients with definitive IE and indications for surgery, the following criteria were applied: age ≥ 18 years; fulfilled modified Duke criteria for definite IE¹⁸; and met ≥ 1 American Heart Association (AHA)/Infection Diseases Society of America criteria for recommendation for surgery. Indications for surgery were ≥ 1 of the following: left-sided endocarditis caused by S aureus, fungal, or highly resistant organism; new heart block; annular or aortic abscess; persistent bacteremia or fever despite 5 days of appropriate antimicrobials; vegetation size ≥ 10 mm and evidence of embolic phenomena; recurrence of prosthetic valve infection; recurrent emboli and persistent vegetation despite antimicrobials; and increase in vegetation size despite antimicrobials.¹⁶

Age was treated as a categorical variable, using the age groups 18 to 44 years, 45 to 64 years, and 65 years and older. Gender was self-reported. Primary outcomes were surgery or transfer to a higher center for surgery and in-hospital death. Secondary outcomes included consults to teams involved in multidisciplinary care of patients with IE, including ID, cardiology, and CTS. Bivariate analyses were performed using Pearson χ² tests. Odds ratios for surgery and death were calculated using a multivariate logistic regression model including age and gender covariates. Statistical significance was defined at α = 0.05, and statistical analysis was performed using Stata/IC v16.1 (StataCorp LLC). Our university institutional review board (IRB) reviewed the project (#2010858-QI) and determined that the project was quality-improvement activity, not human subject research, and therefore did not require additional IRB review.

Results

We identified 21 patients in the pre-intervention period and 31 patients in the postintervention period with definitive IE who had guideline indications for surgery. The postintervention cohort was older and had more male patients; this difference was not statistically significant. No differences were noted between the groups for race, gender, or intravenous (IV) drug use (Table 2). Chi-square tests of independence were performed to assess the relationship between age and our primary outcomes. There was a significant relationship between age and the likelihood of receiving or being transferred for surgery (59.3% vs 50% vs 7.7% for 18-44 y, 45-64 y, and ≥ 65 y, respectively; χ² [2, N = 52] = 9.67; P = .008), but not between age and mortality (14.8% vs 25.0% vs 30.8% for 18-44 y, 45-64 y, and ≥ 65 y, respectively; χ²  = 1.48 [2, N = 52; P = .478]. The electronic version of the clinical pathway was activated and used in only 3 of the 31 patients in the postintervention period. Consultations to ID, cardiology, and CTS teams were compared between the study periods (Table 2). Although more consultations were seen in the postintervention period, differences were not statistically significant.

The unadjusted primary outcomes are shown in Table 2. More surgeries were performed per guideline indications, and fewer deaths were noted in the postintervention period than in the pre-intervention period, but the differences were not statistically significant (Table 2).

Because the postintervention period had more male patients and older patients, we evaluated the outcomes using a logistic regression model controlling for both age and gender. The odds of surgery or transfer for surgery for patients in the postintervention period were 4.88 (95% CI, 1.20-19.79; P = .027) as compared with the pre-intervention period, and the odds ratio for death among patients in the postintervention period compared with the pre-intervention period was 0.40 (95% CI, 0.09-1.69; P = .21) (Figure 2).

Discussion

In our study, patients with IE with guideline indications for surgery had significantly higher rates of surgery in the postintervention period than in the pre-intervention period. The implementation of an MDT, recurring educational sessions, and efforts to implement and familiarize team members with the clinical pathway approach are the most likely reasons for this change. The increased rates of surgery in the postintervention period were the likely proximate cause of the 60% reduction in in-hospital mortality. This improvement in mortality, while not statistically significant, is very likely to be clinically significant and helps reinforce the value of the MDT intervention used.

Our findings are consistent with existing and mounting literature on the use of MDTs to improve outcomes for patients with IE, including 2 studies that noted an increased rate of surgery for patients with indications.^8,19 Several other studies in both Europe and North America have found significant decreases in mortality,^6-11,20,21 rates of complications,⁹ time to diagnosis and treatment,¹¹ and length of stay^9,20 for patients with IE managed with an MDT strategy. Although current AHA guidelines for care of patients with IE do suggest an MDT approach, the strategy for this approach is not well established.²² Only 1 study that has implemented a new MDT protocol for care of IE has been conducted in the United States.⁸

While effective MDTs certainly improve outcomes in patients with IE, there are reported differences in implementation of such an approach. With the MDT model as the core, various implementations included regular case conferences,^{10,11,19,21,23} formation of a consulting team,^6,8 or establishment of a new protocol or algorithm for care.^8,9,20 Our approach used a clinical pathway as a basis for improved communication among consulting services, education of learning providers via regular case conferences, and implementation of an electronic clinical care pathway to guide them step by step. Our pathway followed the institutionally standardized algorithm (Figure 1), using what we called the 6 T’s approach (Table 1), that guides providers to evaluate critical cases in a fast track.¹⁷

To the best of our knowledge, ours is the first report of an MDT that used an electronic clinical care pathway embedded within the EHR. The electronic version of our clinical pathway went live for only the second half of the postintervention study period, which is the most likely reason for its limited utilization. It is also possible that educational efforts in the first half of the intervention period were sufficient to familiarize providers with the care pathway such that the electronic version was seldom needed. We are exploring other possible ways of improving electronic pathway utilization, such as improving the feature usability and further systemwide educational efforts.

Our study has other limitations. Quasi-experimental before-and-after comparisons are subject to confounding from concurrent interventions. We had a substantial change in cardiothoracic faculty soon after the commencement of our efforts to form the MDT, and thus cannot rule out differences related to their comfort level in considering or offering surgery. We also cannot rule out a Hawthorne effect, where knowledge of the ongoing quality-improvement project changed provider behavior, making surgery more likely. We did not evaluate rates of right- versus left-sided endocarditis, which have been linked to mortality.²⁴ Our study also was performed across a single academic institution, which may limit its generalizability. Finally, our study may not have been adequately powered to detect differences in mortality due to implementation of the MDT approach.

Conclusion

Our work suggests that an MDT for IE can be successfully designed and implemented with a clinical pathway using quality-improvement tools in centers where subspecialty services are available. Our approach was associated with a higher rate of surgery among patients with guideline indications for surgery and may reduce in-hospital mortality. An electronic clinical care pathway embedded in the EHR is feasible and may have a role in MDT implementation.

These data were also accepted as a poster at IDWeek 2022, Washington, DC. The poster abstract is published in an online supplement of Open Forum Infectious Diseases as an abstract publication.

Corresponding author: Haley Crosby; hwc2pd@health.missouri.edu

Disclosures: None reported.

From the University of Missouri School of Medicine, Columbia, MO (Haley Crosby); Department of Clinical Family and Community Medicine, University of Missouri, Columbia, MO (Dr. Pierce); and Department of Medicine, Divisions of Infectious Diseases and Pulmonary, Critical Care and Environmental Medicine, University of Missouri, Columbia, MO, and Divisions of Pulmonary and Critical Care Medicine and Infectious Diseases, University of Maryland Baltimore Washington Medical Center, Glen Burnie, MD (Dr. Regunath).

ABSTRACT

Objective: Multidisciplinary teams (MDTs) improve outcomes for patients with infective endocarditis (IE), but methods of implementation vary. In our academic medical center, we developed an MDT approach guided by a clinical care pathway and assessed outcomes of patients with IE.

Methods: We compared outcomes of patients with IE and indications for surgery between December 2018 and June 2020 with our prior published data for the period January to December 2016. MDT interventions involved recurring conferences with infectious diseases physicians in team meetings and promoting a clinical care pathway to guide providers on steps in management. Primary outcomes were surgery and in-hospital death.

Results: Prior to the intervention, 6 of 21 (28.6%) patients with indications for surgery underwent surgery or were transferred to higher centers for surgery, and 6 (28.6%) patients died. Post intervention, 17 of 31 (54.8%) patients underwent or were transferred for surgery, and 5 (16.1%) died. After adjusting for age and gender, the odds of surgery or transfer for surgery for patients in the postintervention period were 4.88 (95% CI, 1.20-19.79; P = .027) compared with the pre-intervention period. The odds ratio for death among patients in the postintervention period was 0.40 (95% CI, 0.09-1.69; P = .21).

Conclusion: An MDT team approach using a clinical pathway was associated with an increased number of surgeries performed for IE and may lower rates of in-hospital mortality.

Keywords: infective endocarditis, clinical pathway, quality improvement, multidisciplinary team, valve surgery.

Infective endocarditis (IE) is associated with significant morbidity and mortality.¹ Rates of IE due to Staphylococcus aureus are increasing in the United States.² Reported in-hospital mortality from IE ranges from 15% to 20%.³ Optimal management of IE requires input from a number of specialties, including infectious diseases (ID), cardiology, cardiothoracic surgery (CTS), oromaxillofacial surgery, radiology (eg, nuclear medicine), and neurology, among others, depending on the site of complications. Guidelines from the United States and Europe recommend incorporating multidisciplinary teams (MDTs) in the management of IE.^1,3-5 These recommendations are based on quasi-experimental before-and-after studies that have consistently demonstrated that MDTs reduce in-hospital and 1-year mortality.^6-11 However, implementation of MDTs can be challenging. Successful MDTs require good team dynamics, unified participation, and seamless communication among team members.

Clinical pathways are defined as “structured, multidisciplinary plans of care used by health services to detail essential steps in the care of patients with a specific clinical problem.”¹² In the modern era, these pathways are often developed and implemented via the electronic health record (EHR) system. Studies of clinical pathways generally demonstrate improvements in patient outcomes, quality of care, or resource utilization.^13,14 Clinical pathways represent 1 possible approach to the implementation of a MDT in the care of patients with IE.¹⁵

In our earlier work, we used quality improvement principles in the design of an MDT approach to IE care at our institution.¹⁶ Despite having indications for surgery, 12 of 21 (57.1%) patients with IE did not undergo surgery, and we identified these missed opportunities for surgery as a leverage point for improvement of outcomes. With input from the various specialties and stakeholders, we developed a clinical pathway (algorithm) for the institutional management of IE that guides next steps in clinical care and their timelines, aiming to reduce by 50% (from 57.1% to 28.6%) the number of patients with IE who do not undergo surgery despite guideline indications for early surgical intervention. In this report, we describe the implementation of this clinical pathway as our MDT approach to the care of patients with IE at our institution.

Methods

The University of Missouri, Columbia, is a tertiary care academic health system with 5 hospitals and more than 60 clinic locations across central Missouri. In the spring of 2018, an MDT was developed, with support from administrative leaders, to improve the care of patients with IE at our institution. The work group prioritized one leverage point to improve IE outcomes, which was improving the number of surgeries performed on those IE patients who had guideline indications for surgery. A clinical pathway was developed around this leverage point (Figure 1). The pathway leveraged the 6 T’s (Table 1) to guide providers through the evaluation and management of IE.¹⁷ The pathway focused on improving adherence to standards of care and reduction in practice variation by defining indications for referrals and diagnostic interventions, helping to reduce delays in consultation and diagnosis. The pathway also clearly outlined the surgical indications and timing for patients with IE and provided the basis for decisions to proceed with surgery.

Starting in late 2018, in collaboration with cardiology and CTS teams, ID specialists socialized the clinical pathway to inpatient services that cared for patients with IE. Infectious diseases physicians also provided recurring conferences on the effectiveness of MDTs in IE management and participated in heart-valve team case discussions. Finally, in May 2019, an electronic version of the pathway was embedded in the EHR system using a Cerner PowerChart feature known as Care Pathways. The feature presents the user with algorithm questions in the EHR and provides recommendations, relevant orders, timelines, and other decision support in the clinical pathway. The feature is available to all providers in the health system.

To evaluate the effectiveness of our intervention, we recorded outcomes for patients with IE with surgical indications between December 2018 and June 2020 and compared them with our prior published data from January to December 2016. Cases of IE for the current study period were identified via retrospective chart review. Records from December 2018 to June 2020 were searched using International Statistical Classification of Diseases, Tenth Revision (ICD-10) discharge codes for IE (I33, I33.0, I33.9, I38, I39, M32.11). To select those patients with definitive IE and indications for surgery, the following criteria were applied: age ≥ 18 years; fulfilled modified Duke criteria for definite IE¹⁸; and met ≥ 1 American Heart Association (AHA)/Infection Diseases Society of America criteria for recommendation for surgery. Indications for surgery were ≥ 1 of the following: left-sided endocarditis caused by S aureus, fungal, or highly resistant organism; new heart block; annular or aortic abscess; persistent bacteremia or fever despite 5 days of appropriate antimicrobials; vegetation size ≥ 10 mm and evidence of embolic phenomena; recurrence of prosthetic valve infection; recurrent emboli and persistent vegetation despite antimicrobials; and increase in vegetation size despite antimicrobials.¹⁶

Age was treated as a categorical variable, using the age groups 18 to 44 years, 45 to 64 years, and 65 years and older. Gender was self-reported. Primary outcomes were surgery or transfer to a higher center for surgery and in-hospital death. Secondary outcomes included consults to teams involved in multidisciplinary care of patients with IE, including ID, cardiology, and CTS. Bivariate analyses were performed using Pearson χ² tests. Odds ratios for surgery and death were calculated using a multivariate logistic regression model including age and gender covariates. Statistical significance was defined at α = 0.05, and statistical analysis was performed using Stata/IC v16.1 (StataCorp LLC). Our university institutional review board (IRB) reviewed the project (#2010858-QI) and determined that the project was quality-improvement activity, not human subject research, and therefore did not require additional IRB review.

Results

We identified 21 patients in the pre-intervention period and 31 patients in the postintervention period with definitive IE who had guideline indications for surgery. The postintervention cohort was older and had more male patients; this difference was not statistically significant. No differences were noted between the groups for race, gender, or intravenous (IV) drug use (Table 2). Chi-square tests of independence were performed to assess the relationship between age and our primary outcomes. There was a significant relationship between age and the likelihood of receiving or being transferred for surgery (59.3% vs 50% vs 7.7% for 18-44 y, 45-64 y, and ≥ 65 y, respectively; χ² [2, N = 52] = 9.67; P = .008), but not between age and mortality (14.8% vs 25.0% vs 30.8% for 18-44 y, 45-64 y, and ≥ 65 y, respectively; χ²  = 1.48 [2, N = 52; P = .478]. The electronic version of the clinical pathway was activated and used in only 3 of the 31 patients in the postintervention period. Consultations to ID, cardiology, and CTS teams were compared between the study periods (Table 2). Although more consultations were seen in the postintervention period, differences were not statistically significant.

The unadjusted primary outcomes are shown in Table 2. More surgeries were performed per guideline indications, and fewer deaths were noted in the postintervention period than in the pre-intervention period, but the differences were not statistically significant (Table 2).

Because the postintervention period had more male patients and older patients, we evaluated the outcomes using a logistic regression model controlling for both age and gender. The odds of surgery or transfer for surgery for patients in the postintervention period were 4.88 (95% CI, 1.20-19.79; P = .027) as compared with the pre-intervention period, and the odds ratio for death among patients in the postintervention period compared with the pre-intervention period was 0.40 (95% CI, 0.09-1.69; P = .21) (Figure 2).

Discussion

In our study, patients with IE with guideline indications for surgery had significantly higher rates of surgery in the postintervention period than in the pre-intervention period. The implementation of an MDT, recurring educational sessions, and efforts to implement and familiarize team members with the clinical pathway approach are the most likely reasons for this change. The increased rates of surgery in the postintervention period were the likely proximate cause of the 60% reduction in in-hospital mortality. This improvement in mortality, while not statistically significant, is very likely to be clinically significant and helps reinforce the value of the MDT intervention used.

Our findings are consistent with existing and mounting literature on the use of MDTs to improve outcomes for patients with IE, including 2 studies that noted an increased rate of surgery for patients with indications.^8,19 Several other studies in both Europe and North America have found significant decreases in mortality,^6-11,20,21 rates of complications,⁹ time to diagnosis and treatment,¹¹ and length of stay^9,20 for patients with IE managed with an MDT strategy. Although current AHA guidelines for care of patients with IE do suggest an MDT approach, the strategy for this approach is not well established.²² Only 1 study that has implemented a new MDT protocol for care of IE has been conducted in the United States.⁸

While effective MDTs certainly improve outcomes in patients with IE, there are reported differences in implementation of such an approach. With the MDT model as the core, various implementations included regular case conferences,^{10,11,19,21,23} formation of a consulting team,^6,8 or establishment of a new protocol or algorithm for care.^8,9,20 Our approach used a clinical pathway as a basis for improved communication among consulting services, education of learning providers via regular case conferences, and implementation of an electronic clinical care pathway to guide them step by step. Our pathway followed the institutionally standardized algorithm (Figure 1), using what we called the 6 T’s approach (Table 1), that guides providers to evaluate critical cases in a fast track.¹⁷

To the best of our knowledge, ours is the first report of an MDT that used an electronic clinical care pathway embedded within the EHR. The electronic version of our clinical pathway went live for only the second half of the postintervention study period, which is the most likely reason for its limited utilization. It is also possible that educational efforts in the first half of the intervention period were sufficient to familiarize providers with the care pathway such that the electronic version was seldom needed. We are exploring other possible ways of improving electronic pathway utilization, such as improving the feature usability and further systemwide educational efforts.

Our study has other limitations. Quasi-experimental before-and-after comparisons are subject to confounding from concurrent interventions. We had a substantial change in cardiothoracic faculty soon after the commencement of our efforts to form the MDT, and thus cannot rule out differences related to their comfort level in considering or offering surgery. We also cannot rule out a Hawthorne effect, where knowledge of the ongoing quality-improvement project changed provider behavior, making surgery more likely. We did not evaluate rates of right- versus left-sided endocarditis, which have been linked to mortality.²⁴ Our study also was performed across a single academic institution, which may limit its generalizability. Finally, our study may not have been adequately powered to detect differences in mortality due to implementation of the MDT approach.

Conclusion

Our work suggests that an MDT for IE can be successfully designed and implemented with a clinical pathway using quality-improvement tools in centers where subspecialty services are available. Our approach was associated with a higher rate of surgery among patients with guideline indications for surgery and may reduce in-hospital mortality. An electronic clinical care pathway embedded in the EHR is feasible and may have a role in MDT implementation.

These data were also accepted as a poster at IDWeek 2022, Washington, DC. The poster abstract is published in an online supplement of Open Forum Infectious Diseases as an abstract publication.

Corresponding author: Haley Crosby; hwc2pd@health.missouri.edu

Disclosures: None reported.

Study 1 Overview (Menon et al)

Objective: To determine whether a 0.25 mg/kg dose of intravenous tenecteplase is noninferior to intravenous alteplase 0.9 mg/kg for patients with acute ischemic stroke eligible for thrombolytic therapy.

Design: Multicenter, parallel-group, open-label randomized controlled trial.

Setting and participants: The trial was conducted at 22 primary and comprehensive stroke centers across Canada. A primary stroke center was defined as a hospital capable of offering intravenous thrombolysis to patients with acute ischemic stroke, while a comprehensive stroke center was able to offer thrombectomy services in addition. The involved centers also participated in Canadian quality improvement registries (either Quality Improvement and Clinical Research [QuiCR] or Optimizing Patient Treatment in Major Ischemic Stroke with EVT [OPTIMISE]) that track patient outcomes. Patients were eligible for inclusion if they were aged 18 years or older, had a diagnosis of acute ischemic stroke, presented within 4.5 hours of symptom onset, and were eligible for thrombolysis according to Canadian guidelines.

Patients were randomized in a 1:1 fashion to either intravenous tenecteplase (0.25 mg/kg single dose, maximum of 25 mg) or intravenous alteplase (0.9 mg/kg total dose to a maximum of 90 mg, delivered as a bolus followed by a continuous infusion). A total of 1600 patients were enrolled, with 816 randomly assigned to the tenecteplase arm and 784 to the alteplase arm; 1577 patients were included in the intention-to-treat (ITT) analysis (n = 806 tenecteplase; n = 771 alteplase). The median age of enrollees was 74 years, and 52.1% of the ITT population were men.

Main outcome measures: In the ITT population, the primary outcome measure was a modified Rankin score (mRS) of 0 or 1 at 90 to 120 days post treatment. Safety outcomes included symptomatic intracerebral hemorrhage, orolingual angioedema, extracranial bleeding that required blood transfusion (all within 24 hours of thrombolytic administration), and all-cause mortality at 90 days. The noninferiority threshold for intravenous tenecteplase was set as the lower 95% CI of the difference between the tenecteplase and alteplase groups in the proportion of patients who met the primary outcome exceeding –5%.

Main results: The primary outcome of mRS of either 0 or 1 at 90 to 120 days of treatment occurred in 296 (36.9%) of the 802 patients assigned to tenecteplase and 266 (34.8%) of the 765 patients assigned to alteplase (unadjusted risk difference, 2.1%; 95% CI, –2.6 to 6.9). The prespecified noninferiority threshold was met. There were no significant differences between the groups in rates of intracerebral hemorrhage at 24 hours or 90-day all-cause mortality.

Conclusion: Intravenous tenecteplase is a reasonable alternative to alteplase for patients eligible for thrombolytic therapy.

Study 2 Overview (Wang et al)

Objective: To determine whether tenecteplase (dose 0.25 mg/kg) is noninferior to alteplase in patients with acute ischemic stroke who are within 4.5 hours of symptom onset and eligible for thrombolytic therapy but either refused or were ineligible for endovascular thrombectomy.

Design: Multicenter, prospective, open-label, randomized, controlled noninferiority trial.

Setting and participants: This trial was conducted at 53 centers across China and included patients 18 years of age or older who were within 4.5 hours of symptom onset and were thrombolytic eligible, had a mRS ≤ 1 at enrollment, and had a National Institutes of Health Stroke Scale score between 5 and 25. Eligible participants were randomized 1:1 to either tenecteplase 0.25 mg/kg (maximum dose 25 mg) or alteplase 0.9 mg/kg (maximum dose 90 mg, administered as a bolus followed by infusion). During the enrollment period (June 12, 2021, to May 29, 2022), a total of 1430 participants were enrolled, and, of those, 716 were randomly assigned to tenecteplase and 714 to alteplase. Six patients assigned to tenecteplase and 7 assigned to alteplase did not receive drugs. At 90 days, 5 in the tenecteplase group and 11 in the alteplase group were lost to follow up.

Main outcome measures: The primary efficacy outcome was a mRS of 0 or 1 at 90 days. The primary safety outcome was intracranial hemorrhage within 36 hours. Safety outcomes included parenchymal hematoma 2, as defined by the European Cooperative Acute Stroke Study III; any intracranial or significant hemorrhage, as defined by the Global Utilization of Streptokinase and Tissue Plasminogen Activator for Occluded Coronary Arteries criteria; and death from all causes at 90 days. Noninferiority for tenecteplase would be declared if the lower 97.5% 1-sided CI for the relative risk (RR) for the primary outcome did not cross 0.937.

Main results: In the modified ITT population, the primary outcome occurred in 439 (62%) of the tenecteplase group and 405 (68%) of the alteplase group (RR, 1.07; 95% CI, 0.98-1.16). This met the prespecified margin for noninferiority. Intracranial hemorrhage within 36 hours was experienced by 15 (2%) patients in the tenecteplase group and 13 (2%) in the alteplase group (RR, 1.18; 95% CI, 0.56-2.50). Death at 90 days occurred in 46 (7%) patients in the tenecteplase group and 35 (5%) in the alteplase group (RR, 1.31; 95% CI, 0.86-2.01).

Conclusion: Tenecteplase was noninferior to alteplase in patients with acute ischemic stroke who met criteria for thrombolysis and either refused or were ineligible for endovascular thrombectomy.

Commentary

Alteplase has been FDA-approved for managing acute ischemic stroke since 1996 and has demonstrated positive effects on functional outcomes. Drawbacks of alteplase therapy, however, include bleeding risk as well as cumbersome administration of a bolus dose followed by a 60-minute infusion. In recent years, the question of whether or not tenecteplase could replace alteplase as the preferred thrombolytic for acute ischemic stroke has garnered much attention. Several features of tenecteplase make it an attractive option, including increased fibrin specificity, a longer half-life, and ease of administration as a single, rapid bolus dose. In phase 2 trials that compared tenecteplase 0.25 mg/kg with alteplase, findings suggested the potential for early neurological improvement as well as improved outcomes at 90 days. While the role of tenecteplase in acute myocardial infarction has been well established due to ease of use and a favorable adverse-effect profile,¹ there is much less evidence from phase 3 randomized controlled clinical trials to secure the role of tenecteplase in acute ischemic stroke.²

Menon et al attempted to close this gap in the literature by conducting a randomized controlled clinical trial (AcT) comparing tenecteplase to alteplase in a Canadian patient population. The trial's patient population mirrors that of real-world data from global registries in terms of age, sex, and baseline stroke severity. In addition, the eligibility window of 4.5 hours from symptom onset as well as the inclusion and exclusion criteria for therapy are common to those utilized in other countries, making the findings generalizable. There were some limitations to the study, however, including the impact of COVID-19 on recruitment efforts as well as limitations of research infrastructure and staffing, which may have limited enrollment efforts at primary stroke centers. Nonetheless, the authors concluded that their results provide evidence that tenecteplase is comparable to alteplase, with similar functional and safety outcomes.

TRACE-2 focused on an Asian patient population and provided follow up to the dose-ranging TRACE-1 phase 2 trial. TRACE-1 showed that tenecteplase 0.25 mg/kg had a similar safety profile to alteplase 0.9 mg/kg in Chinese patients presenting with acute ischemic stroke. TRACE-2 sought to establish noninferiority of tenecteplase and excluded patients who were ineligible for or refused thrombectomy. Interestingly, the tenecteplase arm, as the authors point out, had numerically greater mortality as well as intracranial hemorrhage, but these differences were not statistically significant between the treatment groups at 90 days. The TRACE-2 results parallel those of AcT, and although there were differences in ethnicity between the 2 trials, the authors cite this as evidence that the results are consistent and provide evidence for the role of tenecteplase in the management of acute ischemic stroke. Limitations of this trial include potential bias from its open-label design, as well as exclusion of patients with more severe strokes eligible for thrombectomy, which may limit generalizability to patients with more disabling strokes who could have a higher risk of intracranial hemorrhage.

Application for Clinical Practice and System Implementation

Across the country, many organizations have adopted the off-label use of tenecteplase for managing fibrinolytic-eligible acute ischemic stroke patients. In most cases, the impetus for change is the ease of dosing and administration of tenecteplase compared to alteplase, while the inclusion and exclusion criteria and overall management remain the same. Timely administration of therapy in stroke is critical. This, along with other time constraints in stroke workflows, the weight-based calculation of alteplase doses, and alteplase’s administration method may lead to medication errors when using this agent to treat patients with acute stroke. The rapid, single-dose administration of tenecteplase removes many barriers that hospitals face when patients may need to be treated and then transferred to another site for further care. Without the worry to “drip and ship,” the completion of administration may allow for timely patient transfer and eliminate the need for monitoring of an infusion during transfer. For some organizations, there may be a potential for drug cost-savings as well as improved metrics, such as door-to-needle time, but the overall effects of switching from alteplase to tenecteplase remain to be seen. Currently, tenecteplase is included in stroke guidelines as a “reasonable choice,” though with a low level of evidence.³ However, these 2 studies support the role of tenecteplase in acute ischemic stroke treatment and may provide a foundation for further studies to establish the role of tenecteplase in the acute ischemic stroke population.

Practice Points

• Tenecteplase may be considered as an alternative to alteplase for acute ischemic stroke for patients who meet eligibility criteria for thrombolytics; this recommendation is included in the most recent stroke guidelines, although tenecteplase has not been demonstrated to be superior to alteplase.
• The ease of administration of tenecteplase as a single intravenous bolus dose represents a benefit compared to alteplase; it is an off-label use, however, and further studies are needed to establish the superiority of tenecteplase in terms of functional and safety outcomes.

– Carol Heunisch, PharmD, BCPS, BCCP
Pharmacy Department, NorthShore–Edward-Elmhurst Health, Evanston, IL

Study 1 Overview (Menon et al)

Objective: To determine whether a 0.25 mg/kg dose of intravenous tenecteplase is noninferior to intravenous alteplase 0.9 mg/kg for patients with acute ischemic stroke eligible for thrombolytic therapy.

Design: Multicenter, parallel-group, open-label randomized controlled trial.

Setting and participants: The trial was conducted at 22 primary and comprehensive stroke centers across Canada. A primary stroke center was defined as a hospital capable of offering intravenous thrombolysis to patients with acute ischemic stroke, while a comprehensive stroke center was able to offer thrombectomy services in addition. The involved centers also participated in Canadian quality improvement registries (either Quality Improvement and Clinical Research [QuiCR] or Optimizing Patient Treatment in Major Ischemic Stroke with EVT [OPTIMISE]) that track patient outcomes. Patients were eligible for inclusion if they were aged 18 years or older, had a diagnosis of acute ischemic stroke, presented within 4.5 hours of symptom onset, and were eligible for thrombolysis according to Canadian guidelines.

Patients were randomized in a 1:1 fashion to either intravenous tenecteplase (0.25 mg/kg single dose, maximum of 25 mg) or intravenous alteplase (0.9 mg/kg total dose to a maximum of 90 mg, delivered as a bolus followed by a continuous infusion). A total of 1600 patients were enrolled, with 816 randomly assigned to the tenecteplase arm and 784 to the alteplase arm; 1577 patients were included in the intention-to-treat (ITT) analysis (n = 806 tenecteplase; n = 771 alteplase). The median age of enrollees was 74 years, and 52.1% of the ITT population were men.

Main outcome measures: In the ITT population, the primary outcome measure was a modified Rankin score (mRS) of 0 or 1 at 90 to 120 days post treatment. Safety outcomes included symptomatic intracerebral hemorrhage, orolingual angioedema, extracranial bleeding that required blood transfusion (all within 24 hours of thrombolytic administration), and all-cause mortality at 90 days. The noninferiority threshold for intravenous tenecteplase was set as the lower 95% CI of the difference between the tenecteplase and alteplase groups in the proportion of patients who met the primary outcome exceeding –5%.

Main results: The primary outcome of mRS of either 0 or 1 at 90 to 120 days of treatment occurred in 296 (36.9%) of the 802 patients assigned to tenecteplase and 266 (34.8%) of the 765 patients assigned to alteplase (unadjusted risk difference, 2.1%; 95% CI, –2.6 to 6.9). The prespecified noninferiority threshold was met. There were no significant differences between the groups in rates of intracerebral hemorrhage at 24 hours or 90-day all-cause mortality.

Conclusion: Intravenous tenecteplase is a reasonable alternative to alteplase for patients eligible for thrombolytic therapy.

Study 2 Overview (Wang et al)

Objective: To determine whether tenecteplase (dose 0.25 mg/kg) is noninferior to alteplase in patients with acute ischemic stroke who are within 4.5 hours of symptom onset and eligible for thrombolytic therapy but either refused or were ineligible for endovascular thrombectomy.

Design: Multicenter, prospective, open-label, randomized, controlled noninferiority trial.

Setting and participants: This trial was conducted at 53 centers across China and included patients 18 years of age or older who were within 4.5 hours of symptom onset and were thrombolytic eligible, had a mRS ≤ 1 at enrollment, and had a National Institutes of Health Stroke Scale score between 5 and 25. Eligible participants were randomized 1:1 to either tenecteplase 0.25 mg/kg (maximum dose 25 mg) or alteplase 0.9 mg/kg (maximum dose 90 mg, administered as a bolus followed by infusion). During the enrollment period (June 12, 2021, to May 29, 2022), a total of 1430 participants were enrolled, and, of those, 716 were randomly assigned to tenecteplase and 714 to alteplase. Six patients assigned to tenecteplase and 7 assigned to alteplase did not receive drugs. At 90 days, 5 in the tenecteplase group and 11 in the alteplase group were lost to follow up.

Main outcome measures: The primary efficacy outcome was a mRS of 0 or 1 at 90 days. The primary safety outcome was intracranial hemorrhage within 36 hours. Safety outcomes included parenchymal hematoma 2, as defined by the European Cooperative Acute Stroke Study III; any intracranial or significant hemorrhage, as defined by the Global Utilization of Streptokinase and Tissue Plasminogen Activator for Occluded Coronary Arteries criteria; and death from all causes at 90 days. Noninferiority for tenecteplase would be declared if the lower 97.5% 1-sided CI for the relative risk (RR) for the primary outcome did not cross 0.937.

Main results: In the modified ITT population, the primary outcome occurred in 439 (62%) of the tenecteplase group and 405 (68%) of the alteplase group (RR, 1.07; 95% CI, 0.98-1.16). This met the prespecified margin for noninferiority. Intracranial hemorrhage within 36 hours was experienced by 15 (2%) patients in the tenecteplase group and 13 (2%) in the alteplase group (RR, 1.18; 95% CI, 0.56-2.50). Death at 90 days occurred in 46 (7%) patients in the tenecteplase group and 35 (5%) in the alteplase group (RR, 1.31; 95% CI, 0.86-2.01).

Conclusion: Tenecteplase was noninferior to alteplase in patients with acute ischemic stroke who met criteria for thrombolysis and either refused or were ineligible for endovascular thrombectomy.

Commentary

Alteplase has been FDA-approved for managing acute ischemic stroke since 1996 and has demonstrated positive effects on functional outcomes. Drawbacks of alteplase therapy, however, include bleeding risk as well as cumbersome administration of a bolus dose followed by a 60-minute infusion. In recent years, the question of whether or not tenecteplase could replace alteplase as the preferred thrombolytic for acute ischemic stroke has garnered much attention. Several features of tenecteplase make it an attractive option, including increased fibrin specificity, a longer half-life, and ease of administration as a single, rapid bolus dose. In phase 2 trials that compared tenecteplase 0.25 mg/kg with alteplase, findings suggested the potential for early neurological improvement as well as improved outcomes at 90 days. While the role of tenecteplase in acute myocardial infarction has been well established due to ease of use and a favorable adverse-effect profile,¹ there is much less evidence from phase 3 randomized controlled clinical trials to secure the role of tenecteplase in acute ischemic stroke.²

Menon et al attempted to close this gap in the literature by conducting a randomized controlled clinical trial (AcT) comparing tenecteplase to alteplase in a Canadian patient population. The trial's patient population mirrors that of real-world data from global registries in terms of age, sex, and baseline stroke severity. In addition, the eligibility window of 4.5 hours from symptom onset as well as the inclusion and exclusion criteria for therapy are common to those utilized in other countries, making the findings generalizable. There were some limitations to the study, however, including the impact of COVID-19 on recruitment efforts as well as limitations of research infrastructure and staffing, which may have limited enrollment efforts at primary stroke centers. Nonetheless, the authors concluded that their results provide evidence that tenecteplase is comparable to alteplase, with similar functional and safety outcomes.

TRACE-2 focused on an Asian patient population and provided follow up to the dose-ranging TRACE-1 phase 2 trial. TRACE-1 showed that tenecteplase 0.25 mg/kg had a similar safety profile to alteplase 0.9 mg/kg in Chinese patients presenting with acute ischemic stroke. TRACE-2 sought to establish noninferiority of tenecteplase and excluded patients who were ineligible for or refused thrombectomy. Interestingly, the tenecteplase arm, as the authors point out, had numerically greater mortality as well as intracranial hemorrhage, but these differences were not statistically significant between the treatment groups at 90 days. The TRACE-2 results parallel those of AcT, and although there were differences in ethnicity between the 2 trials, the authors cite this as evidence that the results are consistent and provide evidence for the role of tenecteplase in the management of acute ischemic stroke. Limitations of this trial include potential bias from its open-label design, as well as exclusion of patients with more severe strokes eligible for thrombectomy, which may limit generalizability to patients with more disabling strokes who could have a higher risk of intracranial hemorrhage.

Application for Clinical Practice and System Implementation

Across the country, many organizations have adopted the off-label use of tenecteplase for managing fibrinolytic-eligible acute ischemic stroke patients. In most cases, the impetus for change is the ease of dosing and administration of tenecteplase compared to alteplase, while the inclusion and exclusion criteria and overall management remain the same. Timely administration of therapy in stroke is critical. This, along with other time constraints in stroke workflows, the weight-based calculation of alteplase doses, and alteplase’s administration method may lead to medication errors when using this agent to treat patients with acute stroke. The rapid, single-dose administration of tenecteplase removes many barriers that hospitals face when patients may need to be treated and then transferred to another site for further care. Without the worry to “drip and ship,” the completion of administration may allow for timely patient transfer and eliminate the need for monitoring of an infusion during transfer. For some organizations, there may be a potential for drug cost-savings as well as improved metrics, such as door-to-needle time, but the overall effects of switching from alteplase to tenecteplase remain to be seen. Currently, tenecteplase is included in stroke guidelines as a “reasonable choice,” though with a low level of evidence.³ However, these 2 studies support the role of tenecteplase in acute ischemic stroke treatment and may provide a foundation for further studies to establish the role of tenecteplase in the acute ischemic stroke population.

Practice Points

• Tenecteplase may be considered as an alternative to alteplase for acute ischemic stroke for patients who meet eligibility criteria for thrombolytics; this recommendation is included in the most recent stroke guidelines, although tenecteplase has not been demonstrated to be superior to alteplase.
• The ease of administration of tenecteplase as a single intravenous bolus dose represents a benefit compared to alteplase; it is an off-label use, however, and further studies are needed to establish the superiority of tenecteplase in terms of functional and safety outcomes.

– Carol Heunisch, PharmD, BCPS, BCCP
Pharmacy Department, NorthShore–Edward-Elmhurst Health, Evanston, IL

Study 1 Overview (Menon et al)

Objective: To determine whether a 0.25 mg/kg dose of intravenous tenecteplase is noninferior to intravenous alteplase 0.9 mg/kg for patients with acute ischemic stroke eligible for thrombolytic therapy.

Design: Multicenter, parallel-group, open-label randomized controlled trial.

Setting and participants: The trial was conducted at 22 primary and comprehensive stroke centers across Canada. A primary stroke center was defined as a hospital capable of offering intravenous thrombolysis to patients with acute ischemic stroke, while a comprehensive stroke center was able to offer thrombectomy services in addition. The involved centers also participated in Canadian quality improvement registries (either Quality Improvement and Clinical Research [QuiCR] or Optimizing Patient Treatment in Major Ischemic Stroke with EVT [OPTIMISE]) that track patient outcomes. Patients were eligible for inclusion if they were aged 18 years or older, had a diagnosis of acute ischemic stroke, presented within 4.5 hours of symptom onset, and were eligible for thrombolysis according to Canadian guidelines.

Patients were randomized in a 1:1 fashion to either intravenous tenecteplase (0.25 mg/kg single dose, maximum of 25 mg) or intravenous alteplase (0.9 mg/kg total dose to a maximum of 90 mg, delivered as a bolus followed by a continuous infusion). A total of 1600 patients were enrolled, with 816 randomly assigned to the tenecteplase arm and 784 to the alteplase arm; 1577 patients were included in the intention-to-treat (ITT) analysis (n = 806 tenecteplase; n = 771 alteplase). The median age of enrollees was 74 years, and 52.1% of the ITT population were men.

Main outcome measures: In the ITT population, the primary outcome measure was a modified Rankin score (mRS) of 0 or 1 at 90 to 120 days post treatment. Safety outcomes included symptomatic intracerebral hemorrhage, orolingual angioedema, extracranial bleeding that required blood transfusion (all within 24 hours of thrombolytic administration), and all-cause mortality at 90 days. The noninferiority threshold for intravenous tenecteplase was set as the lower 95% CI of the difference between the tenecteplase and alteplase groups in the proportion of patients who met the primary outcome exceeding –5%.

Main results: The primary outcome of mRS of either 0 or 1 at 90 to 120 days of treatment occurred in 296 (36.9%) of the 802 patients assigned to tenecteplase and 266 (34.8%) of the 765 patients assigned to alteplase (unadjusted risk difference, 2.1%; 95% CI, –2.6 to 6.9). The prespecified noninferiority threshold was met. There were no significant differences between the groups in rates of intracerebral hemorrhage at 24 hours or 90-day all-cause mortality.

Conclusion: Intravenous tenecteplase is a reasonable alternative to alteplase for patients eligible for thrombolytic therapy.

Study 2 Overview (Wang et al)

Objective: To determine whether tenecteplase (dose 0.25 mg/kg) is noninferior to alteplase in patients with acute ischemic stroke who are within 4.5 hours of symptom onset and eligible for thrombolytic therapy but either refused or were ineligible for endovascular thrombectomy.

Design: Multicenter, prospective, open-label, randomized, controlled noninferiority trial.

Setting and participants: This trial was conducted at 53 centers across China and included patients 18 years of age or older who were within 4.5 hours of symptom onset and were thrombolytic eligible, had a mRS ≤ 1 at enrollment, and had a National Institutes of Health Stroke Scale score between 5 and 25. Eligible participants were randomized 1:1 to either tenecteplase 0.25 mg/kg (maximum dose 25 mg) or alteplase 0.9 mg/kg (maximum dose 90 mg, administered as a bolus followed by infusion). During the enrollment period (June 12, 2021, to May 29, 2022), a total of 1430 participants were enrolled, and, of those, 716 were randomly assigned to tenecteplase and 714 to alteplase. Six patients assigned to tenecteplase and 7 assigned to alteplase did not receive drugs. At 90 days, 5 in the tenecteplase group and 11 in the alteplase group were lost to follow up.

Main outcome measures: The primary efficacy outcome was a mRS of 0 or 1 at 90 days. The primary safety outcome was intracranial hemorrhage within 36 hours. Safety outcomes included parenchymal hematoma 2, as defined by the European Cooperative Acute Stroke Study III; any intracranial or significant hemorrhage, as defined by the Global Utilization of Streptokinase and Tissue Plasminogen Activator for Occluded Coronary Arteries criteria; and death from all causes at 90 days. Noninferiority for tenecteplase would be declared if the lower 97.5% 1-sided CI for the relative risk (RR) for the primary outcome did not cross 0.937.

Main results: In the modified ITT population, the primary outcome occurred in 439 (62%) of the tenecteplase group and 405 (68%) of the alteplase group (RR, 1.07; 95% CI, 0.98-1.16). This met the prespecified margin for noninferiority. Intracranial hemorrhage within 36 hours was experienced by 15 (2%) patients in the tenecteplase group and 13 (2%) in the alteplase group (RR, 1.18; 95% CI, 0.56-2.50). Death at 90 days occurred in 46 (7%) patients in the tenecteplase group and 35 (5%) in the alteplase group (RR, 1.31; 95% CI, 0.86-2.01).

Conclusion: Tenecteplase was noninferior to alteplase in patients with acute ischemic stroke who met criteria for thrombolysis and either refused or were ineligible for endovascular thrombectomy.

Commentary

Alteplase has been FDA-approved for managing acute ischemic stroke since 1996 and has demonstrated positive effects on functional outcomes. Drawbacks of alteplase therapy, however, include bleeding risk as well as cumbersome administration of a bolus dose followed by a 60-minute infusion. In recent years, the question of whether or not tenecteplase could replace alteplase as the preferred thrombolytic for acute ischemic stroke has garnered much attention. Several features of tenecteplase make it an attractive option, including increased fibrin specificity, a longer half-life, and ease of administration as a single, rapid bolus dose. In phase 2 trials that compared tenecteplase 0.25 mg/kg with alteplase, findings suggested the potential for early neurological improvement as well as improved outcomes at 90 days. While the role of tenecteplase in acute myocardial infarction has been well established due to ease of use and a favorable adverse-effect profile,¹ there is much less evidence from phase 3 randomized controlled clinical trials to secure the role of tenecteplase in acute ischemic stroke.²

Menon et al attempted to close this gap in the literature by conducting a randomized controlled clinical trial (AcT) comparing tenecteplase to alteplase in a Canadian patient population. The trial's patient population mirrors that of real-world data from global registries in terms of age, sex, and baseline stroke severity. In addition, the eligibility window of 4.5 hours from symptom onset as well as the inclusion and exclusion criteria for therapy are common to those utilized in other countries, making the findings generalizable. There were some limitations to the study, however, including the impact of COVID-19 on recruitment efforts as well as limitations of research infrastructure and staffing, which may have limited enrollment efforts at primary stroke centers. Nonetheless, the authors concluded that their results provide evidence that tenecteplase is comparable to alteplase, with similar functional and safety outcomes.

TRACE-2 focused on an Asian patient population and provided follow up to the dose-ranging TRACE-1 phase 2 trial. TRACE-1 showed that tenecteplase 0.25 mg/kg had a similar safety profile to alteplase 0.9 mg/kg in Chinese patients presenting with acute ischemic stroke. TRACE-2 sought to establish noninferiority of tenecteplase and excluded patients who were ineligible for or refused thrombectomy. Interestingly, the tenecteplase arm, as the authors point out, had numerically greater mortality as well as intracranial hemorrhage, but these differences were not statistically significant between the treatment groups at 90 days. The TRACE-2 results parallel those of AcT, and although there were differences in ethnicity between the 2 trials, the authors cite this as evidence that the results are consistent and provide evidence for the role of tenecteplase in the management of acute ischemic stroke. Limitations of this trial include potential bias from its open-label design, as well as exclusion of patients with more severe strokes eligible for thrombectomy, which may limit generalizability to patients with more disabling strokes who could have a higher risk of intracranial hemorrhage.

Application for Clinical Practice and System Implementation

Across the country, many organizations have adopted the off-label use of tenecteplase for managing fibrinolytic-eligible acute ischemic stroke patients. In most cases, the impetus for change is the ease of dosing and administration of tenecteplase compared to alteplase, while the inclusion and exclusion criteria and overall management remain the same. Timely administration of therapy in stroke is critical. This, along with other time constraints in stroke workflows, the weight-based calculation of alteplase doses, and alteplase’s administration method may lead to medication errors when using this agent to treat patients with acute stroke. The rapid, single-dose administration of tenecteplase removes many barriers that hospitals face when patients may need to be treated and then transferred to another site for further care. Without the worry to “drip and ship,” the completion of administration may allow for timely patient transfer and eliminate the need for monitoring of an infusion during transfer. For some organizations, there may be a potential for drug cost-savings as well as improved metrics, such as door-to-needle time, but the overall effects of switching from alteplase to tenecteplase remain to be seen. Currently, tenecteplase is included in stroke guidelines as a “reasonable choice,” though with a low level of evidence.³ However, these 2 studies support the role of tenecteplase in acute ischemic stroke treatment and may provide a foundation for further studies to establish the role of tenecteplase in the acute ischemic stroke population.

Practice Points

• Tenecteplase may be considered as an alternative to alteplase for acute ischemic stroke for patients who meet eligibility criteria for thrombolytics; this recommendation is included in the most recent stroke guidelines, although tenecteplase has not been demonstrated to be superior to alteplase.
• The ease of administration of tenecteplase as a single intravenous bolus dose represents a benefit compared to alteplase; it is an off-label use, however, and further studies are needed to establish the superiority of tenecteplase in terms of functional and safety outcomes.

– Carol Heunisch, PharmD, BCPS, BCCP
Pharmacy Department, NorthShore–Edward-Elmhurst Health, Evanston, IL

NEW ORLEANS – Treatment of patients with heart failure with preserved ejection fraction (HFpEF) with the SGLT2 inhibitor dapagliflozin (Farxiga) for 24 weeks produced significant and beneficial reductions in left-heart filling pressures in a mechanistic, randomized clinical study.

The findings “provide new insight into the mechanisms underlying the favorable clinical effects of dapagliflozin in patients with HFpEF,” Barry A. Borlaug, MD, said at the joint scientific sessions of the American College of Cardiology and the World Heart Federation. “Elevations in left heart filling pressures at rest and during exercise are fundamental pathophysiologic features of HFpEF,” he noted.

Results from prior studies documented the benefit of dapagliflozin for improving clinical outcomes in patients with HFpEF in the DELIVER trial, and for the related sodium-glucose cotransporter 2 (SGLT2) inhibitor empagliflozin (Jardiance) in the EMPEROR-Preserved trial. The new findings presented by Dr. Borlaug provide evidence from a placebo-controlled, prospective study for one way by which these SGLT2 inhibitors exert this benefit in patients with HFpEF.

The results of his single-center study showed that, in patients with HFpEF who also exhibited “severe” elevations in pulmonary capillary wedge pressure (PCWP) during exercise, 24 weeks of treatment with dapagliflozin led to a significant reduction in PCWP during exercise. The treatment produced an average 6.1–mm Hg drop from baseline compared with control patients who received placebo. A similar pattern occurred when these patients were at rest, when dapagliflozin treatment linked with a significant average reduction in PCWP from baseline of 3.5 mm Hg compared with controls.
 

Improving a ‘specific and fundamental’ feature of HFpEF

“This fantastic study looked at one of the fundamental aspects of HFpEF,” said John R. Teerlink, MD, designated discussant for the study. “You’ve shown that dapagliflozin targets a specific and fundamental” manifestation of HFpEF by lowering PCWP, said Dr. Teerlink, director of Heart Failure at the San Francisco Veterans Affairs Medical Center.

However, Dr. Teerlink added, the study did not directly address the related question of what physiologic action of dapagliflozin produces this notable drop in PCWP.

“We’re just starting to look at that,” replied Dr. Borlaug, a cardiologist and professor at the Mayo Clinic in Rochester, Minn.

He reported finding an intriguing correlate in the current study linked to the cut in PCWP with dapagliflozin treatment. The SGLT2 inhibitor at a standard daily 10-mg dose produced an average 3.5-kg drop in body weight in the dapagliflozin-treated patients that significantly linked with the changes in PCWP both at rest and during exercise. Dapagliflozin-treated patients also showed a significant reduction from their baseline plasma volume compared with placebo-treated patients, but this “poorly correlated” with the dapagliflozin-linked cuts in PCWP, Dr. Borlaug said.

“I don’t think this means weight loss is the cause of the hemodynamic benefit, but maybe it’s an indicator. When patients [with HFpEF] lose weight, they are in a metabolic state that leads to good changes in hemodynamics,” he suggested. “My guess is that there is probably a combination of many different little things [caused by dapagliflozin treatment of patients with HFpEF] that together result in the 20%-25% relative improvement we see in filling pressure.”
 

An ‘obese, cardiometabolic’ HFpEF phenotype

The study enrolled patients with HFpEF and a left ventricular ejection fraction of at least 50%, a New York Heart Association functional class of 2 or 3, and a PCWP during exercise of at least 25 mm Hg. Of the 37 evaluable patients, about two-thirds of the patients were women, more than two-thirds were in functional class 3, about 70% were obese, and their average ejection fraction was about 62%. The study excluded patients with HFpEF who also had type 1 diabetes, cardiomyopathy, pericardial disease, or other causes of dyspnea or heart failure.

Dr. Teerlink asked about the generalizability of the findings, as the study cohort seemed to differ in certain respects from the patients enrolled in the DELIVER trial, and because of the many apparently distinct patient phenotypes that exist within the scope of HFpEF.

An “obese, cardiometabolic phenotype” predominated the study cohort, Dr. Borlaug said. “The patients we enrolled look like the HFpEF patients seen in U.S. clinics.” However, he added that “in reality, many [HFpEF phenotypes] coexist in one patient. It’s not that simple,” that every patient with HFpEF can be categorized into a single HFpEF phenotype.

The researchers monitored PCWP invasively with high-fidelity micromanometer catheters.

The study was sponsored by AstraZeneca, the company that markets dapagliflozin (Farxiga). Dr. Borlaug has received research funding from AstraZeneca, as well as from Corvia, GlaxoSmithKline, Medtronic, Mesoblast, Novo Nordisk, and Tenax. Dr. Teerlink has had financial relationships with AstraZeneca, as well as with Amgen, Bayer, Boehringer Ingelheim, Bristol Myers Squibb, Cytokinetics, Medtronic, Merck, Novartis, Servier, and Windtree Therapeutics.

NEW ORLEANS – Treatment of patients with heart failure with preserved ejection fraction (HFpEF) with the SGLT2 inhibitor dapagliflozin (Farxiga) for 24 weeks produced significant and beneficial reductions in left-heart filling pressures in a mechanistic, randomized clinical study.

The findings “provide new insight into the mechanisms underlying the favorable clinical effects of dapagliflozin in patients with HFpEF,” Barry A. Borlaug, MD, said at the joint scientific sessions of the American College of Cardiology and the World Heart Federation. “Elevations in left heart filling pressures at rest and during exercise are fundamental pathophysiologic features of HFpEF,” he noted.

Results from prior studies documented the benefit of dapagliflozin for improving clinical outcomes in patients with HFpEF in the DELIVER trial, and for the related sodium-glucose cotransporter 2 (SGLT2) inhibitor empagliflozin (Jardiance) in the EMPEROR-Preserved trial. The new findings presented by Dr. Borlaug provide evidence from a placebo-controlled, prospective study for one way by which these SGLT2 inhibitors exert this benefit in patients with HFpEF.

The results of his single-center study showed that, in patients with HFpEF who also exhibited “severe” elevations in pulmonary capillary wedge pressure (PCWP) during exercise, 24 weeks of treatment with dapagliflozin led to a significant reduction in PCWP during exercise. The treatment produced an average 6.1–mm Hg drop from baseline compared with control patients who received placebo. A similar pattern occurred when these patients were at rest, when dapagliflozin treatment linked with a significant average reduction in PCWP from baseline of 3.5 mm Hg compared with controls.
 

Improving a ‘specific and fundamental’ feature of HFpEF

“This fantastic study looked at one of the fundamental aspects of HFpEF,” said John R. Teerlink, MD, designated discussant for the study. “You’ve shown that dapagliflozin targets a specific and fundamental” manifestation of HFpEF by lowering PCWP, said Dr. Teerlink, director of Heart Failure at the San Francisco Veterans Affairs Medical Center.

However, Dr. Teerlink added, the study did not directly address the related question of what physiologic action of dapagliflozin produces this notable drop in PCWP.

“We’re just starting to look at that,” replied Dr. Borlaug, a cardiologist and professor at the Mayo Clinic in Rochester, Minn.

He reported finding an intriguing correlate in the current study linked to the cut in PCWP with dapagliflozin treatment. The SGLT2 inhibitor at a standard daily 10-mg dose produced an average 3.5-kg drop in body weight in the dapagliflozin-treated patients that significantly linked with the changes in PCWP both at rest and during exercise. Dapagliflozin-treated patients also showed a significant reduction from their baseline plasma volume compared with placebo-treated patients, but this “poorly correlated” with the dapagliflozin-linked cuts in PCWP, Dr. Borlaug said.

“I don’t think this means weight loss is the cause of the hemodynamic benefit, but maybe it’s an indicator. When patients [with HFpEF] lose weight, they are in a metabolic state that leads to good changes in hemodynamics,” he suggested. “My guess is that there is probably a combination of many different little things [caused by dapagliflozin treatment of patients with HFpEF] that together result in the 20%-25% relative improvement we see in filling pressure.”
 

An ‘obese, cardiometabolic’ HFpEF phenotype

The study enrolled patients with HFpEF and a left ventricular ejection fraction of at least 50%, a New York Heart Association functional class of 2 or 3, and a PCWP during exercise of at least 25 mm Hg. Of the 37 evaluable patients, about two-thirds of the patients were women, more than two-thirds were in functional class 3, about 70% were obese, and their average ejection fraction was about 62%. The study excluded patients with HFpEF who also had type 1 diabetes, cardiomyopathy, pericardial disease, or other causes of dyspnea or heart failure.

Dr. Teerlink asked about the generalizability of the findings, as the study cohort seemed to differ in certain respects from the patients enrolled in the DELIVER trial, and because of the many apparently distinct patient phenotypes that exist within the scope of HFpEF.

An “obese, cardiometabolic phenotype” predominated the study cohort, Dr. Borlaug said. “The patients we enrolled look like the HFpEF patients seen in U.S. clinics.” However, he added that “in reality, many [HFpEF phenotypes] coexist in one patient. It’s not that simple,” that every patient with HFpEF can be categorized into a single HFpEF phenotype.

The researchers monitored PCWP invasively with high-fidelity micromanometer catheters.

The study was sponsored by AstraZeneca, the company that markets dapagliflozin (Farxiga). Dr. Borlaug has received research funding from AstraZeneca, as well as from Corvia, GlaxoSmithKline, Medtronic, Mesoblast, Novo Nordisk, and Tenax. Dr. Teerlink has had financial relationships with AstraZeneca, as well as with Amgen, Bayer, Boehringer Ingelheim, Bristol Myers Squibb, Cytokinetics, Medtronic, Merck, Novartis, Servier, and Windtree Therapeutics.

NEW ORLEANS – Treatment of patients with heart failure with preserved ejection fraction (HFpEF) with the SGLT2 inhibitor dapagliflozin (Farxiga) for 24 weeks produced significant and beneficial reductions in left-heart filling pressures in a mechanistic, randomized clinical study.

The findings “provide new insight into the mechanisms underlying the favorable clinical effects of dapagliflozin in patients with HFpEF,” Barry A. Borlaug, MD, said at the joint scientific sessions of the American College of Cardiology and the World Heart Federation. “Elevations in left heart filling pressures at rest and during exercise are fundamental pathophysiologic features of HFpEF,” he noted.

Results from prior studies documented the benefit of dapagliflozin for improving clinical outcomes in patients with HFpEF in the DELIVER trial, and for the related sodium-glucose cotransporter 2 (SGLT2) inhibitor empagliflozin (Jardiance) in the EMPEROR-Preserved trial. The new findings presented by Dr. Borlaug provide evidence from a placebo-controlled, prospective study for one way by which these SGLT2 inhibitors exert this benefit in patients with HFpEF.

The results of his single-center study showed that, in patients with HFpEF who also exhibited “severe” elevations in pulmonary capillary wedge pressure (PCWP) during exercise, 24 weeks of treatment with dapagliflozin led to a significant reduction in PCWP during exercise. The treatment produced an average 6.1–mm Hg drop from baseline compared with control patients who received placebo. A similar pattern occurred when these patients were at rest, when dapagliflozin treatment linked with a significant average reduction in PCWP from baseline of 3.5 mm Hg compared with controls.
 

Improving a ‘specific and fundamental’ feature of HFpEF

“This fantastic study looked at one of the fundamental aspects of HFpEF,” said John R. Teerlink, MD, designated discussant for the study. “You’ve shown that dapagliflozin targets a specific and fundamental” manifestation of HFpEF by lowering PCWP, said Dr. Teerlink, director of Heart Failure at the San Francisco Veterans Affairs Medical Center.

However, Dr. Teerlink added, the study did not directly address the related question of what physiologic action of dapagliflozin produces this notable drop in PCWP.

“We’re just starting to look at that,” replied Dr. Borlaug, a cardiologist and professor at the Mayo Clinic in Rochester, Minn.

He reported finding an intriguing correlate in the current study linked to the cut in PCWP with dapagliflozin treatment. The SGLT2 inhibitor at a standard daily 10-mg dose produced an average 3.5-kg drop in body weight in the dapagliflozin-treated patients that significantly linked with the changes in PCWP both at rest and during exercise. Dapagliflozin-treated patients also showed a significant reduction from their baseline plasma volume compared with placebo-treated patients, but this “poorly correlated” with the dapagliflozin-linked cuts in PCWP, Dr. Borlaug said.

“I don’t think this means weight loss is the cause of the hemodynamic benefit, but maybe it’s an indicator. When patients [with HFpEF] lose weight, they are in a metabolic state that leads to good changes in hemodynamics,” he suggested. “My guess is that there is probably a combination of many different little things [caused by dapagliflozin treatment of patients with HFpEF] that together result in the 20%-25% relative improvement we see in filling pressure.”
 

An ‘obese, cardiometabolic’ HFpEF phenotype

The study enrolled patients with HFpEF and a left ventricular ejection fraction of at least 50%, a New York Heart Association functional class of 2 or 3, and a PCWP during exercise of at least 25 mm Hg. Of the 37 evaluable patients, about two-thirds of the patients were women, more than two-thirds were in functional class 3, about 70% were obese, and their average ejection fraction was about 62%. The study excluded patients with HFpEF who also had type 1 diabetes, cardiomyopathy, pericardial disease, or other causes of dyspnea or heart failure.

Dr. Teerlink asked about the generalizability of the findings, as the study cohort seemed to differ in certain respects from the patients enrolled in the DELIVER trial, and because of the many apparently distinct patient phenotypes that exist within the scope of HFpEF.

An “obese, cardiometabolic phenotype” predominated the study cohort, Dr. Borlaug said. “The patients we enrolled look like the HFpEF patients seen in U.S. clinics.” However, he added that “in reality, many [HFpEF phenotypes] coexist in one patient. It’s not that simple,” that every patient with HFpEF can be categorized into a single HFpEF phenotype.

The researchers monitored PCWP invasively with high-fidelity micromanometer catheters.

The study was sponsored by AstraZeneca, the company that markets dapagliflozin (Farxiga). Dr. Borlaug has received research funding from AstraZeneca, as well as from Corvia, GlaxoSmithKline, Medtronic, Mesoblast, Novo Nordisk, and Tenax. Dr. Teerlink has had financial relationships with AstraZeneca, as well as with Amgen, Bayer, Boehringer Ingelheim, Bristol Myers Squibb, Cytokinetics, Medtronic, Merck, Novartis, Servier, and Windtree Therapeutics.

Even relatively small changes in cardiorespiratory fitness (CRF) are associated with “considerable” impact on clinical symptoms and mortality risk among individuals with and without cardiovascular disease, new observational data in United States veterans suggest.

“We had a few surprises,” Peter Kokkinos, PhD, Robert Wood Johnson Medical School, New Brunswick, N. J., and the VA Medical Center, Washington, told this news organization. “First, the mortality risk was greatly attenuated in those who were moderate- and high-fit at baseline, despite a decline in fitness over time. In fact, in those with no CVD, the risk was not significantly elevated even when CRF declined by at least one MET [metabolic equivalent of task] for the moderate-fit and two or more METs for the high-fit group.”

“Second,” he said, “Our findings suggest that the impact of CRF on human health is not ephemeral, but rather carries a certain protection over time. Third, the changes in CRF necessary to impact mortality risk are relatively small (> 1.0 METs). This has a substantial clinical and public health significance.”

The study was published online in the Journal of the American College of Cardiology.
 

CRF up, mortality risk down

Dr. Kokkinos and colleagues analyzed data from 93,060 U.S. veterans; of these, 95% were men (mean age, 61.4 years) and 5% were women (mean age, 57.1 years). Overall, 72% of participants were White; 19.8%, African American; 5.2%, Hispanic; 1.9%, Native American, Asian, or Hawaiian; and 1.2%, unknown.

Participants were assigned to age-specific fitness quartiles based on peak METs achieved on a baseline exercise treadmill test (ETT). Each CRF quartile was stratified based on CRF changes (increase, decrease, no change) on the final ETT, with at least two ETT assessments at least 1 year apart.

The mean follow-up was 5.8 years (663,522 person-years), during which 18,302 deaths (19.7%) occurred, for an average annual mortality rate of 27.6 events per 1,000 person-years.

CRF was unchanged in 25.1% of the cohort, increased in 29.3%, and decreased in 45.6%. The trend was similar for those with and without CVD.

Significant differences were seen in all variables across CRF categories. In general, body weight, body mass index, CVD risk factors, and overall disease burden were progressively more unfavorable for those in the lowest CRF categories.

Conversely, medication use was progressively higher among those in low CRF categories.

After adjustment, higher CRF was inversely related to mortality risk for the entire cohort, with and without CVD. Cumulative survival rates across CRF categories declined progressively with increased fitness.

For patients with CVD (hazard ratio, 1.11), other significant predictors of all-cause mortality for patients were age (HR, 1.07), body mass index (HR, 0.98), chronic kidney disease (HR, 1.85), smoking (HR, 1.57), type 2 diabetes (HR, 1.42), hypertension (HR, 1.39), and cancers (HR, 1.37).

Generally, changes in CRF of at least 1.0 MET were associated with inverse and proportionate changes in mortality risk, regardless of baseline CRF status. For example, they note, a CRF decline of > 2.0 METs was associated with a 74% increased mortality risk for low-fit individuals with CVD, and a 69% increase for those without CVD.

A second analysis was done after excluding patients whose CRF declined and who died within 2 years of their last ETT, to account for the possibility that higher mortality rates and CRF declines were consequences of underlying disease (reverse causality). The association between changes in CRF and mortality risk persisted and remained similar to that observed in the entire cohort.

The authors add, “It is noteworthy that CRF increased by at least 1 MET in approximately 29% of the participants in the current study and decreased in approximately 46% of participants. This finding underscores the need to promote physical activity to maintain or increase CRF levels in middle-aged and older individuals.”

“Our findings make a persuasive argument that CRF is a strong and independent determinant of all-cause mortality risk, independent of genetic factors,” Dr. Kokkinos said. “We know that CRF is determined to some degree by genetic factors. However, improvements in aerobic capacity or CRF over time are largely the outcomes of regular engagement in aerobic activities of adequate intensity and volume.”

“Conversely,” he said, “a decline in CRF is likely the result of sedentary behavior, the onset of a chronic condition, or aging.”

If genetics were the sole contributor to mortality risk, then changes in CRF would not influence mortality risk, he concluded.
 

CRF impact “woefully underestimated”

Barry A. Franklin, PhD, past chair of both the American Heart Association’s Council on Physical Activity and Metabolism and the National Advocacy Committee, said the study substantiates previous smaller studies and is a “seminal” work.

“CRF is woefully underestimated as an index of health outcomes and survival,” said Dr. Franklin, director of preventive cardiology and cardiac rehabilitation at Beaumont Health in Royal Oak, Mich. “Moderate to vigorous physical activity should be regularly promoted by the medical community.”

Dr. Franklin’s recent review, published in Mayo Clinic Proceedings, provides evidence for other exercise benefits that clinicians may not be aware of, he noted. These include:

• Each 1 MET increase in CRF is generally associated with approximately 16% reduction in mortality.
• At any given risk factor profile or coronary calcium score, unfit people have 2-3 times the mortality as their fit counterparts.
• Fitness is inversely related to annual health care costs (each 1 MET increase in CRF is associated with approximately 6% lower annual health care costs).
• Physically active people hospitalized with acute coronary syndromes have better short-term outcomes (likely because of a phenomenon called ‘exercise preconditioning’).
• Fit people who undergo elective or emergent surgical procedures have better outcomes.
• Regular physical activity is a common characteristic in population subsets who routinely live into their 90s and to 100+.

Dr. Franklin had this advice for clinicians seeking to promote CRF increases of 1 MET or more among patients: “Sedentary people who embark on a walking program, who over time increase their walking speed to 3 mph or faster, invariably show at least a 1 MET increase in CRF during subsequent peak or symptom-limited treadmill testing.”

“Another general rule is that if an exercise program decreases heart rate at a given or fixed workload by about 10 beats per minute [bpm], the same treadmill workload that initially was accomplished at a heart rate of 120 bpm is now being accomplished at a heart rate of 110 bpm,” likely resulting in about a 1 MET increase in fitness.

“Accordingly,” he added, “a 20-bpm decrease would suggest a 2 MET increase in fitness!”

In a related editorial, Leonard A. Kaminsky, Ball State University, Muncie, Ind. and colleagues, write, “We agree with and believe the conclusion, reached by Kokkinos et al., bears repeating. We (again) call on both clinicians and public health professionals to adopt CRF as a key health indicator.”

“This should be done by coupling routine assessments of CRF with continued advocacy for promoting physical activity as an essential healthy lifestyle behavior,” they write.

No funding or relevant financial relationships were disclosed.

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

Even relatively small changes in cardiorespiratory fitness (CRF) are associated with “considerable” impact on clinical symptoms and mortality risk among individuals with and without cardiovascular disease, new observational data in United States veterans suggest.

“We had a few surprises,” Peter Kokkinos, PhD, Robert Wood Johnson Medical School, New Brunswick, N. J., and the VA Medical Center, Washington, told this news organization. “First, the mortality risk was greatly attenuated in those who were moderate- and high-fit at baseline, despite a decline in fitness over time. In fact, in those with no CVD, the risk was not significantly elevated even when CRF declined by at least one MET [metabolic equivalent of task] for the moderate-fit and two or more METs for the high-fit group.”

“Second,” he said, “Our findings suggest that the impact of CRF on human health is not ephemeral, but rather carries a certain protection over time. Third, the changes in CRF necessary to impact mortality risk are relatively small (> 1.0 METs). This has a substantial clinical and public health significance.”

The study was published online in the Journal of the American College of Cardiology.
 

CRF up, mortality risk down

Dr. Kokkinos and colleagues analyzed data from 93,060 U.S. veterans; of these, 95% were men (mean age, 61.4 years) and 5% were women (mean age, 57.1 years). Overall, 72% of participants were White; 19.8%, African American; 5.2%, Hispanic; 1.9%, Native American, Asian, or Hawaiian; and 1.2%, unknown.

Participants were assigned to age-specific fitness quartiles based on peak METs achieved on a baseline exercise treadmill test (ETT). Each CRF quartile was stratified based on CRF changes (increase, decrease, no change) on the final ETT, with at least two ETT assessments at least 1 year apart.

The mean follow-up was 5.8 years (663,522 person-years), during which 18,302 deaths (19.7%) occurred, for an average annual mortality rate of 27.6 events per 1,000 person-years.

CRF was unchanged in 25.1% of the cohort, increased in 29.3%, and decreased in 45.6%. The trend was similar for those with and without CVD.

Significant differences were seen in all variables across CRF categories. In general, body weight, body mass index, CVD risk factors, and overall disease burden were progressively more unfavorable for those in the lowest CRF categories.

Conversely, medication use was progressively higher among those in low CRF categories.

After adjustment, higher CRF was inversely related to mortality risk for the entire cohort, with and without CVD. Cumulative survival rates across CRF categories declined progressively with increased fitness.

For patients with CVD (hazard ratio, 1.11), other significant predictors of all-cause mortality for patients were age (HR, 1.07), body mass index (HR, 0.98), chronic kidney disease (HR, 1.85), smoking (HR, 1.57), type 2 diabetes (HR, 1.42), hypertension (HR, 1.39), and cancers (HR, 1.37).

Generally, changes in CRF of at least 1.0 MET were associated with inverse and proportionate changes in mortality risk, regardless of baseline CRF status. For example, they note, a CRF decline of > 2.0 METs was associated with a 74% increased mortality risk for low-fit individuals with CVD, and a 69% increase for those without CVD.

A second analysis was done after excluding patients whose CRF declined and who died within 2 years of their last ETT, to account for the possibility that higher mortality rates and CRF declines were consequences of underlying disease (reverse causality). The association between changes in CRF and mortality risk persisted and remained similar to that observed in the entire cohort.

The authors add, “It is noteworthy that CRF increased by at least 1 MET in approximately 29% of the participants in the current study and decreased in approximately 46% of participants. This finding underscores the need to promote physical activity to maintain or increase CRF levels in middle-aged and older individuals.”

“Our findings make a persuasive argument that CRF is a strong and independent determinant of all-cause mortality risk, independent of genetic factors,” Dr. Kokkinos said. “We know that CRF is determined to some degree by genetic factors. However, improvements in aerobic capacity or CRF over time are largely the outcomes of regular engagement in aerobic activities of adequate intensity and volume.”

“Conversely,” he said, “a decline in CRF is likely the result of sedentary behavior, the onset of a chronic condition, or aging.”

If genetics were the sole contributor to mortality risk, then changes in CRF would not influence mortality risk, he concluded.
 

CRF impact “woefully underestimated”

Barry A. Franklin, PhD, past chair of both the American Heart Association’s Council on Physical Activity and Metabolism and the National Advocacy Committee, said the study substantiates previous smaller studies and is a “seminal” work.

“CRF is woefully underestimated as an index of health outcomes and survival,” said Dr. Franklin, director of preventive cardiology and cardiac rehabilitation at Beaumont Health in Royal Oak, Mich. “Moderate to vigorous physical activity should be regularly promoted by the medical community.”

Dr. Franklin’s recent review, published in Mayo Clinic Proceedings, provides evidence for other exercise benefits that clinicians may not be aware of, he noted. These include:

• Each 1 MET increase in CRF is generally associated with approximately 16% reduction in mortality.
• At any given risk factor profile or coronary calcium score, unfit people have 2-3 times the mortality as their fit counterparts.
• Fitness is inversely related to annual health care costs (each 1 MET increase in CRF is associated with approximately 6% lower annual health care costs).
• Physically active people hospitalized with acute coronary syndromes have better short-term outcomes (likely because of a phenomenon called ‘exercise preconditioning’).
• Fit people who undergo elective or emergent surgical procedures have better outcomes.
• Regular physical activity is a common characteristic in population subsets who routinely live into their 90s and to 100+.

Dr. Franklin had this advice for clinicians seeking to promote CRF increases of 1 MET or more among patients: “Sedentary people who embark on a walking program, who over time increase their walking speed to 3 mph or faster, invariably show at least a 1 MET increase in CRF during subsequent peak or symptom-limited treadmill testing.”

“Another general rule is that if an exercise program decreases heart rate at a given or fixed workload by about 10 beats per minute [bpm], the same treadmill workload that initially was accomplished at a heart rate of 120 bpm is now being accomplished at a heart rate of 110 bpm,” likely resulting in about a 1 MET increase in fitness.

“Accordingly,” he added, “a 20-bpm decrease would suggest a 2 MET increase in fitness!”

In a related editorial, Leonard A. Kaminsky, Ball State University, Muncie, Ind. and colleagues, write, “We agree with and believe the conclusion, reached by Kokkinos et al., bears repeating. We (again) call on both clinicians and public health professionals to adopt CRF as a key health indicator.”

“This should be done by coupling routine assessments of CRF with continued advocacy for promoting physical activity as an essential healthy lifestyle behavior,” they write.

No funding or relevant financial relationships were disclosed.

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

Even relatively small changes in cardiorespiratory fitness (CRF) are associated with “considerable” impact on clinical symptoms and mortality risk among individuals with and without cardiovascular disease, new observational data in United States veterans suggest.

“We had a few surprises,” Peter Kokkinos, PhD, Robert Wood Johnson Medical School, New Brunswick, N. J., and the VA Medical Center, Washington, told this news organization. “First, the mortality risk was greatly attenuated in those who were moderate- and high-fit at baseline, despite a decline in fitness over time. In fact, in those with no CVD, the risk was not significantly elevated even when CRF declined by at least one MET [metabolic equivalent of task] for the moderate-fit and two or more METs for the high-fit group.”

“Second,” he said, “Our findings suggest that the impact of CRF on human health is not ephemeral, but rather carries a certain protection over time. Third, the changes in CRF necessary to impact mortality risk are relatively small (> 1.0 METs). This has a substantial clinical and public health significance.”

The study was published online in the Journal of the American College of Cardiology.
 

CRF up, mortality risk down

Dr. Kokkinos and colleagues analyzed data from 93,060 U.S. veterans; of these, 95% were men (mean age, 61.4 years) and 5% were women (mean age, 57.1 years). Overall, 72% of participants were White; 19.8%, African American; 5.2%, Hispanic; 1.9%, Native American, Asian, or Hawaiian; and 1.2%, unknown.

Participants were assigned to age-specific fitness quartiles based on peak METs achieved on a baseline exercise treadmill test (ETT). Each CRF quartile was stratified based on CRF changes (increase, decrease, no change) on the final ETT, with at least two ETT assessments at least 1 year apart.

The mean follow-up was 5.8 years (663,522 person-years), during which 18,302 deaths (19.7%) occurred, for an average annual mortality rate of 27.6 events per 1,000 person-years.

CRF was unchanged in 25.1% of the cohort, increased in 29.3%, and decreased in 45.6%. The trend was similar for those with and without CVD.

Significant differences were seen in all variables across CRF categories. In general, body weight, body mass index, CVD risk factors, and overall disease burden were progressively more unfavorable for those in the lowest CRF categories.

Conversely, medication use was progressively higher among those in low CRF categories.

After adjustment, higher CRF was inversely related to mortality risk for the entire cohort, with and without CVD. Cumulative survival rates across CRF categories declined progressively with increased fitness.

For patients with CVD (hazard ratio, 1.11), other significant predictors of all-cause mortality for patients were age (HR, 1.07), body mass index (HR, 0.98), chronic kidney disease (HR, 1.85), smoking (HR, 1.57), type 2 diabetes (HR, 1.42), hypertension (HR, 1.39), and cancers (HR, 1.37).

Generally, changes in CRF of at least 1.0 MET were associated with inverse and proportionate changes in mortality risk, regardless of baseline CRF status. For example, they note, a CRF decline of > 2.0 METs was associated with a 74% increased mortality risk for low-fit individuals with CVD, and a 69% increase for those without CVD.

A second analysis was done after excluding patients whose CRF declined and who died within 2 years of their last ETT, to account for the possibility that higher mortality rates and CRF declines were consequences of underlying disease (reverse causality). The association between changes in CRF and mortality risk persisted and remained similar to that observed in the entire cohort.

The authors add, “It is noteworthy that CRF increased by at least 1 MET in approximately 29% of the participants in the current study and decreased in approximately 46% of participants. This finding underscores the need to promote physical activity to maintain or increase CRF levels in middle-aged and older individuals.”

“Our findings make a persuasive argument that CRF is a strong and independent determinant of all-cause mortality risk, independent of genetic factors,” Dr. Kokkinos said. “We know that CRF is determined to some degree by genetic factors. However, improvements in aerobic capacity or CRF over time are largely the outcomes of regular engagement in aerobic activities of adequate intensity and volume.”

“Conversely,” he said, “a decline in CRF is likely the result of sedentary behavior, the onset of a chronic condition, or aging.”

If genetics were the sole contributor to mortality risk, then changes in CRF would not influence mortality risk, he concluded.
 

CRF impact “woefully underestimated”

Barry A. Franklin, PhD, past chair of both the American Heart Association’s Council on Physical Activity and Metabolism and the National Advocacy Committee, said the study substantiates previous smaller studies and is a “seminal” work.

“CRF is woefully underestimated as an index of health outcomes and survival,” said Dr. Franklin, director of preventive cardiology and cardiac rehabilitation at Beaumont Health in Royal Oak, Mich. “Moderate to vigorous physical activity should be regularly promoted by the medical community.”

Dr. Franklin’s recent review, published in Mayo Clinic Proceedings, provides evidence for other exercise benefits that clinicians may not be aware of, he noted. These include:

• Each 1 MET increase in CRF is generally associated with approximately 16% reduction in mortality.
• At any given risk factor profile or coronary calcium score, unfit people have 2-3 times the mortality as their fit counterparts.
• Fitness is inversely related to annual health care costs (each 1 MET increase in CRF is associated with approximately 6% lower annual health care costs).
• Physically active people hospitalized with acute coronary syndromes have better short-term outcomes (likely because of a phenomenon called ‘exercise preconditioning’).
• Fit people who undergo elective or emergent surgical procedures have better outcomes.
• Regular physical activity is a common characteristic in population subsets who routinely live into their 90s and to 100+.

Dr. Franklin had this advice for clinicians seeking to promote CRF increases of 1 MET or more among patients: “Sedentary people who embark on a walking program, who over time increase their walking speed to 3 mph or faster, invariably show at least a 1 MET increase in CRF during subsequent peak or symptom-limited treadmill testing.”

“Another general rule is that if an exercise program decreases heart rate at a given or fixed workload by about 10 beats per minute [bpm], the same treadmill workload that initially was accomplished at a heart rate of 120 bpm is now being accomplished at a heart rate of 110 bpm,” likely resulting in about a 1 MET increase in fitness.

“Accordingly,” he added, “a 20-bpm decrease would suggest a 2 MET increase in fitness!”

In a related editorial, Leonard A. Kaminsky, Ball State University, Muncie, Ind. and colleagues, write, “We agree with and believe the conclusion, reached by Kokkinos et al., bears repeating. We (again) call on both clinicians and public health professionals to adopt CRF as a key health indicator.”

“This should be done by coupling routine assessments of CRF with continued advocacy for promoting physical activity as an essential healthy lifestyle behavior,” they write.

No funding or relevant financial relationships were disclosed.

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

Sports-related sudden cardiac arrest (Sr-SCA) appears to be extremely rare in women, compared with men, despite similar characteristics and circumstances of occurrence, data from three European population-based registries suggest.

“Our study shows that cardiac arrest during sports activities is up to 13 times less frequent in women, which means that the risk of sports-related cardiac arrest is substantially lower in women than in men. This tighter risk is consistent across all age subgroups and registries,” Orianne Weizman, MD, MPH, Université Paris Cité, said in an interview.

“Even if it is a nonconsensual suggestion, the question of risk-adapted screening in women must be asked,” Dr. Weizman and colleagues propose.

Their study was published online  in the Journal of the American College of Cardiology.
 

Annual incidence

Among 34,826 cases of SCA in the registries that occurred in adults between 2006 and 2017, 760 (2.2%) were related to sports, and the vast majority occurred in men (706, 92.9%). Only 54 (7.1%) occurred in women.

Viktor Cap/Thinkstock

Overall, the average annual incidence of Sr-SCA in women was 0.19 per million, compared with 2.63 per million in men (P < .0001).

When extrapolating to the total European population and accounting for age and sex, this translates into 98 expected cases of Sr-SCA each year in women versus 1,350 cases annually in men.

The average age of Sr-SCA was similar in women and men (59 years). Most cases occurred during moderate-vigorous physical activity, although data on the types of sports and time spent on sports per week or month were not defined.

However, the investigators note that women with Sr-SCA were more likely than men to be engaged in light or moderate physical activity at the time of arrest (17.5% vs. 4.2%) – suggesting a potential higher propensity for women to present with SCA at moderate workloads.

The incidence of Sr-SCA increased only slightly in postmenopausal women, while there was an 8-fold increase in men aged 60-74 years, relative to peers younger than 40 years.

History of heart disease was relatively uncommon in both men and women. Previous myocardial infarction was the most frequent preexisting condition in men (26.8%), whereas nonischemic heart disease (cardiomyopathy and valvular heart disease) was more frequent among women (29.0%).

Cardiovascular risk factors were frequently present in both men and women, with at least one factor present in two-thirds of the patients, regardless of sex.

Pulseless electrical activity and asystole were more common in women than in men (40.7% vs. 19.1%), as has been shown in previous studies of resuscitation from SCA in the general population. Ventricular tachycardia or fibrillation was the initial rhythm in 80.9% of men and 59.3% of women.

The cause of SCA was MI in 31.4% of women and 29.0% of men. Other cases were related to dilated cardiomyopathy (5.6% in women, 1.8% in men) or hypertrophic cardiomyopathy (1.9% in women, 1.3% in men). Electrical heart disease was found in two women (3.7%) and 15 men (2.1%).

In most cases (86%), one or more witnesses were present and assisted after the collapse. There was no significant difference between men and women in bystander response, time to defibrillation, and survival, which approached 60% at hospital discharge with early bystander cardiorespiratory resuscitation and automatic external defibrillator use.

A limitation of the study is a predominantly White European population, meaning that the findings may not be extrapolated to other populations.
 

Tailored screening?

“These findings raise questions about the causes of this extremely low risk, which are not yet clear, and the extent to which we should revise our pre-sport screening methods,” Dr. Weizman told this news organization.

“We suggest that extensive, routinely conducted screening in women would not be cost-effective because of the extremely rare incidence of serious events,” Dr. Weizman said.

What’s lacking, however, is sport-specific data on whether specific activities (endurance or resistance) would be more risky for women. Further information, particularly on the sports at highest risk for Sr-SCA in women, is needed to propose tailor-made screening algorithms, Dr. Weizman noted.

The value of preparticipation screening for occult heart disease beyond the history and physical examination has been debated, with some organizations recommending electrocardiogram in addition to baseline assessments.

But this can lead to false-positives, “with the anxiety and cost associated with additional testing,” Anne Curtis, MD, State University of New York at Buffalo, Buffalo General Medical Center, and Jan Tijssen, PhD, University of Amsterdam, write in a linked editorial.

Currently, the American Heart Association recommends screening before sports participation, with a focused personal and family history and physical examination.

Dr. Curtis told this news organization that the U.S. guidelines “should stay as they are, but if one were to change them, it would be important to recognize that male athletes are much more likely to suffer arrhythmic events during sports than female athletes.”

“That to me means that female athletes in particular should not need to have ECGs prior to sports participation unless the history and physical examination detects a potential problem that needs further investigation,” Dr. Curtis said.

“Both women and men should be screened for cardiovascular risk factors during routine primary care, with appropriate interventions for hypertension, hyperlipidemia, smoking, and other risk factors,” Dr. Curtis and Dr. Tijssen advise in their editorial.

“In asymptomatic individuals who wish to become more active, in most cases they should be given the green light to proceed, starting slow and increasing intensity/duration over time, without specific additional testing. This advice is particularly relevant for women, given the findings of the current and prior studies,” they add.

This research was funded by Horizon 2020 and COST Action PARQ, supported by the European Cooperation in Science and Technology. Additional support was provided by INSERM, University of Paris, Assistance Publique-Hôpitaux de Paris, Fondation Coeur et Artères, Global Heart Watch, Fédération Française de Cardiologie, Société Française de Cardiologie, Fondation Recherche Medicale, as well as unrestricted grants from industrial partners. The authors and Dr. Tijssen have declared no relevant financial relationships. Dr. Curtis has disclosed relationships with Janssen several pharmaceutical companies.

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

Sports-related sudden cardiac arrest (Sr-SCA) appears to be extremely rare in women, compared with men, despite similar characteristics and circumstances of occurrence, data from three European population-based registries suggest.

“Our study shows that cardiac arrest during sports activities is up to 13 times less frequent in women, which means that the risk of sports-related cardiac arrest is substantially lower in women than in men. This tighter risk is consistent across all age subgroups and registries,” Orianne Weizman, MD, MPH, Université Paris Cité, said in an interview.

“Even if it is a nonconsensual suggestion, the question of risk-adapted screening in women must be asked,” Dr. Weizman and colleagues propose.

Their study was published online  in the Journal of the American College of Cardiology.
 

Annual incidence

Among 34,826 cases of SCA in the registries that occurred in adults between 2006 and 2017, 760 (2.2%) were related to sports, and the vast majority occurred in men (706, 92.9%). Only 54 (7.1%) occurred in women.

Viktor Cap/Thinkstock

Overall, the average annual incidence of Sr-SCA in women was 0.19 per million, compared with 2.63 per million in men (P < .0001).

When extrapolating to the total European population and accounting for age and sex, this translates into 98 expected cases of Sr-SCA each year in women versus 1,350 cases annually in men.

The average age of Sr-SCA was similar in women and men (59 years). Most cases occurred during moderate-vigorous physical activity, although data on the types of sports and time spent on sports per week or month were not defined.

However, the investigators note that women with Sr-SCA were more likely than men to be engaged in light or moderate physical activity at the time of arrest (17.5% vs. 4.2%) – suggesting a potential higher propensity for women to present with SCA at moderate workloads.

The incidence of Sr-SCA increased only slightly in postmenopausal women, while there was an 8-fold increase in men aged 60-74 years, relative to peers younger than 40 years.

History of heart disease was relatively uncommon in both men and women. Previous myocardial infarction was the most frequent preexisting condition in men (26.8%), whereas nonischemic heart disease (cardiomyopathy and valvular heart disease) was more frequent among women (29.0%).

Cardiovascular risk factors were frequently present in both men and women, with at least one factor present in two-thirds of the patients, regardless of sex.

Pulseless electrical activity and asystole were more common in women than in men (40.7% vs. 19.1%), as has been shown in previous studies of resuscitation from SCA in the general population. Ventricular tachycardia or fibrillation was the initial rhythm in 80.9% of men and 59.3% of women.

The cause of SCA was MI in 31.4% of women and 29.0% of men. Other cases were related to dilated cardiomyopathy (5.6% in women, 1.8% in men) or hypertrophic cardiomyopathy (1.9% in women, 1.3% in men). Electrical heart disease was found in two women (3.7%) and 15 men (2.1%).

In most cases (86%), one or more witnesses were present and assisted after the collapse. There was no significant difference between men and women in bystander response, time to defibrillation, and survival, which approached 60% at hospital discharge with early bystander cardiorespiratory resuscitation and automatic external defibrillator use.

A limitation of the study is a predominantly White European population, meaning that the findings may not be extrapolated to other populations.
 

Tailored screening?

“These findings raise questions about the causes of this extremely low risk, which are not yet clear, and the extent to which we should revise our pre-sport screening methods,” Dr. Weizman told this news organization.

“We suggest that extensive, routinely conducted screening in women would not be cost-effective because of the extremely rare incidence of serious events,” Dr. Weizman said.

What’s lacking, however, is sport-specific data on whether specific activities (endurance or resistance) would be more risky for women. Further information, particularly on the sports at highest risk for Sr-SCA in women, is needed to propose tailor-made screening algorithms, Dr. Weizman noted.

The value of preparticipation screening for occult heart disease beyond the history and physical examination has been debated, with some organizations recommending electrocardiogram in addition to baseline assessments.

But this can lead to false-positives, “with the anxiety and cost associated with additional testing,” Anne Curtis, MD, State University of New York at Buffalo, Buffalo General Medical Center, and Jan Tijssen, PhD, University of Amsterdam, write in a linked editorial.

Currently, the American Heart Association recommends screening before sports participation, with a focused personal and family history and physical examination.

Dr. Curtis told this news organization that the U.S. guidelines “should stay as they are, but if one were to change them, it would be important to recognize that male athletes are much more likely to suffer arrhythmic events during sports than female athletes.”

“That to me means that female athletes in particular should not need to have ECGs prior to sports participation unless the history and physical examination detects a potential problem that needs further investigation,” Dr. Curtis said.

“Both women and men should be screened for cardiovascular risk factors during routine primary care, with appropriate interventions for hypertension, hyperlipidemia, smoking, and other risk factors,” Dr. Curtis and Dr. Tijssen advise in their editorial.

“In asymptomatic individuals who wish to become more active, in most cases they should be given the green light to proceed, starting slow and increasing intensity/duration over time, without specific additional testing. This advice is particularly relevant for women, given the findings of the current and prior studies,” they add.

This research was funded by Horizon 2020 and COST Action PARQ, supported by the European Cooperation in Science and Technology. Additional support was provided by INSERM, University of Paris, Assistance Publique-Hôpitaux de Paris, Fondation Coeur et Artères, Global Heart Watch, Fédération Française de Cardiologie, Société Française de Cardiologie, Fondation Recherche Medicale, as well as unrestricted grants from industrial partners. The authors and Dr. Tijssen have declared no relevant financial relationships. Dr. Curtis has disclosed relationships with Janssen several pharmaceutical companies.

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

Sports-related sudden cardiac arrest (Sr-SCA) appears to be extremely rare in women, compared with men, despite similar characteristics and circumstances of occurrence, data from three European population-based registries suggest.

“Our study shows that cardiac arrest during sports activities is up to 13 times less frequent in women, which means that the risk of sports-related cardiac arrest is substantially lower in women than in men. This tighter risk is consistent across all age subgroups and registries,” Orianne Weizman, MD, MPH, Université Paris Cité, said in an interview.

“Even if it is a nonconsensual suggestion, the question of risk-adapted screening in women must be asked,” Dr. Weizman and colleagues propose.

Their study was published online  in the Journal of the American College of Cardiology.
 

Annual incidence

Among 34,826 cases of SCA in the registries that occurred in adults between 2006 and 2017, 760 (2.2%) were related to sports, and the vast majority occurred in men (706, 92.9%). Only 54 (7.1%) occurred in women.

Viktor Cap/Thinkstock

Overall, the average annual incidence of Sr-SCA in women was 0.19 per million, compared with 2.63 per million in men (P < .0001).

When extrapolating to the total European population and accounting for age and sex, this translates into 98 expected cases of Sr-SCA each year in women versus 1,350 cases annually in men.

The average age of Sr-SCA was similar in women and men (59 years). Most cases occurred during moderate-vigorous physical activity, although data on the types of sports and time spent on sports per week or month were not defined.

However, the investigators note that women with Sr-SCA were more likely than men to be engaged in light or moderate physical activity at the time of arrest (17.5% vs. 4.2%) – suggesting a potential higher propensity for women to present with SCA at moderate workloads.

The incidence of Sr-SCA increased only slightly in postmenopausal women, while there was an 8-fold increase in men aged 60-74 years, relative to peers younger than 40 years.

History of heart disease was relatively uncommon in both men and women. Previous myocardial infarction was the most frequent preexisting condition in men (26.8%), whereas nonischemic heart disease (cardiomyopathy and valvular heart disease) was more frequent among women (29.0%).

Cardiovascular risk factors were frequently present in both men and women, with at least one factor present in two-thirds of the patients, regardless of sex.

Pulseless electrical activity and asystole were more common in women than in men (40.7% vs. 19.1%), as has been shown in previous studies of resuscitation from SCA in the general population. Ventricular tachycardia or fibrillation was the initial rhythm in 80.9% of men and 59.3% of women.

The cause of SCA was MI in 31.4% of women and 29.0% of men. Other cases were related to dilated cardiomyopathy (5.6% in women, 1.8% in men) or hypertrophic cardiomyopathy (1.9% in women, 1.3% in men). Electrical heart disease was found in two women (3.7%) and 15 men (2.1%).

In most cases (86%), one or more witnesses were present and assisted after the collapse. There was no significant difference between men and women in bystander response, time to defibrillation, and survival, which approached 60% at hospital discharge with early bystander cardiorespiratory resuscitation and automatic external defibrillator use.

A limitation of the study is a predominantly White European population, meaning that the findings may not be extrapolated to other populations.
 

Tailored screening?

“These findings raise questions about the causes of this extremely low risk, which are not yet clear, and the extent to which we should revise our pre-sport screening methods,” Dr. Weizman told this news organization.

“We suggest that extensive, routinely conducted screening in women would not be cost-effective because of the extremely rare incidence of serious events,” Dr. Weizman said.

What’s lacking, however, is sport-specific data on whether specific activities (endurance or resistance) would be more risky for women. Further information, particularly on the sports at highest risk for Sr-SCA in women, is needed to propose tailor-made screening algorithms, Dr. Weizman noted.

The value of preparticipation screening for occult heart disease beyond the history and physical examination has been debated, with some organizations recommending electrocardiogram in addition to baseline assessments.

But this can lead to false-positives, “with the anxiety and cost associated with additional testing,” Anne Curtis, MD, State University of New York at Buffalo, Buffalo General Medical Center, and Jan Tijssen, PhD, University of Amsterdam, write in a linked editorial.

Currently, the American Heart Association recommends screening before sports participation, with a focused personal and family history and physical examination.

Dr. Curtis told this news organization that the U.S. guidelines “should stay as they are, but if one were to change them, it would be important to recognize that male athletes are much more likely to suffer arrhythmic events during sports than female athletes.”

“That to me means that female athletes in particular should not need to have ECGs prior to sports participation unless the history and physical examination detects a potential problem that needs further investigation,” Dr. Curtis said.

“Both women and men should be screened for cardiovascular risk factors during routine primary care, with appropriate interventions for hypertension, hyperlipidemia, smoking, and other risk factors,” Dr. Curtis and Dr. Tijssen advise in their editorial.

“In asymptomatic individuals who wish to become more active, in most cases they should be given the green light to proceed, starting slow and increasing intensity/duration over time, without specific additional testing. This advice is particularly relevant for women, given the findings of the current and prior studies,” they add.

This research was funded by Horizon 2020 and COST Action PARQ, supported by the European Cooperation in Science and Technology. Additional support was provided by INSERM, University of Paris, Assistance Publique-Hôpitaux de Paris, Fondation Coeur et Artères, Global Heart Watch, Fédération Française de Cardiologie, Société Française de Cardiologie, Fondation Recherche Medicale, as well as unrestricted grants from industrial partners. The authors and Dr. Tijssen have declared no relevant financial relationships. Dr. Curtis has disclosed relationships with Janssen several pharmaceutical companies.

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

The U.S. Food and Drug Administration has expanded the indicated age range for evinacumab-dgnb (Evkeeza, Regeneron Pharmaceuticals), which was approved 2 years ago as an adjunct to other lipid-lowering therapies for homozygous familial hypercholesterolemia (HoFH) in patients aged 12 and older.

Olivier Le Moal/Getty Images

The antibody-based agent’s indication now also covers patients aged 5-11 years with the rare genetic disorder, Regeneron announced. It blocks angiopoietin-like 3 (ANGPTL3), inhibiting lipoprotein lipase and endothelial lipase, thereby cutting LDL-cholesterol levels by mechanisms not directly involving the LDL receptor.

The expanded indication is based on a study that saw a 48% drop in LDL-cholesterol levels over 24 weeks, the primary endpoint, across 20 HoFH patients aged 5-11 years who received evinacumab-dgnb on top of maximally tolerated standard lipid-modifying therapy, the company reports.

Levels of apolipoprotein B, non-HDL cholesterol, and total cholesterol also fell significantly in the trial, which was completed in January.

The drug’s efficacy and safety resembled those of a previously reported larger study of patients with HoFH aged 12 years and older (mean age about 40 years) that led to its initial approval.

“The safety and effectiveness of Evkeeza have not been established in patients with other causes of hypercholesterolemia, including those with heterozygous familial hypercholesterolemia,” the company states. Nor is it known whether the drug affects clinical outcomes.

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

The U.S. Food and Drug Administration has expanded the indicated age range for evinacumab-dgnb (Evkeeza, Regeneron Pharmaceuticals), which was approved 2 years ago as an adjunct to other lipid-lowering therapies for homozygous familial hypercholesterolemia (HoFH) in patients aged 12 and older.

Olivier Le Moal/Getty Images

The antibody-based agent’s indication now also covers patients aged 5-11 years with the rare genetic disorder, Regeneron announced. It blocks angiopoietin-like 3 (ANGPTL3), inhibiting lipoprotein lipase and endothelial lipase, thereby cutting LDL-cholesterol levels by mechanisms not directly involving the LDL receptor.

The expanded indication is based on a study that saw a 48% drop in LDL-cholesterol levels over 24 weeks, the primary endpoint, across 20 HoFH patients aged 5-11 years who received evinacumab-dgnb on top of maximally tolerated standard lipid-modifying therapy, the company reports.

Levels of apolipoprotein B, non-HDL cholesterol, and total cholesterol also fell significantly in the trial, which was completed in January.

The drug’s efficacy and safety resembled those of a previously reported larger study of patients with HoFH aged 12 years and older (mean age about 40 years) that led to its initial approval.

“The safety and effectiveness of Evkeeza have not been established in patients with other causes of hypercholesterolemia, including those with heterozygous familial hypercholesterolemia,” the company states. Nor is it known whether the drug affects clinical outcomes.

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

The U.S. Food and Drug Administration has expanded the indicated age range for evinacumab-dgnb (Evkeeza, Regeneron Pharmaceuticals), which was approved 2 years ago as an adjunct to other lipid-lowering therapies for homozygous familial hypercholesterolemia (HoFH) in patients aged 12 and older.

Olivier Le Moal/Getty Images

The antibody-based agent’s indication now also covers patients aged 5-11 years with the rare genetic disorder, Regeneron announced. It blocks angiopoietin-like 3 (ANGPTL3), inhibiting lipoprotein lipase and endothelial lipase, thereby cutting LDL-cholesterol levels by mechanisms not directly involving the LDL receptor.

The expanded indication is based on a study that saw a 48% drop in LDL-cholesterol levels over 24 weeks, the primary endpoint, across 20 HoFH patients aged 5-11 years who received evinacumab-dgnb on top of maximally tolerated standard lipid-modifying therapy, the company reports.

Levels of apolipoprotein B, non-HDL cholesterol, and total cholesterol also fell significantly in the trial, which was completed in January.

The drug’s efficacy and safety resembled those of a previously reported larger study of patients with HoFH aged 12 years and older (mean age about 40 years) that led to its initial approval.

“The safety and effectiveness of Evkeeza have not been established in patients with other causes of hypercholesterolemia, including those with heterozygous familial hypercholesterolemia,” the company states. Nor is it known whether the drug affects clinical outcomes.

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

“Just Do It” is a cute marketing slogan. But let’s face it: Clinically, it doesn’t work well. Most people just don’t exercise. The recommended amount of weekly physical activity is 2.5 hours (150 minutes), but less than half of adults over 18 meet the guidelines for aerobic exercise, according to recent data from the Centers for Disease Control and Prevention.

Furthermore, when surveyed about aerobic exercise and strength training, only 24.6% meet these weekly recommendations. These low rates of physical activity are alarming, given the immense benefits of exercise in improving mental and physical health and well-being.

Many people know that exercise is good for them but struggle to go workout consistently. I know firsthand how challenging this can be. In addition to being an integrative obesity specialist, I have gone from 0 minutes of physical activity in 2014 to becoming a fitness enthusiast who’s run more than 5,300 miles over 8 years. I know that as doctors and clinicians, we can profoundly influence our patients’ exercise journey.

Here are five tips to help motivate your patients make the change from “I Won’t Do It” to “I’m Doing It.”
 

Tip 1: ‘[Clinician], heal thyself’

Data don’t lie. Doctors who move more are more likely to counsel patients on exercise. I’ve been the doctor on both sides of the exercise spectrum. At my heaviest weight and lowest physical activity level, I felt hypocritical counseling patients on exercise.

If and when I counseled my patients on exercise, it was very directive and impersonal. When I started running consistently, I went to the opposite end of the spectrum. In my running zeal, it took a while for me to understand that not everyone wants to run dozens of miles a week. Shocking! Some people can’t handle intense workouts. The “I did it so you can too” perspective wasn’t helpful for long-term change in most patients.

What has been beneficial is recalling the obstacles and emotions I had (and still have) with staying consistent with physical activity. When physicians and clinicians move regularly, we’re more equipped to give our patients genuine counseling based on practicality rather than theory.

Now that self-reflection has been addressed, let’s get to patient counseling.
 

Tip 2: Motivate, don’t berate

Lectures on why patients should exercise are less helpful than asking, “Why aren›t you able to exercise more often?”

Asking open-ended questions is essential in motivational interviewing. Motivational interviewing promotes behavioral change through collaborative conversation.

Instead of telling the patient what to do, motivational interviewing seeks to establish a person’s why and create an effective plan based on their motivation. Asking open-ended questions is also helpful in determining any challenges to regular exercise, rather than calling these challenges “excuses,” which can be counterproductive.

I encourage patients to embrace challenges as opportunities for improvement. If they say: “I can’t find time to work out,” I suggest that they create time to work out by walking 10-15 minutes during lunch or after dinner. The information gleaned from open-ended questions helps set practical SMARTER goals, which we will discuss next.

Tip 3: Set SMARTER goals

After assessing the patient’s motivation and barriers, use this information to transform their desire to change into an actionable plan through a SMARTER goal. SMARTER stands for Specific, Measurable, Attainable, Relevant, Time-Sensitive, Enjoyable, and Rewarding. Practical goals have each of these components. That’s why “Just Do It” or even “Exercise 150 minutes a week” isn’t a clear path for actionable change. SMARTER goals go beyond what to do and help people personalize how to change.

For example, the SMARTER version of “exercise 150 minutes a week” for a busy person who works 50 hours a week may look like this: “My goal is to incorporate 150 minutes of physical activity through 60 minutes of aerobic exercise Monday through Friday (20-minute lunch walks) and 90 minutes of combination resistance training on the weekend (two 45-minute sessions) while listening to my favorite music. To meet my goal, I will reward myself by calling a friend to catch up or buy myself a new workout outfit.”

Exercise prescriptions are another helpful way to empower patients with a realistic exercise strategy. In my practice, I developed my own exercise prescription which focuses on overcoming time barriers to exercise and finding personally enjoyable exercises. To enhance self-directed physical activity, I›ve found it useful to have patients complete part of the “exercise prescription” on their own before or after their visit.
 

Tip 4: Use accountability tools

Making a SMARTER goal is one thing, but sticking with it takes regular reinforcement. Even with the best plan, once patients leave the office, there are many distractions from their goals. Accountability is the secret sauce to cultivating consistency. Fitness trackers are an affordable form of accountability. Studies show that wearing a fitness tracker can help people get up to 40 minutes of extra walking, compared with people who don’t wear trackers.

Additionally, clinicians can use different ways to offer exercise accountability. For example, more frequent check-ins, individually or in groups, can be helpful. The increase in telehealth has made interval visits easier. Reimbursement and time can limit clinician-level accountability, however. Other options are referring patients to online support groups or programs sponsored by the government or organizations. For years, I coled a Walk With a Doc chapter in Richmond, Va. There are chapters throughout the country.
 

Tip 5: Prepare and PLAN for setbacks

Breaking news: Most plans don’t go quite as envisioned. Accounting for the potential of setbacks early on helps patients set realistic expectations. As physicians and clinicians, we can help our patients anticipate a few likely obstacles. This may lessen the impact when a setback occurs. Also, it’s helpful to have the patient prepare for a setback with a PLAN for recovering quickly. PLAN stands for Ponder what happened; Learn from it; Adjust the original goal; Now get back on track. Getting back on track as soon as possible is important to keep patients motivated and prevent muscle deconditioning.

Exercise is medicine. Physical inactivity is a leading contributor to many preventable diseases. Although the physical activity statistics are disappointing, improvement is possible. Many systemic changes are needed to increase physical activity on a population level.

While waiting for more extensive changes, we have the power to equip patients with personalized, actionable tools for improving and maintaining physical activity.

We can transform one person at a time through our clinical encounters. Let’s use effective tools to help patients shift from “I Won’t Do It” to “I’m Doing It.”

Sylvia Gonsahn-Bollie, MD, DipABOM, is an integrative obesity specialist focused on individualized solutions for emotional and biological overeating. Her bestselling book, “Embrace You: Your Guide to Transforming Weight Loss Misconceptions Into Lifelong Wellness,” was Healthline.com’s Best Overall Weight Loss Book of 2022 and one of Livestrong.com’s 8 Best Weight-Loss Books to Read in 2022. She reported no conflicts of interest.
 

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

“Just Do It” is a cute marketing slogan. But let’s face it: Clinically, it doesn’t work well. Most people just don’t exercise. The recommended amount of weekly physical activity is 2.5 hours (150 minutes), but less than half of adults over 18 meet the guidelines for aerobic exercise, according to recent data from the Centers for Disease Control and Prevention.

Furthermore, when surveyed about aerobic exercise and strength training, only 24.6% meet these weekly recommendations. These low rates of physical activity are alarming, given the immense benefits of exercise in improving mental and physical health and well-being.

Many people know that exercise is good for them but struggle to go workout consistently. I know firsthand how challenging this can be. In addition to being an integrative obesity specialist, I have gone from 0 minutes of physical activity in 2014 to becoming a fitness enthusiast who’s run more than 5,300 miles over 8 years. I know that as doctors and clinicians, we can profoundly influence our patients’ exercise journey.

Here are five tips to help motivate your patients make the change from “I Won’t Do It” to “I’m Doing It.”
 

Tip 1: ‘[Clinician], heal thyself’

Data don’t lie. Doctors who move more are more likely to counsel patients on exercise. I’ve been the doctor on both sides of the exercise spectrum. At my heaviest weight and lowest physical activity level, I felt hypocritical counseling patients on exercise.

If and when I counseled my patients on exercise, it was very directive and impersonal. When I started running consistently, I went to the opposite end of the spectrum. In my running zeal, it took a while for me to understand that not everyone wants to run dozens of miles a week. Shocking! Some people can’t handle intense workouts. The “I did it so you can too” perspective wasn’t helpful for long-term change in most patients.

What has been beneficial is recalling the obstacles and emotions I had (and still have) with staying consistent with physical activity. When physicians and clinicians move regularly, we’re more equipped to give our patients genuine counseling based on practicality rather than theory.

Now that self-reflection has been addressed, let’s get to patient counseling.
 

Tip 2: Motivate, don’t berate

Lectures on why patients should exercise are less helpful than asking, “Why aren›t you able to exercise more often?”

Asking open-ended questions is essential in motivational interviewing. Motivational interviewing promotes behavioral change through collaborative conversation.

Instead of telling the patient what to do, motivational interviewing seeks to establish a person’s why and create an effective plan based on their motivation. Asking open-ended questions is also helpful in determining any challenges to regular exercise, rather than calling these challenges “excuses,” which can be counterproductive.

I encourage patients to embrace challenges as opportunities for improvement. If they say: “I can’t find time to work out,” I suggest that they create time to work out by walking 10-15 minutes during lunch or after dinner. The information gleaned from open-ended questions helps set practical SMARTER goals, which we will discuss next.

Tip 3: Set SMARTER goals

After assessing the patient’s motivation and barriers, use this information to transform their desire to change into an actionable plan through a SMARTER goal. SMARTER stands for Specific, Measurable, Attainable, Relevant, Time-Sensitive, Enjoyable, and Rewarding. Practical goals have each of these components. That’s why “Just Do It” or even “Exercise 150 minutes a week” isn’t a clear path for actionable change. SMARTER goals go beyond what to do and help people personalize how to change.

For example, the SMARTER version of “exercise 150 minutes a week” for a busy person who works 50 hours a week may look like this: “My goal is to incorporate 150 minutes of physical activity through 60 minutes of aerobic exercise Monday through Friday (20-minute lunch walks) and 90 minutes of combination resistance training on the weekend (two 45-minute sessions) while listening to my favorite music. To meet my goal, I will reward myself by calling a friend to catch up or buy myself a new workout outfit.”

Exercise prescriptions are another helpful way to empower patients with a realistic exercise strategy. In my practice, I developed my own exercise prescription which focuses on overcoming time barriers to exercise and finding personally enjoyable exercises. To enhance self-directed physical activity, I›ve found it useful to have patients complete part of the “exercise prescription” on their own before or after their visit.
 

Tip 4: Use accountability tools

Making a SMARTER goal is one thing, but sticking with it takes regular reinforcement. Even with the best plan, once patients leave the office, there are many distractions from their goals. Accountability is the secret sauce to cultivating consistency. Fitness trackers are an affordable form of accountability. Studies show that wearing a fitness tracker can help people get up to 40 minutes of extra walking, compared with people who don’t wear trackers.

Additionally, clinicians can use different ways to offer exercise accountability. For example, more frequent check-ins, individually or in groups, can be helpful. The increase in telehealth has made interval visits easier. Reimbursement and time can limit clinician-level accountability, however. Other options are referring patients to online support groups or programs sponsored by the government or organizations. For years, I coled a Walk With a Doc chapter in Richmond, Va. There are chapters throughout the country.
 

Tip 5: Prepare and PLAN for setbacks

Breaking news: Most plans don’t go quite as envisioned. Accounting for the potential of setbacks early on helps patients set realistic expectations. As physicians and clinicians, we can help our patients anticipate a few likely obstacles. This may lessen the impact when a setback occurs. Also, it’s helpful to have the patient prepare for a setback with a PLAN for recovering quickly. PLAN stands for Ponder what happened; Learn from it; Adjust the original goal; Now get back on track. Getting back on track as soon as possible is important to keep patients motivated and prevent muscle deconditioning.

Exercise is medicine. Physical inactivity is a leading contributor to many preventable diseases. Although the physical activity statistics are disappointing, improvement is possible. Many systemic changes are needed to increase physical activity on a population level.

While waiting for more extensive changes, we have the power to equip patients with personalized, actionable tools for improving and maintaining physical activity.

We can transform one person at a time through our clinical encounters. Let’s use effective tools to help patients shift from “I Won’t Do It” to “I’m Doing It.”

Sylvia Gonsahn-Bollie, MD, DipABOM, is an integrative obesity specialist focused on individualized solutions for emotional and biological overeating. Her bestselling book, “Embrace You: Your Guide to Transforming Weight Loss Misconceptions Into Lifelong Wellness,” was Healthline.com’s Best Overall Weight Loss Book of 2022 and one of Livestrong.com’s 8 Best Weight-Loss Books to Read in 2022. She reported no conflicts of interest.
 

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

“Just Do It” is a cute marketing slogan. But let’s face it: Clinically, it doesn’t work well. Most people just don’t exercise. The recommended amount of weekly physical activity is 2.5 hours (150 minutes), but less than half of adults over 18 meet the guidelines for aerobic exercise, according to recent data from the Centers for Disease Control and Prevention.

Furthermore, when surveyed about aerobic exercise and strength training, only 24.6% meet these weekly recommendations. These low rates of physical activity are alarming, given the immense benefits of exercise in improving mental and physical health and well-being.

Many people know that exercise is good for them but struggle to go workout consistently. I know firsthand how challenging this can be. In addition to being an integrative obesity specialist, I have gone from 0 minutes of physical activity in 2014 to becoming a fitness enthusiast who’s run more than 5,300 miles over 8 years. I know that as doctors and clinicians, we can profoundly influence our patients’ exercise journey.

Here are five tips to help motivate your patients make the change from “I Won’t Do It” to “I’m Doing It.”
 

Tip 1: ‘[Clinician], heal thyself’

Data don’t lie. Doctors who move more are more likely to counsel patients on exercise. I’ve been the doctor on both sides of the exercise spectrum. At my heaviest weight and lowest physical activity level, I felt hypocritical counseling patients on exercise.

If and when I counseled my patients on exercise, it was very directive and impersonal. When I started running consistently, I went to the opposite end of the spectrum. In my running zeal, it took a while for me to understand that not everyone wants to run dozens of miles a week. Shocking! Some people can’t handle intense workouts. The “I did it so you can too” perspective wasn’t helpful for long-term change in most patients.

What has been beneficial is recalling the obstacles and emotions I had (and still have) with staying consistent with physical activity. When physicians and clinicians move regularly, we’re more equipped to give our patients genuine counseling based on practicality rather than theory.

Now that self-reflection has been addressed, let’s get to patient counseling.
 

Tip 2: Motivate, don’t berate

Lectures on why patients should exercise are less helpful than asking, “Why aren›t you able to exercise more often?”

Asking open-ended questions is essential in motivational interviewing. Motivational interviewing promotes behavioral change through collaborative conversation.

Instead of telling the patient what to do, motivational interviewing seeks to establish a person’s why and create an effective plan based on their motivation. Asking open-ended questions is also helpful in determining any challenges to regular exercise, rather than calling these challenges “excuses,” which can be counterproductive.

I encourage patients to embrace challenges as opportunities for improvement. If they say: “I can’t find time to work out,” I suggest that they create time to work out by walking 10-15 minutes during lunch or after dinner. The information gleaned from open-ended questions helps set practical SMARTER goals, which we will discuss next.

Tip 3: Set SMARTER goals

After assessing the patient’s motivation and barriers, use this information to transform their desire to change into an actionable plan through a SMARTER goal. SMARTER stands for Specific, Measurable, Attainable, Relevant, Time-Sensitive, Enjoyable, and Rewarding. Practical goals have each of these components. That’s why “Just Do It” or even “Exercise 150 minutes a week” isn’t a clear path for actionable change. SMARTER goals go beyond what to do and help people personalize how to change.

For example, the SMARTER version of “exercise 150 minutes a week” for a busy person who works 50 hours a week may look like this: “My goal is to incorporate 150 minutes of physical activity through 60 minutes of aerobic exercise Monday through Friday (20-minute lunch walks) and 90 minutes of combination resistance training on the weekend (two 45-minute sessions) while listening to my favorite music. To meet my goal, I will reward myself by calling a friend to catch up or buy myself a new workout outfit.”

Exercise prescriptions are another helpful way to empower patients with a realistic exercise strategy. In my practice, I developed my own exercise prescription which focuses on overcoming time barriers to exercise and finding personally enjoyable exercises. To enhance self-directed physical activity, I›ve found it useful to have patients complete part of the “exercise prescription” on their own before or after their visit.
 

Tip 4: Use accountability tools

Making a SMARTER goal is one thing, but sticking with it takes regular reinforcement. Even with the best plan, once patients leave the office, there are many distractions from their goals. Accountability is the secret sauce to cultivating consistency. Fitness trackers are an affordable form of accountability. Studies show that wearing a fitness tracker can help people get up to 40 minutes of extra walking, compared with people who don’t wear trackers.

Additionally, clinicians can use different ways to offer exercise accountability. For example, more frequent check-ins, individually or in groups, can be helpful. The increase in telehealth has made interval visits easier. Reimbursement and time can limit clinician-level accountability, however. Other options are referring patients to online support groups or programs sponsored by the government or organizations. For years, I coled a Walk With a Doc chapter in Richmond, Va. There are chapters throughout the country.
 

Tip 5: Prepare and PLAN for setbacks

Breaking news: Most plans don’t go quite as envisioned. Accounting for the potential of setbacks early on helps patients set realistic expectations. As physicians and clinicians, we can help our patients anticipate a few likely obstacles. This may lessen the impact when a setback occurs. Also, it’s helpful to have the patient prepare for a setback with a PLAN for recovering quickly. PLAN stands for Ponder what happened; Learn from it; Adjust the original goal; Now get back on track. Getting back on track as soon as possible is important to keep patients motivated and prevent muscle deconditioning.

Exercise is medicine. Physical inactivity is a leading contributor to many preventable diseases. Although the physical activity statistics are disappointing, improvement is possible. Many systemic changes are needed to increase physical activity on a population level.

While waiting for more extensive changes, we have the power to equip patients with personalized, actionable tools for improving and maintaining physical activity.

We can transform one person at a time through our clinical encounters. Let’s use effective tools to help patients shift from “I Won’t Do It” to “I’m Doing It.”

Sylvia Gonsahn-Bollie, MD, DipABOM, is an integrative obesity specialist focused on individualized solutions for emotional and biological overeating. Her bestselling book, “Embrace You: Your Guide to Transforming Weight Loss Misconceptions Into Lifelong Wellness,” was Healthline.com’s Best Overall Weight Loss Book of 2022 and one of Livestrong.com’s 8 Best Weight-Loss Books to Read in 2022. She reported no conflicts of interest.
 

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

Datascope/Getinge is recalling certain Cardiosave Hybrid and Cardiosave Rescue Intra-Aortic Balloon Pumps (IABPs) because the coiled cable connecting the display and base on some units may fail, causing an unexpected shutdown without warnings or alarms to alert the user.

The U.S. Food and Drug Administration has identified this as a class I recall, the most serious type of recall, because of the risk for serious injury or death.

The FDA warns that an unexpected pump shutdown and any interruption to therapy that occurs can lead to hemodynamic instability, organ damage, and/or death, especially in patients who are critically ill and most likely to receive therapy using these devices.

Wikimedia Commons/FitzColinGerald/Creative Commons License

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

Datascope/Getinge is recalling certain Cardiosave Hybrid and Cardiosave Rescue Intra-Aortic Balloon Pumps (IABPs) because the coiled cable connecting the display and base on some units may fail, causing an unexpected shutdown without warnings or alarms to alert the user.

The U.S. Food and Drug Administration has identified this as a class I recall, the most serious type of recall, because of the risk for serious injury or death.

The FDA warns that an unexpected pump shutdown and any interruption to therapy that occurs can lead to hemodynamic instability, organ damage, and/or death, especially in patients who are critically ill and most likely to receive therapy using these devices.

Wikimedia Commons/FitzColinGerald/Creative Commons License

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

Datascope/Getinge is recalling certain Cardiosave Hybrid and Cardiosave Rescue Intra-Aortic Balloon Pumps (IABPs) because the coiled cable connecting the display and base on some units may fail, causing an unexpected shutdown without warnings or alarms to alert the user.

The U.S. Food and Drug Administration has identified this as a class I recall, the most serious type of recall, because of the risk for serious injury or death.

The FDA warns that an unexpected pump shutdown and any interruption to therapy that occurs can lead to hemodynamic instability, organ damage, and/or death, especially in patients who are critically ill and most likely to receive therapy using these devices.

Wikimedia Commons/FitzColinGerald/Creative Commons License

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

Overall risk for venous thromboembolism (VTE) in nonhospitalized COVID-19 patients is low, but some of those patients may have factors that increase the risk and warrant more surveillance, according to a new retrospective cohort study.

Though VTE risk is well studied and significant in those hospitalized with COVID, little is known about the risk in the outpatient setting, said the authors of the new research published online in JAMA Network Open.

The study was conducted at two integrated health care delivery systems in northern and southern California. Data were gathered from the Kaiser Permanente Virtual Data Warehouse and electronic health records.
 

Nearly 400,000 patients studied

Researchers, led by Margaret Fang, MD, with the division of hospital medicine, University of California, San Francisco, identified 398,530 outpatients with COVID-19 from Jan. 1, 2020, through Jan. 31, 2021.

VTE risk was low overall for ambulatory COVID patients.

“It is a reassuring study,” Dr. Fang said in an interview.

The researchers found that the risk is highest in the first 30 days after COVID-19 diagnosis (unadjusted rate, 0.58; 95% confidence interval, 0.51-0.67 per 100 person-years vs. 0.09; 95% CI, 0.08-0.11 per 100 person-years after 30 days).
 

Factors linked with high VTE risk

They also found that several factors were linked with a higher risk of blood clots in the study population, including being at least 55 years old; being male; having a history of blood clots or thrombophilia; and a body mass index (BMI) of at least 30 kg/m².

The authors write, “These findings may help identify subsets of patients with COVID-19 who could benefit from VTE preventive strategies and more intensive short-term surveillance.”
 

Are routine anticoagulants justified?

Previously, randomized clinical trials have found that hospitalized patients with moderate COVID-19 may benefit from therapeutically dosed heparin anticoagulants but that therapeutic anticoagulation had no net benefit – and perhaps could even harm – patients who were critically ill with COVID.

“[M]uch less is known about the optimal thromboprophylaxis strategy for people with milder presentations of COVID-19 who do not require hospitalization,” they write.
 

Mild COVID VTE risk similar to general population

The authors note that rates of blood clots linked with COVID-19 are not much higher than the average blood clot rate in the general population, which is about 0.1-0.2 per 100 person-years.

Therefore, the results don’t justify routine administration of anticoagulation given the costs, inconvenience, and bleeding risks, they acknowledge.

Dr. Fang told this publication that it’s hard to know what to tell patients, given the overall low VTE risk. She said their study wasn’t designed to advise when to give prophylaxis.
 

Physicians should inform patients of their higher risk

“We should tell our patients who fall into these risk categories that blood clot is a concern after the development of COVID, especially in those first 30 days. And some people might benefit from increased surveillance,” Dr. Fang said.

”I think this study would support ongoing studies that look at whether selected patients benefit from VTE prophylaxis, for example low-dose anticoagulants,” she said.

Dr. Fang said the subgroup factors they found increased risk of blood clots for all patients, not just COVID-19 patients. It’s not clear why factors such as being male may increase blood clot risk, though that is consistent with previous literature, but higher risk with higher BMI might be related to a combination of inflammation or decreased mobility, she said.
 

Unanswered questions

Robert H. Hopkins Jr., MD, says the study helps answer a couple of important questions – that the VTE risk in nonhospitalized COVID-19 patients is low and when and for which patients risk may be highest.

However, there are several unanswered questions that argue against routine initiation of anticoagulants, notes the professor of internal medicine and pediatrics chief, division of general internal medicine, at University of Arkansas for Medical Sciences, Little Rock.

One is the change in the COVID variant landscape.

“We do not know whether rates of VTE are same or lower or higher with current circulating variants,” Dr. Hopkins said.

The authors acknowledge this as a limitation. Study data predate Omicron and subvariants, which appear to lower clinical severity, so it’s unclear whether VTE risk is different in this Omicron era.

Dr. Hopkins added another unknown: “We do not know whether vaccination affects rates of VTE in ambulatory breakthrough infection.”

Dr. Hopkins and the authors also note the lack of a control group in the study, to better compare risk.

Coauthor Dr. Prasad reports consultant fees from EpiExcellence LLC outside the submitted work. Coauthor Dr. Go reports grants paid to the division of research, Kaiser Permanente Northern California, from CSL Behring, Novartis, Bristol Meyers Squibb/Pfizer Alliance, and Janssen outside the submitted work.

The research was funded through Patient-Centered Outcomes Research Institute.

Dr. Hopkins reports no relevant financial relationships.

Overall risk for venous thromboembolism (VTE) in nonhospitalized COVID-19 patients is low, but some of those patients may have factors that increase the risk and warrant more surveillance, according to a new retrospective cohort study.

Though VTE risk is well studied and significant in those hospitalized with COVID, little is known about the risk in the outpatient setting, said the authors of the new research published online in JAMA Network Open.

The study was conducted at two integrated health care delivery systems in northern and southern California. Data were gathered from the Kaiser Permanente Virtual Data Warehouse and electronic health records.
 

Nearly 400,000 patients studied

Researchers, led by Margaret Fang, MD, with the division of hospital medicine, University of California, San Francisco, identified 398,530 outpatients with COVID-19 from Jan. 1, 2020, through Jan. 31, 2021.

VTE risk was low overall for ambulatory COVID patients.

“It is a reassuring study,” Dr. Fang said in an interview.

The researchers found that the risk is highest in the first 30 days after COVID-19 diagnosis (unadjusted rate, 0.58; 95% confidence interval, 0.51-0.67 per 100 person-years vs. 0.09; 95% CI, 0.08-0.11 per 100 person-years after 30 days).
 

Factors linked with high VTE risk

They also found that several factors were linked with a higher risk of blood clots in the study population, including being at least 55 years old; being male; having a history of blood clots or thrombophilia; and a body mass index (BMI) of at least 30 kg/m².

The authors write, “These findings may help identify subsets of patients with COVID-19 who could benefit from VTE preventive strategies and more intensive short-term surveillance.”
 

Are routine anticoagulants justified?

Previously, randomized clinical trials have found that hospitalized patients with moderate COVID-19 may benefit from therapeutically dosed heparin anticoagulants but that therapeutic anticoagulation had no net benefit – and perhaps could even harm – patients who were critically ill with COVID.

“[M]uch less is known about the optimal thromboprophylaxis strategy for people with milder presentations of COVID-19 who do not require hospitalization,” they write.
 

Mild COVID VTE risk similar to general population

The authors note that rates of blood clots linked with COVID-19 are not much higher than the average blood clot rate in the general population, which is about 0.1-0.2 per 100 person-years.

Therefore, the results don’t justify routine administration of anticoagulation given the costs, inconvenience, and bleeding risks, they acknowledge.

Dr. Fang told this publication that it’s hard to know what to tell patients, given the overall low VTE risk. She said their study wasn’t designed to advise when to give prophylaxis.
 

Physicians should inform patients of their higher risk

“We should tell our patients who fall into these risk categories that blood clot is a concern after the development of COVID, especially in those first 30 days. And some people might benefit from increased surveillance,” Dr. Fang said.

”I think this study would support ongoing studies that look at whether selected patients benefit from VTE prophylaxis, for example low-dose anticoagulants,” she said.

Dr. Fang said the subgroup factors they found increased risk of blood clots for all patients, not just COVID-19 patients. It’s not clear why factors such as being male may increase blood clot risk, though that is consistent with previous literature, but higher risk with higher BMI might be related to a combination of inflammation or decreased mobility, she said.
 

Unanswered questions

Robert H. Hopkins Jr., MD, says the study helps answer a couple of important questions – that the VTE risk in nonhospitalized COVID-19 patients is low and when and for which patients risk may be highest.

However, there are several unanswered questions that argue against routine initiation of anticoagulants, notes the professor of internal medicine and pediatrics chief, division of general internal medicine, at University of Arkansas for Medical Sciences, Little Rock.

One is the change in the COVID variant landscape.

“We do not know whether rates of VTE are same or lower or higher with current circulating variants,” Dr. Hopkins said.

The authors acknowledge this as a limitation. Study data predate Omicron and subvariants, which appear to lower clinical severity, so it’s unclear whether VTE risk is different in this Omicron era.

Dr. Hopkins added another unknown: “We do not know whether vaccination affects rates of VTE in ambulatory breakthrough infection.”

Dr. Hopkins and the authors also note the lack of a control group in the study, to better compare risk.

Coauthor Dr. Prasad reports consultant fees from EpiExcellence LLC outside the submitted work. Coauthor Dr. Go reports grants paid to the division of research, Kaiser Permanente Northern California, from CSL Behring, Novartis, Bristol Meyers Squibb/Pfizer Alliance, and Janssen outside the submitted work.

The research was funded through Patient-Centered Outcomes Research Institute.

Dr. Hopkins reports no relevant financial relationships.

Overall risk for venous thromboembolism (VTE) in nonhospitalized COVID-19 patients is low, but some of those patients may have factors that increase the risk and warrant more surveillance, according to a new retrospective cohort study.

Though VTE risk is well studied and significant in those hospitalized with COVID, little is known about the risk in the outpatient setting, said the authors of the new research published online in JAMA Network Open.

The study was conducted at two integrated health care delivery systems in northern and southern California. Data were gathered from the Kaiser Permanente Virtual Data Warehouse and electronic health records.
 

Nearly 400,000 patients studied

Researchers, led by Margaret Fang, MD, with the division of hospital medicine, University of California, San Francisco, identified 398,530 outpatients with COVID-19 from Jan. 1, 2020, through Jan. 31, 2021.

VTE risk was low overall for ambulatory COVID patients.

“It is a reassuring study,” Dr. Fang said in an interview.

The researchers found that the risk is highest in the first 30 days after COVID-19 diagnosis (unadjusted rate, 0.58; 95% confidence interval, 0.51-0.67 per 100 person-years vs. 0.09; 95% CI, 0.08-0.11 per 100 person-years after 30 days).
 

Factors linked with high VTE risk

They also found that several factors were linked with a higher risk of blood clots in the study population, including being at least 55 years old; being male; having a history of blood clots or thrombophilia; and a body mass index (BMI) of at least 30 kg/m².

The authors write, “These findings may help identify subsets of patients with COVID-19 who could benefit from VTE preventive strategies and more intensive short-term surveillance.”
 

Are routine anticoagulants justified?

Previously, randomized clinical trials have found that hospitalized patients with moderate COVID-19 may benefit from therapeutically dosed heparin anticoagulants but that therapeutic anticoagulation had no net benefit – and perhaps could even harm – patients who were critically ill with COVID.

“[M]uch less is known about the optimal thromboprophylaxis strategy for people with milder presentations of COVID-19 who do not require hospitalization,” they write.
 

Mild COVID VTE risk similar to general population

The authors note that rates of blood clots linked with COVID-19 are not much higher than the average blood clot rate in the general population, which is about 0.1-0.2 per 100 person-years.

Therefore, the results don’t justify routine administration of anticoagulation given the costs, inconvenience, and bleeding risks, they acknowledge.

Dr. Fang told this publication that it’s hard to know what to tell patients, given the overall low VTE risk. She said their study wasn’t designed to advise when to give prophylaxis.
 

Physicians should inform patients of their higher risk

“We should tell our patients who fall into these risk categories that blood clot is a concern after the development of COVID, especially in those first 30 days. And some people might benefit from increased surveillance,” Dr. Fang said.

”I think this study would support ongoing studies that look at whether selected patients benefit from VTE prophylaxis, for example low-dose anticoagulants,” she said.

Dr. Fang said the subgroup factors they found increased risk of blood clots for all patients, not just COVID-19 patients. It’s not clear why factors such as being male may increase blood clot risk, though that is consistent with previous literature, but higher risk with higher BMI might be related to a combination of inflammation or decreased mobility, she said.
 

Unanswered questions

Robert H. Hopkins Jr., MD, says the study helps answer a couple of important questions – that the VTE risk in nonhospitalized COVID-19 patients is low and when and for which patients risk may be highest.

However, there are several unanswered questions that argue against routine initiation of anticoagulants, notes the professor of internal medicine and pediatrics chief, division of general internal medicine, at University of Arkansas for Medical Sciences, Little Rock.

One is the change in the COVID variant landscape.

“We do not know whether rates of VTE are same or lower or higher with current circulating variants,” Dr. Hopkins said.

The authors acknowledge this as a limitation. Study data predate Omicron and subvariants, which appear to lower clinical severity, so it’s unclear whether VTE risk is different in this Omicron era.

Dr. Hopkins added another unknown: “We do not know whether vaccination affects rates of VTE in ambulatory breakthrough infection.”

Dr. Hopkins and the authors also note the lack of a control group in the study, to better compare risk.

Coauthor Dr. Prasad reports consultant fees from EpiExcellence LLC outside the submitted work. Coauthor Dr. Go reports grants paid to the division of research, Kaiser Permanente Northern California, from CSL Behring, Novartis, Bristol Meyers Squibb/Pfizer Alliance, and Janssen outside the submitted work.

The research was funded through Patient-Centered Outcomes Research Institute.

Dr. Hopkins reports no relevant financial relationships.

Providing care for individuals with both cardiovascular disease (CVD) and obesity necessitates addressing both conditions at the same time, say the authors of a new state-of-the-art review.

“CVD and obesity are common conditions that frequently coexist. We cannot treat one of these conditions while ignoring the other,” Rosana G. Bianchettin, MD, of the division of cardiovascular diseases, Mayo Clinic, Rochester, Minn., and colleagues wrote in their review, recently published in the Journal of the American College of Cardiology.

The review outlines, for example, how obesity can impair common imaging tests used to diagnose heart disease, potentially reducing their accuracy.

And cardiac procedures such as percutaneous coronary intervention, open heart surgery, and revascularization all involve greater risk in the setting of obesity, while procedures such as valve replacement and heart transplantation carry a greater likelihood of failure.

Obesity can also alter drug pharmacokinetics and pharmacodynamics.

Weight reduction is an important part of the management of patients with cardiovascular disease and obesity, and “cardiac rehabilitation programs represent a potential opportunity for structured interventions,” the authors noted. However, “when other measures are insufficient, bariatric surgery can improve outcomes.”

They also advised against relying solely on body mass index (BMI) to assess adiposity: “It is prudent to investigate a range of complementary ... parameters alongside standard BMI calculations (accounting for age, race, and sex), including measures of central obesity, such as waist circumference, waist-to-hip ratio, and weight-to-height ratio.”
 

Excess fat acts as filter and can skew diagnostic results

“Obesity affects nearly all the diagnostic tests used in cardiology, such as ECG, CT scan, MRI, and echocardiogram,” senior author Francisco Lopez-Jimenez, MD, director of preventive cardiology at Mayo Clinic, explained in a statement.

The review includes a detailed table of these key obesity-related challenges. With electrocardiograms, for example, obesity can cause displacement of the heart, increased cardiac workload, and widening of the distance between the heart and the recording electrodes.

Obesity also lowers the sensitivity of exercise echocardiography, and use of CT coronary angiogram is completely precluded in people with a BMI above 40 kg/m². In interventional radiology, there may be poor visualization of target areas.

“Excess fat acts as a kind of filter and can skew test readings to under- or overdiagnosis,” noted Dr. Lopez-Jimenez.
 

Therapeutic challenges: Drugs may work differently

A longer table in the review summarizes the therapeutic challenges involved in lifestyle modification, pharmacology, cardiac procedures, and other therapeutic measures for people with the two conditions.

Obesity can limit a person’s ability to exercise, for example, and smoking cessation may promote overeating and further weight gain.

Moreover, “tailoring pharmacotherapy is difficult because of unique pharmacokinetic and pharmacodynamic factors in people with obesity that alter distribution, metabolism, and elimination of drugs. Each drug also has special properties that must be considered when it is administrated,” the authors wrote.

Examples include the higher volume of distribution of lipophilic drugs in those with increased fat mass, alterations in liver metabolism, and difficulties with anticoagulant dosing.
 

Cardiac rehabilitation is an intervention opportunity

Although cardiac rehabilitation is “a cornerstone in secondary prevention” for people who have experienced a cardiac event, only 8% of such programs include formal in-house behavioral weight-loss programs.

But that could be remedied and expanded with the use of options such as home-based rehabilitation and telephone counseling, particularly in rural communities, Dr. Bianchettin and colleagues said.

“Motivated individuals will benefit from multicomponent approaches and should be encouraged to set specific, proximal, shared goals with their health care professional. A multitude of tools are available to support self-monitoring (e.g., smartphone applications, food diaries), and scheduled regular follow-up and feedback on progress can help to maintain motivation,” they wrote.

The bottom line, said Dr. Lopez-Jimenez: “Obesity is an important risk factor to address in patients with heart disease and it requires us to do something. ... The patient needs to know that their clinician can help them lose weight. Overall, weight-loss solutions come down to finding the right therapy for the patient.”

Dr. Bianchettin reported no relevant financial relationships. Dr. Lopez-Jimenez has reported conducting research related to 3D body assessment with Select Research, Mayo Clinic, and may benefit in the future if the technology is commercialized; he has not received any relevant monetary, financial, or other type of compensation to date, in relationship to this arrangement. He is a member of the scientific advisory board for Novo Nordisk.

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

Providing care for individuals with both cardiovascular disease (CVD) and obesity necessitates addressing both conditions at the same time, say the authors of a new state-of-the-art review.

“CVD and obesity are common conditions that frequently coexist. We cannot treat one of these conditions while ignoring the other,” Rosana G. Bianchettin, MD, of the division of cardiovascular diseases, Mayo Clinic, Rochester, Minn., and colleagues wrote in their review, recently published in the Journal of the American College of Cardiology.

The review outlines, for example, how obesity can impair common imaging tests used to diagnose heart disease, potentially reducing their accuracy.

And cardiac procedures such as percutaneous coronary intervention, open heart surgery, and revascularization all involve greater risk in the setting of obesity, while procedures such as valve replacement and heart transplantation carry a greater likelihood of failure.

Obesity can also alter drug pharmacokinetics and pharmacodynamics.

Weight reduction is an important part of the management of patients with cardiovascular disease and obesity, and “cardiac rehabilitation programs represent a potential opportunity for structured interventions,” the authors noted. However, “when other measures are insufficient, bariatric surgery can improve outcomes.”

They also advised against relying solely on body mass index (BMI) to assess adiposity: “It is prudent to investigate a range of complementary ... parameters alongside standard BMI calculations (accounting for age, race, and sex), including measures of central obesity, such as waist circumference, waist-to-hip ratio, and weight-to-height ratio.”
 

Excess fat acts as filter and can skew diagnostic results

“Obesity affects nearly all the diagnostic tests used in cardiology, such as ECG, CT scan, MRI, and echocardiogram,” senior author Francisco Lopez-Jimenez, MD, director of preventive cardiology at Mayo Clinic, explained in a statement.

The review includes a detailed table of these key obesity-related challenges. With electrocardiograms, for example, obesity can cause displacement of the heart, increased cardiac workload, and widening of the distance between the heart and the recording electrodes.

Obesity also lowers the sensitivity of exercise echocardiography, and use of CT coronary angiogram is completely precluded in people with a BMI above 40 kg/m². In interventional radiology, there may be poor visualization of target areas.

“Excess fat acts as a kind of filter and can skew test readings to under- or overdiagnosis,” noted Dr. Lopez-Jimenez.
 

Therapeutic challenges: Drugs may work differently

A longer table in the review summarizes the therapeutic challenges involved in lifestyle modification, pharmacology, cardiac procedures, and other therapeutic measures for people with the two conditions.

Obesity can limit a person’s ability to exercise, for example, and smoking cessation may promote overeating and further weight gain.

Moreover, “tailoring pharmacotherapy is difficult because of unique pharmacokinetic and pharmacodynamic factors in people with obesity that alter distribution, metabolism, and elimination of drugs. Each drug also has special properties that must be considered when it is administrated,” the authors wrote.

Examples include the higher volume of distribution of lipophilic drugs in those with increased fat mass, alterations in liver metabolism, and difficulties with anticoagulant dosing.
 

Cardiac rehabilitation is an intervention opportunity

Although cardiac rehabilitation is “a cornerstone in secondary prevention” for people who have experienced a cardiac event, only 8% of such programs include formal in-house behavioral weight-loss programs.

But that could be remedied and expanded with the use of options such as home-based rehabilitation and telephone counseling, particularly in rural communities, Dr. Bianchettin and colleagues said.

“Motivated individuals will benefit from multicomponent approaches and should be encouraged to set specific, proximal, shared goals with their health care professional. A multitude of tools are available to support self-monitoring (e.g., smartphone applications, food diaries), and scheduled regular follow-up and feedback on progress can help to maintain motivation,” they wrote.

The bottom line, said Dr. Lopez-Jimenez: “Obesity is an important risk factor to address in patients with heart disease and it requires us to do something. ... The patient needs to know that their clinician can help them lose weight. Overall, weight-loss solutions come down to finding the right therapy for the patient.”

Dr. Bianchettin reported no relevant financial relationships. Dr. Lopez-Jimenez has reported conducting research related to 3D body assessment with Select Research, Mayo Clinic, and may benefit in the future if the technology is commercialized; he has not received any relevant monetary, financial, or other type of compensation to date, in relationship to this arrangement. He is a member of the scientific advisory board for Novo Nordisk.

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

Providing care for individuals with both cardiovascular disease (CVD) and obesity necessitates addressing both conditions at the same time, say the authors of a new state-of-the-art review.

“CVD and obesity are common conditions that frequently coexist. We cannot treat one of these conditions while ignoring the other,” Rosana G. Bianchettin, MD, of the division of cardiovascular diseases, Mayo Clinic, Rochester, Minn., and colleagues wrote in their review, recently published in the Journal of the American College of Cardiology.

The review outlines, for example, how obesity can impair common imaging tests used to diagnose heart disease, potentially reducing their accuracy.

And cardiac procedures such as percutaneous coronary intervention, open heart surgery, and revascularization all involve greater risk in the setting of obesity, while procedures such as valve replacement and heart transplantation carry a greater likelihood of failure.

Obesity can also alter drug pharmacokinetics and pharmacodynamics.

Weight reduction is an important part of the management of patients with cardiovascular disease and obesity, and “cardiac rehabilitation programs represent a potential opportunity for structured interventions,” the authors noted. However, “when other measures are insufficient, bariatric surgery can improve outcomes.”

They also advised against relying solely on body mass index (BMI) to assess adiposity: “It is prudent to investigate a range of complementary ... parameters alongside standard BMI calculations (accounting for age, race, and sex), including measures of central obesity, such as waist circumference, waist-to-hip ratio, and weight-to-height ratio.”
 

Excess fat acts as filter and can skew diagnostic results

“Obesity affects nearly all the diagnostic tests used in cardiology, such as ECG, CT scan, MRI, and echocardiogram,” senior author Francisco Lopez-Jimenez, MD, director of preventive cardiology at Mayo Clinic, explained in a statement.

The review includes a detailed table of these key obesity-related challenges. With electrocardiograms, for example, obesity can cause displacement of the heart, increased cardiac workload, and widening of the distance between the heart and the recording electrodes.

Obesity also lowers the sensitivity of exercise echocardiography, and use of CT coronary angiogram is completely precluded in people with a BMI above 40 kg/m². In interventional radiology, there may be poor visualization of target areas.

“Excess fat acts as a kind of filter and can skew test readings to under- or overdiagnosis,” noted Dr. Lopez-Jimenez.
 

Therapeutic challenges: Drugs may work differently

A longer table in the review summarizes the therapeutic challenges involved in lifestyle modification, pharmacology, cardiac procedures, and other therapeutic measures for people with the two conditions.

Obesity can limit a person’s ability to exercise, for example, and smoking cessation may promote overeating and further weight gain.

Moreover, “tailoring pharmacotherapy is difficult because of unique pharmacokinetic and pharmacodynamic factors in people with obesity that alter distribution, metabolism, and elimination of drugs. Each drug also has special properties that must be considered when it is administrated,” the authors wrote.

Examples include the higher volume of distribution of lipophilic drugs in those with increased fat mass, alterations in liver metabolism, and difficulties with anticoagulant dosing.
 

Cardiac rehabilitation is an intervention opportunity

Although cardiac rehabilitation is “a cornerstone in secondary prevention” for people who have experienced a cardiac event, only 8% of such programs include formal in-house behavioral weight-loss programs.

But that could be remedied and expanded with the use of options such as home-based rehabilitation and telephone counseling, particularly in rural communities, Dr. Bianchettin and colleagues said.

“Motivated individuals will benefit from multicomponent approaches and should be encouraged to set specific, proximal, shared goals with their health care professional. A multitude of tools are available to support self-monitoring (e.g., smartphone applications, food diaries), and scheduled regular follow-up and feedback on progress can help to maintain motivation,” they wrote.

The bottom line, said Dr. Lopez-Jimenez: “Obesity is an important risk factor to address in patients with heart disease and it requires us to do something. ... The patient needs to know that their clinician can help them lose weight. Overall, weight-loss solutions come down to finding the right therapy for the patient.”

Dr. Bianchettin reported no relevant financial relationships. Dr. Lopez-Jimenez has reported conducting research related to 3D body assessment with Select Research, Mayo Clinic, and may benefit in the future if the technology is commercialized; he has not received any relevant monetary, financial, or other type of compensation to date, in relationship to this arrangement. He is a member of the scientific advisory board for Novo Nordisk.

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