Cardiology

Background: Direct oral anticoagulants have proven to be more efficacious, safe, and easy to use, compared with warfarin, in patients with atrial fibrillation (Afib). An indirect comparison showed apixaban to be more effective and safer than rivaroxaban. But randomized controlled trials and head-to-head comparison data regarding the same have been lacking until now.

This observational study has several limitations including an inability to balance unmeasured confounding factors, both ICD-9 and ICD-10 codes being used for defined outcomes, an inability to account for time-varying confounders for stroke or bleeding, an inability to capture patients from locations other than primary internist and cardiologists, and a shorter follow-up period, compared with that of clinical trials.

Bottom line: In routine practice, apixaban is more effective and safer than rivaroxaban with a lower rate of strokes, systemic embolism, and major bleeding.

Citation: Fralick M et al. Effectiveness and safety of apixaban compared with rivaroxaban for patients with atrial fibrillation in routine practice: a cohort study. Ann Intern Med. 2020 Apr 7. doi: 10.7326/M19-2522.

Dr. Almagdub is a hospitalist and assistant professor of medicine at UK HealthCare, Lexington, Ky.

Background: Direct oral anticoagulants have proven to be more efficacious, safe, and easy to use, compared with warfarin, in patients with atrial fibrillation (Afib). An indirect comparison showed apixaban to be more effective and safer than rivaroxaban. But randomized controlled trials and head-to-head comparison data regarding the same have been lacking until now.

This observational study has several limitations including an inability to balance unmeasured confounding factors, both ICD-9 and ICD-10 codes being used for defined outcomes, an inability to account for time-varying confounders for stroke or bleeding, an inability to capture patients from locations other than primary internist and cardiologists, and a shorter follow-up period, compared with that of clinical trials.

Bottom line: In routine practice, apixaban is more effective and safer than rivaroxaban with a lower rate of strokes, systemic embolism, and major bleeding.

Citation: Fralick M et al. Effectiveness and safety of apixaban compared with rivaroxaban for patients with atrial fibrillation in routine practice: a cohort study. Ann Intern Med. 2020 Apr 7. doi: 10.7326/M19-2522.

Dr. Almagdub is a hospitalist and assistant professor of medicine at UK HealthCare, Lexington, Ky.

Background: Direct oral anticoagulants have proven to be more efficacious, safe, and easy to use, compared with warfarin, in patients with atrial fibrillation (Afib). An indirect comparison showed apixaban to be more effective and safer than rivaroxaban. But randomized controlled trials and head-to-head comparison data regarding the same have been lacking until now.

This observational study has several limitations including an inability to balance unmeasured confounding factors, both ICD-9 and ICD-10 codes being used for defined outcomes, an inability to account for time-varying confounders for stroke or bleeding, an inability to capture patients from locations other than primary internist and cardiologists, and a shorter follow-up period, compared with that of clinical trials.

Bottom line: In routine practice, apixaban is more effective and safer than rivaroxaban with a lower rate of strokes, systemic embolism, and major bleeding.

Citation: Fralick M et al. Effectiveness and safety of apixaban compared with rivaroxaban for patients with atrial fibrillation in routine practice: a cohort study. Ann Intern Med. 2020 Apr 7. doi: 10.7326/M19-2522.

Dr. Almagdub is a hospitalist and assistant professor of medicine at UK HealthCare, Lexington, Ky.

The presence of chronic kidney disease (CKD) or end-stage renal disease (ESRD) is associated with worse in-hospital and short-term outcomes after left atrial appendage (LAA) closure, a nationwide study shows.

Patients with ESRD were particularly vulnerable, having about 6.5-fold higher odds of in-hospital mortality than those without CKD and about 11.5-fold higher odds than those with CKD, even after adjustment for potential confounders.

Patients with CKD had higher rates of stroke or transient ischemic attack (TIA) and more short-term readmissions for bleeding, Keerat Rai Ahuja, MD, Reading Hospital-Tower Health, West Reading, Pennsylvania, and colleagues reported August 16 in JACC: Cardiovascular Interventions.

CKD and ESRD are known to be associated with an increased risk for stroke and bleeding in patients with atrial fibrillation (AFib), yet data are limited on the safety and efficacy of LAA closure for stroke prevention in AFib patients with CKD or ESRD, they note.  

“It’s important to know about CKD and understand that there may be an association with worse levels of CKD and worse outcomes, but the data that strikes me is really that for end-stage renal disease,” Matthew Sherwood, MD, MHS, who was not involved with the study, said in an interview.

He noted that data have not been published for patients with CKD and ESRD enrolled in the pivotal PROTECT-AF and PREVAIL trials of Boston Scientific’s Watchman device or from large clinical registries such as EWOLUTION and the company’s continued access protocol registries.

Further, it’s not well understood what the best strategy is to prevent stroke in AFib patients with ESRD and whether they benefit from anticoagulation with warfarin or any of the newer agents. “Thus, it’s hard to then say: ‘Well they have worse outcomes with Watchman,’ which is true as shown in this study, but they may not have any other options based upon the lack of data for oral anticoagulants in end-stage kidney disease patients,” said Dr. Sherwood, from the Inova Heart and Vascular Institute, Falls Church, Virginia.

The lack of clarity is concerning, given rising atrial fibrillation cases and the prevalence of abnormal renal function in everyday practice. In the present study – involving 21,274 patients undergoing LAA closure between 2016 and 2017 in the Nationwide Readmissions Database – 18.6% of patients had CKD stages I to V and 2.7% had ESRD based on ICD-10 codes.

In-hospital mortality was increased only in patients with ESRD. In all, 3.3% of patients with ESRD and 0.4% of those with no CKD died in hospital (adjusted odds ratio [aOR], 6.48), as did 0.5% of patients with CKD (aOR, 11.43; both P <.001).

“These patients represent a sicker population at baseline and have an inherent greater risk for mortality in cardiac interventions, as noted in other studies of structural heart interventions,” Dr. Ahuja and colleagues write.

Patients with CKD had a higher risk for in-hospital stroke or TIA than patients with no CKD (1.8% vs. 1.3%; aOR, 1.35; P = .038) and this risk continued up to 90 days after discharge (1.7% vs. 1.0%; aOR, 1.67; P = .007).

The in-hospital stroke rate was numerically higher in patients with ESRD compared with no CKD (aOR, 1.18; P = .62).

The authors point out that previous LAA closure and CKD studies have reported no differences in in-hospital or subsequent stroke/TIA rates in patients with and without CKD. Possible explanations are that patients with CKD in the present study had higher CHA2DS2-VASc scores than those without CKD (4.18 vs. 3.62) and, second, patients with CKD and AFib are known to have higher risk for thromboembolic events than those with AFib without CKD.

CKD patients were also more likely than those without CKD to experience in-hospital acute kidney injury or hemodialysis (aOR, 5.02; P <.001).

CKD has been shown to be independently associated with acute kidney injury (AKI) after LAA closure. AKI may have long-term thromboembolic consequences, the authors suggest, with one study reporting higher stroke risk at midterm follow-up in patients with AKI.

“As with other cardiac interventions in patients with CKD, efforts should be made to optimize preoperative renal function, minimize contrast volume, and avoid abrupt hemodynamic changes such as hypotension during the procedure to prevent AKI,” Dr. Ahuja and colleagues write.

Patients with CKD and ESRD had longer index length of stay than those without CKD but had similar rates of other in-hospital complications, such as systemic embolization, bleeding/transfusion, vascular complications, and pericardial tamponade requiring intervention.

Among the short-term outcomes, 30- and 90-day all-cause readmissions were increased in patients with CKD and ESRD compared with those without CKD, and 30-day bleeding readmissions were increased within the CKD cohort.

“With Watchman and left atrial appendage closure, what we see is that they have higher rates of readmission and other problems,” Dr. Sherwood said. “I think we understand that that’s probably related not to the procedure itself, not because the Watchman doesn’t work for end-stage kidney disease, but because the patients themselves are likely higher risk.”

Commonly used risk scores for atrial fibrillation, however, don’t take into account advanced kidney disease, he added.

Besides the inherent limitations of observational studies, Dr. Sherwood and the authors point to the lack of laboratory variables and procedural variables in the database, the fact that CKD was defined using ICD-10 codes, that outcomes were not clinically adjudicated, that unmeasured confounders likely still exist, and that long-term follow-up is lacking.

Dr. Sherwood, who wrote an editorial accompanying the study, said that the release of outcomes data from CKD and ESRD patients in the major clinical trials would be helpful going forward, as would possible involvement with the Kidney Disease Improving Global Outcomes organization.

“One of the main points of this study is that we just need a lot more research diving into this patient population,” he said.

The authors report no relevant financial relationships. Dr. Sherwood reports honoraria from Janssen and Medtronic. Editorial coauthor Sean Pokorney reports research grant support from Gilead, Boston Scientific, Pfizer, Bristol Myers Squibb, Janssen, and the Food and Drug Administration; and advisory board, consulting, and honoraria supports from Medtronic, Boston Scientific, Pfizer, Bristol Myers Squibb, Philips, and Zoll.

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

The presence of chronic kidney disease (CKD) or end-stage renal disease (ESRD) is associated with worse in-hospital and short-term outcomes after left atrial appendage (LAA) closure, a nationwide study shows.

Patients with ESRD were particularly vulnerable, having about 6.5-fold higher odds of in-hospital mortality than those without CKD and about 11.5-fold higher odds than those with CKD, even after adjustment for potential confounders.

Patients with CKD had higher rates of stroke or transient ischemic attack (TIA) and more short-term readmissions for bleeding, Keerat Rai Ahuja, MD, Reading Hospital-Tower Health, West Reading, Pennsylvania, and colleagues reported August 16 in JACC: Cardiovascular Interventions.

CKD and ESRD are known to be associated with an increased risk for stroke and bleeding in patients with atrial fibrillation (AFib), yet data are limited on the safety and efficacy of LAA closure for stroke prevention in AFib patients with CKD or ESRD, they note.  

“It’s important to know about CKD and understand that there may be an association with worse levels of CKD and worse outcomes, but the data that strikes me is really that for end-stage renal disease,” Matthew Sherwood, MD, MHS, who was not involved with the study, said in an interview.

He noted that data have not been published for patients with CKD and ESRD enrolled in the pivotal PROTECT-AF and PREVAIL trials of Boston Scientific’s Watchman device or from large clinical registries such as EWOLUTION and the company’s continued access protocol registries.

Further, it’s not well understood what the best strategy is to prevent stroke in AFib patients with ESRD and whether they benefit from anticoagulation with warfarin or any of the newer agents. “Thus, it’s hard to then say: ‘Well they have worse outcomes with Watchman,’ which is true as shown in this study, but they may not have any other options based upon the lack of data for oral anticoagulants in end-stage kidney disease patients,” said Dr. Sherwood, from the Inova Heart and Vascular Institute, Falls Church, Virginia.

The lack of clarity is concerning, given rising atrial fibrillation cases and the prevalence of abnormal renal function in everyday practice. In the present study – involving 21,274 patients undergoing LAA closure between 2016 and 2017 in the Nationwide Readmissions Database – 18.6% of patients had CKD stages I to V and 2.7% had ESRD based on ICD-10 codes.

In-hospital mortality was increased only in patients with ESRD. In all, 3.3% of patients with ESRD and 0.4% of those with no CKD died in hospital (adjusted odds ratio [aOR], 6.48), as did 0.5% of patients with CKD (aOR, 11.43; both P <.001).

“These patients represent a sicker population at baseline and have an inherent greater risk for mortality in cardiac interventions, as noted in other studies of structural heart interventions,” Dr. Ahuja and colleagues write.

Patients with CKD had a higher risk for in-hospital stroke or TIA than patients with no CKD (1.8% vs. 1.3%; aOR, 1.35; P = .038) and this risk continued up to 90 days after discharge (1.7% vs. 1.0%; aOR, 1.67; P = .007).

The in-hospital stroke rate was numerically higher in patients with ESRD compared with no CKD (aOR, 1.18; P = .62).

The authors point out that previous LAA closure and CKD studies have reported no differences in in-hospital or subsequent stroke/TIA rates in patients with and without CKD. Possible explanations are that patients with CKD in the present study had higher CHA2DS2-VASc scores than those without CKD (4.18 vs. 3.62) and, second, patients with CKD and AFib are known to have higher risk for thromboembolic events than those with AFib without CKD.

CKD patients were also more likely than those without CKD to experience in-hospital acute kidney injury or hemodialysis (aOR, 5.02; P <.001).

CKD has been shown to be independently associated with acute kidney injury (AKI) after LAA closure. AKI may have long-term thromboembolic consequences, the authors suggest, with one study reporting higher stroke risk at midterm follow-up in patients with AKI.

“As with other cardiac interventions in patients with CKD, efforts should be made to optimize preoperative renal function, minimize contrast volume, and avoid abrupt hemodynamic changes such as hypotension during the procedure to prevent AKI,” Dr. Ahuja and colleagues write.

Patients with CKD and ESRD had longer index length of stay than those without CKD but had similar rates of other in-hospital complications, such as systemic embolization, bleeding/transfusion, vascular complications, and pericardial tamponade requiring intervention.

Among the short-term outcomes, 30- and 90-day all-cause readmissions were increased in patients with CKD and ESRD compared with those without CKD, and 30-day bleeding readmissions were increased within the CKD cohort.

“With Watchman and left atrial appendage closure, what we see is that they have higher rates of readmission and other problems,” Dr. Sherwood said. “I think we understand that that’s probably related not to the procedure itself, not because the Watchman doesn’t work for end-stage kidney disease, but because the patients themselves are likely higher risk.”

Commonly used risk scores for atrial fibrillation, however, don’t take into account advanced kidney disease, he added.

Besides the inherent limitations of observational studies, Dr. Sherwood and the authors point to the lack of laboratory variables and procedural variables in the database, the fact that CKD was defined using ICD-10 codes, that outcomes were not clinically adjudicated, that unmeasured confounders likely still exist, and that long-term follow-up is lacking.

Dr. Sherwood, who wrote an editorial accompanying the study, said that the release of outcomes data from CKD and ESRD patients in the major clinical trials would be helpful going forward, as would possible involvement with the Kidney Disease Improving Global Outcomes organization.

“One of the main points of this study is that we just need a lot more research diving into this patient population,” he said.

The authors report no relevant financial relationships. Dr. Sherwood reports honoraria from Janssen and Medtronic. Editorial coauthor Sean Pokorney reports research grant support from Gilead, Boston Scientific, Pfizer, Bristol Myers Squibb, Janssen, and the Food and Drug Administration; and advisory board, consulting, and honoraria supports from Medtronic, Boston Scientific, Pfizer, Bristol Myers Squibb, Philips, and Zoll.

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

The presence of chronic kidney disease (CKD) or end-stage renal disease (ESRD) is associated with worse in-hospital and short-term outcomes after left atrial appendage (LAA) closure, a nationwide study shows.

Patients with ESRD were particularly vulnerable, having about 6.5-fold higher odds of in-hospital mortality than those without CKD and about 11.5-fold higher odds than those with CKD, even after adjustment for potential confounders.

Patients with CKD had higher rates of stroke or transient ischemic attack (TIA) and more short-term readmissions for bleeding, Keerat Rai Ahuja, MD, Reading Hospital-Tower Health, West Reading, Pennsylvania, and colleagues reported August 16 in JACC: Cardiovascular Interventions.

CKD and ESRD are known to be associated with an increased risk for stroke and bleeding in patients with atrial fibrillation (AFib), yet data are limited on the safety and efficacy of LAA closure for stroke prevention in AFib patients with CKD or ESRD, they note.  

“It’s important to know about CKD and understand that there may be an association with worse levels of CKD and worse outcomes, but the data that strikes me is really that for end-stage renal disease,” Matthew Sherwood, MD, MHS, who was not involved with the study, said in an interview.

He noted that data have not been published for patients with CKD and ESRD enrolled in the pivotal PROTECT-AF and PREVAIL trials of Boston Scientific’s Watchman device or from large clinical registries such as EWOLUTION and the company’s continued access protocol registries.

Further, it’s not well understood what the best strategy is to prevent stroke in AFib patients with ESRD and whether they benefit from anticoagulation with warfarin or any of the newer agents. “Thus, it’s hard to then say: ‘Well they have worse outcomes with Watchman,’ which is true as shown in this study, but they may not have any other options based upon the lack of data for oral anticoagulants in end-stage kidney disease patients,” said Dr. Sherwood, from the Inova Heart and Vascular Institute, Falls Church, Virginia.

The lack of clarity is concerning, given rising atrial fibrillation cases and the prevalence of abnormal renal function in everyday practice. In the present study – involving 21,274 patients undergoing LAA closure between 2016 and 2017 in the Nationwide Readmissions Database – 18.6% of patients had CKD stages I to V and 2.7% had ESRD based on ICD-10 codes.

In-hospital mortality was increased only in patients with ESRD. In all, 3.3% of patients with ESRD and 0.4% of those with no CKD died in hospital (adjusted odds ratio [aOR], 6.48), as did 0.5% of patients with CKD (aOR, 11.43; both P <.001).

“These patients represent a sicker population at baseline and have an inherent greater risk for mortality in cardiac interventions, as noted in other studies of structural heart interventions,” Dr. Ahuja and colleagues write.

Patients with CKD had a higher risk for in-hospital stroke or TIA than patients with no CKD (1.8% vs. 1.3%; aOR, 1.35; P = .038) and this risk continued up to 90 days after discharge (1.7% vs. 1.0%; aOR, 1.67; P = .007).

The in-hospital stroke rate was numerically higher in patients with ESRD compared with no CKD (aOR, 1.18; P = .62).

The authors point out that previous LAA closure and CKD studies have reported no differences in in-hospital or subsequent stroke/TIA rates in patients with and without CKD. Possible explanations are that patients with CKD in the present study had higher CHA2DS2-VASc scores than those without CKD (4.18 vs. 3.62) and, second, patients with CKD and AFib are known to have higher risk for thromboembolic events than those with AFib without CKD.

CKD patients were also more likely than those without CKD to experience in-hospital acute kidney injury or hemodialysis (aOR, 5.02; P <.001).

CKD has been shown to be independently associated with acute kidney injury (AKI) after LAA closure. AKI may have long-term thromboembolic consequences, the authors suggest, with one study reporting higher stroke risk at midterm follow-up in patients with AKI.

“As with other cardiac interventions in patients with CKD, efforts should be made to optimize preoperative renal function, minimize contrast volume, and avoid abrupt hemodynamic changes such as hypotension during the procedure to prevent AKI,” Dr. Ahuja and colleagues write.

Patients with CKD and ESRD had longer index length of stay than those without CKD but had similar rates of other in-hospital complications, such as systemic embolization, bleeding/transfusion, vascular complications, and pericardial tamponade requiring intervention.

Among the short-term outcomes, 30- and 90-day all-cause readmissions were increased in patients with CKD and ESRD compared with those without CKD, and 30-day bleeding readmissions were increased within the CKD cohort.

“With Watchman and left atrial appendage closure, what we see is that they have higher rates of readmission and other problems,” Dr. Sherwood said. “I think we understand that that’s probably related not to the procedure itself, not because the Watchman doesn’t work for end-stage kidney disease, but because the patients themselves are likely higher risk.”

Commonly used risk scores for atrial fibrillation, however, don’t take into account advanced kidney disease, he added.

Besides the inherent limitations of observational studies, Dr. Sherwood and the authors point to the lack of laboratory variables and procedural variables in the database, the fact that CKD was defined using ICD-10 codes, that outcomes were not clinically adjudicated, that unmeasured confounders likely still exist, and that long-term follow-up is lacking.

Dr. Sherwood, who wrote an editorial accompanying the study, said that the release of outcomes data from CKD and ESRD patients in the major clinical trials would be helpful going forward, as would possible involvement with the Kidney Disease Improving Global Outcomes organization.

“One of the main points of this study is that we just need a lot more research diving into this patient population,” he said.

The authors report no relevant financial relationships. Dr. Sherwood reports honoraria from Janssen and Medtronic. Editorial coauthor Sean Pokorney reports research grant support from Gilead, Boston Scientific, Pfizer, Bristol Myers Squibb, Janssen, and the Food and Drug Administration; and advisory board, consulting, and honoraria supports from Medtronic, Boston Scientific, Pfizer, Bristol Myers Squibb, Philips, and Zoll.

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

Tweets from a black female medical student about the perils of being on call after lengthy hospital shifts was met with a stinging rebuke from the Twitter account of the Connecticut chapter of the American College of Cardiology – prompting an apology and some high-octane exchanges on medical Twitter.

In a series of Tweets, “queen of anonymous medicine” @QueenMD202X describes one friend “working 87 hours this week and 13 days straight” and a second, a third-year medical student working a 15-hour surgical shift. “That is cruel,” she writes, “15-hour shift? For what?????”

In response to a Tweet suggesting that being on call can be a valuable experience for students to know what they’re facing once they get to residency, @QueenMD202X pointed out the 15-hour shifts aren’t just a one-off.

In a now-deleted Tweet that nevertheless appears in several additional tweets as a screenshot, @ConnecticutACC replied: “You might be in the wrong field. You sound very angry probably unsuitable for patient care when your mental state is as you describe it. Emotions are contagious.”

The response from the medical and broader Twitter community was swift, with several tweets calling the chapter’s reply insensitive and racist.

In another Tweet, @BrittGratreak responded by stating: “I think institutions need to be more transparent how they basically weigh the costs & benefits of writing a memorial statement for students who die by suicide rather than investing in changing the toxic culture of medical education to prevent deaths & producing harmed physicians.”

Within hours, Connecticut-ACC issued an apology from their now-deleted account and questioned the origins of the Tweet. “We sincerely apologize for the earlier post as the views do not represent the values or beliefs of the Chapter or broader ACC. We are working to ID its origins. Burnout & well-being are critical issues [that] ACC/CCACC is working to address on behalf of members at all career stages.”

Speaking to this news organization, Connecticut-ACC president and governor Craig McPherson, MD, Yale University, New Haven, Conn., said the chapter believes its account was hacked.

“We provide limited password access to our Twitter account, and we assume, since we’ve contacted most of the individuals who had access to the current password and all of the them deny any knowledge, the account got hacked … it’s just one of those unfortunate aspects of social media,” he said.

The password was quickly changed after the chapter learned of the Tweet on Wednesday and the account has since been closed, at Dr. McPherson’s request.

“We don’t condone that kind of language, that kind of remark. It’s highly inappropriate, and I certainly agree with anyone that voiced that opinion in the Twitterstorm that followed,” he said. “But as I said at the outset, I have no control over what people say on social media once it’s out there. All we can do is apologize for the fact our Twitter feed was used as a vehicle for those comments, which we consider inappropriate.”

Asked whether he considered the remarks racist, Dr. McPherson replied: “That’s not for me to judge.”

ACC president Dipti Itchhaporia, MD, however, weighed in this afternoon with a Tweet citing the need to address clinician well-being and an inclusive workplace.

Some on Twitter recalled their own long hours as a medical student or defended the need to inculcate students in the long hours they’ll face as physicians. Others observed that neither ACC nor its Connecticut chapter addressed the issue of medical student hours in their response. Although fellow and resident hours are regulated, Dr. McPherson pointed out that it’s up to each individual medical school to set the hours for their students.

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

Tweets from a black female medical student about the perils of being on call after lengthy hospital shifts was met with a stinging rebuke from the Twitter account of the Connecticut chapter of the American College of Cardiology – prompting an apology and some high-octane exchanges on medical Twitter.

In a series of Tweets, “queen of anonymous medicine” @QueenMD202X describes one friend “working 87 hours this week and 13 days straight” and a second, a third-year medical student working a 15-hour surgical shift. “That is cruel,” she writes, “15-hour shift? For what?????”

In response to a Tweet suggesting that being on call can be a valuable experience for students to know what they’re facing once they get to residency, @QueenMD202X pointed out the 15-hour shifts aren’t just a one-off.

In a now-deleted Tweet that nevertheless appears in several additional tweets as a screenshot, @ConnecticutACC replied: “You might be in the wrong field. You sound very angry probably unsuitable for patient care when your mental state is as you describe it. Emotions are contagious.”

The response from the medical and broader Twitter community was swift, with several tweets calling the chapter’s reply insensitive and racist.

In another Tweet, @BrittGratreak responded by stating: “I think institutions need to be more transparent how they basically weigh the costs & benefits of writing a memorial statement for students who die by suicide rather than investing in changing the toxic culture of medical education to prevent deaths & producing harmed physicians.”

Within hours, Connecticut-ACC issued an apology from their now-deleted account and questioned the origins of the Tweet. “We sincerely apologize for the earlier post as the views do not represent the values or beliefs of the Chapter or broader ACC. We are working to ID its origins. Burnout & well-being are critical issues [that] ACC/CCACC is working to address on behalf of members at all career stages.”

Speaking to this news organization, Connecticut-ACC president and governor Craig McPherson, MD, Yale University, New Haven, Conn., said the chapter believes its account was hacked.

“We provide limited password access to our Twitter account, and we assume, since we’ve contacted most of the individuals who had access to the current password and all of the them deny any knowledge, the account got hacked … it’s just one of those unfortunate aspects of social media,” he said.

The password was quickly changed after the chapter learned of the Tweet on Wednesday and the account has since been closed, at Dr. McPherson’s request.

“We don’t condone that kind of language, that kind of remark. It’s highly inappropriate, and I certainly agree with anyone that voiced that opinion in the Twitterstorm that followed,” he said. “But as I said at the outset, I have no control over what people say on social media once it’s out there. All we can do is apologize for the fact our Twitter feed was used as a vehicle for those comments, which we consider inappropriate.”

Asked whether he considered the remarks racist, Dr. McPherson replied: “That’s not for me to judge.”

ACC president Dipti Itchhaporia, MD, however, weighed in this afternoon with a Tweet citing the need to address clinician well-being and an inclusive workplace.

Some on Twitter recalled their own long hours as a medical student or defended the need to inculcate students in the long hours they’ll face as physicians. Others observed that neither ACC nor its Connecticut chapter addressed the issue of medical student hours in their response. Although fellow and resident hours are regulated, Dr. McPherson pointed out that it’s up to each individual medical school to set the hours for their students.

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

Tweets from a black female medical student about the perils of being on call after lengthy hospital shifts was met with a stinging rebuke from the Twitter account of the Connecticut chapter of the American College of Cardiology – prompting an apology and some high-octane exchanges on medical Twitter.

In a series of Tweets, “queen of anonymous medicine” @QueenMD202X describes one friend “working 87 hours this week and 13 days straight” and a second, a third-year medical student working a 15-hour surgical shift. “That is cruel,” she writes, “15-hour shift? For what?????”

In response to a Tweet suggesting that being on call can be a valuable experience for students to know what they’re facing once they get to residency, @QueenMD202X pointed out the 15-hour shifts aren’t just a one-off.

In a now-deleted Tweet that nevertheless appears in several additional tweets as a screenshot, @ConnecticutACC replied: “You might be in the wrong field. You sound very angry probably unsuitable for patient care when your mental state is as you describe it. Emotions are contagious.”

The response from the medical and broader Twitter community was swift, with several tweets calling the chapter’s reply insensitive and racist.

In another Tweet, @BrittGratreak responded by stating: “I think institutions need to be more transparent how they basically weigh the costs & benefits of writing a memorial statement for students who die by suicide rather than investing in changing the toxic culture of medical education to prevent deaths & producing harmed physicians.”

Within hours, Connecticut-ACC issued an apology from their now-deleted account and questioned the origins of the Tweet. “We sincerely apologize for the earlier post as the views do not represent the values or beliefs of the Chapter or broader ACC. We are working to ID its origins. Burnout & well-being are critical issues [that] ACC/CCACC is working to address on behalf of members at all career stages.”

Speaking to this news organization, Connecticut-ACC president and governor Craig McPherson, MD, Yale University, New Haven, Conn., said the chapter believes its account was hacked.

“We provide limited password access to our Twitter account, and we assume, since we’ve contacted most of the individuals who had access to the current password and all of the them deny any knowledge, the account got hacked … it’s just one of those unfortunate aspects of social media,” he said.

The password was quickly changed after the chapter learned of the Tweet on Wednesday and the account has since been closed, at Dr. McPherson’s request.

“We don’t condone that kind of language, that kind of remark. It’s highly inappropriate, and I certainly agree with anyone that voiced that opinion in the Twitterstorm that followed,” he said. “But as I said at the outset, I have no control over what people say on social media once it’s out there. All we can do is apologize for the fact our Twitter feed was used as a vehicle for those comments, which we consider inappropriate.”

Asked whether he considered the remarks racist, Dr. McPherson replied: “That’s not for me to judge.”

ACC president Dipti Itchhaporia, MD, however, weighed in this afternoon with a Tweet citing the need to address clinician well-being and an inclusive workplace.

Some on Twitter recalled their own long hours as a medical student or defended the need to inculcate students in the long hours they’ll face as physicians. Others observed that neither ACC nor its Connecticut chapter addressed the issue of medical student hours in their response. Although fellow and resident hours are regulated, Dr. McPherson pointed out that it’s up to each individual medical school to set the hours for their students.

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

For patients with coronary heart disease (CHD), following a Mediterranean diet is more effective in reducing progression of atherosclerosis than following a low-fat diet, according to new data from the CORDIOPREV randomized, controlled trial.

OksanaKiian/Getty Images

“The current study is, to our knowledge, the first to establish an effective dietary strategy for secondary cardiovascular prevention, reinforcing the fact that the Mediterranean diet rich in extra virgin olive oil (EVOO) could prevent the progression of atherosclerosis,” the study team said.

The data also show that patients with a higher atherosclerotic burden might benefit the most from the Mediterranean diet.

The study was published online Aug. 10, 2021, in Stroke.
 

Mediterranean or low fat?

“It is well established that lifestyle and dietary habits powerfully affect cardiovascular risk,” study investigator Elena M. Yubero-Serrano, PhD, with Reina Sofia University Hospital/University of Cordoba (Spain), told this news organization.

“The effectiveness of the Mediterranean diet in reducing cardiovascular risk has been seen in primary prevention. However, currently there is no consensus about a recommended dietary model for the secondary prevention of cardiovascular disease,” she said.

The Coronary Diet Intervention With Olive Oil and Cardiovascular Prevention (CORDIOPREV) study is an ongoing prospective study comparing the effects of two healthy diets for secondary prevention of cardiovascular disease (CVD) in 1002 patients.

The comparative effect of the diets in reducing CVD risk, assessed by quantification of intima-media thickness of the common carotid arteries (IMT-CC), is a key secondary endpoint of the study.

During the study, half of the patients follow a Mediterranean diet rich in EVOO, fruit and vegetables, whole grains, fish, and nuts. The other half follow a diet low in fat and rich in complex carbohydrates.

A total of 939 participants (459 in the low-fat diet group and 480 in the Mediterranean diet group) completed IMT-CC evaluation at baseline, and 809 (377 and 432, respectively) completed the IMT-CC evaluation at 5 years; 731 (335 and 396, respectively) did so at 7 years.

The Mediterranean diet significantly decreased IMT-CC both after 5 years (–0.027; P < .001) and after 7 years (–0.031 mm; P < .001), relative to baseline. In contrast, the low-fat diet did not exert any change on IMT-CC after 5 or 7 years, the researchers report.

The higher the IMT-CC at baseline, the greater the reduction in this parameter.

The Mediterranean diet also produced a greater decrease in IMT-CC and carotid plaque maximum height, compared with the low-fat diet throughout follow-up.

There were no between-group differences in carotid plaque numbers during follow-up.

“Our findings, in addition to reinforcing the clinical benefits of the Mediterranean diet, provide a beneficial dietary strategy as a clinical and therapeutic tool that could reduce the high cardiovascular recurrence in the context of secondary prevention,” Dr. Yubero-Serrano said in an interview.

Earlier data from CORDIOPREV showed that, after 1 year of eating a Mediterranean diet, compared with the low-fat diet, endothelial function was improved among patients with CHD, even those with type 2 diabetes, which was associated with a better balance of vascular homeostasis.

The Mediterranean diet may also modulate the lipid profile, particularly by increasing HDL cholesterol levels. The anti-inflammatory capacity of the Mediterranean diet could be another factor that contributes to reducing the progression of atherosclerosis, the researchers say.
 

Important study

Reached for comment, Alan Rozanski, MD, professor of medicine, Icahn School of Medicine at Mount Sinai and cardiologist at Mount Sinai Morningside, New York, said: “We know very well that lifestyle factors, diet, and exercise in particular are extremely important in promoting health, vitality, and decreasing risk for chronic diseases, including heart attack and stroke.

“But a lot of the studies depend on epidemiological work. Until now, we haven’t had important prospective studies evaluating different kinds of dietary approaches and how they affect carotid intimal thickening assessments that we can do by ultrasound. So having this kind of imaging study which shows that diet can halt progression of atherosclerosis is important,” said Dr. Rozanski.

“Changing one’s diet is extremely important and potentially beneficial in many ways, and being able to say to a patient with atherosclerosis that we have data that shows you can halt the progression of the disease can be extraordinarily encouraging to many patients,” he noted.

“When people have disease, they very often gravitate toward drugs, but continuing to emphasize lifestyle changes in these people is extremely important,” he added.

The CORDIOPREV study was supported by the Fundación Patrimonio Comunal Olivarero. Dr. Yubero-Serrano and Dr. Rozanski disclosed no relevant financial relationships.

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

For patients with coronary heart disease (CHD), following a Mediterranean diet is more effective in reducing progression of atherosclerosis than following a low-fat diet, according to new data from the CORDIOPREV randomized, controlled trial.

OksanaKiian/Getty Images

“The current study is, to our knowledge, the first to establish an effective dietary strategy for secondary cardiovascular prevention, reinforcing the fact that the Mediterranean diet rich in extra virgin olive oil (EVOO) could prevent the progression of atherosclerosis,” the study team said.

The data also show that patients with a higher atherosclerotic burden might benefit the most from the Mediterranean diet.

The study was published online Aug. 10, 2021, in Stroke.
 

Mediterranean or low fat?

“It is well established that lifestyle and dietary habits powerfully affect cardiovascular risk,” study investigator Elena M. Yubero-Serrano, PhD, with Reina Sofia University Hospital/University of Cordoba (Spain), told this news organization.

“The effectiveness of the Mediterranean diet in reducing cardiovascular risk has been seen in primary prevention. However, currently there is no consensus about a recommended dietary model for the secondary prevention of cardiovascular disease,” she said.

The Coronary Diet Intervention With Olive Oil and Cardiovascular Prevention (CORDIOPREV) study is an ongoing prospective study comparing the effects of two healthy diets for secondary prevention of cardiovascular disease (CVD) in 1002 patients.

The comparative effect of the diets in reducing CVD risk, assessed by quantification of intima-media thickness of the common carotid arteries (IMT-CC), is a key secondary endpoint of the study.

During the study, half of the patients follow a Mediterranean diet rich in EVOO, fruit and vegetables, whole grains, fish, and nuts. The other half follow a diet low in fat and rich in complex carbohydrates.

A total of 939 participants (459 in the low-fat diet group and 480 in the Mediterranean diet group) completed IMT-CC evaluation at baseline, and 809 (377 and 432, respectively) completed the IMT-CC evaluation at 5 years; 731 (335 and 396, respectively) did so at 7 years.

The Mediterranean diet significantly decreased IMT-CC both after 5 years (–0.027; P < .001) and after 7 years (–0.031 mm; P < .001), relative to baseline. In contrast, the low-fat diet did not exert any change on IMT-CC after 5 or 7 years, the researchers report.

The higher the IMT-CC at baseline, the greater the reduction in this parameter.

The Mediterranean diet also produced a greater decrease in IMT-CC and carotid plaque maximum height, compared with the low-fat diet throughout follow-up.

There were no between-group differences in carotid plaque numbers during follow-up.

“Our findings, in addition to reinforcing the clinical benefits of the Mediterranean diet, provide a beneficial dietary strategy as a clinical and therapeutic tool that could reduce the high cardiovascular recurrence in the context of secondary prevention,” Dr. Yubero-Serrano said in an interview.

Earlier data from CORDIOPREV showed that, after 1 year of eating a Mediterranean diet, compared with the low-fat diet, endothelial function was improved among patients with CHD, even those with type 2 diabetes, which was associated with a better balance of vascular homeostasis.

The Mediterranean diet may also modulate the lipid profile, particularly by increasing HDL cholesterol levels. The anti-inflammatory capacity of the Mediterranean diet could be another factor that contributes to reducing the progression of atherosclerosis, the researchers say.
 

Important study

Reached for comment, Alan Rozanski, MD, professor of medicine, Icahn School of Medicine at Mount Sinai and cardiologist at Mount Sinai Morningside, New York, said: “We know very well that lifestyle factors, diet, and exercise in particular are extremely important in promoting health, vitality, and decreasing risk for chronic diseases, including heart attack and stroke.

“But a lot of the studies depend on epidemiological work. Until now, we haven’t had important prospective studies evaluating different kinds of dietary approaches and how they affect carotid intimal thickening assessments that we can do by ultrasound. So having this kind of imaging study which shows that diet can halt progression of atherosclerosis is important,” said Dr. Rozanski.

“Changing one’s diet is extremely important and potentially beneficial in many ways, and being able to say to a patient with atherosclerosis that we have data that shows you can halt the progression of the disease can be extraordinarily encouraging to many patients,” he noted.

“When people have disease, they very often gravitate toward drugs, but continuing to emphasize lifestyle changes in these people is extremely important,” he added.

The CORDIOPREV study was supported by the Fundación Patrimonio Comunal Olivarero. Dr. Yubero-Serrano and Dr. Rozanski disclosed no relevant financial relationships.

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

For patients with coronary heart disease (CHD), following a Mediterranean diet is more effective in reducing progression of atherosclerosis than following a low-fat diet, according to new data from the CORDIOPREV randomized, controlled trial.

OksanaKiian/Getty Images

“The current study is, to our knowledge, the first to establish an effective dietary strategy for secondary cardiovascular prevention, reinforcing the fact that the Mediterranean diet rich in extra virgin olive oil (EVOO) could prevent the progression of atherosclerosis,” the study team said.

The data also show that patients with a higher atherosclerotic burden might benefit the most from the Mediterranean diet.

The study was published online Aug. 10, 2021, in Stroke.
 

Mediterranean or low fat?

“It is well established that lifestyle and dietary habits powerfully affect cardiovascular risk,” study investigator Elena M. Yubero-Serrano, PhD, with Reina Sofia University Hospital/University of Cordoba (Spain), told this news organization.

“The effectiveness of the Mediterranean diet in reducing cardiovascular risk has been seen in primary prevention. However, currently there is no consensus about a recommended dietary model for the secondary prevention of cardiovascular disease,” she said.

The Coronary Diet Intervention With Olive Oil and Cardiovascular Prevention (CORDIOPREV) study is an ongoing prospective study comparing the effects of two healthy diets for secondary prevention of cardiovascular disease (CVD) in 1002 patients.

The comparative effect of the diets in reducing CVD risk, assessed by quantification of intima-media thickness of the common carotid arteries (IMT-CC), is a key secondary endpoint of the study.

During the study, half of the patients follow a Mediterranean diet rich in EVOO, fruit and vegetables, whole grains, fish, and nuts. The other half follow a diet low in fat and rich in complex carbohydrates.

A total of 939 participants (459 in the low-fat diet group and 480 in the Mediterranean diet group) completed IMT-CC evaluation at baseline, and 809 (377 and 432, respectively) completed the IMT-CC evaluation at 5 years; 731 (335 and 396, respectively) did so at 7 years.

The Mediterranean diet significantly decreased IMT-CC both after 5 years (–0.027; P < .001) and after 7 years (–0.031 mm; P < .001), relative to baseline. In contrast, the low-fat diet did not exert any change on IMT-CC after 5 or 7 years, the researchers report.

The higher the IMT-CC at baseline, the greater the reduction in this parameter.

The Mediterranean diet also produced a greater decrease in IMT-CC and carotid plaque maximum height, compared with the low-fat diet throughout follow-up.

There were no between-group differences in carotid plaque numbers during follow-up.

“Our findings, in addition to reinforcing the clinical benefits of the Mediterranean diet, provide a beneficial dietary strategy as a clinical and therapeutic tool that could reduce the high cardiovascular recurrence in the context of secondary prevention,” Dr. Yubero-Serrano said in an interview.

Earlier data from CORDIOPREV showed that, after 1 year of eating a Mediterranean diet, compared with the low-fat diet, endothelial function was improved among patients with CHD, even those with type 2 diabetes, which was associated with a better balance of vascular homeostasis.

The Mediterranean diet may also modulate the lipid profile, particularly by increasing HDL cholesterol levels. The anti-inflammatory capacity of the Mediterranean diet could be another factor that contributes to reducing the progression of atherosclerosis, the researchers say.
 

Important study

Reached for comment, Alan Rozanski, MD, professor of medicine, Icahn School of Medicine at Mount Sinai and cardiologist at Mount Sinai Morningside, New York, said: “We know very well that lifestyle factors, diet, and exercise in particular are extremely important in promoting health, vitality, and decreasing risk for chronic diseases, including heart attack and stroke.

“But a lot of the studies depend on epidemiological work. Until now, we haven’t had important prospective studies evaluating different kinds of dietary approaches and how they affect carotid intimal thickening assessments that we can do by ultrasound. So having this kind of imaging study which shows that diet can halt progression of atherosclerosis is important,” said Dr. Rozanski.

“Changing one’s diet is extremely important and potentially beneficial in many ways, and being able to say to a patient with atherosclerosis that we have data that shows you can halt the progression of the disease can be extraordinarily encouraging to many patients,” he noted.

“When people have disease, they very often gravitate toward drugs, but continuing to emphasize lifestyle changes in these people is extremely important,” he added.

The CORDIOPREV study was supported by the Fundación Patrimonio Comunal Olivarero. Dr. Yubero-Serrano and Dr. Rozanski disclosed no relevant financial relationships.

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

A 63-year-old man undergoes cardiac bypass surgery. He is able to be extubated at 8 hours. The next morning he has a fever to 38.5° C His exam shows no redness at the surgical site, or at his IV sites. His lung exam is unremarkable. His urinalysis is without white blood cells. His white blood cell count is 8,500, and his chest x-ray shows atelectasis without other abnormalities.

What is the most likely cause of this patient’s fever? The research papers cited below suggest what it isn’t and what it might be.

One of the earliest things I was taught in my clinical years were the causes of postoperative fever, or the 5Ws, which are wind, water, wound, walk, and wonder drug.

Atelectasis was touted as the cause of early postoperative fever. This became clear fact in my medical student mind, not something that I had ever questioned.  But investigation into whether there is evidence of this shows it is only a myth. In actuality, there is scant evidence, if any, for atelectasis causing fever. Frequently, no cause of postoperative fever has been found, despite aggressive attempts to look for one.

What the research says

Fanning and colleagues prospectively looked at 537 women who were undergoing major gynecologic surgery.¹ Postoperative fever occurred in 211 of them. In 92% of these patients, no cause for fever was found.

Atelectasis is frequently seen postoperatively. Schlenker and colleagues reported that, in patients with postoperative atelectasis, temperature elevation on the first postoperative day was directly related to the degree of atelectasis, but the white blood cell count elevation was inversely related.²

In this study, atelectasis was diagnosed by auscultation, with chest x-rays ordered at the discretion of the physician. There was little correlation with the auscultatory findings and presence or absence of atelectasis in the patients who did receive chest x-rays.

Engoren did a study to prospectively evaluate 100 postoperative patients with daily chest x-rays and continuous temperature monitoring.³ Results from the day of surgery (day 0) to the second postoperative day showed an increase in presence of atelectasis from 43% on the day of surgery to 79% by day 2.

Fever, defined as temperature greater than 38° C, fell from 37% on the day of surgery to 17% by day 2. Engoren found no association between fever and degree of atelectasis.

Mavros and colleagues did a comprehensive review to determine whether there was evidence to support atelectasis causing fever.⁴ They concluded that there was no clinical evidence supporting the concept that atelectasis is associated with early postoperative fever.
 

A possible cause of fever

Mavros and colleagues’ paper suggested that early postoperative fever was caused by stress derived by surgery, which can increase the patient’s interleukin-6 levels and thermostatic set point. This was demonstrated in a small study by Wortel and colleagues, who measured IL-6 levels in the portal and peripheral blood of patients following pancreaticoduodenectomy.⁵ They found IL-6 levels correlated strongly with peak body temperature.

In conclusion, atelectasis is not a well-established cause of postoperative fever.

Dr. Paauw is professor of medicine in the division of general internal medicine at the University of Washington, Seattle, and he serves as third-year medical student clerkship director at the University of Washington. He is a member of the editorial advisory board of Internal Medicine News. Dr. Paauw has no conflicts to disclose. Contact him at imnews@mdedge.com.

References

1. Fanning J et al. Infect Dis Obstet Gynecol. 1998; 6(6):252-5 .

2. Schlenker JD and Hubay CA. Arch Surg 1973;107:846-50

3. Engoren M. Chest. 1995;107(1):81-4 .

4. Michael N et al. Chest. 2011;140(2):418-24

5. Wortel CH et al. Surgery. 1993;114(3):564-70 .

A 63-year-old man undergoes cardiac bypass surgery. He is able to be extubated at 8 hours. The next morning he has a fever to 38.5° C His exam shows no redness at the surgical site, or at his IV sites. His lung exam is unremarkable. His urinalysis is without white blood cells. His white blood cell count is 8,500, and his chest x-ray shows atelectasis without other abnormalities.

What is the most likely cause of this patient’s fever? The research papers cited below suggest what it isn’t and what it might be.

One of the earliest things I was taught in my clinical years were the causes of postoperative fever, or the 5Ws, which are wind, water, wound, walk, and wonder drug.

Atelectasis was touted as the cause of early postoperative fever. This became clear fact in my medical student mind, not something that I had ever questioned.  But investigation into whether there is evidence of this shows it is only a myth. In actuality, there is scant evidence, if any, for atelectasis causing fever. Frequently, no cause of postoperative fever has been found, despite aggressive attempts to look for one.

What the research says

Fanning and colleagues prospectively looked at 537 women who were undergoing major gynecologic surgery.¹ Postoperative fever occurred in 211 of them. In 92% of these patients, no cause for fever was found.

Atelectasis is frequently seen postoperatively. Schlenker and colleagues reported that, in patients with postoperative atelectasis, temperature elevation on the first postoperative day was directly related to the degree of atelectasis, but the white blood cell count elevation was inversely related.²

In this study, atelectasis was diagnosed by auscultation, with chest x-rays ordered at the discretion of the physician. There was little correlation with the auscultatory findings and presence or absence of atelectasis in the patients who did receive chest x-rays.

Engoren did a study to prospectively evaluate 100 postoperative patients with daily chest x-rays and continuous temperature monitoring.³ Results from the day of surgery (day 0) to the second postoperative day showed an increase in presence of atelectasis from 43% on the day of surgery to 79% by day 2.

Fever, defined as temperature greater than 38° C, fell from 37% on the day of surgery to 17% by day 2. Engoren found no association between fever and degree of atelectasis.

Mavros and colleagues did a comprehensive review to determine whether there was evidence to support atelectasis causing fever.⁴ They concluded that there was no clinical evidence supporting the concept that atelectasis is associated with early postoperative fever.
 

A possible cause of fever

Mavros and colleagues’ paper suggested that early postoperative fever was caused by stress derived by surgery, which can increase the patient’s interleukin-6 levels and thermostatic set point. This was demonstrated in a small study by Wortel and colleagues, who measured IL-6 levels in the portal and peripheral blood of patients following pancreaticoduodenectomy.⁵ They found IL-6 levels correlated strongly with peak body temperature.

In conclusion, atelectasis is not a well-established cause of postoperative fever.

Dr. Paauw is professor of medicine in the division of general internal medicine at the University of Washington, Seattle, and he serves as third-year medical student clerkship director at the University of Washington. He is a member of the editorial advisory board of Internal Medicine News. Dr. Paauw has no conflicts to disclose. Contact him at imnews@mdedge.com.

References

1. Fanning J et al. Infect Dis Obstet Gynecol. 1998; 6(6):252-5 .

2. Schlenker JD and Hubay CA. Arch Surg 1973;107:846-50

3. Engoren M. Chest. 1995;107(1):81-4 .

4. Michael N et al. Chest. 2011;140(2):418-24

5. Wortel CH et al. Surgery. 1993;114(3):564-70 .

A 63-year-old man undergoes cardiac bypass surgery. He is able to be extubated at 8 hours. The next morning he has a fever to 38.5° C His exam shows no redness at the surgical site, or at his IV sites. His lung exam is unremarkable. His urinalysis is without white blood cells. His white blood cell count is 8,500, and his chest x-ray shows atelectasis without other abnormalities.

What is the most likely cause of this patient’s fever? The research papers cited below suggest what it isn’t and what it might be.

One of the earliest things I was taught in my clinical years were the causes of postoperative fever, or the 5Ws, which are wind, water, wound, walk, and wonder drug.

Atelectasis was touted as the cause of early postoperative fever. This became clear fact in my medical student mind, not something that I had ever questioned.  But investigation into whether there is evidence of this shows it is only a myth. In actuality, there is scant evidence, if any, for atelectasis causing fever. Frequently, no cause of postoperative fever has been found, despite aggressive attempts to look for one.

What the research says

Fanning and colleagues prospectively looked at 537 women who were undergoing major gynecologic surgery.¹ Postoperative fever occurred in 211 of them. In 92% of these patients, no cause for fever was found.

Atelectasis is frequently seen postoperatively. Schlenker and colleagues reported that, in patients with postoperative atelectasis, temperature elevation on the first postoperative day was directly related to the degree of atelectasis, but the white blood cell count elevation was inversely related.²

In this study, atelectasis was diagnosed by auscultation, with chest x-rays ordered at the discretion of the physician. There was little correlation with the auscultatory findings and presence or absence of atelectasis in the patients who did receive chest x-rays.

Engoren did a study to prospectively evaluate 100 postoperative patients with daily chest x-rays and continuous temperature monitoring.³ Results from the day of surgery (day 0) to the second postoperative day showed an increase in presence of atelectasis from 43% on the day of surgery to 79% by day 2.

Fever, defined as temperature greater than 38° C, fell from 37% on the day of surgery to 17% by day 2. Engoren found no association between fever and degree of atelectasis.

Mavros and colleagues did a comprehensive review to determine whether there was evidence to support atelectasis causing fever.⁴ They concluded that there was no clinical evidence supporting the concept that atelectasis is associated with early postoperative fever.
 

A possible cause of fever

Mavros and colleagues’ paper suggested that early postoperative fever was caused by stress derived by surgery, which can increase the patient’s interleukin-6 levels and thermostatic set point. This was demonstrated in a small study by Wortel and colleagues, who measured IL-6 levels in the portal and peripheral blood of patients following pancreaticoduodenectomy.⁵ They found IL-6 levels correlated strongly with peak body temperature.

In conclusion, atelectasis is not a well-established cause of postoperative fever.

Dr. Paauw is professor of medicine in the division of general internal medicine at the University of Washington, Seattle, and he serves as third-year medical student clerkship director at the University of Washington. He is a member of the editorial advisory board of Internal Medicine News. Dr. Paauw has no conflicts to disclose. Contact him at imnews@mdedge.com.

References

1. Fanning J et al. Infect Dis Obstet Gynecol. 1998; 6(6):252-5 .

2. Schlenker JD and Hubay CA. Arch Surg 1973;107:846-50

3. Engoren M. Chest. 1995;107(1):81-4 .

4. Michael N et al. Chest. 2011;140(2):418-24

5. Wortel CH et al. Surgery. 1993;114(3):564-70 .

The U.S. Food and Drug Administration approved empagliflozin (Jardiance) as a treatment for adults with heart failure with reduced ejection fraction (HFrEF) regardless of whether patients have diabetes on Aug. 18, making it the second agent from the sodium-glucose transporter 2 inhibitor class to received this indication.

Empagliflozin first received FDA marketing approval in 2014 for improving glycemic control in patients with type 2 diabetes, and in 2016 the agency added a second indication of reducing cardiovascular death in patients with type 2 diabetes and cardiovascular disease. The newly granted indication for patients with HFrEF without regard to glycemic status was for reducing the risk for cardiovascular death and hospitalization for heart failure, according to a statement from Boehringer Ingelheim and Lilly, the two companies that together market empagliflozin.

The statement also said that the approval allowed for empagliflozin treatment in patients with HFrEF and an estimated glomerular filtration rate (eGFR) as low as 20 mL/min per 1.73 m², in contrast to its indication for improving glycemic control in patients with type 2 diabetes that limits use to patients with an eGFR of at least 30 mL per 1.73 m².


EMPEROR-Reduced results drive approval

The FDA based its decision on results from the EMPEROR-Reduced study, first reported in August 2020, that showed treatment of patients with HFrEF with empagliflozin on top of standard therapy for a median of 16 months cut the incidence of cardiovascular death or hospitalization for worsening heart failure by 25% relative to placebo, and by an absolute 5.3%, compared with placebo-treated patients.

Patients enrolled in EMPEROR-Reduced had chronic heart failure in New York Heart Association functional class II-IV and with a left ventricular ejection fraction of 40% or less, the standard ejection fraction criterion for defining HFrEF. Half the enrolled patients had diabetes, and analysis showed no heterogeneity in the primary outcome response based on diabetes status at enrollment.


Empagliflozin joins dapagliflozin for treating HFrEF

Dapagliflozin (Farxiga) was the first agent from the SGLT2 inhibitor class to receive an FDA indication, in 2020, for treating patients with HFrEF regardless of their diabetes status, a decision based on results from the DAPA-HF trial. Results from DAPA-HF showed that treatment with dapagliflozin in patients with HFrEF for a median of 18 months led to a 26% relative reduction in the incidence of cardiovascular death or worsening heart failure and a 4.9% absolute reduction, compared with placebo when added to standard treatment. DAPA-HF enrolled patients using similar criteria to EMPEROR-Reduced, and 42% of enrolled patients had diabetes with no heterogeneity in the primary outcome related to baseline diabetes status.

Subsequent to the report of results from the EMPEROR-Reduced trial nearly a year ago, heart failure experts declared that treatment with an agent from the SGLT2 inhibitor class had become a “new pillar of foundational therapy for HFrEF,” and they urged rapid initiation of an SGLT2 inhibitor (along with other appropriate medications) at the time of initial diagnosis of HFrEF.

mzoler@mdedge.com

The U.S. Food and Drug Administration approved empagliflozin (Jardiance) as a treatment for adults with heart failure with reduced ejection fraction (HFrEF) regardless of whether patients have diabetes on Aug. 18, making it the second agent from the sodium-glucose transporter 2 inhibitor class to received this indication.

Empagliflozin first received FDA marketing approval in 2014 for improving glycemic control in patients with type 2 diabetes, and in 2016 the agency added a second indication of reducing cardiovascular death in patients with type 2 diabetes and cardiovascular disease. The newly granted indication for patients with HFrEF without regard to glycemic status was for reducing the risk for cardiovascular death and hospitalization for heart failure, according to a statement from Boehringer Ingelheim and Lilly, the two companies that together market empagliflozin.

The statement also said that the approval allowed for empagliflozin treatment in patients with HFrEF and an estimated glomerular filtration rate (eGFR) as low as 20 mL/min per 1.73 m², in contrast to its indication for improving glycemic control in patients with type 2 diabetes that limits use to patients with an eGFR of at least 30 mL per 1.73 m².


EMPEROR-Reduced results drive approval

The FDA based its decision on results from the EMPEROR-Reduced study, first reported in August 2020, that showed treatment of patients with HFrEF with empagliflozin on top of standard therapy for a median of 16 months cut the incidence of cardiovascular death or hospitalization for worsening heart failure by 25% relative to placebo, and by an absolute 5.3%, compared with placebo-treated patients.

Patients enrolled in EMPEROR-Reduced had chronic heart failure in New York Heart Association functional class II-IV and with a left ventricular ejection fraction of 40% or less, the standard ejection fraction criterion for defining HFrEF. Half the enrolled patients had diabetes, and analysis showed no heterogeneity in the primary outcome response based on diabetes status at enrollment.


Empagliflozin joins dapagliflozin for treating HFrEF

Dapagliflozin (Farxiga) was the first agent from the SGLT2 inhibitor class to receive an FDA indication, in 2020, for treating patients with HFrEF regardless of their diabetes status, a decision based on results from the DAPA-HF trial. Results from DAPA-HF showed that treatment with dapagliflozin in patients with HFrEF for a median of 18 months led to a 26% relative reduction in the incidence of cardiovascular death or worsening heart failure and a 4.9% absolute reduction, compared with placebo when added to standard treatment. DAPA-HF enrolled patients using similar criteria to EMPEROR-Reduced, and 42% of enrolled patients had diabetes with no heterogeneity in the primary outcome related to baseline diabetes status.

Subsequent to the report of results from the EMPEROR-Reduced trial nearly a year ago, heart failure experts declared that treatment with an agent from the SGLT2 inhibitor class had become a “new pillar of foundational therapy for HFrEF,” and they urged rapid initiation of an SGLT2 inhibitor (along with other appropriate medications) at the time of initial diagnosis of HFrEF.

mzoler@mdedge.com

The U.S. Food and Drug Administration approved empagliflozin (Jardiance) as a treatment for adults with heart failure with reduced ejection fraction (HFrEF) regardless of whether patients have diabetes on Aug. 18, making it the second agent from the sodium-glucose transporter 2 inhibitor class to received this indication.

Empagliflozin first received FDA marketing approval in 2014 for improving glycemic control in patients with type 2 diabetes, and in 2016 the agency added a second indication of reducing cardiovascular death in patients with type 2 diabetes and cardiovascular disease. The newly granted indication for patients with HFrEF without regard to glycemic status was for reducing the risk for cardiovascular death and hospitalization for heart failure, according to a statement from Boehringer Ingelheim and Lilly, the two companies that together market empagliflozin.

The statement also said that the approval allowed for empagliflozin treatment in patients with HFrEF and an estimated glomerular filtration rate (eGFR) as low as 20 mL/min per 1.73 m², in contrast to its indication for improving glycemic control in patients with type 2 diabetes that limits use to patients with an eGFR of at least 30 mL per 1.73 m².


EMPEROR-Reduced results drive approval

The FDA based its decision on results from the EMPEROR-Reduced study, first reported in August 2020, that showed treatment of patients with HFrEF with empagliflozin on top of standard therapy for a median of 16 months cut the incidence of cardiovascular death or hospitalization for worsening heart failure by 25% relative to placebo, and by an absolute 5.3%, compared with placebo-treated patients.

Patients enrolled in EMPEROR-Reduced had chronic heart failure in New York Heart Association functional class II-IV and with a left ventricular ejection fraction of 40% or less, the standard ejection fraction criterion for defining HFrEF. Half the enrolled patients had diabetes, and analysis showed no heterogeneity in the primary outcome response based on diabetes status at enrollment.


Empagliflozin joins dapagliflozin for treating HFrEF

Dapagliflozin (Farxiga) was the first agent from the SGLT2 inhibitor class to receive an FDA indication, in 2020, for treating patients with HFrEF regardless of their diabetes status, a decision based on results from the DAPA-HF trial. Results from DAPA-HF showed that treatment with dapagliflozin in patients with HFrEF for a median of 18 months led to a 26% relative reduction in the incidence of cardiovascular death or worsening heart failure and a 4.9% absolute reduction, compared with placebo when added to standard treatment. DAPA-HF enrolled patients using similar criteria to EMPEROR-Reduced, and 42% of enrolled patients had diabetes with no heterogeneity in the primary outcome related to baseline diabetes status.

Subsequent to the report of results from the EMPEROR-Reduced trial nearly a year ago, heart failure experts declared that treatment with an agent from the SGLT2 inhibitor class had become a “new pillar of foundational therapy for HFrEF,” and they urged rapid initiation of an SGLT2 inhibitor (along with other appropriate medications) at the time of initial diagnosis of HFrEF.

mzoler@mdedge.com

Spending more free time seated combined with engaging in low physical activity is associated with an increased risk of stroke in adults aged between 40 and 60 years, according to a new analysis.

While the risk of stroke increased more than fourfold among sedentary people under the age of 60, no significant increase in risk was observed among older individuals, according to the study based on self-reported data from more than 140,000 people. This highlights the need for relevant public health messaging directed at younger people, reported lead author, Raed A. Joundi, MD, DPhil, a stroke fellow at the University of Calgary (Alta.), and colleagues, in the paper published in Stroke.

“Sedentary time has increased over the past 2 decades in the United States and Canada, particularly in the young, raising the importance of characterizing its effect on long-term health , ” the investigators wrote. “A better understanding of the risk of sedentary time specific to stroke may be important for public health campaigns to reduce sedentary behavior.” Dr. Joundi and colleagues reviewed data from the Canadian Community Health Survey, including 143,180 healthy individuals without baseline history of cancer, heart disease, or stroke. Those under the age of 40 years were also excluded from the analysis.

Excess sedentary leisure time was defined as 8 or more hours of sedentary leisure time per day, whereas low physical activity was defined as less than 3.5 metabolic equivalent hours per week. The analysis also included a range of demographic and medical covariates, such as age, sex, marital status, smoking status, presence of hypertension, and others.

After a median follow-up of 9.4 years, 2,965 stroke events occurred, with a median time from survey response of 5.6 years. Risk of stroke among individuals aged younger than 60 years who engaged in low physical activity and excess sedentary leisure time was increased 4.5-fold, compared with individuals with low physical activity who were sedentary less than 4 hours per day (fully adjusted hazard ratio, 4.50; 95% confidence interval, 1.64-12.3).
 

Findings highlight benefits of physical activity

Similar risk elevations were not observed among individuals aged 60-79 years, or those older than 80. And among people younger than 60, high physical activity appeared to eliminate the additional risk imposed by excess sedentary leisure time.

“Sedentary time is associated with higher risk of stroke in inactive individuals, but not an active individual, ” Dr. Joundi said in an interview. “So it suggests that there’s two ways to lower risk: One would be to lower your sedentary time, and the other would be to engage in physical activity.”

These interpretations are speculative, Dr. Joundi cautioned, as the study was not interventional. Even so, he said that the findings “bring the spotlight back on physical activity,” thereby aligning with previous research.

“The more you exercise, the more that relationship between sedentary time and poor health outcomes is blunted, and in fact, can be completely negated with enough physical activity,” he said.

How exactly physical activity offers such protection remains unclear, Dr. Joundi added. He speculated that regularity of exercise may be key, with each session counteracting the adverse effects of prolonged sedentary time, which may include reduced blood flow, increased insulin resistance, and inflammatory changes that can affect blood vessels.

“This study is particularly a message for younger individuals,” Dr. Joundi said, suggesting that the findings may alter behavior, as many people have witnessed, or are aware of, the long-term impacts of stroke.

“There’s a sort of social or cognitive aversion to stroke, I think, in the general population, because of how disabling it can be, and how it can lower your quality of life,” he said.
 

Subtle lifestyle changes may be enough.

For those aiming to lower their risk of stroke, Dr. Joundi suggested that subtle lifestyle changes may be enough.

“Ultimately, what we saw is that even minimal amounts of physical activity – walking 3 hours a week, for example – could blunt the impact of sedentary time,” he said. “Doing what you can, even if it’s a small amount, tends to be quite meaningful over a long period of time.”

Daniel T. Lackland, DrPH, professor of epidemiology in the department of neurology at the Medical University of South Carolina, Charleston, offered a similar takeaway, noting that small efforts can lead to great benefits.

“Less intense activity is still better than being sedentary,” he said in an interview. “For many people, if you do get up and you just walk around, move your arms around – do any kind of movement – that’s better than being sedentary.”

Dr. Lackland applauded the practicality of studying sedentary leisure time, versus overall leisure time, as many people can’t control their work environment.

“You can’t do very much about how you work your job,” Dr. Lackland said. “Sometimes we have to sit, and I guess there are things you can do – you can put a treadmill instead of a chair and that kind of thing – but more often than not, you don’t really have that choice to do something. With leisure time, though, you’re in full control. And so what do you do with your leisure time? Do you sit and watch TV, or do you engage in some type of activity? Not necessarily aerobic activity, but some type of activity that would not let you be sedentary. You want to be active as much as you possibly can.”

Dr. Joundi disclosed grant support from the Canadian Institutes of Health Research. The other investigators and Dr. Lackland reported no relevant disclosures.

Spending more free time seated combined with engaging in low physical activity is associated with an increased risk of stroke in adults aged between 40 and 60 years, according to a new analysis.

While the risk of stroke increased more than fourfold among sedentary people under the age of 60, no significant increase in risk was observed among older individuals, according to the study based on self-reported data from more than 140,000 people. This highlights the need for relevant public health messaging directed at younger people, reported lead author, Raed A. Joundi, MD, DPhil, a stroke fellow at the University of Calgary (Alta.), and colleagues, in the paper published in Stroke.

“Sedentary time has increased over the past 2 decades in the United States and Canada, particularly in the young, raising the importance of characterizing its effect on long-term health , ” the investigators wrote. “A better understanding of the risk of sedentary time specific to stroke may be important for public health campaigns to reduce sedentary behavior.” Dr. Joundi and colleagues reviewed data from the Canadian Community Health Survey, including 143,180 healthy individuals without baseline history of cancer, heart disease, or stroke. Those under the age of 40 years were also excluded from the analysis.

Excess sedentary leisure time was defined as 8 or more hours of sedentary leisure time per day, whereas low physical activity was defined as less than 3.5 metabolic equivalent hours per week. The analysis also included a range of demographic and medical covariates, such as age, sex, marital status, smoking status, presence of hypertension, and others.

After a median follow-up of 9.4 years, 2,965 stroke events occurred, with a median time from survey response of 5.6 years. Risk of stroke among individuals aged younger than 60 years who engaged in low physical activity and excess sedentary leisure time was increased 4.5-fold, compared with individuals with low physical activity who were sedentary less than 4 hours per day (fully adjusted hazard ratio, 4.50; 95% confidence interval, 1.64-12.3).
 

Findings highlight benefits of physical activity

Similar risk elevations were not observed among individuals aged 60-79 years, or those older than 80. And among people younger than 60, high physical activity appeared to eliminate the additional risk imposed by excess sedentary leisure time.

“Sedentary time is associated with higher risk of stroke in inactive individuals, but not an active individual, ” Dr. Joundi said in an interview. “So it suggests that there’s two ways to lower risk: One would be to lower your sedentary time, and the other would be to engage in physical activity.”

These interpretations are speculative, Dr. Joundi cautioned, as the study was not interventional. Even so, he said that the findings “bring the spotlight back on physical activity,” thereby aligning with previous research.

“The more you exercise, the more that relationship between sedentary time and poor health outcomes is blunted, and in fact, can be completely negated with enough physical activity,” he said.

How exactly physical activity offers such protection remains unclear, Dr. Joundi added. He speculated that regularity of exercise may be key, with each session counteracting the adverse effects of prolonged sedentary time, which may include reduced blood flow, increased insulin resistance, and inflammatory changes that can affect blood vessels.

“This study is particularly a message for younger individuals,” Dr. Joundi said, suggesting that the findings may alter behavior, as many people have witnessed, or are aware of, the long-term impacts of stroke.

“There’s a sort of social or cognitive aversion to stroke, I think, in the general population, because of how disabling it can be, and how it can lower your quality of life,” he said.
 

Subtle lifestyle changes may be enough.

For those aiming to lower their risk of stroke, Dr. Joundi suggested that subtle lifestyle changes may be enough.

“Ultimately, what we saw is that even minimal amounts of physical activity – walking 3 hours a week, for example – could blunt the impact of sedentary time,” he said. “Doing what you can, even if it’s a small amount, tends to be quite meaningful over a long period of time.”

Daniel T. Lackland, DrPH, professor of epidemiology in the department of neurology at the Medical University of South Carolina, Charleston, offered a similar takeaway, noting that small efforts can lead to great benefits.

“Less intense activity is still better than being sedentary,” he said in an interview. “For many people, if you do get up and you just walk around, move your arms around – do any kind of movement – that’s better than being sedentary.”

Dr. Lackland applauded the practicality of studying sedentary leisure time, versus overall leisure time, as many people can’t control their work environment.

“You can’t do very much about how you work your job,” Dr. Lackland said. “Sometimes we have to sit, and I guess there are things you can do – you can put a treadmill instead of a chair and that kind of thing – but more often than not, you don’t really have that choice to do something. With leisure time, though, you’re in full control. And so what do you do with your leisure time? Do you sit and watch TV, or do you engage in some type of activity? Not necessarily aerobic activity, but some type of activity that would not let you be sedentary. You want to be active as much as you possibly can.”

Dr. Joundi disclosed grant support from the Canadian Institutes of Health Research. The other investigators and Dr. Lackland reported no relevant disclosures.

Spending more free time seated combined with engaging in low physical activity is associated with an increased risk of stroke in adults aged between 40 and 60 years, according to a new analysis.

While the risk of stroke increased more than fourfold among sedentary people under the age of 60, no significant increase in risk was observed among older individuals, according to the study based on self-reported data from more than 140,000 people. This highlights the need for relevant public health messaging directed at younger people, reported lead author, Raed A. Joundi, MD, DPhil, a stroke fellow at the University of Calgary (Alta.), and colleagues, in the paper published in Stroke.

“Sedentary time has increased over the past 2 decades in the United States and Canada, particularly in the young, raising the importance of characterizing its effect on long-term health , ” the investigators wrote. “A better understanding of the risk of sedentary time specific to stroke may be important for public health campaigns to reduce sedentary behavior.” Dr. Joundi and colleagues reviewed data from the Canadian Community Health Survey, including 143,180 healthy individuals without baseline history of cancer, heart disease, or stroke. Those under the age of 40 years were also excluded from the analysis.

Excess sedentary leisure time was defined as 8 or more hours of sedentary leisure time per day, whereas low physical activity was defined as less than 3.5 metabolic equivalent hours per week. The analysis also included a range of demographic and medical covariates, such as age, sex, marital status, smoking status, presence of hypertension, and others.

After a median follow-up of 9.4 years, 2,965 stroke events occurred, with a median time from survey response of 5.6 years. Risk of stroke among individuals aged younger than 60 years who engaged in low physical activity and excess sedentary leisure time was increased 4.5-fold, compared with individuals with low physical activity who were sedentary less than 4 hours per day (fully adjusted hazard ratio, 4.50; 95% confidence interval, 1.64-12.3).
 

Findings highlight benefits of physical activity

Similar risk elevations were not observed among individuals aged 60-79 years, or those older than 80. And among people younger than 60, high physical activity appeared to eliminate the additional risk imposed by excess sedentary leisure time.

“Sedentary time is associated with higher risk of stroke in inactive individuals, but not an active individual, ” Dr. Joundi said in an interview. “So it suggests that there’s two ways to lower risk: One would be to lower your sedentary time, and the other would be to engage in physical activity.”

These interpretations are speculative, Dr. Joundi cautioned, as the study was not interventional. Even so, he said that the findings “bring the spotlight back on physical activity,” thereby aligning with previous research.

“The more you exercise, the more that relationship between sedentary time and poor health outcomes is blunted, and in fact, can be completely negated with enough physical activity,” he said.

How exactly physical activity offers such protection remains unclear, Dr. Joundi added. He speculated that regularity of exercise may be key, with each session counteracting the adverse effects of prolonged sedentary time, which may include reduced blood flow, increased insulin resistance, and inflammatory changes that can affect blood vessels.

“This study is particularly a message for younger individuals,” Dr. Joundi said, suggesting that the findings may alter behavior, as many people have witnessed, or are aware of, the long-term impacts of stroke.

“There’s a sort of social or cognitive aversion to stroke, I think, in the general population, because of how disabling it can be, and how it can lower your quality of life,” he said.
 

Subtle lifestyle changes may be enough.

For those aiming to lower their risk of stroke, Dr. Joundi suggested that subtle lifestyle changes may be enough.

“Ultimately, what we saw is that even minimal amounts of physical activity – walking 3 hours a week, for example – could blunt the impact of sedentary time,” he said. “Doing what you can, even if it’s a small amount, tends to be quite meaningful over a long period of time.”

Daniel T. Lackland, DrPH, professor of epidemiology in the department of neurology at the Medical University of South Carolina, Charleston, offered a similar takeaway, noting that small efforts can lead to great benefits.

“Less intense activity is still better than being sedentary,” he said in an interview. “For many people, if you do get up and you just walk around, move your arms around – do any kind of movement – that’s better than being sedentary.”

Dr. Lackland applauded the practicality of studying sedentary leisure time, versus overall leisure time, as many people can’t control their work environment.

“You can’t do very much about how you work your job,” Dr. Lackland said. “Sometimes we have to sit, and I guess there are things you can do – you can put a treadmill instead of a chair and that kind of thing – but more often than not, you don’t really have that choice to do something. With leisure time, though, you’re in full control. And so what do you do with your leisure time? Do you sit and watch TV, or do you engage in some type of activity? Not necessarily aerobic activity, but some type of activity that would not let you be sedentary. You want to be active as much as you possibly can.”

Dr. Joundi disclosed grant support from the Canadian Institutes of Health Research. The other investigators and Dr. Lackland reported no relevant disclosures.

The Food and Drug Administration has approved the Amplatzer Amulet left atrial appendage occluder (Abbott) to treat people with nonvalvular atrial fibrillation who are at increased risk for stroke and systemic embolism.

The Amulet and its competitor, Boston Scientific’s Watchman, are minimally invasive devices used to close off the left atrial appendage (LAA), an area where blood clots tend to form in people with atrial fibrillation.

Amulet uses dual-seal technology to completely and immediately seal the LAA, the company says, whereas the other minimally invasive solution uses a single component to seal the LAA that requires blood-thinning drugs to heal and additional patient monitoring. The Amulet also has the widest range of occluder sizes on the market and is recapturable and repositionable to ensure optimal placement.

“As the world’s population continues to age, we’re seeing a surge in atrial fibrillation cases, and with that comes increased risk of stroke. The approval of Abbott’s Amulet device provides physicians with a treatment option that reduces the risk of stroke and eliminates the need for blood-thinning medication immediately after the procedure, which is incredibly valuable given the bleeding risks associated with these medicines,” Dhanunjaya Lakkireddy, MD, Kansas City Heart Rhythm Institute at HCA Midwest Health, Overland Park, Kan., and principal investigator for the study that led to FDA approval, said in a news release from Abbott.

The FDA approval is supported by findings from the global Amulet IDE trial, a head-to-head comparison of the Amulet and Watchman devices in 1,878 participants with nonvalvular atrial fibrillation. The results will be presented virtually on Aug. 30 at the 2021 annual congress of the European Society of Cardiology.

The Amplatzer Amulet received CE Mark designation in 2013 and is approved for use in more than 80 countries, including in Australia, Canada, and European countries.

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

The Food and Drug Administration has approved the Amplatzer Amulet left atrial appendage occluder (Abbott) to treat people with nonvalvular atrial fibrillation who are at increased risk for stroke and systemic embolism.

The Amulet and its competitor, Boston Scientific’s Watchman, are minimally invasive devices used to close off the left atrial appendage (LAA), an area where blood clots tend to form in people with atrial fibrillation.

Amulet uses dual-seal technology to completely and immediately seal the LAA, the company says, whereas the other minimally invasive solution uses a single component to seal the LAA that requires blood-thinning drugs to heal and additional patient monitoring. The Amulet also has the widest range of occluder sizes on the market and is recapturable and repositionable to ensure optimal placement.

“As the world’s population continues to age, we’re seeing a surge in atrial fibrillation cases, and with that comes increased risk of stroke. The approval of Abbott’s Amulet device provides physicians with a treatment option that reduces the risk of stroke and eliminates the need for blood-thinning medication immediately after the procedure, which is incredibly valuable given the bleeding risks associated with these medicines,” Dhanunjaya Lakkireddy, MD, Kansas City Heart Rhythm Institute at HCA Midwest Health, Overland Park, Kan., and principal investigator for the study that led to FDA approval, said in a news release from Abbott.

The FDA approval is supported by findings from the global Amulet IDE trial, a head-to-head comparison of the Amulet and Watchman devices in 1,878 participants with nonvalvular atrial fibrillation. The results will be presented virtually on Aug. 30 at the 2021 annual congress of the European Society of Cardiology.

The Amplatzer Amulet received CE Mark designation in 2013 and is approved for use in more than 80 countries, including in Australia, Canada, and European countries.

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

The Food and Drug Administration has approved the Amplatzer Amulet left atrial appendage occluder (Abbott) to treat people with nonvalvular atrial fibrillation who are at increased risk for stroke and systemic embolism.

The Amulet and its competitor, Boston Scientific’s Watchman, are minimally invasive devices used to close off the left atrial appendage (LAA), an area where blood clots tend to form in people with atrial fibrillation.

Amulet uses dual-seal technology to completely and immediately seal the LAA, the company says, whereas the other minimally invasive solution uses a single component to seal the LAA that requires blood-thinning drugs to heal and additional patient monitoring. The Amulet also has the widest range of occluder sizes on the market and is recapturable and repositionable to ensure optimal placement.

“As the world’s population continues to age, we’re seeing a surge in atrial fibrillation cases, and with that comes increased risk of stroke. The approval of Abbott’s Amulet device provides physicians with a treatment option that reduces the risk of stroke and eliminates the need for blood-thinning medication immediately after the procedure, which is incredibly valuable given the bleeding risks associated with these medicines,” Dhanunjaya Lakkireddy, MD, Kansas City Heart Rhythm Institute at HCA Midwest Health, Overland Park, Kan., and principal investigator for the study that led to FDA approval, said in a news release from Abbott.

The FDA approval is supported by findings from the global Amulet IDE trial, a head-to-head comparison of the Amulet and Watchman devices in 1,878 participants with nonvalvular atrial fibrillation. The results will be presented virtually on Aug. 30 at the 2021 annual congress of the European Society of Cardiology.

The Amplatzer Amulet received CE Mark designation in 2013 and is approved for use in more than 80 countries, including in Australia, Canada, and European countries.

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

REFERENCES

1. Unger T, Borghi C, Charchar F, et al. 2020 International Society of Hypertension global hypertension practice guidelines. Hypertension. 2020;75:1334-1357. doi: 10.1161/HYPERTENSIONAHA.120.15026
2. Whelton PK, Carey RM, Aronow WS, et al. 2017 ACC/AHA/AAPA/ABC/ACPM/AGS/APhA/ASH/ASPC/NMA/PCNA guideline for the prevention, detection, evaluation, and management of high blood pressure in adults: a report of the American College of Cardiology/American Heart Association Task Force on Clinical Practice Guidelines. J Am Coll Cardiol. 2018;71:e127-e248.
3. US Preventive Services Task Force. Screening for hypertension in adults: US Preventive Services Task Force reaffirmation recommendation statement. JAMA. 2021;325:1650-1656. doi: 10.1001/jama.2021.4987

REFERENCES

1. Unger T, Borghi C, Charchar F, et al. 2020 International Society of Hypertension global hypertension practice guidelines. Hypertension. 2020;75:1334-1357. doi: 10.1161/HYPERTENSIONAHA.120.15026
2. Whelton PK, Carey RM, Aronow WS, et al. 2017 ACC/AHA/AAPA/ABC/ACPM/AGS/APhA/ASH/ASPC/NMA/PCNA guideline for the prevention, detection, evaluation, and management of high blood pressure in adults: a report of the American College of Cardiology/American Heart Association Task Force on Clinical Practice Guidelines. J Am Coll Cardiol. 2018;71:e127-e248.
3. US Preventive Services Task Force. Screening for hypertension in adults: US Preventive Services Task Force reaffirmation recommendation statement. JAMA. 2021;325:1650-1656. doi: 10.1001/jama.2021.4987

REFERENCES

1. Unger T, Borghi C, Charchar F, et al. 2020 International Society of Hypertension global hypertension practice guidelines. Hypertension. 2020;75:1334-1357. doi: 10.1161/HYPERTENSIONAHA.120.15026
2. Whelton PK, Carey RM, Aronow WS, et al. 2017 ACC/AHA/AAPA/ABC/ACPM/AGS/APhA/ASH/ASPC/NMA/PCNA guideline for the prevention, detection, evaluation, and management of high blood pressure in adults: a report of the American College of Cardiology/American Heart Association Task Force on Clinical Practice Guidelines. J Am Coll Cardiol. 2018;71:e127-e248.
3. US Preventive Services Task Force. Screening for hypertension in adults: US Preventive Services Task Force reaffirmation recommendation statement. JAMA. 2021;325:1650-1656. doi: 10.1001/jama.2021.4987

Case

A 65-year-old woman presents to the emergency department with a chief complaint of shortness of breath for 3 days. Medical history is notable for moderate chronic obstructive pulmonary disorder, systolic heart failure with last known ejection fraction (EF) of 35% and type 2 diabetes complicated by hyperglycemia when on steroids. You are talking the case over with colleagues and they suggest point-of-care ultrasound (POCUS) would be useful in her case.
 

Brief overview of the issue

Once mainly used by ED and critical care physicians, POCUS is now a tool that many hospitalists are using at the bedside. POCUS differs from traditional comprehensive ultrasounds in the following ways: POCUS is designed to answer a specific clinical question (as opposed to evaluating all organs in a specific region), POCUS exams are performed by the clinician who is formulating the clinical question (as opposed to by a consultative service such as cardiology and radiology), and POCUS can evaluate multiple organ systems (such as by evaluating a patient’s heart, lungs, and inferior vena cava to determine the etiology of hypoxia).

Hospitalist use of POCUS may include guiding procedures, aiding in diagnosis, and assessing effectiveness of treatment. Many high-quality studies have been published that support the use of POCUS and have proven that POCUS can decrease medical errors, help reach diagnoses in a more expedited fashion, and complement or replace more advanced imaging.

A challenge of POCUS is that it is user dependent and there are no established standards for hospitalists in POCUS training. As the Society of Hospital Medicine position statement on POCUS points out, there is a significant difference between skill levels required to obtain a certificate of completion for POCUS training and a certificate of competency in POCUS. Therefore, it is recommended hospitalists work with local credentialing committees to delineate the requirements for POCUS use.
 

Overview of the data

POCUS for initial assessment and diagnosis of heart failure (HF)

Use of POCUS in cases of suspected HF includes examination of the heart, lungs, and inferior vena cava (IVC). Cardiac ultrasound provides an estimated ejection fraction. Lung ultrasound (LUS) functions to examine for B lines and pleural effusions. The presence of more than three B lines per thoracic zone bilaterally suggests cardiogenic pulmonary edema. Scanning the IVC provides a noninvasive way to assess volume status and is especially helpful when body habitus prevents accurate assessment of jugular venous pressure.

Several studies have addressed the utility of bedside ultrasound in the initial assessment or diagnosis of acute decompensated heart failure (ADHF) in patients presenting with dyspnea in emergency or inpatient settings. Positive B lines are a useful finding, with high sensitivities, high specificities, and positive likelihood ratios. One large multicenter prospective study found LUS to have a sensitivity of 90.5%, specificity of 93.5%, and positive and negative LRs of 14.0 and 0.10, respectively.¹ Another large multicenter prospective cohort study showed that LUS was more sensitive and more specific than chest x-ray (CXR) and brain natriuretic peptide in detecting ADHF.² Additional POCUS findings that have shown relatively high sensitivities and specificities in the initial diagnosis of ADHF include pleural effusion, reduced left ventricular ejection fraction (LVEF), increased left ventricular end-diastolic dimension, and jugular venous distention.

Data also exists on assessments of ADHF using combinations of POCUS findings; for example, lung and cardiac ultrasound (LuCUS) protocols include an evaluation for B lines, assessment of IVC size and collapsibility, and determination of LVEF, although this has mainly been examined in ED patients. For patients who presented to the ED with undifferentiated dyspnea, one such study showed a specificity of 100% when a LuCUS protocol was used to diagnose ADHF while another study showed that the use of a LuCUS protocol changed management in 47% of patients.^3,4 Of note, although each LuCUS protocol integrated the use of lung findings, IVC collapsibility, and LVEF, the exact protocols varied by institution. Finally, it has been established in multiple studies that LUS used in addition to standard workup including history and physical, labs, and electrocardiogram has been shown to increase diagnostic accuracy.^2,5
 

Using POCUS to guide diuretic therapy in HF

To date, there have been multiple small studies published on the utility of daily POCUS in hospitalized patients with ADHF to help assess response to treatment and guide diuresis by looking for reduction in B lines on LUS or a change in IVC size or collapsibility. Volpicelli and colleagues showed that daily LUS was at least as good as daily CXR in monitoring response to therapy.⁶ Similarly, Mozzini and colleagues performed a randomized controlled trial of 120 patients admitted for ADHF who were randomized to a CXR group (who had a CXR performed on admission and discharge) and a LUS group (which was performed at admission, 24 hours, 48 hours, 72 hours, and discharge).⁷ This study found that the LUS group underwent a significantly higher number of diuretic dose adjustments as compared with the CXR group (P < .001) and had a modest improvement in LOS, compared with the CXR group. Specifically, median LOS was 8 days in CXR group (range, 4-17 days) and 7 days in the LUS group (range, 3-10 days; P < .001).

The impact of POCUS on length of stay (LOS) and readmissions

There is increasing data that POCUS can have meaningful impacts on patient-centered outcomes (morbidity, mortality, and readmission) while exposing patients to minimal discomfort, no venipuncture, and no radiation exposure. First, multiple studies looked at whether performing focused cardiac US of the IVC as a marker of volume status could predict readmission in patients hospitalized for ADHF.^8,9 Both of these trials showed that plethoric, noncollapsible IVC at discharge were statistically significant predictors of readmission. In fact, Goonewardena and colleagues demonstrated that patients who required readmission had an enlarged IVC at discharge nearly 3 times more frequently (21% vs. 61%, P < .001) and abnormal IVC collapsibility 1.5 times more frequently (41% vs. 71%, P = .01) as compared with patients who remained out of the hospital.⁹

Similarly, a subsequent trial looked at whether IVC size on admission was of prognostic importance in patients hospitalized for ADHF and showed that admission IVC diameter was an independent predictor of both 90-day mortality (hazard ratio, 5.88; 95% confidence interval, 1.21-28.10; P = .025) and 90-day readmission (HR, 3.20; 95% CI, 1.24-8.21; P = .016).¹⁰ Additionally, LUS heart failure assessment for pulmonary congestion by counting B lines also showed that having more than 15 B lines prior to discharge was an independent predictor of readmission for ADHF at 6 months (HR, 11.74; 95% CI, 1.30-106.16).¹¹

A challenge of POCUS: Obtaining competency

As previously noted, there are not yet any established standards for training and assessing hospitalists in POCUS. The SHM Position Statement on POCUS recommends the following criteria for training⁵: the training environment should be similar to the location in which the trainee will practice, training and feedback should occur in real time, the trainee should be taught specific applications of POCUS (such as cardiac US, LUS, and IVC US) as each application comes with unique skills and knowledge, clinical competence must be achieved and demonstrated, and continued education and feedback are necessary once competence is obtained.¹² SHM recommends residency-based training pathways, training through a local or national program such as the SHM POCUS certificate program, or training through other medical societies for hospitalists already in practice.

Application of the data to our original case

Targeted POCUS using the LuCUS protocol is performed and reveals three B lines in two lung zones bilaterally, moderate bilateral pleural effusions, EF 20%, and a noncollapsible IVC leading to a diagnosis of ADHF. Her ADHF is treated with intravenous diuresis. She is continued on her chronic maintenance chronic obstructive pulmonary disorder regimen but does not receive steroids, avoiding hyperglycemia that has complicated prior admissions. Over the next few days her respiratory and cardiac status is monitored using POCUS to assess her response to therapy and titrate her diuretics to her true dry weight, which was several pounds lower than her previously assumed dry weight. At discharge she is instructed to use the new dry weight which may avoid readmissions for HF.

Bottom line

POCUS improves diagnostic accuracy and facilitates volume assessment and management in acute decompensated heart failure.

Dr. Farber is a medical instructor at Duke University and hospitalist at Duke Regional Hospital, both in Durham, N.C. Dr. Marcantonio is a medical instructor in the department of internal medicine and department of pediatrics at Duke University and hospitalist at Duke University Hospital and Duke Regional Hospital. Dr. Stafford and Dr. Brooks are assistant professors of medicine and hospitalists at Duke Regional Hospital. Dr. Wachter is associate medical director at Duke Regional Hospital and assistant professor at Duke University. Dr. Menon is a hospitalist at Duke University. Dr. Sharma is associate medical director for clinical education at Duke Regional Hospital and associate professor of medicine at Duke University.

References

1. Pivetta E et al. Lung ultrasound integrated with clinical assessment for the diagnosis of acute decompensated heart failure in the emergency department: A randomized controlled trial. Eur J Heart Fail. 2019 Jun;21(6):754-66. doi: 10.1002/ejhf.1379.

2. Pivetta E et al. Lung ultrasound-implemented diagnosis of acute decompensated heart failure in the ED: A SIMEU multicenter study. Chest. 2015;148(1):202-10. doi: 10.1378/chest.14-2608.

3. Anderson KL et al. Diagnosing heart failure among acutely dyspneic patients with cardiac, inferior vena cava, and lung ultrasonography. Am J Emerg Med. 2013;31:1208-14. doi: 10.1016/j.ajem.2013.05.007.

4. Russell FM et al. Diagnosing acute heart failure in patients with undifferentiated dyspnea: A lung and cardiac ultrasound (LuCUS) protocol. Acad Emerg Med. 2015;22(2):182-91. doi:10.1111/acem.12570.

5. Maw AM et al. Diagnostic accuracy of point-of-care lung ultrasonography and chest radiography in adults with symptoms suggestive of acute decompensated heart failure: A systematic review and meta-analysis. JAMA Netw Open. 2019 Mar 1;2(3):e190703. doi:10.1001/jamanetworkopen.2019.0703.

6. Volpicelli G et al. Bedside ultrasound of the lung for the monitoring of acute decompensated heart failure. Am J Emerg Med. 2008 Jun;26(5):585-91. doi:10.1016/j.ajem.2007.09.014.

7. Mozzini C et al. Lung ultrasound in internal medicine efficiently drives the management of patients with heart failure and speeds up the discharge time. Intern Emerg Med. 2018 Jan;13(1):27-33. doi: 10.1007/s11739-017-1738-1.

8. Laffin LJ et al. Focused cardiac ultrasound as a predictor of readmission in acute decompensated heart failure. Int J Cardiovasc Imaging. 2018;34(7):1075-9. doi:10.1007/s10554-018-1317-1.

9. Goonewardena SN et al. Comparison of hand-carried ultrasound assessment of the inferior vena cava and N-terminal pro-brain natriuretic peptide for predicting readmission after hospitalization for acute decompensated heart failure. JACC Cardiovasc Imaging. 2008;1(5):595-601. doi:10.1016/j.jcmg.2008.06.005.

10. Cubo-Romano P et al. Admission inferior vena cava measurements are associated with mortality after hospitalization for acute decompensated heart failure. J Hosp Med. 2016 Nov;11(11):778-84. doi: 10.1002/jhm.2620.

11. Gargani L et al. Persistent pulmonary congestion before discharge predicts rehospitalization in heart failure: A lung ultrasound study. Cardiovasc Ultrasound. 2015 Sep 4;13:40. doi: 10.1186/s12947-015-0033-4.

12. Soni NJ et al. Point-of-care ultrasound for hospitalists: A Position Statement of the Society of Hospital Medicine. J Hosp Med. 2019 Jan 2;14:E1-6. doi: 10.12788/jhm.3079.

Key points

• Studies have found POCUS improves the diagnosis of acute decompensated heart failure in patients presenting with dyspnea.
• Daily evaluation with POCUS has decreased length of stay in acute decompensated heart failure.
• Credentialing requirements for hospitalists to use POCUS for clinical care vary by hospital.

Additional reading

Maw AM and Soni NJ. Annals for hospitalists inpatient notes – why should hospitalists use point-of-care ultrasound? Ann Intern Med. 2018 Apr 17;168(8):HO2-HO3. doi: 10.7326/M18-0367.

Lewiss RE. “The ultrasound looked fine”: Point of care ultrasound and patient safety. AHRQ’s Patient Safety Network. WebM&M: Case Studies. 2018 Jul 1. https://psnet.ahrq.gov/web-mm/ultrasound-looked-fine-point-care-ultrasound-and-patient-safety.

Quiz: Testing your POCUS knowledge

POCUS is increasingly prevalent in hospital medicine, but use varies among different disease processes. Which organ system ultrasound or lab test would be most helpful in the following scenario?

An acutely dyspneic patient with no past medical history presents to the ED. Chest x-ray is equivocal. Of the following, which study best confirms a diagnosis of acute decompensated heart failure?

A. Brain natriuretic peptide

B. Point-of-care cardiac ultrasound

C. Point-of-care lung ultrasound

D. Point-of-care inferior vena cava ultrasound

Answer

C. Point-of-care lung ultrasound

Multiple studies, including three systematic reviews, have shown that point-of-care lung ultrasound has high sensitivity and specificity to evaluate for B lines as a marker for cardiogenic pulmonary edema. Point-of-care ultrasound of ejection fraction and inferior vena cava have not been evaluated by systematic review although one randomized, controlled trial showed that an EF less than 45% had 74% specificity and 77% sensitivity and IVC collapsibility index less than 20% had an 86% specificity and 52% sensitivity for detection of acute decompensated heart failure. This same study showed that the combination of cardiac, lung, and IVC point-of-care ultrasound had 100% specificity for diagnosing acute decompensated heart failure. In the future, health care providers could rely on this multiorgan evaluation with point-of-care ultrasound to confirm a diagnosis of acute decompensated heart failure in a dyspneic patient.

Case

A 65-year-old woman presents to the emergency department with a chief complaint of shortness of breath for 3 days. Medical history is notable for moderate chronic obstructive pulmonary disorder, systolic heart failure with last known ejection fraction (EF) of 35% and type 2 diabetes complicated by hyperglycemia when on steroids. You are talking the case over with colleagues and they suggest point-of-care ultrasound (POCUS) would be useful in her case.
 

Brief overview of the issue

Once mainly used by ED and critical care physicians, POCUS is now a tool that many hospitalists are using at the bedside. POCUS differs from traditional comprehensive ultrasounds in the following ways: POCUS is designed to answer a specific clinical question (as opposed to evaluating all organs in a specific region), POCUS exams are performed by the clinician who is formulating the clinical question (as opposed to by a consultative service such as cardiology and radiology), and POCUS can evaluate multiple organ systems (such as by evaluating a patient’s heart, lungs, and inferior vena cava to determine the etiology of hypoxia).

Hospitalist use of POCUS may include guiding procedures, aiding in diagnosis, and assessing effectiveness of treatment. Many high-quality studies have been published that support the use of POCUS and have proven that POCUS can decrease medical errors, help reach diagnoses in a more expedited fashion, and complement or replace more advanced imaging.

A challenge of POCUS is that it is user dependent and there are no established standards for hospitalists in POCUS training. As the Society of Hospital Medicine position statement on POCUS points out, there is a significant difference between skill levels required to obtain a certificate of completion for POCUS training and a certificate of competency in POCUS. Therefore, it is recommended hospitalists work with local credentialing committees to delineate the requirements for POCUS use.
 

Overview of the data

POCUS for initial assessment and diagnosis of heart failure (HF)

Use of POCUS in cases of suspected HF includes examination of the heart, lungs, and inferior vena cava (IVC). Cardiac ultrasound provides an estimated ejection fraction. Lung ultrasound (LUS) functions to examine for B lines and pleural effusions. The presence of more than three B lines per thoracic zone bilaterally suggests cardiogenic pulmonary edema. Scanning the IVC provides a noninvasive way to assess volume status and is especially helpful when body habitus prevents accurate assessment of jugular venous pressure.

Several studies have addressed the utility of bedside ultrasound in the initial assessment or diagnosis of acute decompensated heart failure (ADHF) in patients presenting with dyspnea in emergency or inpatient settings. Positive B lines are a useful finding, with high sensitivities, high specificities, and positive likelihood ratios. One large multicenter prospective study found LUS to have a sensitivity of 90.5%, specificity of 93.5%, and positive and negative LRs of 14.0 and 0.10, respectively.¹ Another large multicenter prospective cohort study showed that LUS was more sensitive and more specific than chest x-ray (CXR) and brain natriuretic peptide in detecting ADHF.² Additional POCUS findings that have shown relatively high sensitivities and specificities in the initial diagnosis of ADHF include pleural effusion, reduced left ventricular ejection fraction (LVEF), increased left ventricular end-diastolic dimension, and jugular venous distention.

Data also exists on assessments of ADHF using combinations of POCUS findings; for example, lung and cardiac ultrasound (LuCUS) protocols include an evaluation for B lines, assessment of IVC size and collapsibility, and determination of LVEF, although this has mainly been examined in ED patients. For patients who presented to the ED with undifferentiated dyspnea, one such study showed a specificity of 100% when a LuCUS protocol was used to diagnose ADHF while another study showed that the use of a LuCUS protocol changed management in 47% of patients.^3,4 Of note, although each LuCUS protocol integrated the use of lung findings, IVC collapsibility, and LVEF, the exact protocols varied by institution. Finally, it has been established in multiple studies that LUS used in addition to standard workup including history and physical, labs, and electrocardiogram has been shown to increase diagnostic accuracy.^2,5
 

Using POCUS to guide diuretic therapy in HF

To date, there have been multiple small studies published on the utility of daily POCUS in hospitalized patients with ADHF to help assess response to treatment and guide diuresis by looking for reduction in B lines on LUS or a change in IVC size or collapsibility. Volpicelli and colleagues showed that daily LUS was at least as good as daily CXR in monitoring response to therapy.⁶ Similarly, Mozzini and colleagues performed a randomized controlled trial of 120 patients admitted for ADHF who were randomized to a CXR group (who had a CXR performed on admission and discharge) and a LUS group (which was performed at admission, 24 hours, 48 hours, 72 hours, and discharge).⁷ This study found that the LUS group underwent a significantly higher number of diuretic dose adjustments as compared with the CXR group (P < .001) and had a modest improvement in LOS, compared with the CXR group. Specifically, median LOS was 8 days in CXR group (range, 4-17 days) and 7 days in the LUS group (range, 3-10 days; P < .001).

The impact of POCUS on length of stay (LOS) and readmissions

There is increasing data that POCUS can have meaningful impacts on patient-centered outcomes (morbidity, mortality, and readmission) while exposing patients to minimal discomfort, no venipuncture, and no radiation exposure. First, multiple studies looked at whether performing focused cardiac US of the IVC as a marker of volume status could predict readmission in patients hospitalized for ADHF.^8,9 Both of these trials showed that plethoric, noncollapsible IVC at discharge were statistically significant predictors of readmission. In fact, Goonewardena and colleagues demonstrated that patients who required readmission had an enlarged IVC at discharge nearly 3 times more frequently (21% vs. 61%, P < .001) and abnormal IVC collapsibility 1.5 times more frequently (41% vs. 71%, P = .01) as compared with patients who remained out of the hospital.⁹

Similarly, a subsequent trial looked at whether IVC size on admission was of prognostic importance in patients hospitalized for ADHF and showed that admission IVC diameter was an independent predictor of both 90-day mortality (hazard ratio, 5.88; 95% confidence interval, 1.21-28.10; P = .025) and 90-day readmission (HR, 3.20; 95% CI, 1.24-8.21; P = .016).¹⁰ Additionally, LUS heart failure assessment for pulmonary congestion by counting B lines also showed that having more than 15 B lines prior to discharge was an independent predictor of readmission for ADHF at 6 months (HR, 11.74; 95% CI, 1.30-106.16).¹¹

A challenge of POCUS: Obtaining competency

As previously noted, there are not yet any established standards for training and assessing hospitalists in POCUS. The SHM Position Statement on POCUS recommends the following criteria for training⁵: the training environment should be similar to the location in which the trainee will practice, training and feedback should occur in real time, the trainee should be taught specific applications of POCUS (such as cardiac US, LUS, and IVC US) as each application comes with unique skills and knowledge, clinical competence must be achieved and demonstrated, and continued education and feedback are necessary once competence is obtained.¹² SHM recommends residency-based training pathways, training through a local or national program such as the SHM POCUS certificate program, or training through other medical societies for hospitalists already in practice.

Application of the data to our original case

Targeted POCUS using the LuCUS protocol is performed and reveals three B lines in two lung zones bilaterally, moderate bilateral pleural effusions, EF 20%, and a noncollapsible IVC leading to a diagnosis of ADHF. Her ADHF is treated with intravenous diuresis. She is continued on her chronic maintenance chronic obstructive pulmonary disorder regimen but does not receive steroids, avoiding hyperglycemia that has complicated prior admissions. Over the next few days her respiratory and cardiac status is monitored using POCUS to assess her response to therapy and titrate her diuretics to her true dry weight, which was several pounds lower than her previously assumed dry weight. At discharge she is instructed to use the new dry weight which may avoid readmissions for HF.

Bottom line

POCUS improves diagnostic accuracy and facilitates volume assessment and management in acute decompensated heart failure.

Dr. Farber is a medical instructor at Duke University and hospitalist at Duke Regional Hospital, both in Durham, N.C. Dr. Marcantonio is a medical instructor in the department of internal medicine and department of pediatrics at Duke University and hospitalist at Duke University Hospital and Duke Regional Hospital. Dr. Stafford and Dr. Brooks are assistant professors of medicine and hospitalists at Duke Regional Hospital. Dr. Wachter is associate medical director at Duke Regional Hospital and assistant professor at Duke University. Dr. Menon is a hospitalist at Duke University. Dr. Sharma is associate medical director for clinical education at Duke Regional Hospital and associate professor of medicine at Duke University.

References

1. Pivetta E et al. Lung ultrasound integrated with clinical assessment for the diagnosis of acute decompensated heart failure in the emergency department: A randomized controlled trial. Eur J Heart Fail. 2019 Jun;21(6):754-66. doi: 10.1002/ejhf.1379.

2. Pivetta E et al. Lung ultrasound-implemented diagnosis of acute decompensated heart failure in the ED: A SIMEU multicenter study. Chest. 2015;148(1):202-10. doi: 10.1378/chest.14-2608.

3. Anderson KL et al. Diagnosing heart failure among acutely dyspneic patients with cardiac, inferior vena cava, and lung ultrasonography. Am J Emerg Med. 2013;31:1208-14. doi: 10.1016/j.ajem.2013.05.007.

4. Russell FM et al. Diagnosing acute heart failure in patients with undifferentiated dyspnea: A lung and cardiac ultrasound (LuCUS) protocol. Acad Emerg Med. 2015;22(2):182-91. doi:10.1111/acem.12570.

5. Maw AM et al. Diagnostic accuracy of point-of-care lung ultrasonography and chest radiography in adults with symptoms suggestive of acute decompensated heart failure: A systematic review and meta-analysis. JAMA Netw Open. 2019 Mar 1;2(3):e190703. doi:10.1001/jamanetworkopen.2019.0703.

6. Volpicelli G et al. Bedside ultrasound of the lung for the monitoring of acute decompensated heart failure. Am J Emerg Med. 2008 Jun;26(5):585-91. doi:10.1016/j.ajem.2007.09.014.

7. Mozzini C et al. Lung ultrasound in internal medicine efficiently drives the management of patients with heart failure and speeds up the discharge time. Intern Emerg Med. 2018 Jan;13(1):27-33. doi: 10.1007/s11739-017-1738-1.

8. Laffin LJ et al. Focused cardiac ultrasound as a predictor of readmission in acute decompensated heart failure. Int J Cardiovasc Imaging. 2018;34(7):1075-9. doi:10.1007/s10554-018-1317-1.

9. Goonewardena SN et al. Comparison of hand-carried ultrasound assessment of the inferior vena cava and N-terminal pro-brain natriuretic peptide for predicting readmission after hospitalization for acute decompensated heart failure. JACC Cardiovasc Imaging. 2008;1(5):595-601. doi:10.1016/j.jcmg.2008.06.005.

10. Cubo-Romano P et al. Admission inferior vena cava measurements are associated with mortality after hospitalization for acute decompensated heart failure. J Hosp Med. 2016 Nov;11(11):778-84. doi: 10.1002/jhm.2620.

11. Gargani L et al. Persistent pulmonary congestion before discharge predicts rehospitalization in heart failure: A lung ultrasound study. Cardiovasc Ultrasound. 2015 Sep 4;13:40. doi: 10.1186/s12947-015-0033-4.

12. Soni NJ et al. Point-of-care ultrasound for hospitalists: A Position Statement of the Society of Hospital Medicine. J Hosp Med. 2019 Jan 2;14:E1-6. doi: 10.12788/jhm.3079.

Key points

• Studies have found POCUS improves the diagnosis of acute decompensated heart failure in patients presenting with dyspnea.
• Daily evaluation with POCUS has decreased length of stay in acute decompensated heart failure.
• Credentialing requirements for hospitalists to use POCUS for clinical care vary by hospital.

Additional reading

Maw AM and Soni NJ. Annals for hospitalists inpatient notes – why should hospitalists use point-of-care ultrasound? Ann Intern Med. 2018 Apr 17;168(8):HO2-HO3. doi: 10.7326/M18-0367.

Lewiss RE. “The ultrasound looked fine”: Point of care ultrasound and patient safety. AHRQ’s Patient Safety Network. WebM&M: Case Studies. 2018 Jul 1. https://psnet.ahrq.gov/web-mm/ultrasound-looked-fine-point-care-ultrasound-and-patient-safety.

Quiz: Testing your POCUS knowledge

POCUS is increasingly prevalent in hospital medicine, but use varies among different disease processes. Which organ system ultrasound or lab test would be most helpful in the following scenario?

An acutely dyspneic patient with no past medical history presents to the ED. Chest x-ray is equivocal. Of the following, which study best confirms a diagnosis of acute decompensated heart failure?

A. Brain natriuretic peptide

B. Point-of-care cardiac ultrasound

C. Point-of-care lung ultrasound

D. Point-of-care inferior vena cava ultrasound

Answer

C. Point-of-care lung ultrasound

Multiple studies, including three systematic reviews, have shown that point-of-care lung ultrasound has high sensitivity and specificity to evaluate for B lines as a marker for cardiogenic pulmonary edema. Point-of-care ultrasound of ejection fraction and inferior vena cava have not been evaluated by systematic review although one randomized, controlled trial showed that an EF less than 45% had 74% specificity and 77% sensitivity and IVC collapsibility index less than 20% had an 86% specificity and 52% sensitivity for detection of acute decompensated heart failure. This same study showed that the combination of cardiac, lung, and IVC point-of-care ultrasound had 100% specificity for diagnosing acute decompensated heart failure. In the future, health care providers could rely on this multiorgan evaluation with point-of-care ultrasound to confirm a diagnosis of acute decompensated heart failure in a dyspneic patient.

Case

A 65-year-old woman presents to the emergency department with a chief complaint of shortness of breath for 3 days. Medical history is notable for moderate chronic obstructive pulmonary disorder, systolic heart failure with last known ejection fraction (EF) of 35% and type 2 diabetes complicated by hyperglycemia when on steroids. You are talking the case over with colleagues and they suggest point-of-care ultrasound (POCUS) would be useful in her case.
 

Brief overview of the issue

Once mainly used by ED and critical care physicians, POCUS is now a tool that many hospitalists are using at the bedside. POCUS differs from traditional comprehensive ultrasounds in the following ways: POCUS is designed to answer a specific clinical question (as opposed to evaluating all organs in a specific region), POCUS exams are performed by the clinician who is formulating the clinical question (as opposed to by a consultative service such as cardiology and radiology), and POCUS can evaluate multiple organ systems (such as by evaluating a patient’s heart, lungs, and inferior vena cava to determine the etiology of hypoxia).

Hospitalist use of POCUS may include guiding procedures, aiding in diagnosis, and assessing effectiveness of treatment. Many high-quality studies have been published that support the use of POCUS and have proven that POCUS can decrease medical errors, help reach diagnoses in a more expedited fashion, and complement or replace more advanced imaging.

A challenge of POCUS is that it is user dependent and there are no established standards for hospitalists in POCUS training. As the Society of Hospital Medicine position statement on POCUS points out, there is a significant difference between skill levels required to obtain a certificate of completion for POCUS training and a certificate of competency in POCUS. Therefore, it is recommended hospitalists work with local credentialing committees to delineate the requirements for POCUS use.
 

Overview of the data

POCUS for initial assessment and diagnosis of heart failure (HF)

Use of POCUS in cases of suspected HF includes examination of the heart, lungs, and inferior vena cava (IVC). Cardiac ultrasound provides an estimated ejection fraction. Lung ultrasound (LUS) functions to examine for B lines and pleural effusions. The presence of more than three B lines per thoracic zone bilaterally suggests cardiogenic pulmonary edema. Scanning the IVC provides a noninvasive way to assess volume status and is especially helpful when body habitus prevents accurate assessment of jugular venous pressure.

Several studies have addressed the utility of bedside ultrasound in the initial assessment or diagnosis of acute decompensated heart failure (ADHF) in patients presenting with dyspnea in emergency or inpatient settings. Positive B lines are a useful finding, with high sensitivities, high specificities, and positive likelihood ratios. One large multicenter prospective study found LUS to have a sensitivity of 90.5%, specificity of 93.5%, and positive and negative LRs of 14.0 and 0.10, respectively.¹ Another large multicenter prospective cohort study showed that LUS was more sensitive and more specific than chest x-ray (CXR) and brain natriuretic peptide in detecting ADHF.² Additional POCUS findings that have shown relatively high sensitivities and specificities in the initial diagnosis of ADHF include pleural effusion, reduced left ventricular ejection fraction (LVEF), increased left ventricular end-diastolic dimension, and jugular venous distention.

Data also exists on assessments of ADHF using combinations of POCUS findings; for example, lung and cardiac ultrasound (LuCUS) protocols include an evaluation for B lines, assessment of IVC size and collapsibility, and determination of LVEF, although this has mainly been examined in ED patients. For patients who presented to the ED with undifferentiated dyspnea, one such study showed a specificity of 100% when a LuCUS protocol was used to diagnose ADHF while another study showed that the use of a LuCUS protocol changed management in 47% of patients.^3,4 Of note, although each LuCUS protocol integrated the use of lung findings, IVC collapsibility, and LVEF, the exact protocols varied by institution. Finally, it has been established in multiple studies that LUS used in addition to standard workup including history and physical, labs, and electrocardiogram has been shown to increase diagnostic accuracy.^2,5
 

Using POCUS to guide diuretic therapy in HF

To date, there have been multiple small studies published on the utility of daily POCUS in hospitalized patients with ADHF to help assess response to treatment and guide diuresis by looking for reduction in B lines on LUS or a change in IVC size or collapsibility. Volpicelli and colleagues showed that daily LUS was at least as good as daily CXR in monitoring response to therapy.⁶ Similarly, Mozzini and colleagues performed a randomized controlled trial of 120 patients admitted for ADHF who were randomized to a CXR group (who had a CXR performed on admission and discharge) and a LUS group (which was performed at admission, 24 hours, 48 hours, 72 hours, and discharge).⁷ This study found that the LUS group underwent a significantly higher number of diuretic dose adjustments as compared with the CXR group (P < .001) and had a modest improvement in LOS, compared with the CXR group. Specifically, median LOS was 8 days in CXR group (range, 4-17 days) and 7 days in the LUS group (range, 3-10 days; P < .001).

The impact of POCUS on length of stay (LOS) and readmissions

There is increasing data that POCUS can have meaningful impacts on patient-centered outcomes (morbidity, mortality, and readmission) while exposing patients to minimal discomfort, no venipuncture, and no radiation exposure. First, multiple studies looked at whether performing focused cardiac US of the IVC as a marker of volume status could predict readmission in patients hospitalized for ADHF.^8,9 Both of these trials showed that plethoric, noncollapsible IVC at discharge were statistically significant predictors of readmission. In fact, Goonewardena and colleagues demonstrated that patients who required readmission had an enlarged IVC at discharge nearly 3 times more frequently (21% vs. 61%, P < .001) and abnormal IVC collapsibility 1.5 times more frequently (41% vs. 71%, P = .01) as compared with patients who remained out of the hospital.⁹

Similarly, a subsequent trial looked at whether IVC size on admission was of prognostic importance in patients hospitalized for ADHF and showed that admission IVC diameter was an independent predictor of both 90-day mortality (hazard ratio, 5.88; 95% confidence interval, 1.21-28.10; P = .025) and 90-day readmission (HR, 3.20; 95% CI, 1.24-8.21; P = .016).¹⁰ Additionally, LUS heart failure assessment for pulmonary congestion by counting B lines also showed that having more than 15 B lines prior to discharge was an independent predictor of readmission for ADHF at 6 months (HR, 11.74; 95% CI, 1.30-106.16).¹¹

A challenge of POCUS: Obtaining competency

As previously noted, there are not yet any established standards for training and assessing hospitalists in POCUS. The SHM Position Statement on POCUS recommends the following criteria for training⁵: the training environment should be similar to the location in which the trainee will practice, training and feedback should occur in real time, the trainee should be taught specific applications of POCUS (such as cardiac US, LUS, and IVC US) as each application comes with unique skills and knowledge, clinical competence must be achieved and demonstrated, and continued education and feedback are necessary once competence is obtained.¹² SHM recommends residency-based training pathways, training through a local or national program such as the SHM POCUS certificate program, or training through other medical societies for hospitalists already in practice.

Application of the data to our original case

Targeted POCUS using the LuCUS protocol is performed and reveals three B lines in two lung zones bilaterally, moderate bilateral pleural effusions, EF 20%, and a noncollapsible IVC leading to a diagnosis of ADHF. Her ADHF is treated with intravenous diuresis. She is continued on her chronic maintenance chronic obstructive pulmonary disorder regimen but does not receive steroids, avoiding hyperglycemia that has complicated prior admissions. Over the next few days her respiratory and cardiac status is monitored using POCUS to assess her response to therapy and titrate her diuretics to her true dry weight, which was several pounds lower than her previously assumed dry weight. At discharge she is instructed to use the new dry weight which may avoid readmissions for HF.

Bottom line

POCUS improves diagnostic accuracy and facilitates volume assessment and management in acute decompensated heart failure.

Dr. Farber is a medical instructor at Duke University and hospitalist at Duke Regional Hospital, both in Durham, N.C. Dr. Marcantonio is a medical instructor in the department of internal medicine and department of pediatrics at Duke University and hospitalist at Duke University Hospital and Duke Regional Hospital. Dr. Stafford and Dr. Brooks are assistant professors of medicine and hospitalists at Duke Regional Hospital. Dr. Wachter is associate medical director at Duke Regional Hospital and assistant professor at Duke University. Dr. Menon is a hospitalist at Duke University. Dr. Sharma is associate medical director for clinical education at Duke Regional Hospital and associate professor of medicine at Duke University.

References

1. Pivetta E et al. Lung ultrasound integrated with clinical assessment for the diagnosis of acute decompensated heart failure in the emergency department: A randomized controlled trial. Eur J Heart Fail. 2019 Jun;21(6):754-66. doi: 10.1002/ejhf.1379.

2. Pivetta E et al. Lung ultrasound-implemented diagnosis of acute decompensated heart failure in the ED: A SIMEU multicenter study. Chest. 2015;148(1):202-10. doi: 10.1378/chest.14-2608.

3. Anderson KL et al. Diagnosing heart failure among acutely dyspneic patients with cardiac, inferior vena cava, and lung ultrasonography. Am J Emerg Med. 2013;31:1208-14. doi: 10.1016/j.ajem.2013.05.007.

4. Russell FM et al. Diagnosing acute heart failure in patients with undifferentiated dyspnea: A lung and cardiac ultrasound (LuCUS) protocol. Acad Emerg Med. 2015;22(2):182-91. doi:10.1111/acem.12570.

5. Maw AM et al. Diagnostic accuracy of point-of-care lung ultrasonography and chest radiography in adults with symptoms suggestive of acute decompensated heart failure: A systematic review and meta-analysis. JAMA Netw Open. 2019 Mar 1;2(3):e190703. doi:10.1001/jamanetworkopen.2019.0703.

6. Volpicelli G et al. Bedside ultrasound of the lung for the monitoring of acute decompensated heart failure. Am J Emerg Med. 2008 Jun;26(5):585-91. doi:10.1016/j.ajem.2007.09.014.

7. Mozzini C et al. Lung ultrasound in internal medicine efficiently drives the management of patients with heart failure and speeds up the discharge time. Intern Emerg Med. 2018 Jan;13(1):27-33. doi: 10.1007/s11739-017-1738-1.

8. Laffin LJ et al. Focused cardiac ultrasound as a predictor of readmission in acute decompensated heart failure. Int J Cardiovasc Imaging. 2018;34(7):1075-9. doi:10.1007/s10554-018-1317-1.

9. Goonewardena SN et al. Comparison of hand-carried ultrasound assessment of the inferior vena cava and N-terminal pro-brain natriuretic peptide for predicting readmission after hospitalization for acute decompensated heart failure. JACC Cardiovasc Imaging. 2008;1(5):595-601. doi:10.1016/j.jcmg.2008.06.005.

10. Cubo-Romano P et al. Admission inferior vena cava measurements are associated with mortality after hospitalization for acute decompensated heart failure. J Hosp Med. 2016 Nov;11(11):778-84. doi: 10.1002/jhm.2620.

11. Gargani L et al. Persistent pulmonary congestion before discharge predicts rehospitalization in heart failure: A lung ultrasound study. Cardiovasc Ultrasound. 2015 Sep 4;13:40. doi: 10.1186/s12947-015-0033-4.

12. Soni NJ et al. Point-of-care ultrasound for hospitalists: A Position Statement of the Society of Hospital Medicine. J Hosp Med. 2019 Jan 2;14:E1-6. doi: 10.12788/jhm.3079.

Key points

• Studies have found POCUS improves the diagnosis of acute decompensated heart failure in patients presenting with dyspnea.
• Daily evaluation with POCUS has decreased length of stay in acute decompensated heart failure.
• Credentialing requirements for hospitalists to use POCUS for clinical care vary by hospital.

Additional reading

Maw AM and Soni NJ. Annals for hospitalists inpatient notes – why should hospitalists use point-of-care ultrasound? Ann Intern Med. 2018 Apr 17;168(8):HO2-HO3. doi: 10.7326/M18-0367.

Lewiss RE. “The ultrasound looked fine”: Point of care ultrasound and patient safety. AHRQ’s Patient Safety Network. WebM&M: Case Studies. 2018 Jul 1. https://psnet.ahrq.gov/web-mm/ultrasound-looked-fine-point-care-ultrasound-and-patient-safety.

Quiz: Testing your POCUS knowledge

POCUS is increasingly prevalent in hospital medicine, but use varies among different disease processes. Which organ system ultrasound or lab test would be most helpful in the following scenario?

An acutely dyspneic patient with no past medical history presents to the ED. Chest x-ray is equivocal. Of the following, which study best confirms a diagnosis of acute decompensated heart failure?

A. Brain natriuretic peptide

B. Point-of-care cardiac ultrasound

C. Point-of-care lung ultrasound

D. Point-of-care inferior vena cava ultrasound

Answer

C. Point-of-care lung ultrasound

Multiple studies, including three systematic reviews, have shown that point-of-care lung ultrasound has high sensitivity and specificity to evaluate for B lines as a marker for cardiogenic pulmonary edema. Point-of-care ultrasound of ejection fraction and inferior vena cava have not been evaluated by systematic review although one randomized, controlled trial showed that an EF less than 45% had 74% specificity and 77% sensitivity and IVC collapsibility index less than 20% had an 86% specificity and 52% sensitivity for detection of acute decompensated heart failure. This same study showed that the combination of cardiac, lung, and IVC point-of-care ultrasound had 100% specificity for diagnosing acute decompensated heart failure. In the future, health care providers could rely on this multiorgan evaluation with point-of-care ultrasound to confirm a diagnosis of acute decompensated heart failure in a dyspneic patient.