Cardiology

CHICAGO – Black patients with heart failure with reduced ejection fraction (HFrEF) may receive more benefit from treatment with a sodium-glucose cotransporter-2 (SGLT2) inhibitor than do White patients, according to a new report.

A secondary analysis of data collected from the pivotal trials that assessed the SGLT2 inhibitor empagliflozin in patients with HFrEF, EMPEROR-Reduced, and in patients with heart failure with preserved ejection fraction (HFpEF), EMPEROR-Preserved, was presented by Subodh Verma, MD, PhD, at the American Heart Association scientific sessions.

Mitchel L. Zoler/MDedge News

The “hypothesis-generating” analysis of data from EMPEROR-Reduced showed “a suggestion of a greater benefit of empagliflozin” in Black, compared with White patients, for the study’s primary endpoint (cardiovascular death or hospitalization for heart failure) as well as for first and total hospitalizations for heart failure, he reported.

However, a similar but separate analysis that compared Black and White patients with heart failure who received treatment with a second agent, dapagliflozin, from the same SGLT2-inhibitor class did not show any suggestion of heterogeneity in the drug’s effect based on race.
 

Race-linked heterogeneity in empagliflozin’s effect

In EMPEROR-Reduced, which randomized 3,730 patients with heart failure and a left ventricular ejection fraction of 40% or less, treatment of White patients with empagliflozin (Jardiance) produced a nonsignificant 16% relative reduction in the rate of the primary endpoint, compared with placebo, during a median 16-month follow-up.

By contrast, among Black patients, treatment with empagliflozin produced a significant 56% reduction in the primary endpoint, compared with placebo-treated patients, a significant heterogeneity (P = .02) in effect between the two race subgroups, said Dr. Verma, a cardiac surgeon and professor at the University of Toronto.

The analysis he reported used combined data from EMPEROR-Reduced and the companion trial EMPEROR-Preserved, which randomized 5,988 patients with heart failure and a left ventricular ejection fraction greater than 40% to treatment with either empagliflozin or placebo and followed them for a median of 26 months.

To assess the effects of the randomized treatments in the two racial subgroups, Dr. Verma and associates used pooled data from both trials, but only from the 3,502 patients enrolled in the Americas, which included 3,024 White patients and 478 Black patients. Analysis of the patients in this subgroup who were randomized to placebo showed a significantly excess rate of the primary outcome among Blacks, who tallied 49% more of the primary outcome events during follow-up than did White patients, Dr. Verma reported. The absolute rate of the primary outcome without empagliflozin treatment was 13.15 events/100 patient-years of follow-up in White patients and 20.83 events/100 patient-years in Black patients.

The impact of empagliflozin was not statistically heterogeneous in the total pool of patients that included both those with HFrEF and those with HFpEF. The drug reduced the primary outcome incidence by a significant 20% in White patients, and by a significant 44% among Black patients.

But this point-estimate difference in efficacy, when coupled with the underlying difference in risk for an event between the two racial groups, meant that the number-needed-to-treat to prevent one primary outcome event was 42 among White patients and 12 among Black patients.
 

Race-linked treatment responses only in HFrEF

This suggestion of an imbalance in treatment efficacy was especially apparent among patients with HFrEF. In addition to the heterogeneity for the primary outcome, the Black and White subgroups also showed significantly divergent results for the outcomes of first hospitalization for heart failure, with a nonsignificant 21% relative reduction with empagliflozin treatment in Whites but a significant 65% relative cut in this endpoint with empagliflozin in Blacks, and for total hospitalizations for heart failure, which showed a similar level of significant heterogeneity between the two race subgroups.

In contrast, the patients with HFpEF showed no signal at all for heterogeneous outcome rates between Black and White subgroups.

One other study outcome, change in symptom burden measured by the Kansas City Cardiomyopathy Questionnaire (KCCQ), also showed suggestion of a race-based imbalance. The adjusted mean difference from baseline in the KCCQ clinical summary score was 1.50 points higher with empagliflozin treatment, compared with placebo among all White patients (those with HFrEF and those with HFpEF), and compared with a 5.25-point increase with empagliflozin over placebo among all Black patients with heart failure in the pooled American EMPEROR dataset, a difference between White and Black patients that just missed significance (P = .06). Again, this difference was especially notable and significant among the patients with HFrEF, where the adjusted mean difference in KCCQ was a 0.77-point increase in White patients and a 6.71-point increase among Black patients (P = .043),

These results also appeared in a report published simultaneously with Dr. Verma’s talk.

But two other analyses that assessed a possible race-based difference in empagliflozin’s effect on renal protection and on functional status showed no suggestion of heterogeneity.

Dr. Verma stressed caution about the limitations of these analyses because they involved a relatively small number of Black patients, and were possibly subject to unadjusted confounding from differences in baseline characteristics between the Black and White patients.

Black patients also had a number-needed-to-treat advantage with dapagliflozin

The finding that Black patients with heart failure potentially get more bang for the buck from treatment with an SGLT2 inhibitor by having a lower number needed to treat also showed up in a separate report at the meeting that assessed the treatment effect from dapagliflozin (Farxiga) in Black and White patients in a pooled analysis of the DAPA-HF pivotal trial of patients with HFrEF and the DELIVER pivotal trial of patients with HFpEF. The pooled cohort included a total of 11,007, but for the analysis by race the investigators also limited their focus to patients from the Americas with 2,626 White patients and 381 Black patients.

Mitchel L. Zoler/MDedge News

Assessment of the effect of dapagliflozin on the primary outcome of cardiovascular death or hospitalization for heart failure among all patients, both those with HFrEF and those with HFpEF, again showed that event rates among patients treated with placebo were significantly higher in Black, compared with White patients, and this led to a difference in the number needed to treat to prevent one primary outcome event of 12 in Blacks and 17 in Whites, Jawad H. Butt, MD said in a talk at the meeting.

Although treatment with dapagliflozin reduced the rate of the primary outcome in this subgroup of patients from the DAPA-HF trial and the DELIVER trial by similar rates in Black and White patients, event rates were higher in the Black patients resulting in “greater benefit in absolute terms” for Black patients, explained Dr. Butt, a cardiologist at Rigshospitalet in Copenhagen.

But in contrast to the empagliflozin findings reported by Dr. Verma, the combined data from the dapagliflozin trials showed no suggestion of heterogeneity in the beneficial effect of dapagliflozin based on left ventricular ejection fraction. In the Black patients, for example, the relative benefit from dapagliflozin on the primary outcome was consistent across the full spectrum of patients with HFrEF and HFpEF.

EMPEROR-Reduced and EMPEROR-Preserved were sponsored by Boehringer Ingelheim and Lilly, the companies that jointly market empagliflozin (Jardiance). The DAPA-HF and DELIVER trials were sponsored by AstraZeneca, the company that markets dapagliflozin (Farxiga). Dr. Verma has received honoraria, research support, or both from AstraZeneca, Boehringer Ingelheim, and Lilly, and from numerous other companies. Dr. Butt has been a consultant to and received travel grants from AstraZeneca, honoraria from Novartis, and has been an adviser to Bayer.




 

CHICAGO – Black patients with heart failure with reduced ejection fraction (HFrEF) may receive more benefit from treatment with a sodium-glucose cotransporter-2 (SGLT2) inhibitor than do White patients, according to a new report.

A secondary analysis of data collected from the pivotal trials that assessed the SGLT2 inhibitor empagliflozin in patients with HFrEF, EMPEROR-Reduced, and in patients with heart failure with preserved ejection fraction (HFpEF), EMPEROR-Preserved, was presented by Subodh Verma, MD, PhD, at the American Heart Association scientific sessions.

Mitchel L. Zoler/MDedge News

The “hypothesis-generating” analysis of data from EMPEROR-Reduced showed “a suggestion of a greater benefit of empagliflozin” in Black, compared with White patients, for the study’s primary endpoint (cardiovascular death or hospitalization for heart failure) as well as for first and total hospitalizations for heart failure, he reported.

However, a similar but separate analysis that compared Black and White patients with heart failure who received treatment with a second agent, dapagliflozin, from the same SGLT2-inhibitor class did not show any suggestion of heterogeneity in the drug’s effect based on race.
 

Race-linked heterogeneity in empagliflozin’s effect

In EMPEROR-Reduced, which randomized 3,730 patients with heart failure and a left ventricular ejection fraction of 40% or less, treatment of White patients with empagliflozin (Jardiance) produced a nonsignificant 16% relative reduction in the rate of the primary endpoint, compared with placebo, during a median 16-month follow-up.

By contrast, among Black patients, treatment with empagliflozin produced a significant 56% reduction in the primary endpoint, compared with placebo-treated patients, a significant heterogeneity (P = .02) in effect between the two race subgroups, said Dr. Verma, a cardiac surgeon and professor at the University of Toronto.

The analysis he reported used combined data from EMPEROR-Reduced and the companion trial EMPEROR-Preserved, which randomized 5,988 patients with heart failure and a left ventricular ejection fraction greater than 40% to treatment with either empagliflozin or placebo and followed them for a median of 26 months.

To assess the effects of the randomized treatments in the two racial subgroups, Dr. Verma and associates used pooled data from both trials, but only from the 3,502 patients enrolled in the Americas, which included 3,024 White patients and 478 Black patients. Analysis of the patients in this subgroup who were randomized to placebo showed a significantly excess rate of the primary outcome among Blacks, who tallied 49% more of the primary outcome events during follow-up than did White patients, Dr. Verma reported. The absolute rate of the primary outcome without empagliflozin treatment was 13.15 events/100 patient-years of follow-up in White patients and 20.83 events/100 patient-years in Black patients.

The impact of empagliflozin was not statistically heterogeneous in the total pool of patients that included both those with HFrEF and those with HFpEF. The drug reduced the primary outcome incidence by a significant 20% in White patients, and by a significant 44% among Black patients.

But this point-estimate difference in efficacy, when coupled with the underlying difference in risk for an event between the two racial groups, meant that the number-needed-to-treat to prevent one primary outcome event was 42 among White patients and 12 among Black patients.
 

Race-linked treatment responses only in HFrEF

This suggestion of an imbalance in treatment efficacy was especially apparent among patients with HFrEF. In addition to the heterogeneity for the primary outcome, the Black and White subgroups also showed significantly divergent results for the outcomes of first hospitalization for heart failure, with a nonsignificant 21% relative reduction with empagliflozin treatment in Whites but a significant 65% relative cut in this endpoint with empagliflozin in Blacks, and for total hospitalizations for heart failure, which showed a similar level of significant heterogeneity between the two race subgroups.

In contrast, the patients with HFpEF showed no signal at all for heterogeneous outcome rates between Black and White subgroups.

One other study outcome, change in symptom burden measured by the Kansas City Cardiomyopathy Questionnaire (KCCQ), also showed suggestion of a race-based imbalance. The adjusted mean difference from baseline in the KCCQ clinical summary score was 1.50 points higher with empagliflozin treatment, compared with placebo among all White patients (those with HFrEF and those with HFpEF), and compared with a 5.25-point increase with empagliflozin over placebo among all Black patients with heart failure in the pooled American EMPEROR dataset, a difference between White and Black patients that just missed significance (P = .06). Again, this difference was especially notable and significant among the patients with HFrEF, where the adjusted mean difference in KCCQ was a 0.77-point increase in White patients and a 6.71-point increase among Black patients (P = .043),

These results also appeared in a report published simultaneously with Dr. Verma’s talk.

But two other analyses that assessed a possible race-based difference in empagliflozin’s effect on renal protection and on functional status showed no suggestion of heterogeneity.

Dr. Verma stressed caution about the limitations of these analyses because they involved a relatively small number of Black patients, and were possibly subject to unadjusted confounding from differences in baseline characteristics between the Black and White patients.

Black patients also had a number-needed-to-treat advantage with dapagliflozin

The finding that Black patients with heart failure potentially get more bang for the buck from treatment with an SGLT2 inhibitor by having a lower number needed to treat also showed up in a separate report at the meeting that assessed the treatment effect from dapagliflozin (Farxiga) in Black and White patients in a pooled analysis of the DAPA-HF pivotal trial of patients with HFrEF and the DELIVER pivotal trial of patients with HFpEF. The pooled cohort included a total of 11,007, but for the analysis by race the investigators also limited their focus to patients from the Americas with 2,626 White patients and 381 Black patients.

Mitchel L. Zoler/MDedge News

Assessment of the effect of dapagliflozin on the primary outcome of cardiovascular death or hospitalization for heart failure among all patients, both those with HFrEF and those with HFpEF, again showed that event rates among patients treated with placebo were significantly higher in Black, compared with White patients, and this led to a difference in the number needed to treat to prevent one primary outcome event of 12 in Blacks and 17 in Whites, Jawad H. Butt, MD said in a talk at the meeting.

Although treatment with dapagliflozin reduced the rate of the primary outcome in this subgroup of patients from the DAPA-HF trial and the DELIVER trial by similar rates in Black and White patients, event rates were higher in the Black patients resulting in “greater benefit in absolute terms” for Black patients, explained Dr. Butt, a cardiologist at Rigshospitalet in Copenhagen.

But in contrast to the empagliflozin findings reported by Dr. Verma, the combined data from the dapagliflozin trials showed no suggestion of heterogeneity in the beneficial effect of dapagliflozin based on left ventricular ejection fraction. In the Black patients, for example, the relative benefit from dapagliflozin on the primary outcome was consistent across the full spectrum of patients with HFrEF and HFpEF.

EMPEROR-Reduced and EMPEROR-Preserved were sponsored by Boehringer Ingelheim and Lilly, the companies that jointly market empagliflozin (Jardiance). The DAPA-HF and DELIVER trials were sponsored by AstraZeneca, the company that markets dapagliflozin (Farxiga). Dr. Verma has received honoraria, research support, or both from AstraZeneca, Boehringer Ingelheim, and Lilly, and from numerous other companies. Dr. Butt has been a consultant to and received travel grants from AstraZeneca, honoraria from Novartis, and has been an adviser to Bayer.




 

CHICAGO – Black patients with heart failure with reduced ejection fraction (HFrEF) may receive more benefit from treatment with a sodium-glucose cotransporter-2 (SGLT2) inhibitor than do White patients, according to a new report.

A secondary analysis of data collected from the pivotal trials that assessed the SGLT2 inhibitor empagliflozin in patients with HFrEF, EMPEROR-Reduced, and in patients with heart failure with preserved ejection fraction (HFpEF), EMPEROR-Preserved, was presented by Subodh Verma, MD, PhD, at the American Heart Association scientific sessions.

Mitchel L. Zoler/MDedge News

The “hypothesis-generating” analysis of data from EMPEROR-Reduced showed “a suggestion of a greater benefit of empagliflozin” in Black, compared with White patients, for the study’s primary endpoint (cardiovascular death or hospitalization for heart failure) as well as for first and total hospitalizations for heart failure, he reported.

However, a similar but separate analysis that compared Black and White patients with heart failure who received treatment with a second agent, dapagliflozin, from the same SGLT2-inhibitor class did not show any suggestion of heterogeneity in the drug’s effect based on race.
 

Race-linked heterogeneity in empagliflozin’s effect

In EMPEROR-Reduced, which randomized 3,730 patients with heart failure and a left ventricular ejection fraction of 40% or less, treatment of White patients with empagliflozin (Jardiance) produced a nonsignificant 16% relative reduction in the rate of the primary endpoint, compared with placebo, during a median 16-month follow-up.

By contrast, among Black patients, treatment with empagliflozin produced a significant 56% reduction in the primary endpoint, compared with placebo-treated patients, a significant heterogeneity (P = .02) in effect between the two race subgroups, said Dr. Verma, a cardiac surgeon and professor at the University of Toronto.

The analysis he reported used combined data from EMPEROR-Reduced and the companion trial EMPEROR-Preserved, which randomized 5,988 patients with heart failure and a left ventricular ejection fraction greater than 40% to treatment with either empagliflozin or placebo and followed them for a median of 26 months.

To assess the effects of the randomized treatments in the two racial subgroups, Dr. Verma and associates used pooled data from both trials, but only from the 3,502 patients enrolled in the Americas, which included 3,024 White patients and 478 Black patients. Analysis of the patients in this subgroup who were randomized to placebo showed a significantly excess rate of the primary outcome among Blacks, who tallied 49% more of the primary outcome events during follow-up than did White patients, Dr. Verma reported. The absolute rate of the primary outcome without empagliflozin treatment was 13.15 events/100 patient-years of follow-up in White patients and 20.83 events/100 patient-years in Black patients.

The impact of empagliflozin was not statistically heterogeneous in the total pool of patients that included both those with HFrEF and those with HFpEF. The drug reduced the primary outcome incidence by a significant 20% in White patients, and by a significant 44% among Black patients.

But this point-estimate difference in efficacy, when coupled with the underlying difference in risk for an event between the two racial groups, meant that the number-needed-to-treat to prevent one primary outcome event was 42 among White patients and 12 among Black patients.
 

Race-linked treatment responses only in HFrEF

This suggestion of an imbalance in treatment efficacy was especially apparent among patients with HFrEF. In addition to the heterogeneity for the primary outcome, the Black and White subgroups also showed significantly divergent results for the outcomes of first hospitalization for heart failure, with a nonsignificant 21% relative reduction with empagliflozin treatment in Whites but a significant 65% relative cut in this endpoint with empagliflozin in Blacks, and for total hospitalizations for heart failure, which showed a similar level of significant heterogeneity between the two race subgroups.

In contrast, the patients with HFpEF showed no signal at all for heterogeneous outcome rates between Black and White subgroups.

One other study outcome, change in symptom burden measured by the Kansas City Cardiomyopathy Questionnaire (KCCQ), also showed suggestion of a race-based imbalance. The adjusted mean difference from baseline in the KCCQ clinical summary score was 1.50 points higher with empagliflozin treatment, compared with placebo among all White patients (those with HFrEF and those with HFpEF), and compared with a 5.25-point increase with empagliflozin over placebo among all Black patients with heart failure in the pooled American EMPEROR dataset, a difference between White and Black patients that just missed significance (P = .06). Again, this difference was especially notable and significant among the patients with HFrEF, where the adjusted mean difference in KCCQ was a 0.77-point increase in White patients and a 6.71-point increase among Black patients (P = .043),

These results also appeared in a report published simultaneously with Dr. Verma’s talk.

But two other analyses that assessed a possible race-based difference in empagliflozin’s effect on renal protection and on functional status showed no suggestion of heterogeneity.

Dr. Verma stressed caution about the limitations of these analyses because they involved a relatively small number of Black patients, and were possibly subject to unadjusted confounding from differences in baseline characteristics between the Black and White patients.

Black patients also had a number-needed-to-treat advantage with dapagliflozin

The finding that Black patients with heart failure potentially get more bang for the buck from treatment with an SGLT2 inhibitor by having a lower number needed to treat also showed up in a separate report at the meeting that assessed the treatment effect from dapagliflozin (Farxiga) in Black and White patients in a pooled analysis of the DAPA-HF pivotal trial of patients with HFrEF and the DELIVER pivotal trial of patients with HFpEF. The pooled cohort included a total of 11,007, but for the analysis by race the investigators also limited their focus to patients from the Americas with 2,626 White patients and 381 Black patients.

Mitchel L. Zoler/MDedge News

Assessment of the effect of dapagliflozin on the primary outcome of cardiovascular death or hospitalization for heart failure among all patients, both those with HFrEF and those with HFpEF, again showed that event rates among patients treated with placebo were significantly higher in Black, compared with White patients, and this led to a difference in the number needed to treat to prevent one primary outcome event of 12 in Blacks and 17 in Whites, Jawad H. Butt, MD said in a talk at the meeting.

Although treatment with dapagliflozin reduced the rate of the primary outcome in this subgroup of patients from the DAPA-HF trial and the DELIVER trial by similar rates in Black and White patients, event rates were higher in the Black patients resulting in “greater benefit in absolute terms” for Black patients, explained Dr. Butt, a cardiologist at Rigshospitalet in Copenhagen.

But in contrast to the empagliflozin findings reported by Dr. Verma, the combined data from the dapagliflozin trials showed no suggestion of heterogeneity in the beneficial effect of dapagliflozin based on left ventricular ejection fraction. In the Black patients, for example, the relative benefit from dapagliflozin on the primary outcome was consistent across the full spectrum of patients with HFrEF and HFpEF.

EMPEROR-Reduced and EMPEROR-Preserved were sponsored by Boehringer Ingelheim and Lilly, the companies that jointly market empagliflozin (Jardiance). The DAPA-HF and DELIVER trials were sponsored by AstraZeneca, the company that markets dapagliflozin (Farxiga). Dr. Verma has received honoraria, research support, or both from AstraZeneca, Boehringer Ingelheim, and Lilly, and from numerous other companies. Dr. Butt has been a consultant to and received travel grants from AstraZeneca, honoraria from Novartis, and has been an adviser to Bayer.




 

A re-evaluation of cardiovascular risk management guidelines intended for use by rheumatologists may be warranted based on findings from a recently published population-based study of the risks for 12 different cardiovascular disease outcomes in patients with autoimmune diseases.

“The notion that patients with rheumatic diseases are at increased risk of developing cardiovascular diseases has been ongoing for many years,” Nathalie Conrad, PhD, and coauthors wrote in a viewpoint article in Annals of the Rheumatic Diseases.

This has “sparked much debate concerning whether and when to initiate cardiovascular prevention therapies,” they said.

Dr. Conrad was first author on the population-based study published in The Lancet in August 2022 that used linked primary and secondary care records from datasets in the U.K. Clinical Practice Research Datalink involving individuals who were recently diagnosed with any of 19 different autoimmune diseases during an 18-year period stretching from 2000 to 2017 but free of cardiovascular disease until at least 12 months after incident autoimmune disease. “Every single autoimmune disorder we looked at was associated with increased cardiovascular risk,” Dr. Conrad, of the department of public health and primary care at Catholic University Leuven (Belgium), said in an interview.

Not only was the risk for cardiovascular disease increased for people with rheumatic diseases by an average of 68%, compared with people without rheumatic diseases, but also the whole spectrum of cardiovascular disorders was seen.

“We saw increases in thromboembolic diseases, degenerative heart diseases, and heart inflammation,” Dr. Conrad said.
 

Large datasets examined

The idea for the epidemiologic study came from mounting evidence for cardiovascular disease risk among people with autoimmune diseases but not enough to support the design of specific prevention measures.

Dr. Conrad’s Lancet study examined electronic health records of 446,449 individuals with autoimmune diseases and matched them to 2,102,830 individuals without autoimmune disease. This included 160,217 individuals with seven rheumatic diseases: rheumatoid arthritis, polymyalgia rheumatica, vasculitis, systemic lupus erythematosus, Sjögren’s syndrome, ankylosing spondylitis, and systemic sclerosis.

In addition to looking for any evidence of cardiovascular disease, Dr. Conrad and coauthors looked at 12 specific outcomes: atherosclerotic diseases, peripheral arterial disease, stroke or transient ischemic attack, heart failure, valve disorders, thromboembolic disease, atrial fibrillation or flutter, conduction system disease, supraventricular arrhythmias, aortic aneurysm, myocarditis and pericarditis, and infective endocarditis.
 

CV risk in rheumatic diseases

As might be expected, “greater magnitudes of risk” were seen for individuals with systemic lupus erythematosus and systemic sclerosis than for people in the general population, with the chances of cardiovascular disease being two to four times higher. But what perhaps wasn’t expected was that all rheumatic diseases carried an increased risk for heart or vascular-related problems.

Furthermore, the increased risk could not solely be accounted for by the presence of traditional risk factors, such as blood pressure, smoking, or obesity.

“The background here is that any context of systemic inflammation would be predicted to lead to an increased vascular risk,” Iain McInnes, MD, PhD, professor of medicine and rheumatology at the University of Glasgow, said in an interview. Dr. McInnes was a coauthor of the viewpoint article in Annals of the Rheumatic Diseases.

“The implication is that there may well be increased vascular risk across the whole range of immune-mediated inflammatory diseases,” he added. “We should not, however, infer the magnitude of risk will be the same for each disease.”

What is more intriguing, Dr. McInnes said, is that “we don’t know yet whether there’s one final common pathway that leads to the blood vessel being damaged or whether different diseases might contribute different pathways.”

He added: “A question for the future is to see what are those mechanisms that drive risk across different diseases? And the reason that matters, of course, is that we might want to think about the effectiveness of different therapeutic interventions.”
 

Determining cardiovascular risk

Dr. Conrad and associates in their viewpoint article suggested that an update to the European Alliance of Associations for Rheumatology guidelines for cardiovascular risk management of rheumatic and musculoskeletal diseases (RMDs) could tailor cardiovascular risk scores to certain diseases.

They suggested that the guidelines could consider a risk multiplier of 2.5 for systemic sclerosis, 2.0 for lupus, and 1.5 for any other rheumatic disease.

“We argue that [EULAR] recommendations should consider this new evidence of poorer cardiovascular health in numerous RMDs and envisage cardiovascular screening and associated prevention measures,” Dr. Conrad said.

While they recognize that risk multipliers aren’t perfect, “they are the best available option until personalized risk prediction tools are developed specifically for patients with RMDs.”
 

Addressing cardiovascular risk

As a former president of EULAR, Dr. McInnes was keen to point out that “EULAR’s recommendations are evidence based and are rigorously built on [standard operating procedures] that work and have stood the test of time. I’m quite sure that the members of relevant EULAR task forces will be looking at these data, but they’ll be looking at the whole range of literature to see whether change is necessary.”

Good-quality inflammatory disease control will certainly contribute to reducing vascular risk, “but we should not make the assumption that it will be sufficient,” he cautioned. “We still have to be very careful in addressing so called conventional risk factors, but in particular thinking about obesity and cardiometabolic syndrome to be sure that when those are present, that we detect them and we treat them appropriately.”

As to who is best placed to manage a patient’s cardiovascular risk profile, Dr. McInnes said: “I think the rheumatologist has a responsibility to make sure that as much of the patient’s disease spectrum is being treated as possible.”

“As a rheumatologist, I would like to know that those elements of a patient’s disease presentation are being addressed,” whether that is by a primary care physician, cardiologist, diabetologist, or other specialist involved in the optimal management of the patient.

Dr. Conrad acknowledged receiving support from the European Union’s Horizon 2020 Program, the European Society for Cardiology, and grant funding paid to her institution from the Belgian-based Research Foundation Flounders. She also acknowledged receipt of royalties in regard to the intellectual property of a home-monitoring system for heart failure paid to Oxford University Innovation. Dr. McInnes acknowledged financial relationships with many pharmaceutical companies.

*This article was updated 12/30/2022.

A re-evaluation of cardiovascular risk management guidelines intended for use by rheumatologists may be warranted based on findings from a recently published population-based study of the risks for 12 different cardiovascular disease outcomes in patients with autoimmune diseases.

“The notion that patients with rheumatic diseases are at increased risk of developing cardiovascular diseases has been ongoing for many years,” Nathalie Conrad, PhD, and coauthors wrote in a viewpoint article in Annals of the Rheumatic Diseases.

This has “sparked much debate concerning whether and when to initiate cardiovascular prevention therapies,” they said.

Dr. Conrad was first author on the population-based study published in The Lancet in August 2022 that used linked primary and secondary care records from datasets in the U.K. Clinical Practice Research Datalink involving individuals who were recently diagnosed with any of 19 different autoimmune diseases during an 18-year period stretching from 2000 to 2017 but free of cardiovascular disease until at least 12 months after incident autoimmune disease. “Every single autoimmune disorder we looked at was associated with increased cardiovascular risk,” Dr. Conrad, of the department of public health and primary care at Catholic University Leuven (Belgium), said in an interview.

Not only was the risk for cardiovascular disease increased for people with rheumatic diseases by an average of 68%, compared with people without rheumatic diseases, but also the whole spectrum of cardiovascular disorders was seen.

“We saw increases in thromboembolic diseases, degenerative heart diseases, and heart inflammation,” Dr. Conrad said.
 

Large datasets examined

The idea for the epidemiologic study came from mounting evidence for cardiovascular disease risk among people with autoimmune diseases but not enough to support the design of specific prevention measures.

Dr. Conrad’s Lancet study examined electronic health records of 446,449 individuals with autoimmune diseases and matched them to 2,102,830 individuals without autoimmune disease. This included 160,217 individuals with seven rheumatic diseases: rheumatoid arthritis, polymyalgia rheumatica, vasculitis, systemic lupus erythematosus, Sjögren’s syndrome, ankylosing spondylitis, and systemic sclerosis.

In addition to looking for any evidence of cardiovascular disease, Dr. Conrad and coauthors looked at 12 specific outcomes: atherosclerotic diseases, peripheral arterial disease, stroke or transient ischemic attack, heart failure, valve disorders, thromboembolic disease, atrial fibrillation or flutter, conduction system disease, supraventricular arrhythmias, aortic aneurysm, myocarditis and pericarditis, and infective endocarditis.
 

CV risk in rheumatic diseases

As might be expected, “greater magnitudes of risk” were seen for individuals with systemic lupus erythematosus and systemic sclerosis than for people in the general population, with the chances of cardiovascular disease being two to four times higher. But what perhaps wasn’t expected was that all rheumatic diseases carried an increased risk for heart or vascular-related problems.

Furthermore, the increased risk could not solely be accounted for by the presence of traditional risk factors, such as blood pressure, smoking, or obesity.

“The background here is that any context of systemic inflammation would be predicted to lead to an increased vascular risk,” Iain McInnes, MD, PhD, professor of medicine and rheumatology at the University of Glasgow, said in an interview. Dr. McInnes was a coauthor of the viewpoint article in Annals of the Rheumatic Diseases.

“The implication is that there may well be increased vascular risk across the whole range of immune-mediated inflammatory diseases,” he added. “We should not, however, infer the magnitude of risk will be the same for each disease.”

What is more intriguing, Dr. McInnes said, is that “we don’t know yet whether there’s one final common pathway that leads to the blood vessel being damaged or whether different diseases might contribute different pathways.”

He added: “A question for the future is to see what are those mechanisms that drive risk across different diseases? And the reason that matters, of course, is that we might want to think about the effectiveness of different therapeutic interventions.”
 

Determining cardiovascular risk

Dr. Conrad and associates in their viewpoint article suggested that an update to the European Alliance of Associations for Rheumatology guidelines for cardiovascular risk management of rheumatic and musculoskeletal diseases (RMDs) could tailor cardiovascular risk scores to certain diseases.

They suggested that the guidelines could consider a risk multiplier of 2.5 for systemic sclerosis, 2.0 for lupus, and 1.5 for any other rheumatic disease.

“We argue that [EULAR] recommendations should consider this new evidence of poorer cardiovascular health in numerous RMDs and envisage cardiovascular screening and associated prevention measures,” Dr. Conrad said.

While they recognize that risk multipliers aren’t perfect, “they are the best available option until personalized risk prediction tools are developed specifically for patients with RMDs.”
 

Addressing cardiovascular risk

As a former president of EULAR, Dr. McInnes was keen to point out that “EULAR’s recommendations are evidence based and are rigorously built on [standard operating procedures] that work and have stood the test of time. I’m quite sure that the members of relevant EULAR task forces will be looking at these data, but they’ll be looking at the whole range of literature to see whether change is necessary.”

Good-quality inflammatory disease control will certainly contribute to reducing vascular risk, “but we should not make the assumption that it will be sufficient,” he cautioned. “We still have to be very careful in addressing so called conventional risk factors, but in particular thinking about obesity and cardiometabolic syndrome to be sure that when those are present, that we detect them and we treat them appropriately.”

As to who is best placed to manage a patient’s cardiovascular risk profile, Dr. McInnes said: “I think the rheumatologist has a responsibility to make sure that as much of the patient’s disease spectrum is being treated as possible.”

“As a rheumatologist, I would like to know that those elements of a patient’s disease presentation are being addressed,” whether that is by a primary care physician, cardiologist, diabetologist, or other specialist involved in the optimal management of the patient.

Dr. Conrad acknowledged receiving support from the European Union’s Horizon 2020 Program, the European Society for Cardiology, and grant funding paid to her institution from the Belgian-based Research Foundation Flounders. She also acknowledged receipt of royalties in regard to the intellectual property of a home-monitoring system for heart failure paid to Oxford University Innovation. Dr. McInnes acknowledged financial relationships with many pharmaceutical companies.

*This article was updated 12/30/2022.

A re-evaluation of cardiovascular risk management guidelines intended for use by rheumatologists may be warranted based on findings from a recently published population-based study of the risks for 12 different cardiovascular disease outcomes in patients with autoimmune diseases.

“The notion that patients with rheumatic diseases are at increased risk of developing cardiovascular diseases has been ongoing for many years,” Nathalie Conrad, PhD, and coauthors wrote in a viewpoint article in Annals of the Rheumatic Diseases.

This has “sparked much debate concerning whether and when to initiate cardiovascular prevention therapies,” they said.

Dr. Conrad was first author on the population-based study published in The Lancet in August 2022 that used linked primary and secondary care records from datasets in the U.K. Clinical Practice Research Datalink involving individuals who were recently diagnosed with any of 19 different autoimmune diseases during an 18-year period stretching from 2000 to 2017 but free of cardiovascular disease until at least 12 months after incident autoimmune disease. “Every single autoimmune disorder we looked at was associated with increased cardiovascular risk,” Dr. Conrad, of the department of public health and primary care at Catholic University Leuven (Belgium), said in an interview.

Not only was the risk for cardiovascular disease increased for people with rheumatic diseases by an average of 68%, compared with people without rheumatic diseases, but also the whole spectrum of cardiovascular disorders was seen.

“We saw increases in thromboembolic diseases, degenerative heart diseases, and heart inflammation,” Dr. Conrad said.
 

Large datasets examined

The idea for the epidemiologic study came from mounting evidence for cardiovascular disease risk among people with autoimmune diseases but not enough to support the design of specific prevention measures.

Dr. Conrad’s Lancet study examined electronic health records of 446,449 individuals with autoimmune diseases and matched them to 2,102,830 individuals without autoimmune disease. This included 160,217 individuals with seven rheumatic diseases: rheumatoid arthritis, polymyalgia rheumatica, vasculitis, systemic lupus erythematosus, Sjögren’s syndrome, ankylosing spondylitis, and systemic sclerosis.

In addition to looking for any evidence of cardiovascular disease, Dr. Conrad and coauthors looked at 12 specific outcomes: atherosclerotic diseases, peripheral arterial disease, stroke or transient ischemic attack, heart failure, valve disorders, thromboembolic disease, atrial fibrillation or flutter, conduction system disease, supraventricular arrhythmias, aortic aneurysm, myocarditis and pericarditis, and infective endocarditis.
 

CV risk in rheumatic diseases

As might be expected, “greater magnitudes of risk” were seen for individuals with systemic lupus erythematosus and systemic sclerosis than for people in the general population, with the chances of cardiovascular disease being two to four times higher. But what perhaps wasn’t expected was that all rheumatic diseases carried an increased risk for heart or vascular-related problems.

Furthermore, the increased risk could not solely be accounted for by the presence of traditional risk factors, such as blood pressure, smoking, or obesity.

“The background here is that any context of systemic inflammation would be predicted to lead to an increased vascular risk,” Iain McInnes, MD, PhD, professor of medicine and rheumatology at the University of Glasgow, said in an interview. Dr. McInnes was a coauthor of the viewpoint article in Annals of the Rheumatic Diseases.

“The implication is that there may well be increased vascular risk across the whole range of immune-mediated inflammatory diseases,” he added. “We should not, however, infer the magnitude of risk will be the same for each disease.”

What is more intriguing, Dr. McInnes said, is that “we don’t know yet whether there’s one final common pathway that leads to the blood vessel being damaged or whether different diseases might contribute different pathways.”

He added: “A question for the future is to see what are those mechanisms that drive risk across different diseases? And the reason that matters, of course, is that we might want to think about the effectiveness of different therapeutic interventions.”
 

Determining cardiovascular risk

Dr. Conrad and associates in their viewpoint article suggested that an update to the European Alliance of Associations for Rheumatology guidelines for cardiovascular risk management of rheumatic and musculoskeletal diseases (RMDs) could tailor cardiovascular risk scores to certain diseases.

They suggested that the guidelines could consider a risk multiplier of 2.5 for systemic sclerosis, 2.0 for lupus, and 1.5 for any other rheumatic disease.

“We argue that [EULAR] recommendations should consider this new evidence of poorer cardiovascular health in numerous RMDs and envisage cardiovascular screening and associated prevention measures,” Dr. Conrad said.

While they recognize that risk multipliers aren’t perfect, “they are the best available option until personalized risk prediction tools are developed specifically for patients with RMDs.”
 

Addressing cardiovascular risk

As a former president of EULAR, Dr. McInnes was keen to point out that “EULAR’s recommendations are evidence based and are rigorously built on [standard operating procedures] that work and have stood the test of time. I’m quite sure that the members of relevant EULAR task forces will be looking at these data, but they’ll be looking at the whole range of literature to see whether change is necessary.”

Good-quality inflammatory disease control will certainly contribute to reducing vascular risk, “but we should not make the assumption that it will be sufficient,” he cautioned. “We still have to be very careful in addressing so called conventional risk factors, but in particular thinking about obesity and cardiometabolic syndrome to be sure that when those are present, that we detect them and we treat them appropriately.”

As to who is best placed to manage a patient’s cardiovascular risk profile, Dr. McInnes said: “I think the rheumatologist has a responsibility to make sure that as much of the patient’s disease spectrum is being treated as possible.”

“As a rheumatologist, I would like to know that those elements of a patient’s disease presentation are being addressed,” whether that is by a primary care physician, cardiologist, diabetologist, or other specialist involved in the optimal management of the patient.

Dr. Conrad acknowledged receiving support from the European Union’s Horizon 2020 Program, the European Society for Cardiology, and grant funding paid to her institution from the Belgian-based Research Foundation Flounders. She also acknowledged receipt of royalties in regard to the intellectual property of a home-monitoring system for heart failure paid to Oxford University Innovation. Dr. McInnes acknowledged financial relationships with many pharmaceutical companies.

*This article was updated 12/30/2022.

High levels of lipoprotein(a) increase the risk for incident cardiovascular disease (CVD) for hypertensive individuals but not for those without hypertension, a new MESA analysis suggests.

There are ways to test for statistical interaction, “in this case, multiplicative interaction between Lp(a) and hypertension, which suggests that Lp(a) is actually modifying the effect between blood pressure and cardiovascular disease. It’s not simply additive,” senior author Michael D. Shapiro, DO, Wake Forest University, Winston-Salem, N.C., told this news organization.

“So that’s new and I don’t think anybody’s looked at that before.”

Although Lp(a) is recognized as an independent cause of atherosclerotic CVD (ASCVD), the significance of Lp(a) in hypertension has been “virtually untapped,” he noted. A recent prospective study reported that elevated CVD risk was present only in individuals with Lp(a) ≥ 30 mg/dL and hypertension but it included only Chinese participants with stable coronary artery disease.

The current analysis, published online in the journal Hypertension, included 6,674 participants in the ongoing Multi-Ethnic Study of Atherosclerosis (MESA), all free of baseline ASCVD, who were recruited from six communities in the United States and had measured baseline Lp(a), blood pressure, and CVD events data over follow-up from 2000 to 2018.

Participants were stratified into four groups based on the presence or absence of hypertension (defined as 140/90 mm Hg or higher or the use of antihypertensive drugs) and an Lp(a) threshold of 50 mg/dL, as recommended by the American College of Cardiology/American Heart Association cholesterol guideline for consideration as an ASCVD risk-enhancing factor.

Slightly more than half of participants were female (52.8%), 38.6% were White, 27.5% were African American, 22.1% were Hispanic, and 11.9% were Chinese American.

According to the researchers, 809 participants had a CVD event over an average follow-up of 13.9 years, including 7.7% of group 1 with Lp(a) < 50 mg/dL and no hypertension, 8.0% of group 2 with Lp(a) ≥ 50 mg/dL and no hypertension, 16.2% of group 3 with Lp(a) < 50 mg/dL and hypertension, and 18.8% of group 4 with Lp(a) ≥ 50 mg/dL and hypertension.

When compared with group 1 in a fully adjusted Cox proportional model, participants with elevated Lp(a) and no hypertension (group 2) did not have an increased risk of CVD events (hazard ratio [HR], 1.09; 95% confidence interval [CI], 0.79-1.50).

CVD risk, however, was significantly higher in group 3 with normal Lp(a) and hypertension (HR, 1.66; 95% CI, 1.39-1.98) and group 4 with elevated Lp(a) and hypertension (HR, 2.07, 95% CI, 1.63-2.62).

Among all participants with hypertension (groups 3 and 4), Lp(a) was associated with a significant increase in CVD risk (HR, 1.24, 95% CI, 1.01-1.53).

“What I think is interesting here is that in the absence of hypertension, we didn’t really see an increased risk despite having an elevated Lp(a),” said Dr. Shapiro. “What it may indicate is that really for Lp(a) to be associated with risk, there may already need to be some kind of arterial damage that allows the Lp(a) to have its atherogenic impact.

“In other words, in individuals who have totally normal arterial walls, potentially, maybe that is protective enough against Lp(a) that in the absence of any other injurious factor, maybe it’s not an issue,” he said. “That’s a big hypothesis-generating [statement], but hypertension is certainly one of those risk factors that’s known to cause endothelial injury and endothelial dysfunction.”

Dr. Shapiro pointed out that when first measured in MESA, Lp(a) was measured in 4,600 participants who were not on statins, which is important because statins can increase Lp(a) levels.

“When you look just at those participants, those 4,600, you actually do see a relationship between Lp(a) and cardiovascular disease,” he said. “When you look at the whole population, including the 17% who are baseline populations, even when you adjust for statin therapy, we fail to see that, at least in the long-term follow up.”

Nevertheless, he cautioned that hypertension is just one of many traditional cardiovascular risk factors that could affect the relationship between Lp(a) and CVD risk. “I don’t want to suggest that we believe there’s something specifically magical about hypertension and Lp(a). If we chose, say, diabetes or smoking or another traditional risk factor, we may or may not have seen kind of similar results.”

When the investigators stratified the analyses by sex and race/ethnicity, they found that Lp(a) was not associated with CVD risk, regardless of hypertension status. In Black participants, however, greater CVD risk was seen when both elevated Lp(a) and hypertension were present (HR, 2.07, 95% CI, 1.34-3.21; P = .001).

Asked whether the results support one-time universal screening for Lp(a), which is almost exclusively genetically determined, Dr. Shapiro said he supports screening but that this was a secondary analysis and its numbers were modest. He added that median Lp(a) level is higher in African Americans than any other racial/ethnic group but the “most recent data has clarified that, per any absolute level of Lp(a), it appears to confer the same absolute risk in any racial or ethnic group.”

The authors acknowledge that differential loss to follow-up could have resulted in selection bias in the study and that there were relatively few CVD events in group 2, which may have limited the ability to detect differences in groups without hypertension, particularly in the subgroup analyses. Other limitations are the potential for residual confounding and participants may have developed hypertension during follow-up, resulting in misclassification bias.

Further research is needed to better understand the mechanistic link between Lp(a), hypertension, and CVD, Dr. Shapiro said. Further insights also should be provided by the ongoing phase 3 Lp(a) HORIZON trial evaluating the effect of Lp(a) lowering with the investigational antisense drug, pelacarsen, on cardiovascular events in 8,324 patients with established CVD and elevated Lp(a). The study is expected to be completed in May 2025.

The study was supported by contracts from the National Heart, Lung, and Blood Institute and by grants from the National Center for Advanced Translational Sciences. Dr. Shapiro reports participating in scientific advisory boards with Amgen, Novartis, and Novo Nordisk, and consulting for Regeneron.

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

High levels of lipoprotein(a) increase the risk for incident cardiovascular disease (CVD) for hypertensive individuals but not for those without hypertension, a new MESA analysis suggests.

There are ways to test for statistical interaction, “in this case, multiplicative interaction between Lp(a) and hypertension, which suggests that Lp(a) is actually modifying the effect between blood pressure and cardiovascular disease. It’s not simply additive,” senior author Michael D. Shapiro, DO, Wake Forest University, Winston-Salem, N.C., told this news organization.

“So that’s new and I don’t think anybody’s looked at that before.”

Although Lp(a) is recognized as an independent cause of atherosclerotic CVD (ASCVD), the significance of Lp(a) in hypertension has been “virtually untapped,” he noted. A recent prospective study reported that elevated CVD risk was present only in individuals with Lp(a) ≥ 30 mg/dL and hypertension but it included only Chinese participants with stable coronary artery disease.

The current analysis, published online in the journal Hypertension, included 6,674 participants in the ongoing Multi-Ethnic Study of Atherosclerosis (MESA), all free of baseline ASCVD, who were recruited from six communities in the United States and had measured baseline Lp(a), blood pressure, and CVD events data over follow-up from 2000 to 2018.

Participants were stratified into four groups based on the presence or absence of hypertension (defined as 140/90 mm Hg or higher or the use of antihypertensive drugs) and an Lp(a) threshold of 50 mg/dL, as recommended by the American College of Cardiology/American Heart Association cholesterol guideline for consideration as an ASCVD risk-enhancing factor.

Slightly more than half of participants were female (52.8%), 38.6% were White, 27.5% were African American, 22.1% were Hispanic, and 11.9% were Chinese American.

According to the researchers, 809 participants had a CVD event over an average follow-up of 13.9 years, including 7.7% of group 1 with Lp(a) < 50 mg/dL and no hypertension, 8.0% of group 2 with Lp(a) ≥ 50 mg/dL and no hypertension, 16.2% of group 3 with Lp(a) < 50 mg/dL and hypertension, and 18.8% of group 4 with Lp(a) ≥ 50 mg/dL and hypertension.

When compared with group 1 in a fully adjusted Cox proportional model, participants with elevated Lp(a) and no hypertension (group 2) did not have an increased risk of CVD events (hazard ratio [HR], 1.09; 95% confidence interval [CI], 0.79-1.50).

CVD risk, however, was significantly higher in group 3 with normal Lp(a) and hypertension (HR, 1.66; 95% CI, 1.39-1.98) and group 4 with elevated Lp(a) and hypertension (HR, 2.07, 95% CI, 1.63-2.62).

Among all participants with hypertension (groups 3 and 4), Lp(a) was associated with a significant increase in CVD risk (HR, 1.24, 95% CI, 1.01-1.53).

“What I think is interesting here is that in the absence of hypertension, we didn’t really see an increased risk despite having an elevated Lp(a),” said Dr. Shapiro. “What it may indicate is that really for Lp(a) to be associated with risk, there may already need to be some kind of arterial damage that allows the Lp(a) to have its atherogenic impact.

“In other words, in individuals who have totally normal arterial walls, potentially, maybe that is protective enough against Lp(a) that in the absence of any other injurious factor, maybe it’s not an issue,” he said. “That’s a big hypothesis-generating [statement], but hypertension is certainly one of those risk factors that’s known to cause endothelial injury and endothelial dysfunction.”

Dr. Shapiro pointed out that when first measured in MESA, Lp(a) was measured in 4,600 participants who were not on statins, which is important because statins can increase Lp(a) levels.

“When you look just at those participants, those 4,600, you actually do see a relationship between Lp(a) and cardiovascular disease,” he said. “When you look at the whole population, including the 17% who are baseline populations, even when you adjust for statin therapy, we fail to see that, at least in the long-term follow up.”

Nevertheless, he cautioned that hypertension is just one of many traditional cardiovascular risk factors that could affect the relationship between Lp(a) and CVD risk. “I don’t want to suggest that we believe there’s something specifically magical about hypertension and Lp(a). If we chose, say, diabetes or smoking or another traditional risk factor, we may or may not have seen kind of similar results.”

When the investigators stratified the analyses by sex and race/ethnicity, they found that Lp(a) was not associated with CVD risk, regardless of hypertension status. In Black participants, however, greater CVD risk was seen when both elevated Lp(a) and hypertension were present (HR, 2.07, 95% CI, 1.34-3.21; P = .001).

Asked whether the results support one-time universal screening for Lp(a), which is almost exclusively genetically determined, Dr. Shapiro said he supports screening but that this was a secondary analysis and its numbers were modest. He added that median Lp(a) level is higher in African Americans than any other racial/ethnic group but the “most recent data has clarified that, per any absolute level of Lp(a), it appears to confer the same absolute risk in any racial or ethnic group.”

The authors acknowledge that differential loss to follow-up could have resulted in selection bias in the study and that there were relatively few CVD events in group 2, which may have limited the ability to detect differences in groups without hypertension, particularly in the subgroup analyses. Other limitations are the potential for residual confounding and participants may have developed hypertension during follow-up, resulting in misclassification bias.

Further research is needed to better understand the mechanistic link between Lp(a), hypertension, and CVD, Dr. Shapiro said. Further insights also should be provided by the ongoing phase 3 Lp(a) HORIZON trial evaluating the effect of Lp(a) lowering with the investigational antisense drug, pelacarsen, on cardiovascular events in 8,324 patients with established CVD and elevated Lp(a). The study is expected to be completed in May 2025.

The study was supported by contracts from the National Heart, Lung, and Blood Institute and by grants from the National Center for Advanced Translational Sciences. Dr. Shapiro reports participating in scientific advisory boards with Amgen, Novartis, and Novo Nordisk, and consulting for Regeneron.

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

High levels of lipoprotein(a) increase the risk for incident cardiovascular disease (CVD) for hypertensive individuals but not for those without hypertension, a new MESA analysis suggests.

There are ways to test for statistical interaction, “in this case, multiplicative interaction between Lp(a) and hypertension, which suggests that Lp(a) is actually modifying the effect between blood pressure and cardiovascular disease. It’s not simply additive,” senior author Michael D. Shapiro, DO, Wake Forest University, Winston-Salem, N.C., told this news organization.

“So that’s new and I don’t think anybody’s looked at that before.”

Although Lp(a) is recognized as an independent cause of atherosclerotic CVD (ASCVD), the significance of Lp(a) in hypertension has been “virtually untapped,” he noted. A recent prospective study reported that elevated CVD risk was present only in individuals with Lp(a) ≥ 30 mg/dL and hypertension but it included only Chinese participants with stable coronary artery disease.

The current analysis, published online in the journal Hypertension, included 6,674 participants in the ongoing Multi-Ethnic Study of Atherosclerosis (MESA), all free of baseline ASCVD, who were recruited from six communities in the United States and had measured baseline Lp(a), blood pressure, and CVD events data over follow-up from 2000 to 2018.

Participants were stratified into four groups based on the presence or absence of hypertension (defined as 140/90 mm Hg or higher or the use of antihypertensive drugs) and an Lp(a) threshold of 50 mg/dL, as recommended by the American College of Cardiology/American Heart Association cholesterol guideline for consideration as an ASCVD risk-enhancing factor.

Slightly more than half of participants were female (52.8%), 38.6% were White, 27.5% were African American, 22.1% were Hispanic, and 11.9% were Chinese American.

According to the researchers, 809 participants had a CVD event over an average follow-up of 13.9 years, including 7.7% of group 1 with Lp(a) < 50 mg/dL and no hypertension, 8.0% of group 2 with Lp(a) ≥ 50 mg/dL and no hypertension, 16.2% of group 3 with Lp(a) < 50 mg/dL and hypertension, and 18.8% of group 4 with Lp(a) ≥ 50 mg/dL and hypertension.

When compared with group 1 in a fully adjusted Cox proportional model, participants with elevated Lp(a) and no hypertension (group 2) did not have an increased risk of CVD events (hazard ratio [HR], 1.09; 95% confidence interval [CI], 0.79-1.50).

CVD risk, however, was significantly higher in group 3 with normal Lp(a) and hypertension (HR, 1.66; 95% CI, 1.39-1.98) and group 4 with elevated Lp(a) and hypertension (HR, 2.07, 95% CI, 1.63-2.62).

Among all participants with hypertension (groups 3 and 4), Lp(a) was associated with a significant increase in CVD risk (HR, 1.24, 95% CI, 1.01-1.53).

“What I think is interesting here is that in the absence of hypertension, we didn’t really see an increased risk despite having an elevated Lp(a),” said Dr. Shapiro. “What it may indicate is that really for Lp(a) to be associated with risk, there may already need to be some kind of arterial damage that allows the Lp(a) to have its atherogenic impact.

“In other words, in individuals who have totally normal arterial walls, potentially, maybe that is protective enough against Lp(a) that in the absence of any other injurious factor, maybe it’s not an issue,” he said. “That’s a big hypothesis-generating [statement], but hypertension is certainly one of those risk factors that’s known to cause endothelial injury and endothelial dysfunction.”

Dr. Shapiro pointed out that when first measured in MESA, Lp(a) was measured in 4,600 participants who were not on statins, which is important because statins can increase Lp(a) levels.

“When you look just at those participants, those 4,600, you actually do see a relationship between Lp(a) and cardiovascular disease,” he said. “When you look at the whole population, including the 17% who are baseline populations, even when you adjust for statin therapy, we fail to see that, at least in the long-term follow up.”

Nevertheless, he cautioned that hypertension is just one of many traditional cardiovascular risk factors that could affect the relationship between Lp(a) and CVD risk. “I don’t want to suggest that we believe there’s something specifically magical about hypertension and Lp(a). If we chose, say, diabetes or smoking or another traditional risk factor, we may or may not have seen kind of similar results.”

When the investigators stratified the analyses by sex and race/ethnicity, they found that Lp(a) was not associated with CVD risk, regardless of hypertension status. In Black participants, however, greater CVD risk was seen when both elevated Lp(a) and hypertension were present (HR, 2.07, 95% CI, 1.34-3.21; P = .001).

Asked whether the results support one-time universal screening for Lp(a), which is almost exclusively genetically determined, Dr. Shapiro said he supports screening but that this was a secondary analysis and its numbers were modest. He added that median Lp(a) level is higher in African Americans than any other racial/ethnic group but the “most recent data has clarified that, per any absolute level of Lp(a), it appears to confer the same absolute risk in any racial or ethnic group.”

The authors acknowledge that differential loss to follow-up could have resulted in selection bias in the study and that there were relatively few CVD events in group 2, which may have limited the ability to detect differences in groups without hypertension, particularly in the subgroup analyses. Other limitations are the potential for residual confounding and participants may have developed hypertension during follow-up, resulting in misclassification bias.

Further research is needed to better understand the mechanistic link between Lp(a), hypertension, and CVD, Dr. Shapiro said. Further insights also should be provided by the ongoing phase 3 Lp(a) HORIZON trial evaluating the effect of Lp(a) lowering with the investigational antisense drug, pelacarsen, on cardiovascular events in 8,324 patients with established CVD and elevated Lp(a). The study is expected to be completed in May 2025.

The study was supported by contracts from the National Heart, Lung, and Blood Institute and by grants from the National Center for Advanced Translational Sciences. Dr. Shapiro reports participating in scientific advisory boards with Amgen, Novartis, and Novo Nordisk, and consulting for Regeneron.

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

Dispatching trained volunteer responders via smartphones to retrieve automated external defibrillators for patients in out-of-hospital cardiac arrest (OHCA) did not significantly increase bystander AED use in a randomized clinical trial in Sweden.

Most patients in OHCA can be saved if cardiopulmonary resuscitation and defibrillation are initiated within minutes, but despite the “substantial” public availability of AEDs and widespread CPR training among the Swedish public, use rates of both are low, Mattias Ringh, MD, PhD, of Karolinska Institutet in Stockholm, and colleagues wrote.

A previous study by the team showed that dispatching volunteer responders via a smartphone app significantly increased bystander CPR. The current study, called the Swedish AED and Mobile Bystander Activation (SAMBA) trial, aimed to see whether dispatching volunteer responders to collect a nearby AED would increase bystander AED use. A control group of volunteer responders was instructed to go straight to the scene and start CPR.

“The results showed that the volunteer responders were first to provide treatment with both CPR and AEDs in a large proportion of cases in both groups, thereby creating a ‘statistical’ dilutional effect,” Dr. Ringh said in an interview. In effect, the control arm also became an active arm.

“But if we agree that treatment with AEDs and CPR is saving lives, then dispatching volunteer responders is doing just that, although we could not fully measure the effect in our study,” he added.

The study was published online in JAMA Cardiology.
 

No significant differences

The SAMBA trial assessed outcomes of the smartphone dispatch system (Heartrunner), which is triggered at emergency dispatch centers in response to suspected OHCAs at the same time that an ambulance with advanced life support equipment is dispatched.

The volunteer responder system locates a maximum of 30 volunteer responders within a 1.3-km radius from the suspected out-of-hospital cardiac arrest, the researchers explained in their report. Volunteer responders are requested via their smartphone application to accept or decline the alert. If they accept an alert, the volunteer responders receive map-aided route directions to the location of the suspected arrest.

In patients allocated to intervention in this study, four of five of all volunteer responders who accepted the alert received instructions to collect the nearest available AED and then go directly to the patient with suspected out-of-hospital cardiac arrest, the authors noted. Route directions to the scene of the cardiac arrest and the AED were displayed on their smartphones. One of the 5 volunteer responders, closest to the arrest, was dispatched to go directly to initiate CPR.

In patients allocated to the control group, all volunteer responders who accepted the alert were instructed to go directly to the patient with suspected out-of-hospital cardiac arrest to perform CPR. No route directions to or locations of AEDs were displayed.

The study was conducted in Stockholm and in Västra Götaland from 2018 to 2020. At the start of the study, there were 3,123 AEDs and 24,493 volunteer responders in Stockholm and 3,195 AEDs and 19,117 volunteer responders in Västra Götaland.

Post-randomization exclusions included patients without OHCA, those with OHCAs not treated by emergency medical services, and those with OHCAs witnessed by EMS.

The primary outcome was overall bystander AED attachment before the arrival of EMS, including those attached by the volunteer responders but also by lay volunteers who did not use the smartphone app.

Volunteer responders were activated for 947 individuals with OHCA; 461 patients were randomized to the intervention group and 486 to the control group. In both groups, the patients’ median age was 73 and about 65% were men.

Attachment of the AED before the arrival of EMS or first responders occurred in 61 patients (13.2%) in the intervention group versus 46 (9.5%) in the control group (P = .08). However, the majority of all AEDs were attached by lay volunteers who were not volunteer responders using the smartphone app (37 in the intervention arm vs. 28 in the control arm), the researchers noted.

No significant differences were seen in secondary outcomes, which included bystander CPR (69% vs. 71.6%, respectively) and defibrillation before EMS arrival (3.7% vs. 3.9%) between groups.

Among the volunteer responders using the app, crossover was 11% and compliance to instructions was 31%. Overall, volunteer responders attached 38% of all bystander-attached AEDs and provided 45% of all bystander defibrillations and 43% of all bystander CPR.

Going forward, Dr. Ringh and colleagues will be further analyzing the results to understand how to better optimize the logistical challenges involved with smartphone dispatch to OHCA patients. “In the longer term, investigating the impact on survival is also warranted,” he concluded.
 

U.S. in worse shape

In a comment, Christopher Calandrella, DO, chair of emergency medicine at Long Island Jewish Forest Hills,, New York, part of Northwell Health, said: “Significant data are available to support the importance of prompt initiation of CPR and defibrillation for OHCA, and although this study did not demonstrate a meaningful increase in use of AEDs with the trial system, layperson CPR was initiated in approximately 70% of cases in the cohort as a whole. Because of this, I believe it is evident that patients still benefit from a system that encourages bystanders to provide aid prior to the arrival of EMS.”

Nevertheless, he noted, “despite the training of volunteers in applying an AED, overall, only a small percentage of patients in either group had placement and use of the device. While the reasons likely are multifactorial, it may be in part due to the significant stress and anxiety associated with OHCA.”

Additional research would be helpful, he said. “Future studies focusing on more rural areas with lower population density and limited availability of AEDs may be beneficial. Expanding the research outside of Europe to other countries would be useful. Next-phase trials looking at 30-day survival in these patients would also be important.”

Currently in the United States, research is underway to evaluate the use of smartphones to improve in-hospital cardiac arrests, he added, “but no nationwide programs are in place for OHCA.”

Similarly, Kevin G. Volpp, MD, PhD, and Benjamin S. Abella, MD, MPhil, both of the University of Pennsylvania, Philadelphia, wrote in a related editorial: “It is sobering to recognize that, in the U.S., it may be nearly impossible to even test an idea like this, given the lack of a supporting data infrastructure.”

Although there is an app in the United States to link OHCA events to bystander response, they noted, less than half of eligible 911 centers have linked to it.

“Furthermore, the bystander CPR rate in the U.S. is less than 35%, only about half of the Swedish rate, indicating far fewer people are trained in CPR and comfortable performing it in the U.S.,” they wrote. “A wealthy country like the U.S. should be able to develop a far more effective approach to preventing millions of ... families from having a loved one die of OHCA in the decade to come.”

The study was funded by unrestricted grant from the Swedish Heart-Lung Foundation and Stockholm County. The authors, editorialists, and Dr. Calandrella disclosed no relevant financial relationships.

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

Dispatching trained volunteer responders via smartphones to retrieve automated external defibrillators for patients in out-of-hospital cardiac arrest (OHCA) did not significantly increase bystander AED use in a randomized clinical trial in Sweden.

Most patients in OHCA can be saved if cardiopulmonary resuscitation and defibrillation are initiated within minutes, but despite the “substantial” public availability of AEDs and widespread CPR training among the Swedish public, use rates of both are low, Mattias Ringh, MD, PhD, of Karolinska Institutet in Stockholm, and colleagues wrote.

A previous study by the team showed that dispatching volunteer responders via a smartphone app significantly increased bystander CPR. The current study, called the Swedish AED and Mobile Bystander Activation (SAMBA) trial, aimed to see whether dispatching volunteer responders to collect a nearby AED would increase bystander AED use. A control group of volunteer responders was instructed to go straight to the scene and start CPR.

“The results showed that the volunteer responders were first to provide treatment with both CPR and AEDs in a large proportion of cases in both groups, thereby creating a ‘statistical’ dilutional effect,” Dr. Ringh said in an interview. In effect, the control arm also became an active arm.

“But if we agree that treatment with AEDs and CPR is saving lives, then dispatching volunteer responders is doing just that, although we could not fully measure the effect in our study,” he added.

The study was published online in JAMA Cardiology.
 

No significant differences

The SAMBA trial assessed outcomes of the smartphone dispatch system (Heartrunner), which is triggered at emergency dispatch centers in response to suspected OHCAs at the same time that an ambulance with advanced life support equipment is dispatched.

The volunteer responder system locates a maximum of 30 volunteer responders within a 1.3-km radius from the suspected out-of-hospital cardiac arrest, the researchers explained in their report. Volunteer responders are requested via their smartphone application to accept or decline the alert. If they accept an alert, the volunteer responders receive map-aided route directions to the location of the suspected arrest.

In patients allocated to intervention in this study, four of five of all volunteer responders who accepted the alert received instructions to collect the nearest available AED and then go directly to the patient with suspected out-of-hospital cardiac arrest, the authors noted. Route directions to the scene of the cardiac arrest and the AED were displayed on their smartphones. One of the 5 volunteer responders, closest to the arrest, was dispatched to go directly to initiate CPR.

In patients allocated to the control group, all volunteer responders who accepted the alert were instructed to go directly to the patient with suspected out-of-hospital cardiac arrest to perform CPR. No route directions to or locations of AEDs were displayed.

The study was conducted in Stockholm and in Västra Götaland from 2018 to 2020. At the start of the study, there were 3,123 AEDs and 24,493 volunteer responders in Stockholm and 3,195 AEDs and 19,117 volunteer responders in Västra Götaland.

Post-randomization exclusions included patients without OHCA, those with OHCAs not treated by emergency medical services, and those with OHCAs witnessed by EMS.

The primary outcome was overall bystander AED attachment before the arrival of EMS, including those attached by the volunteer responders but also by lay volunteers who did not use the smartphone app.

Volunteer responders were activated for 947 individuals with OHCA; 461 patients were randomized to the intervention group and 486 to the control group. In both groups, the patients’ median age was 73 and about 65% were men.

Attachment of the AED before the arrival of EMS or first responders occurred in 61 patients (13.2%) in the intervention group versus 46 (9.5%) in the control group (P = .08). However, the majority of all AEDs were attached by lay volunteers who were not volunteer responders using the smartphone app (37 in the intervention arm vs. 28 in the control arm), the researchers noted.

No significant differences were seen in secondary outcomes, which included bystander CPR (69% vs. 71.6%, respectively) and defibrillation before EMS arrival (3.7% vs. 3.9%) between groups.

Among the volunteer responders using the app, crossover was 11% and compliance to instructions was 31%. Overall, volunteer responders attached 38% of all bystander-attached AEDs and provided 45% of all bystander defibrillations and 43% of all bystander CPR.

Going forward, Dr. Ringh and colleagues will be further analyzing the results to understand how to better optimize the logistical challenges involved with smartphone dispatch to OHCA patients. “In the longer term, investigating the impact on survival is also warranted,” he concluded.
 

U.S. in worse shape

In a comment, Christopher Calandrella, DO, chair of emergency medicine at Long Island Jewish Forest Hills,, New York, part of Northwell Health, said: “Significant data are available to support the importance of prompt initiation of CPR and defibrillation for OHCA, and although this study did not demonstrate a meaningful increase in use of AEDs with the trial system, layperson CPR was initiated in approximately 70% of cases in the cohort as a whole. Because of this, I believe it is evident that patients still benefit from a system that encourages bystanders to provide aid prior to the arrival of EMS.”

Nevertheless, he noted, “despite the training of volunteers in applying an AED, overall, only a small percentage of patients in either group had placement and use of the device. While the reasons likely are multifactorial, it may be in part due to the significant stress and anxiety associated with OHCA.”

Additional research would be helpful, he said. “Future studies focusing on more rural areas with lower population density and limited availability of AEDs may be beneficial. Expanding the research outside of Europe to other countries would be useful. Next-phase trials looking at 30-day survival in these patients would also be important.”

Currently in the United States, research is underway to evaluate the use of smartphones to improve in-hospital cardiac arrests, he added, “but no nationwide programs are in place for OHCA.”

Similarly, Kevin G. Volpp, MD, PhD, and Benjamin S. Abella, MD, MPhil, both of the University of Pennsylvania, Philadelphia, wrote in a related editorial: “It is sobering to recognize that, in the U.S., it may be nearly impossible to even test an idea like this, given the lack of a supporting data infrastructure.”

Although there is an app in the United States to link OHCA events to bystander response, they noted, less than half of eligible 911 centers have linked to it.

“Furthermore, the bystander CPR rate in the U.S. is less than 35%, only about half of the Swedish rate, indicating far fewer people are trained in CPR and comfortable performing it in the U.S.,” they wrote. “A wealthy country like the U.S. should be able to develop a far more effective approach to preventing millions of ... families from having a loved one die of OHCA in the decade to come.”

The study was funded by unrestricted grant from the Swedish Heart-Lung Foundation and Stockholm County. The authors, editorialists, and Dr. Calandrella disclosed no relevant financial relationships.

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

Dispatching trained volunteer responders via smartphones to retrieve automated external defibrillators for patients in out-of-hospital cardiac arrest (OHCA) did not significantly increase bystander AED use in a randomized clinical trial in Sweden.

Most patients in OHCA can be saved if cardiopulmonary resuscitation and defibrillation are initiated within minutes, but despite the “substantial” public availability of AEDs and widespread CPR training among the Swedish public, use rates of both are low, Mattias Ringh, MD, PhD, of Karolinska Institutet in Stockholm, and colleagues wrote.

A previous study by the team showed that dispatching volunteer responders via a smartphone app significantly increased bystander CPR. The current study, called the Swedish AED and Mobile Bystander Activation (SAMBA) trial, aimed to see whether dispatching volunteer responders to collect a nearby AED would increase bystander AED use. A control group of volunteer responders was instructed to go straight to the scene and start CPR.

“The results showed that the volunteer responders were first to provide treatment with both CPR and AEDs in a large proportion of cases in both groups, thereby creating a ‘statistical’ dilutional effect,” Dr. Ringh said in an interview. In effect, the control arm also became an active arm.

“But if we agree that treatment with AEDs and CPR is saving lives, then dispatching volunteer responders is doing just that, although we could not fully measure the effect in our study,” he added.

The study was published online in JAMA Cardiology.
 

No significant differences

The SAMBA trial assessed outcomes of the smartphone dispatch system (Heartrunner), which is triggered at emergency dispatch centers in response to suspected OHCAs at the same time that an ambulance with advanced life support equipment is dispatched.

The volunteer responder system locates a maximum of 30 volunteer responders within a 1.3-km radius from the suspected out-of-hospital cardiac arrest, the researchers explained in their report. Volunteer responders are requested via their smartphone application to accept or decline the alert. If they accept an alert, the volunteer responders receive map-aided route directions to the location of the suspected arrest.

In patients allocated to intervention in this study, four of five of all volunteer responders who accepted the alert received instructions to collect the nearest available AED and then go directly to the patient with suspected out-of-hospital cardiac arrest, the authors noted. Route directions to the scene of the cardiac arrest and the AED were displayed on their smartphones. One of the 5 volunteer responders, closest to the arrest, was dispatched to go directly to initiate CPR.

In patients allocated to the control group, all volunteer responders who accepted the alert were instructed to go directly to the patient with suspected out-of-hospital cardiac arrest to perform CPR. No route directions to or locations of AEDs were displayed.

The study was conducted in Stockholm and in Västra Götaland from 2018 to 2020. At the start of the study, there were 3,123 AEDs and 24,493 volunteer responders in Stockholm and 3,195 AEDs and 19,117 volunteer responders in Västra Götaland.

Post-randomization exclusions included patients without OHCA, those with OHCAs not treated by emergency medical services, and those with OHCAs witnessed by EMS.

The primary outcome was overall bystander AED attachment before the arrival of EMS, including those attached by the volunteer responders but also by lay volunteers who did not use the smartphone app.

Volunteer responders were activated for 947 individuals with OHCA; 461 patients were randomized to the intervention group and 486 to the control group. In both groups, the patients’ median age was 73 and about 65% were men.

Attachment of the AED before the arrival of EMS or first responders occurred in 61 patients (13.2%) in the intervention group versus 46 (9.5%) in the control group (P = .08). However, the majority of all AEDs were attached by lay volunteers who were not volunteer responders using the smartphone app (37 in the intervention arm vs. 28 in the control arm), the researchers noted.

No significant differences were seen in secondary outcomes, which included bystander CPR (69% vs. 71.6%, respectively) and defibrillation before EMS arrival (3.7% vs. 3.9%) between groups.

Among the volunteer responders using the app, crossover was 11% and compliance to instructions was 31%. Overall, volunteer responders attached 38% of all bystander-attached AEDs and provided 45% of all bystander defibrillations and 43% of all bystander CPR.

Going forward, Dr. Ringh and colleagues will be further analyzing the results to understand how to better optimize the logistical challenges involved with smartphone dispatch to OHCA patients. “In the longer term, investigating the impact on survival is also warranted,” he concluded.
 

U.S. in worse shape

In a comment, Christopher Calandrella, DO, chair of emergency medicine at Long Island Jewish Forest Hills,, New York, part of Northwell Health, said: “Significant data are available to support the importance of prompt initiation of CPR and defibrillation for OHCA, and although this study did not demonstrate a meaningful increase in use of AEDs with the trial system, layperson CPR was initiated in approximately 70% of cases in the cohort as a whole. Because of this, I believe it is evident that patients still benefit from a system that encourages bystanders to provide aid prior to the arrival of EMS.”

Nevertheless, he noted, “despite the training of volunteers in applying an AED, overall, only a small percentage of patients in either group had placement and use of the device. While the reasons likely are multifactorial, it may be in part due to the significant stress and anxiety associated with OHCA.”

Additional research would be helpful, he said. “Future studies focusing on more rural areas with lower population density and limited availability of AEDs may be beneficial. Expanding the research outside of Europe to other countries would be useful. Next-phase trials looking at 30-day survival in these patients would also be important.”

Currently in the United States, research is underway to evaluate the use of smartphones to improve in-hospital cardiac arrests, he added, “but no nationwide programs are in place for OHCA.”

Similarly, Kevin G. Volpp, MD, PhD, and Benjamin S. Abella, MD, MPhil, both of the University of Pennsylvania, Philadelphia, wrote in a related editorial: “It is sobering to recognize that, in the U.S., it may be nearly impossible to even test an idea like this, given the lack of a supporting data infrastructure.”

Although there is an app in the United States to link OHCA events to bystander response, they noted, less than half of eligible 911 centers have linked to it.

“Furthermore, the bystander CPR rate in the U.S. is less than 35%, only about half of the Swedish rate, indicating far fewer people are trained in CPR and comfortable performing it in the U.S.,” they wrote. “A wealthy country like the U.S. should be able to develop a far more effective approach to preventing millions of ... families from having a loved one die of OHCA in the decade to come.”

The study was funded by unrestricted grant from the Swedish Heart-Lung Foundation and Stockholm County. The authors, editorialists, and Dr. Calandrella disclosed no relevant financial relationships.

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

Women with preexisting ischemic heart disease without another cardiac diagnosis have a higher risk of severe maternal morbidity and mortality than women with no cardiac disease, a new study suggests.

However, after adjustment for other comorbidities, the risk associated with isolated preexisting ischemic heart disease without additional evidence of cardiomyopathy was relatively similar to that of other low-risk cardiac diseases.

“These are reassuring findings,” lead author of the study, Anna E. Denoble, MD, Yale University, New Haven, Conn., told this news organization. “The risk is not zero. Women with preexisting ischemic heart disease are at a small increased risk compared to women without preexisting cardiac disease. But with good control of cardiovascular risk factors, these women have a good chance of a positive outcome.”

The study was published online in JACC: Advances.

“To our knowledge, this study provides the largest analysis to date examining the risk of severe morbidity and mortality among pregnant people with pre-existing ischemic heart disease,” the authors noted.

Dr. Denoble, a maternal and fetal medicine specialist, explained that in recent years, there has been an increase in the number of patients with preexisting ischemic heart disease who are considering pregnancy or who are pregnant when they present, but there is little information on outcomes for these patients.

The diagnosis of ischemic heart disease is not included in the main classification used for heart disease in pregnancy – the modified World Health Organization classification, Dr. Denoble noted. “This classification includes information on pregnancy outcomes in women with many cardiac conditions, including arrhythmias, congenital heart disease, heart failure, and aortic aneurysm, but ischemic heart disease is missing.”

She suggested this is probably because ischemic heart disease is regarded as a condition that occurs mainly in older people. “But we are seeing more and more women with ischemic heart disease who are pregnant or considering pregnancy. This could be because women are now often older when considering pregnancy, and also risk factors for ischemic heart disease, such as obesity and diabetes, are becoming more frequent in younger women.”

The researchers conducted the current study to investigate pregnancy outcomes for these women.

The retrospective cohort study analyzed data from the Nationwide Readmissions Database on women who had experienced a delivery hospitalization from Oct. 1, 2015, to Dec. 31, 2018. They compared outcomes for women with isolated preexisting ischemic heart disease with those of women who had no apparent cardiac condition and to those with mild or more severe cardiac conditions included in the mWHO classification after controlling for other comorbidities.

The primary outcome was severe maternal morbidity or death. Dr. Denoble explained that severe maternal morbidity includes mechanical ventilation, blood transfusion, and hysterectomy – the more severe maternal adverse outcomes of pregnancy.

Results showed that, of 11,556,136 delivery hospitalizations, 65,331 patients had another cardiac diagnosis, and 3,009 had ischemic heart disease alone. Patients with ischemic heart disease were older, and rates of diabetes and hypertension were higher.

In unadjusted analyses, adverse outcomes were more common among patients with ischemic heart disease alone than among patients with no cardiac disease and mild cardiac conditions (mWHO class I-II cardiac disease).

Of those with preexisting ischemic heart disease, 6.6% experienced severe maternal morbidity or death, compared with 1.5% of those without a cardiac disease (unadjusted relative risk vs. no cardiac disease, 4.3; 95% confidence interval, 3.5-5.2).

In comparison, 4.2% of women with mWHO I-II cardiac diseases and 23.1% of those with more severe mWHO II/III-IV cardiac diseases experienced severe maternal morbidity or death.

Similar differences were noted for nontransfusion severe maternal morbidity and mortality, as well as cardiac severe maternal morbidity and mortality.

After adjustment, ischemic heart disease alone was associated with a higher risk of severe maternal morbidity or death compared to no cardiac disease (adjusted RR, 1.51; 95% CI, 1.19-1.92).

In comparison, the aRR was 1.90 for WHO class I-II diseases and 5.87 (95% CI, 5.49-6.27) for more severe cardiac conditions defined as WHO II/III-IV diseases.

Risk for nontransfusion severe maternal morbidity or death (aRR, 1.60) and cardiac severe maternal morbidity or death (aRR, 2.98) were also higher for those with ischemic heart disease than for women without any cardiac disease.

There were no significant differences in preterm birth for those with preexisting ischemic heart disease compared to those with no cardiac disease after adjustment.

The risk of severe maternal morbidity and mortality, nontransfusion severe maternal morbidity and mortality, and cardiac severe maternal morbidity and mortality for ischemic heart disease alone most closely approximated that of mWHO class I or II cardiac diseases, the researchers said.

“We found that individuals with preexisting ischemic heart disease had a rate of severe maternal morbidity/mortality in the same range as those with other cardiac diagnoses in the mild cardiac disease classification (class I or II),” Dr. Denoble commented.

“This prognosis suggests it is very reasonable for these women to consider pregnancy. The risk of adverse outcomes is not so high that pregnancy is contraindicated,” she added.

Dr. Denoble said this information will be very helpful when counseling women with preexisting ischemic heart disease who are considering pregnancy. “These patients may need some extra monitoring, but in general, they have a high chance of a good outcome,” she noted.

“I would still advise these women to register with a high-risk obstetrics provider to have a baseline cardiovascular pregnancy evaluation. As long as that is reassuring, then further frequent intensive supervision may not be necessary,” she said.

However, the authors pointed out, “it is important to communicate to patients that while pregnancy may be considered low risk in the setting of pre-existing ischemic heart disease, 6.6% of patients with pre-existing ischemic heart disease alone did experience severe maternal morbidity or death during the delivery hospitalization.”

They added that other medical comorbidities should be factored into discussions regarding the risks of pregnancy.

The researchers also noted that the study was limited to evaluation of maternal outcomes occurring during the delivery hospitalization and that additional research that assesses rates of maternal adverse cardiac events and maternal morbidity occurring prior to or after the delivery hospitalization would be beneficial.

Future studies examining the potential gradation in risk associated with additional cardiac comorbidities in individuals with preexisting ischemic heart disease would also be worthwhile, they added.

The study was supported by funding from the National Institutes of Health and the Foundation for Women and Girls with Blood Disorders. The authors disclosed no relevant financial relationships.

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

Women with preexisting ischemic heart disease without another cardiac diagnosis have a higher risk of severe maternal morbidity and mortality than women with no cardiac disease, a new study suggests.

However, after adjustment for other comorbidities, the risk associated with isolated preexisting ischemic heart disease without additional evidence of cardiomyopathy was relatively similar to that of other low-risk cardiac diseases.

“These are reassuring findings,” lead author of the study, Anna E. Denoble, MD, Yale University, New Haven, Conn., told this news organization. “The risk is not zero. Women with preexisting ischemic heart disease are at a small increased risk compared to women without preexisting cardiac disease. But with good control of cardiovascular risk factors, these women have a good chance of a positive outcome.”

The study was published online in JACC: Advances.

“To our knowledge, this study provides the largest analysis to date examining the risk of severe morbidity and mortality among pregnant people with pre-existing ischemic heart disease,” the authors noted.

Dr. Denoble, a maternal and fetal medicine specialist, explained that in recent years, there has been an increase in the number of patients with preexisting ischemic heart disease who are considering pregnancy or who are pregnant when they present, but there is little information on outcomes for these patients.

The diagnosis of ischemic heart disease is not included in the main classification used for heart disease in pregnancy – the modified World Health Organization classification, Dr. Denoble noted. “This classification includes information on pregnancy outcomes in women with many cardiac conditions, including arrhythmias, congenital heart disease, heart failure, and aortic aneurysm, but ischemic heart disease is missing.”

She suggested this is probably because ischemic heart disease is regarded as a condition that occurs mainly in older people. “But we are seeing more and more women with ischemic heart disease who are pregnant or considering pregnancy. This could be because women are now often older when considering pregnancy, and also risk factors for ischemic heart disease, such as obesity and diabetes, are becoming more frequent in younger women.”

The researchers conducted the current study to investigate pregnancy outcomes for these women.

The retrospective cohort study analyzed data from the Nationwide Readmissions Database on women who had experienced a delivery hospitalization from Oct. 1, 2015, to Dec. 31, 2018. They compared outcomes for women with isolated preexisting ischemic heart disease with those of women who had no apparent cardiac condition and to those with mild or more severe cardiac conditions included in the mWHO classification after controlling for other comorbidities.

The primary outcome was severe maternal morbidity or death. Dr. Denoble explained that severe maternal morbidity includes mechanical ventilation, blood transfusion, and hysterectomy – the more severe maternal adverse outcomes of pregnancy.

Results showed that, of 11,556,136 delivery hospitalizations, 65,331 patients had another cardiac diagnosis, and 3,009 had ischemic heart disease alone. Patients with ischemic heart disease were older, and rates of diabetes and hypertension were higher.

In unadjusted analyses, adverse outcomes were more common among patients with ischemic heart disease alone than among patients with no cardiac disease and mild cardiac conditions (mWHO class I-II cardiac disease).

Of those with preexisting ischemic heart disease, 6.6% experienced severe maternal morbidity or death, compared with 1.5% of those without a cardiac disease (unadjusted relative risk vs. no cardiac disease, 4.3; 95% confidence interval, 3.5-5.2).

In comparison, 4.2% of women with mWHO I-II cardiac diseases and 23.1% of those with more severe mWHO II/III-IV cardiac diseases experienced severe maternal morbidity or death.

Similar differences were noted for nontransfusion severe maternal morbidity and mortality, as well as cardiac severe maternal morbidity and mortality.

After adjustment, ischemic heart disease alone was associated with a higher risk of severe maternal morbidity or death compared to no cardiac disease (adjusted RR, 1.51; 95% CI, 1.19-1.92).

In comparison, the aRR was 1.90 for WHO class I-II diseases and 5.87 (95% CI, 5.49-6.27) for more severe cardiac conditions defined as WHO II/III-IV diseases.

Risk for nontransfusion severe maternal morbidity or death (aRR, 1.60) and cardiac severe maternal morbidity or death (aRR, 2.98) were also higher for those with ischemic heart disease than for women without any cardiac disease.

There were no significant differences in preterm birth for those with preexisting ischemic heart disease compared to those with no cardiac disease after adjustment.

The risk of severe maternal morbidity and mortality, nontransfusion severe maternal morbidity and mortality, and cardiac severe maternal morbidity and mortality for ischemic heart disease alone most closely approximated that of mWHO class I or II cardiac diseases, the researchers said.

“We found that individuals with preexisting ischemic heart disease had a rate of severe maternal morbidity/mortality in the same range as those with other cardiac diagnoses in the mild cardiac disease classification (class I or II),” Dr. Denoble commented.

“This prognosis suggests it is very reasonable for these women to consider pregnancy. The risk of adverse outcomes is not so high that pregnancy is contraindicated,” she added.

Dr. Denoble said this information will be very helpful when counseling women with preexisting ischemic heart disease who are considering pregnancy. “These patients may need some extra monitoring, but in general, they have a high chance of a good outcome,” she noted.

“I would still advise these women to register with a high-risk obstetrics provider to have a baseline cardiovascular pregnancy evaluation. As long as that is reassuring, then further frequent intensive supervision may not be necessary,” she said.

However, the authors pointed out, “it is important to communicate to patients that while pregnancy may be considered low risk in the setting of pre-existing ischemic heart disease, 6.6% of patients with pre-existing ischemic heart disease alone did experience severe maternal morbidity or death during the delivery hospitalization.”

They added that other medical comorbidities should be factored into discussions regarding the risks of pregnancy.

The researchers also noted that the study was limited to evaluation of maternal outcomes occurring during the delivery hospitalization and that additional research that assesses rates of maternal adverse cardiac events and maternal morbidity occurring prior to or after the delivery hospitalization would be beneficial.

Future studies examining the potential gradation in risk associated with additional cardiac comorbidities in individuals with preexisting ischemic heart disease would also be worthwhile, they added.

The study was supported by funding from the National Institutes of Health and the Foundation for Women and Girls with Blood Disorders. The authors disclosed no relevant financial relationships.

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

Women with preexisting ischemic heart disease without another cardiac diagnosis have a higher risk of severe maternal morbidity and mortality than women with no cardiac disease, a new study suggests.

However, after adjustment for other comorbidities, the risk associated with isolated preexisting ischemic heart disease without additional evidence of cardiomyopathy was relatively similar to that of other low-risk cardiac diseases.

“These are reassuring findings,” lead author of the study, Anna E. Denoble, MD, Yale University, New Haven, Conn., told this news organization. “The risk is not zero. Women with preexisting ischemic heart disease are at a small increased risk compared to women without preexisting cardiac disease. But with good control of cardiovascular risk factors, these women have a good chance of a positive outcome.”

The study was published online in JACC: Advances.

“To our knowledge, this study provides the largest analysis to date examining the risk of severe morbidity and mortality among pregnant people with pre-existing ischemic heart disease,” the authors noted.

Dr. Denoble, a maternal and fetal medicine specialist, explained that in recent years, there has been an increase in the number of patients with preexisting ischemic heart disease who are considering pregnancy or who are pregnant when they present, but there is little information on outcomes for these patients.

The diagnosis of ischemic heart disease is not included in the main classification used for heart disease in pregnancy – the modified World Health Organization classification, Dr. Denoble noted. “This classification includes information on pregnancy outcomes in women with many cardiac conditions, including arrhythmias, congenital heart disease, heart failure, and aortic aneurysm, but ischemic heart disease is missing.”

She suggested this is probably because ischemic heart disease is regarded as a condition that occurs mainly in older people. “But we are seeing more and more women with ischemic heart disease who are pregnant or considering pregnancy. This could be because women are now often older when considering pregnancy, and also risk factors for ischemic heart disease, such as obesity and diabetes, are becoming more frequent in younger women.”

The researchers conducted the current study to investigate pregnancy outcomes for these women.

The retrospective cohort study analyzed data from the Nationwide Readmissions Database on women who had experienced a delivery hospitalization from Oct. 1, 2015, to Dec. 31, 2018. They compared outcomes for women with isolated preexisting ischemic heart disease with those of women who had no apparent cardiac condition and to those with mild or more severe cardiac conditions included in the mWHO classification after controlling for other comorbidities.

The primary outcome was severe maternal morbidity or death. Dr. Denoble explained that severe maternal morbidity includes mechanical ventilation, blood transfusion, and hysterectomy – the more severe maternal adverse outcomes of pregnancy.

Results showed that, of 11,556,136 delivery hospitalizations, 65,331 patients had another cardiac diagnosis, and 3,009 had ischemic heart disease alone. Patients with ischemic heart disease were older, and rates of diabetes and hypertension were higher.

In unadjusted analyses, adverse outcomes were more common among patients with ischemic heart disease alone than among patients with no cardiac disease and mild cardiac conditions (mWHO class I-II cardiac disease).

Of those with preexisting ischemic heart disease, 6.6% experienced severe maternal morbidity or death, compared with 1.5% of those without a cardiac disease (unadjusted relative risk vs. no cardiac disease, 4.3; 95% confidence interval, 3.5-5.2).

In comparison, 4.2% of women with mWHO I-II cardiac diseases and 23.1% of those with more severe mWHO II/III-IV cardiac diseases experienced severe maternal morbidity or death.

Similar differences were noted for nontransfusion severe maternal morbidity and mortality, as well as cardiac severe maternal morbidity and mortality.

After adjustment, ischemic heart disease alone was associated with a higher risk of severe maternal morbidity or death compared to no cardiac disease (adjusted RR, 1.51; 95% CI, 1.19-1.92).

In comparison, the aRR was 1.90 for WHO class I-II diseases and 5.87 (95% CI, 5.49-6.27) for more severe cardiac conditions defined as WHO II/III-IV diseases.

Risk for nontransfusion severe maternal morbidity or death (aRR, 1.60) and cardiac severe maternal morbidity or death (aRR, 2.98) were also higher for those with ischemic heart disease than for women without any cardiac disease.

There were no significant differences in preterm birth for those with preexisting ischemic heart disease compared to those with no cardiac disease after adjustment.

The risk of severe maternal morbidity and mortality, nontransfusion severe maternal morbidity and mortality, and cardiac severe maternal morbidity and mortality for ischemic heart disease alone most closely approximated that of mWHO class I or II cardiac diseases, the researchers said.

“We found that individuals with preexisting ischemic heart disease had a rate of severe maternal morbidity/mortality in the same range as those with other cardiac diagnoses in the mild cardiac disease classification (class I or II),” Dr. Denoble commented.

“This prognosis suggests it is very reasonable for these women to consider pregnancy. The risk of adverse outcomes is not so high that pregnancy is contraindicated,” she added.

Dr. Denoble said this information will be very helpful when counseling women with preexisting ischemic heart disease who are considering pregnancy. “These patients may need some extra monitoring, but in general, they have a high chance of a good outcome,” she noted.

“I would still advise these women to register with a high-risk obstetrics provider to have a baseline cardiovascular pregnancy evaluation. As long as that is reassuring, then further frequent intensive supervision may not be necessary,” she said.

However, the authors pointed out, “it is important to communicate to patients that while pregnancy may be considered low risk in the setting of pre-existing ischemic heart disease, 6.6% of patients with pre-existing ischemic heart disease alone did experience severe maternal morbidity or death during the delivery hospitalization.”

They added that other medical comorbidities should be factored into discussions regarding the risks of pregnancy.

The researchers also noted that the study was limited to evaluation of maternal outcomes occurring during the delivery hospitalization and that additional research that assesses rates of maternal adverse cardiac events and maternal morbidity occurring prior to or after the delivery hospitalization would be beneficial.

Future studies examining the potential gradation in risk associated with additional cardiac comorbidities in individuals with preexisting ischemic heart disease would also be worthwhile, they added.

The study was supported by funding from the National Institutes of Health and the Foundation for Women and Girls with Blood Disorders. The authors disclosed no relevant financial relationships.

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

A new strategy for the management of atherosclerotic plaque as a source of major adverse cardiac events is needed with the focus shifting from the flow-limiting coronary artery luminal lesions to the overall atherosclerotic burden, be it obstructive or nonobstructive, according to a review article.

The article, by Peter H. Stone, MD, and Peter Libby, MD, Brigham and Women’s Hospital, Boston, and William E. Boden, MD, Boston University School of Medicine, was published online in JAMA Cardiology.  

The review explored new data from vascular biology, atherosclerosis imaging, natural history outcome studies, and large-scale clinical trials that support what the authors refer to as “The Plaque Hypothesis” – the idea that major adverse cardiac events such as myocardial infarction and cardiac death are triggered by destabilization of vulnerable plaque, which may be obstructive or nonobstructive.

“We need to consider embracing a new management strategy that directs our diagnostic and management focus to evaluate the entire length of the atheromatous coronary artery and broaden the target of our therapeutic intervention to include all regions of the plaque (both flow-limiting and non–flow-limiting), even those that are distant from the presumed ischemia-producing obstruction,” the authors concluded.

Dr. Stone explained to this news organization that, for several decades, the medical community has focused on plaques causing severe obstruction of coronary arteries as being responsible for major adverse cardiac events. This approach – known as the Ischemia Hypothesis – has been the accepted strategy for many years, with all guidelines advising the identification of the stenoses that cause the most obstruction for treatment with stenting.

However, the authors pointed out that a number of studies have now suggested that, while these severe obstructive stenoses cause angina, they do not seem to be responsible for the hard events of MI, acute coronary syndrome (ACS), and cardiac death. 

Several studies including the COURAGE trial and BARI-2D, and the recent ISCHEMIA trial have all failed to show a reduction in these hard endpoints by intervening on these severe obstructive lesions, Dr. Stone noted. 

“We present evidence for a new approach – that it is the composition and vascular biology of the atherosclerotic plaques that cause MI, ACS, and cardiac death, rather than simply how obstructive they are,” he said.  

Dr. Stone pointed out that plaque seen on a coronary angiogram looks at only the lumen of the artery, but plaque is primarily based in the wall of the artery, and if that plaque is inflamed it can easily be the culprit responsible for adverse events even without encroaching into the lumen.

“Our paper describes many factors which can cause plaques to destabilize and cause an ACS. These include anatomical, biochemical, and biomechanical features that together cause plaque rupture or erosion and precipitate a clinical event. It is not sufficient to just look for obstructive plaques on a coronary angiogram,” he said. “We are barking up the wrong tree. We need to look for inflamed plaque in the whole wall of the coronary arteries.”

The authors described different factors that identify a plaque at high risk of destabilization. These include a large area of vulnerable plaque, a thin-cap atheroma, a severe inflamed core, macrocalcifications, a large plaque burden, and a physical profile that would encourage a thrombus to become trapped.  

“Atherosclerotic plaques are very heterogeneous and complex structures and it is not just the mountain peaks but also the lower foothills that can precipitate a flow-limiting obstruction,” Dr. Stone noted. 

“The slope of the mountain is probably very important in the ability for a thrombus to form. If the slope is gradual there isn’t a problem. But if the slope is jagged with sharp edges this can cause a thrombus to become trapped. We need to look at the entirety of plaque and all its risk features to identify the culprit areas that could cause MI or cardiac death. These are typically not the obstructive plaques we have all been fixated on for many years,” he added. 

“We need to focus on plaque heterogeneity. Once plaque is old and just made up of scar tissue which is not inflamed it does not cause much [of] a problem – we can probably just leave it alone. Some of these obstructive plaques may cause some angina but many do not cause major cardiac events unless they have other high-risk features,” he said. 

“Cardiac events are still caused by obstruction of blood flow but that can be an abrupt process where a thrombus attaches itself to an area of destabilized plaque. These areas of plaque were not necessarily obstructing to start with. We believe that this is the explanation behind the observation that 50% of all people who have an MI (half of which are fatal) do not have symptoms beforehand,” Dr. Stone commented. 

Because these areas of destabilized plaque do not cause symptoms, he believes that vast populations of people with established cardiovascular risk factors should undergo screening. “At the moment we wait for people to experience chest pain or to have an MI – that is far too little too late.” 

To identify these areas of high-risk plaques, imaging techniques looking inside the artery wall are needed such as intravascular ultrasound. However, this is an invasive procedure, and the noninvasive coronary CT angiography also gives a good picture, so it is probably the best way to begin as a wider screening modality, with more invasive screening methods then used in those found to be at risk, Dr. Stone suggested.  

Plaques that are identified as likely to destabilize can be treated with percutaneous coronary intervention and stenting.  

While systemic therapies are useful, those currently available are not sufficient, Dr. Stone noted. For example, there are still high levels of major cardiac events in patients treated with the PCSK9 inhibitors, which bring about very large reductions in LDL cholesterol. “These therapies are beneficial, but they are not enough on their own. So, these areas of unstable plaque would need to be treated with stenting or something similar. We believe that the intervention of stenting is good but at present it is targeted at the wrong areas,” he stated.  

“Clearly what we’ve been doing – stenting only obstructive lesions – does not reduce hard clinical events. Imaging methods have improved so much in recent years that we can now identify high-risk areas of plaque. This whole field of studying the vulnerable plaque has been ongoing for many years, but it is only recently that imaging methods have become good enough to identify plaques at risk. This field is now coming of age,” he added.

The next steps are to start identifying these plaques in larger populations, more accurately characterizing those at the highest risk, and then performing randomized trials of preemptive intervention in those believed to be at highest risk, and follow up for clinical events, Dr. Stone explained.  

Advances in detecting unstable plaque may also permit early evaluation of novel therapeutics and gauge the intensity of lifestyle and disease-modifying pharmacotherapy, the authors suggested.

This work was supported in part by the National Heart, Lung, and Blood Institute, the American Heart Association, the RRM Charitable Fund, the Simard Fund, and the Schaubert Family. Dr. Libby is an unpaid consultant to or involved in clinical trials with Amgen, AstraZeneca, Baim Institute, Beren Therapeutics, Esperion Therapeutics, Genentech, Kancera, Kowa Pharmaceuticals, MedImmune, Merck, Norvo Nordisk, Novartis, Pfizer, and Sanofi-Regeneron; and is a member of the scientific advisory board for Amgen, Caristo Diagnostics, Cartesian Therapeutics, CSL Behring, DalCor Pharmaceuticals, Dewpoint Therapeutics, Elucid Bioimaging, Kancera, Kowa Pharmaceuticals, Olatec Therapeutics, MedImmune, Moderna, Novartis, PlaqueTec, TenSixteen Bio, Soley Thereapeutics, and XBiotech.

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

A new strategy for the management of atherosclerotic plaque as a source of major adverse cardiac events is needed with the focus shifting from the flow-limiting coronary artery luminal lesions to the overall atherosclerotic burden, be it obstructive or nonobstructive, according to a review article.

The article, by Peter H. Stone, MD, and Peter Libby, MD, Brigham and Women’s Hospital, Boston, and William E. Boden, MD, Boston University School of Medicine, was published online in JAMA Cardiology.  

The review explored new data from vascular biology, atherosclerosis imaging, natural history outcome studies, and large-scale clinical trials that support what the authors refer to as “The Plaque Hypothesis” – the idea that major adverse cardiac events such as myocardial infarction and cardiac death are triggered by destabilization of vulnerable plaque, which may be obstructive or nonobstructive.

“We need to consider embracing a new management strategy that directs our diagnostic and management focus to evaluate the entire length of the atheromatous coronary artery and broaden the target of our therapeutic intervention to include all regions of the plaque (both flow-limiting and non–flow-limiting), even those that are distant from the presumed ischemia-producing obstruction,” the authors concluded.

Dr. Stone explained to this news organization that, for several decades, the medical community has focused on plaques causing severe obstruction of coronary arteries as being responsible for major adverse cardiac events. This approach – known as the Ischemia Hypothesis – has been the accepted strategy for many years, with all guidelines advising the identification of the stenoses that cause the most obstruction for treatment with stenting.

However, the authors pointed out that a number of studies have now suggested that, while these severe obstructive stenoses cause angina, they do not seem to be responsible for the hard events of MI, acute coronary syndrome (ACS), and cardiac death. 

Several studies including the COURAGE trial and BARI-2D, and the recent ISCHEMIA trial have all failed to show a reduction in these hard endpoints by intervening on these severe obstructive lesions, Dr. Stone noted. 

“We present evidence for a new approach – that it is the composition and vascular biology of the atherosclerotic plaques that cause MI, ACS, and cardiac death, rather than simply how obstructive they are,” he said.  

Dr. Stone pointed out that plaque seen on a coronary angiogram looks at only the lumen of the artery, but plaque is primarily based in the wall of the artery, and if that plaque is inflamed it can easily be the culprit responsible for adverse events even without encroaching into the lumen.

“Our paper describes many factors which can cause plaques to destabilize and cause an ACS. These include anatomical, biochemical, and biomechanical features that together cause plaque rupture or erosion and precipitate a clinical event. It is not sufficient to just look for obstructive plaques on a coronary angiogram,” he said. “We are barking up the wrong tree. We need to look for inflamed plaque in the whole wall of the coronary arteries.”

The authors described different factors that identify a plaque at high risk of destabilization. These include a large area of vulnerable plaque, a thin-cap atheroma, a severe inflamed core, macrocalcifications, a large plaque burden, and a physical profile that would encourage a thrombus to become trapped.  

“Atherosclerotic plaques are very heterogeneous and complex structures and it is not just the mountain peaks but also the lower foothills that can precipitate a flow-limiting obstruction,” Dr. Stone noted. 

“The slope of the mountain is probably very important in the ability for a thrombus to form. If the slope is gradual there isn’t a problem. But if the slope is jagged with sharp edges this can cause a thrombus to become trapped. We need to look at the entirety of plaque and all its risk features to identify the culprit areas that could cause MI or cardiac death. These are typically not the obstructive plaques we have all been fixated on for many years,” he added. 

“We need to focus on plaque heterogeneity. Once plaque is old and just made up of scar tissue which is not inflamed it does not cause much [of] a problem – we can probably just leave it alone. Some of these obstructive plaques may cause some angina but many do not cause major cardiac events unless they have other high-risk features,” he said. 

“Cardiac events are still caused by obstruction of blood flow but that can be an abrupt process where a thrombus attaches itself to an area of destabilized plaque. These areas of plaque were not necessarily obstructing to start with. We believe that this is the explanation behind the observation that 50% of all people who have an MI (half of which are fatal) do not have symptoms beforehand,” Dr. Stone commented. 

Because these areas of destabilized plaque do not cause symptoms, he believes that vast populations of people with established cardiovascular risk factors should undergo screening. “At the moment we wait for people to experience chest pain or to have an MI – that is far too little too late.” 

To identify these areas of high-risk plaques, imaging techniques looking inside the artery wall are needed such as intravascular ultrasound. However, this is an invasive procedure, and the noninvasive coronary CT angiography also gives a good picture, so it is probably the best way to begin as a wider screening modality, with more invasive screening methods then used in those found to be at risk, Dr. Stone suggested.  

Plaques that are identified as likely to destabilize can be treated with percutaneous coronary intervention and stenting.  

While systemic therapies are useful, those currently available are not sufficient, Dr. Stone noted. For example, there are still high levels of major cardiac events in patients treated with the PCSK9 inhibitors, which bring about very large reductions in LDL cholesterol. “These therapies are beneficial, but they are not enough on their own. So, these areas of unstable plaque would need to be treated with stenting or something similar. We believe that the intervention of stenting is good but at present it is targeted at the wrong areas,” he stated.  

“Clearly what we’ve been doing – stenting only obstructive lesions – does not reduce hard clinical events. Imaging methods have improved so much in recent years that we can now identify high-risk areas of plaque. This whole field of studying the vulnerable plaque has been ongoing for many years, but it is only recently that imaging methods have become good enough to identify plaques at risk. This field is now coming of age,” he added.

The next steps are to start identifying these plaques in larger populations, more accurately characterizing those at the highest risk, and then performing randomized trials of preemptive intervention in those believed to be at highest risk, and follow up for clinical events, Dr. Stone explained.  

Advances in detecting unstable plaque may also permit early evaluation of novel therapeutics and gauge the intensity of lifestyle and disease-modifying pharmacotherapy, the authors suggested.

This work was supported in part by the National Heart, Lung, and Blood Institute, the American Heart Association, the RRM Charitable Fund, the Simard Fund, and the Schaubert Family. Dr. Libby is an unpaid consultant to or involved in clinical trials with Amgen, AstraZeneca, Baim Institute, Beren Therapeutics, Esperion Therapeutics, Genentech, Kancera, Kowa Pharmaceuticals, MedImmune, Merck, Norvo Nordisk, Novartis, Pfizer, and Sanofi-Regeneron; and is a member of the scientific advisory board for Amgen, Caristo Diagnostics, Cartesian Therapeutics, CSL Behring, DalCor Pharmaceuticals, Dewpoint Therapeutics, Elucid Bioimaging, Kancera, Kowa Pharmaceuticals, Olatec Therapeutics, MedImmune, Moderna, Novartis, PlaqueTec, TenSixteen Bio, Soley Thereapeutics, and XBiotech.

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

A new strategy for the management of atherosclerotic plaque as a source of major adverse cardiac events is needed with the focus shifting from the flow-limiting coronary artery luminal lesions to the overall atherosclerotic burden, be it obstructive or nonobstructive, according to a review article.

The article, by Peter H. Stone, MD, and Peter Libby, MD, Brigham and Women’s Hospital, Boston, and William E. Boden, MD, Boston University School of Medicine, was published online in JAMA Cardiology.  

The review explored new data from vascular biology, atherosclerosis imaging, natural history outcome studies, and large-scale clinical trials that support what the authors refer to as “The Plaque Hypothesis” – the idea that major adverse cardiac events such as myocardial infarction and cardiac death are triggered by destabilization of vulnerable plaque, which may be obstructive or nonobstructive.

“We need to consider embracing a new management strategy that directs our diagnostic and management focus to evaluate the entire length of the atheromatous coronary artery and broaden the target of our therapeutic intervention to include all regions of the plaque (both flow-limiting and non–flow-limiting), even those that are distant from the presumed ischemia-producing obstruction,” the authors concluded.

Dr. Stone explained to this news organization that, for several decades, the medical community has focused on plaques causing severe obstruction of coronary arteries as being responsible for major adverse cardiac events. This approach – known as the Ischemia Hypothesis – has been the accepted strategy for many years, with all guidelines advising the identification of the stenoses that cause the most obstruction for treatment with stenting.

However, the authors pointed out that a number of studies have now suggested that, while these severe obstructive stenoses cause angina, they do not seem to be responsible for the hard events of MI, acute coronary syndrome (ACS), and cardiac death. 

Several studies including the COURAGE trial and BARI-2D, and the recent ISCHEMIA trial have all failed to show a reduction in these hard endpoints by intervening on these severe obstructive lesions, Dr. Stone noted. 

“We present evidence for a new approach – that it is the composition and vascular biology of the atherosclerotic plaques that cause MI, ACS, and cardiac death, rather than simply how obstructive they are,” he said.  

Dr. Stone pointed out that plaque seen on a coronary angiogram looks at only the lumen of the artery, but plaque is primarily based in the wall of the artery, and if that plaque is inflamed it can easily be the culprit responsible for adverse events even without encroaching into the lumen.

“Our paper describes many factors which can cause plaques to destabilize and cause an ACS. These include anatomical, biochemical, and biomechanical features that together cause plaque rupture or erosion and precipitate a clinical event. It is not sufficient to just look for obstructive plaques on a coronary angiogram,” he said. “We are barking up the wrong tree. We need to look for inflamed plaque in the whole wall of the coronary arteries.”

The authors described different factors that identify a plaque at high risk of destabilization. These include a large area of vulnerable plaque, a thin-cap atheroma, a severe inflamed core, macrocalcifications, a large plaque burden, and a physical profile that would encourage a thrombus to become trapped.  

“Atherosclerotic plaques are very heterogeneous and complex structures and it is not just the mountain peaks but also the lower foothills that can precipitate a flow-limiting obstruction,” Dr. Stone noted. 

“The slope of the mountain is probably very important in the ability for a thrombus to form. If the slope is gradual there isn’t a problem. But if the slope is jagged with sharp edges this can cause a thrombus to become trapped. We need to look at the entirety of plaque and all its risk features to identify the culprit areas that could cause MI or cardiac death. These are typically not the obstructive plaques we have all been fixated on for many years,” he added. 

“We need to focus on plaque heterogeneity. Once plaque is old and just made up of scar tissue which is not inflamed it does not cause much [of] a problem – we can probably just leave it alone. Some of these obstructive plaques may cause some angina but many do not cause major cardiac events unless they have other high-risk features,” he said. 

“Cardiac events are still caused by obstruction of blood flow but that can be an abrupt process where a thrombus attaches itself to an area of destabilized plaque. These areas of plaque were not necessarily obstructing to start with. We believe that this is the explanation behind the observation that 50% of all people who have an MI (half of which are fatal) do not have symptoms beforehand,” Dr. Stone commented. 

Because these areas of destabilized plaque do not cause symptoms, he believes that vast populations of people with established cardiovascular risk factors should undergo screening. “At the moment we wait for people to experience chest pain or to have an MI – that is far too little too late.” 

To identify these areas of high-risk plaques, imaging techniques looking inside the artery wall are needed such as intravascular ultrasound. However, this is an invasive procedure, and the noninvasive coronary CT angiography also gives a good picture, so it is probably the best way to begin as a wider screening modality, with more invasive screening methods then used in those found to be at risk, Dr. Stone suggested.  

Plaques that are identified as likely to destabilize can be treated with percutaneous coronary intervention and stenting.  

While systemic therapies are useful, those currently available are not sufficient, Dr. Stone noted. For example, there are still high levels of major cardiac events in patients treated with the PCSK9 inhibitors, which bring about very large reductions in LDL cholesterol. “These therapies are beneficial, but they are not enough on their own. So, these areas of unstable plaque would need to be treated with stenting or something similar. We believe that the intervention of stenting is good but at present it is targeted at the wrong areas,” he stated.  

“Clearly what we’ve been doing – stenting only obstructive lesions – does not reduce hard clinical events. Imaging methods have improved so much in recent years that we can now identify high-risk areas of plaque. This whole field of studying the vulnerable plaque has been ongoing for many years, but it is only recently that imaging methods have become good enough to identify plaques at risk. This field is now coming of age,” he added.

The next steps are to start identifying these plaques in larger populations, more accurately characterizing those at the highest risk, and then performing randomized trials of preemptive intervention in those believed to be at highest risk, and follow up for clinical events, Dr. Stone explained.  

Advances in detecting unstable plaque may also permit early evaluation of novel therapeutics and gauge the intensity of lifestyle and disease-modifying pharmacotherapy, the authors suggested.

This work was supported in part by the National Heart, Lung, and Blood Institute, the American Heart Association, the RRM Charitable Fund, the Simard Fund, and the Schaubert Family. Dr. Libby is an unpaid consultant to or involved in clinical trials with Amgen, AstraZeneca, Baim Institute, Beren Therapeutics, Esperion Therapeutics, Genentech, Kancera, Kowa Pharmaceuticals, MedImmune, Merck, Norvo Nordisk, Novartis, Pfizer, and Sanofi-Regeneron; and is a member of the scientific advisory board for Amgen, Caristo Diagnostics, Cartesian Therapeutics, CSL Behring, DalCor Pharmaceuticals, Dewpoint Therapeutics, Elucid Bioimaging, Kancera, Kowa Pharmaceuticals, Olatec Therapeutics, MedImmune, Moderna, Novartis, PlaqueTec, TenSixteen Bio, Soley Thereapeutics, and XBiotech.

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

Age-related changes in general and cardiovascular health likely require modifications in how acute coronary syndrome (ACS) is diagnosed and managed in adults aged 75 and older, the American Heart Association says in a new scientific statement.

The statement outlines a framework to integrate geriatric risks into the management of ACS, including the diagnostic approach, pharmacotherapy, revascularization strategies, prevention of adverse events, and transition care planning.

The 31-page statement was published online in the AHA journal Circulation (2022 Dec 12. doi: 10.1161/CIR.0000000000001112). It updates a 2007 AHA statement on treatment of ACS in the elderly.
 

Complex patient group

Adults aged 75 and older make up roughly 30%-40% of all hospitalized patients with ACS and the majority of ACS-related deaths occur in this group, the writing group notes.

“Older patients have more pronounced anatomical changes and more severe functional impairment, and they are more likely to have additional health conditions,” writing group chair Abdulla A. Damluji, MD, PhD, director of the Inova Center of Outcomes Research in Fairfax, Va., notes in a news release.

“These include frailty, other chronic disorders (treated with multiple medications), physical dysfunction, cognitive decline and/or urinary incontinence – and these are not regularly studied in the context of ACS,” Dr. Damluji explained.

The writing group notes that the presence of one or more geriatric syndromes may substantially affect ACS clinical presentation, clinical course and prognosis, therapeutic decision-making, and response to treatment.

“It is therefore fundamental that clinicians caring for older patients with ACS be alert to the presence of geriatric syndromes and be able to integrate them into the care plan when appropriate,” they say.

They recommend a holistic, individualized, and patient-centered approach to ACS care in the elderly, taking into consideration coexisting and overlapping health issues.
 

Considerations for clinical care

The AHA statement offers several “considerations for clinical practice” with regard to ACS diagnosis and management in elderly adults. They include:

• ACS presentations without chest pain, such as shortness of breath, syncope, or sudden confusion, are more common in older adults.
• Many older adults have persistent elevations in cardiac troponin levels from myocardial fibrosis and kidney disease that diminish the positive predictive value of high-sensitivity cardiac troponin (hs-cTn) assays for identifying acute and chronic myocardial injury. For this reason, evaluating patterns of rise and fall is essential.
• Age-related changes in metabolism, weight, and muscle mass may require different choices in anticoagulant medications to lower bleeding risk.
• Clopidogrel (Plavix) is the preferred P2Y12 inhibitor because of a significantly lower bleeding profile than ticagrelor (Brilinta) or prasugrel (Effient). For patients with ST-segment myocardial infarction (STEMI) or complex anatomy, the use of ticagrelor is “reasonable.”
• Poor kidney function can increase the risk for contrast-induced acute kidney injury.
• Although the risks are greater, percutaneous coronary intervention or bypass surgery are beneficial in select older adults with ACS.
• Post-MI care should include cardiac rehabilitation tailored to address each patient’s circumstances and personal goals of care.
• For patients with cognitive difficulties and limited mobility, consider simplified medication plans with fewer doses per day and 90-day supplies to prevent the need for frequent refills.
• Patient care plans should be individualized, with input from a multidisciplinary team that may include cardiologists, surgeons, geriatricians, primary care clinicians, nutritionists, social workers, and family members.
• Determine a priori goals of care in older patients to help avoid an unwanted or futile intervention.

This scientific statement was prepared by the volunteer writing group on behalf of the AHA Cardiovascular Diseases in Older Populations Committee of the Council on Clinical Cardiology; the Council on Cardiovascular and Stroke Nursing; the Council on Cardiovascular Radiology and Intervention; and the Council on Lifestyle and Cardiometabolic Health.

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

Age-related changes in general and cardiovascular health likely require modifications in how acute coronary syndrome (ACS) is diagnosed and managed in adults aged 75 and older, the American Heart Association says in a new scientific statement.

The statement outlines a framework to integrate geriatric risks into the management of ACS, including the diagnostic approach, pharmacotherapy, revascularization strategies, prevention of adverse events, and transition care planning.

The 31-page statement was published online in the AHA journal Circulation (2022 Dec 12. doi: 10.1161/CIR.0000000000001112). It updates a 2007 AHA statement on treatment of ACS in the elderly.
 

Complex patient group

Adults aged 75 and older make up roughly 30%-40% of all hospitalized patients with ACS and the majority of ACS-related deaths occur in this group, the writing group notes.

“Older patients have more pronounced anatomical changes and more severe functional impairment, and they are more likely to have additional health conditions,” writing group chair Abdulla A. Damluji, MD, PhD, director of the Inova Center of Outcomes Research in Fairfax, Va., notes in a news release.

“These include frailty, other chronic disorders (treated with multiple medications), physical dysfunction, cognitive decline and/or urinary incontinence – and these are not regularly studied in the context of ACS,” Dr. Damluji explained.

The writing group notes that the presence of one or more geriatric syndromes may substantially affect ACS clinical presentation, clinical course and prognosis, therapeutic decision-making, and response to treatment.

“It is therefore fundamental that clinicians caring for older patients with ACS be alert to the presence of geriatric syndromes and be able to integrate them into the care plan when appropriate,” they say.

They recommend a holistic, individualized, and patient-centered approach to ACS care in the elderly, taking into consideration coexisting and overlapping health issues.
 

Considerations for clinical care

The AHA statement offers several “considerations for clinical practice” with regard to ACS diagnosis and management in elderly adults. They include:

• ACS presentations without chest pain, such as shortness of breath, syncope, or sudden confusion, are more common in older adults.
• Many older adults have persistent elevations in cardiac troponin levels from myocardial fibrosis and kidney disease that diminish the positive predictive value of high-sensitivity cardiac troponin (hs-cTn) assays for identifying acute and chronic myocardial injury. For this reason, evaluating patterns of rise and fall is essential.
• Age-related changes in metabolism, weight, and muscle mass may require different choices in anticoagulant medications to lower bleeding risk.
• Clopidogrel (Plavix) is the preferred P2Y12 inhibitor because of a significantly lower bleeding profile than ticagrelor (Brilinta) or prasugrel (Effient). For patients with ST-segment myocardial infarction (STEMI) or complex anatomy, the use of ticagrelor is “reasonable.”
• Poor kidney function can increase the risk for contrast-induced acute kidney injury.
• Although the risks are greater, percutaneous coronary intervention or bypass surgery are beneficial in select older adults with ACS.
• Post-MI care should include cardiac rehabilitation tailored to address each patient’s circumstances and personal goals of care.
• For patients with cognitive difficulties and limited mobility, consider simplified medication plans with fewer doses per day and 90-day supplies to prevent the need for frequent refills.
• Patient care plans should be individualized, with input from a multidisciplinary team that may include cardiologists, surgeons, geriatricians, primary care clinicians, nutritionists, social workers, and family members.
• Determine a priori goals of care in older patients to help avoid an unwanted or futile intervention.

This scientific statement was prepared by the volunteer writing group on behalf of the AHA Cardiovascular Diseases in Older Populations Committee of the Council on Clinical Cardiology; the Council on Cardiovascular and Stroke Nursing; the Council on Cardiovascular Radiology and Intervention; and the Council on Lifestyle and Cardiometabolic Health.

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

Age-related changes in general and cardiovascular health likely require modifications in how acute coronary syndrome (ACS) is diagnosed and managed in adults aged 75 and older, the American Heart Association says in a new scientific statement.

The statement outlines a framework to integrate geriatric risks into the management of ACS, including the diagnostic approach, pharmacotherapy, revascularization strategies, prevention of adverse events, and transition care planning.

The 31-page statement was published online in the AHA journal Circulation (2022 Dec 12. doi: 10.1161/CIR.0000000000001112). It updates a 2007 AHA statement on treatment of ACS in the elderly.
 

Complex patient group

Adults aged 75 and older make up roughly 30%-40% of all hospitalized patients with ACS and the majority of ACS-related deaths occur in this group, the writing group notes.

“Older patients have more pronounced anatomical changes and more severe functional impairment, and they are more likely to have additional health conditions,” writing group chair Abdulla A. Damluji, MD, PhD, director of the Inova Center of Outcomes Research in Fairfax, Va., notes in a news release.

“These include frailty, other chronic disorders (treated with multiple medications), physical dysfunction, cognitive decline and/or urinary incontinence – and these are not regularly studied in the context of ACS,” Dr. Damluji explained.

The writing group notes that the presence of one or more geriatric syndromes may substantially affect ACS clinical presentation, clinical course and prognosis, therapeutic decision-making, and response to treatment.

“It is therefore fundamental that clinicians caring for older patients with ACS be alert to the presence of geriatric syndromes and be able to integrate them into the care plan when appropriate,” they say.

They recommend a holistic, individualized, and patient-centered approach to ACS care in the elderly, taking into consideration coexisting and overlapping health issues.
 

Considerations for clinical care

The AHA statement offers several “considerations for clinical practice” with regard to ACS diagnosis and management in elderly adults. They include:

• ACS presentations without chest pain, such as shortness of breath, syncope, or sudden confusion, are more common in older adults.
• Many older adults have persistent elevations in cardiac troponin levels from myocardial fibrosis and kidney disease that diminish the positive predictive value of high-sensitivity cardiac troponin (hs-cTn) assays for identifying acute and chronic myocardial injury. For this reason, evaluating patterns of rise and fall is essential.
• Age-related changes in metabolism, weight, and muscle mass may require different choices in anticoagulant medications to lower bleeding risk.
• Clopidogrel (Plavix) is the preferred P2Y12 inhibitor because of a significantly lower bleeding profile than ticagrelor (Brilinta) or prasugrel (Effient). For patients with ST-segment myocardial infarction (STEMI) or complex anatomy, the use of ticagrelor is “reasonable.”
• Poor kidney function can increase the risk for contrast-induced acute kidney injury.
• Although the risks are greater, percutaneous coronary intervention or bypass surgery are beneficial in select older adults with ACS.
• Post-MI care should include cardiac rehabilitation tailored to address each patient’s circumstances and personal goals of care.
• For patients with cognitive difficulties and limited mobility, consider simplified medication plans with fewer doses per day and 90-day supplies to prevent the need for frequent refills.
• Patient care plans should be individualized, with input from a multidisciplinary team that may include cardiologists, surgeons, geriatricians, primary care clinicians, nutritionists, social workers, and family members.
• Determine a priori goals of care in older patients to help avoid an unwanted or futile intervention.

This scientific statement was prepared by the volunteer writing group on behalf of the AHA Cardiovascular Diseases in Older Populations Committee of the Council on Clinical Cardiology; the Council on Cardiovascular and Stroke Nursing; the Council on Cardiovascular Radiology and Intervention; and the Council on Lifestyle and Cardiometabolic Health.

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

ILLUSTRATIVE CASE

A 72-year-old man with a history of hypertension, permanent atrial fibrillation, and heart failure (HF) comes into your clinic for follow-up. He was hospitalized a few months ago for HF requiring diuresis. His echocardiogram at that time showed an EF of 50% and no significant valvular disease. He does not have a history of diabetes or tobacco use. His medication regimen includes metoprolol, lisinopril-hydrochlorothiazide, apixaban, and atorvastatin. The patient is still symptomatic from his HF and asks you if there is anything else he can do to prevent another hospitalization for HF.

HFpEF was first defined as HF in patients with a left ventricular ejection fraction (LVEF) > 40%. However, HF with an LVEF between 41% and 49% has been reclassified as its own category: heart failure with mildly reduced ejection fraction (HFmrEF).² HFpEF is now diagnosed when the patient has HF symptoms and an LVEF ≥ 50%, mimickers (lung disease, pulmonary embolism, pulmonary hypertension, and renal disease) have been excluded, and there is evidence of elevated left ventricular filling pressure or noninvasive correlates such as elevated natriuretic peptides. It is estimated that HFpEF comprises half of all patients with HF.³

In comparison with HF with reduced ejection fraction (HFrEF), there are limited proven treatment options with cardiovascular (CV) benefit in HFpEF.⁴ Spironolactone is associated with a slight decrease in HF-­related hospitalizations but not with a reduction in CV or all-cause mortality for patients with HFpEF.^4,5 Angiotensin-­converting enzyme (ACE) inhibitors, angiotensin receptor blockers (ARBs), and beta-blockers have not been shown to reduce morbidity or mortality in HFpEF when not indicated for another reason.^6,7 Sodium-glucose cotransporter 2 (SGLT2) inhibitors are known to decrease the development and progression of HFrEF⁸; however, the effect of SGLT2 inhibition in patients with HFpEF remains unclear. Post hoc analyses of a multicenter trial of dapagliflozin in type 2 diabetes indicated no reduction in CV death, hospitalization, or all-cause mortality in HFpEF.⁹ Another study found improved CV mortality and decreased HF-related urgent visits and hospitalizations with sotagliflozin, but the number of events was too small to estimate a treatment effect.¹⁰ Given this uncertainty, the Empagliflozin Outcome Trial in Patients With Chronic Heart Failure With Preserved Ejection Fraction (EMPEROR-­Preserved) was conducted to evaluate the effects of SGLT2 inhibition with empagliflozin in patients with HFpEF.¹

STUDY SUMMARY

Confirmation of benefit of empagliflozin for patients with HFpEF

The EMPEROR-Preserved study was a ­double-blind, placebo-controlled trial that randomized adult patients with HFpEF (defined by an LVEF > 40%) to either placebo or empagliflozin 10 mg/d, in addition to usual therapy. Patients were randomized in a 1:1 ratio stratified by geographic region, diabetes status, renal function (estimated glomerular filtration rate [eGFR] either < 60 or ≥ 60 mL/min/1.73 m²), and LVEF > 40% to < 50% or LVEF ≥ 50%.

For patients with HFpEF, empagliflozin added to usual care significantly reduced the risk of hospitalization for heart failure, regardless of whether patients had diabetes.

Included patients were 18 years or older and had an NT-proBNP level > 300 pg/mL (or > 900 pg/mL if the patient had atrial fibrillation at baseline), an LVEF > 40%, and New York Heart Association (NYHA) class II-IV symptoms at baseline. Patients with a CV event in the preceding 90 days, systolic blood pressure ≥ 180 mm Hg, or significant valvular disease were excluded from the study.

The primary outcome was a composite of CV death or first hospitalization for HF. The secondary outcomes were all hospitalizations for HF and the rate of decline in eGFR.

Of the 5988 patients in the trial, 2997 were randomized to receive empagliflozin and 2991 were randomized to placebo. The average age was 72 years in each group, 45% of patients were women, about 76% were White, and 12% were from North America. About 81% of patients were classified as NYHA class II, nearly half had diabetes, and half had an eGFR < 60 mL/min/1.73 m². The median body mass index (BMI) was 30, and the median LVEF was 54%. At baseline, the groups were similar in BMI, history of HF hospitalization in the past 12 months, history of common risk factors for HFpEF (atrial fibrillation, diabetes, and hypertension), and prescribed CV medications (ACE inhibitor or ARB with or without a neprilysin inhibitor, spironolactone, beta-blocker, digitalis glycosides, aspirin, and statins). Patients were followed for a median of 26.2 months.

Continue to: The primary composite...

The primary composite outcome of death from CV causes or HF-related hospitalization occurred in 415 patients (13.8%) in the empagliflozin group and in 511 patients (17.1%) in the placebo group (hazard ratio [HR] = 0.79; 95% CI, 0.69-0.90; P < .001). The number needed to treat to prevent 1 primary outcome event was 31 (95% CI, 20-69). Hospitalization for HF occurred in 259 patients (8.6%) with empagliflozin vs 352 patients (11.8%) with placebo (HR = 0.71; 95% CI, 0.60-0.83), and CV death occurred in 219 patients (7.3%) with empagliflozin vs 244 patients (8.2%) with placebo (HR = 0.91; 95% CI, 0.76-1.09). The effect was consistent in patients with or without diabetes at baseline; however, the largest reduction in the primary composite outcome was seen in those with an LVEF < 50%, age ≥ 70 years old, BMI < 30, and NYHA class II status.

The secondary outcome of total number of hospitalizations for HF was 407 with empagliflozin vs 541 with placebo (HR = 0.73; 95% CI, 0.61-0.88; P < .001). The rate of decline in the eGFR per year was –1.25 in the empagliflozin group vs –2.62 in the placebo group (P < .001), indicating that those taking empagliflozin had preserved renal function compared with those taking placebo.

Death from any cause occurred in 422 patients (14.1%) in the empagliflozin group and 427 patients (14.3%) in the placebo group (HR = 1.00; 95% CI, 0.87-1.15). Empagliflozin treatment was associated with higher rates of genital infections (2.2% vs 0.7%; P value not provided), urinary tract infections (9.9% vs 8.1%; P value not provided), and hypotension (10.4% vs 8.6%; P value not provided), compared to placebo.

WHAT’S NEW

Risk of hospitalization significantly reduced for patients with HFpEF

In the EMPEROR-Preserved study, empagliflozin led to a lower incidence of hospitalization for HF in patients with HFpEF but did not significantly reduce the number of deaths from CV disease or other causes. In comparison, in the similarly designed EMPEROR-Reduced trial, treatment with empagliflozin reduced CV and all-cause mortality in individuals with HFrEF.⁸

CAVEATS

HF criteria, study population may limit generalizability

The reduction in the primary outcome of CV death or first hospitalization was most pronounced in patients with an LVEF > 40% to < 50%, typically defined as HFmrEF, who often have clinical features similar to those with HFrEF. This raises the question of how generalizable these results are for all patients with HFpEF.

Continue to: The study's generalizability...

Empagliflozin treatment, however, was associated with higher rates of genital infections, urinary tract infections, and hypotension, compared to placebo.

The study’s generalizability was further limited by its significant exclusion criteria, which included elevated blood pressure, chronic obstructive pulmonary disease on home oxygen, liver disease, renal disease with an eGFR < 20 mL/min/1.73 m² or requiring dialysis, and BMI ≥ 45.

Finally, only 12% of patients were from North America, and results were not significant for this subgroup (HR = 0.72; 95% CI, 0.52-1.00), which may challenge its external validity. The authors noted that 23% of patients discontinued treatment for reasons other than death, which may have driven the null effect.

CHALLENGES TO IMPLEMENTATION

Empagliflozin is expensive,but coverage may improve

Cost could be a major barrier to implementation. Retail pricing for empagliflozin is estimated to be more than $550 per month, which may be prohibitive for patients with no insurance or with higher-deductible plans.¹¹ However, the US Food and Drug Administration has approved empagliflozin to reduce the risk of CV death and hospitalization for HF in adults,¹² which may help to improve insurance coverage.

ILLUSTRATIVE CASE

A 72-year-old man with a history of hypertension, permanent atrial fibrillation, and heart failure (HF) comes into your clinic for follow-up. He was hospitalized a few months ago for HF requiring diuresis. His echocardiogram at that time showed an EF of 50% and no significant valvular disease. He does not have a history of diabetes or tobacco use. His medication regimen includes metoprolol, lisinopril-hydrochlorothiazide, apixaban, and atorvastatin. The patient is still symptomatic from his HF and asks you if there is anything else he can do to prevent another hospitalization for HF.

HFpEF was first defined as HF in patients with a left ventricular ejection fraction (LVEF) > 40%. However, HF with an LVEF between 41% and 49% has been reclassified as its own category: heart failure with mildly reduced ejection fraction (HFmrEF).² HFpEF is now diagnosed when the patient has HF symptoms and an LVEF ≥ 50%, mimickers (lung disease, pulmonary embolism, pulmonary hypertension, and renal disease) have been excluded, and there is evidence of elevated left ventricular filling pressure or noninvasive correlates such as elevated natriuretic peptides. It is estimated that HFpEF comprises half of all patients with HF.³

In comparison with HF with reduced ejection fraction (HFrEF), there are limited proven treatment options with cardiovascular (CV) benefit in HFpEF.⁴ Spironolactone is associated with a slight decrease in HF-­related hospitalizations but not with a reduction in CV or all-cause mortality for patients with HFpEF.^4,5 Angiotensin-­converting enzyme (ACE) inhibitors, angiotensin receptor blockers (ARBs), and beta-blockers have not been shown to reduce morbidity or mortality in HFpEF when not indicated for another reason.^6,7 Sodium-glucose cotransporter 2 (SGLT2) inhibitors are known to decrease the development and progression of HFrEF⁸; however, the effect of SGLT2 inhibition in patients with HFpEF remains unclear. Post hoc analyses of a multicenter trial of dapagliflozin in type 2 diabetes indicated no reduction in CV death, hospitalization, or all-cause mortality in HFpEF.⁹ Another study found improved CV mortality and decreased HF-related urgent visits and hospitalizations with sotagliflozin, but the number of events was too small to estimate a treatment effect.¹⁰ Given this uncertainty, the Empagliflozin Outcome Trial in Patients With Chronic Heart Failure With Preserved Ejection Fraction (EMPEROR-­Preserved) was conducted to evaluate the effects of SGLT2 inhibition with empagliflozin in patients with HFpEF.¹

STUDY SUMMARY

Confirmation of benefit of empagliflozin for patients with HFpEF

The EMPEROR-Preserved study was a ­double-blind, placebo-controlled trial that randomized adult patients with HFpEF (defined by an LVEF > 40%) to either placebo or empagliflozin 10 mg/d, in addition to usual therapy. Patients were randomized in a 1:1 ratio stratified by geographic region, diabetes status, renal function (estimated glomerular filtration rate [eGFR] either < 60 or ≥ 60 mL/min/1.73 m²), and LVEF > 40% to < 50% or LVEF ≥ 50%.

For patients with HFpEF, empagliflozin added to usual care significantly reduced the risk of hospitalization for heart failure, regardless of whether patients had diabetes.

Included patients were 18 years or older and had an NT-proBNP level > 300 pg/mL (or > 900 pg/mL if the patient had atrial fibrillation at baseline), an LVEF > 40%, and New York Heart Association (NYHA) class II-IV symptoms at baseline. Patients with a CV event in the preceding 90 days, systolic blood pressure ≥ 180 mm Hg, or significant valvular disease were excluded from the study.

The primary outcome was a composite of CV death or first hospitalization for HF. The secondary outcomes were all hospitalizations for HF and the rate of decline in eGFR.

Of the 5988 patients in the trial, 2997 were randomized to receive empagliflozin and 2991 were randomized to placebo. The average age was 72 years in each group, 45% of patients were women, about 76% were White, and 12% were from North America. About 81% of patients were classified as NYHA class II, nearly half had diabetes, and half had an eGFR < 60 mL/min/1.73 m². The median body mass index (BMI) was 30, and the median LVEF was 54%. At baseline, the groups were similar in BMI, history of HF hospitalization in the past 12 months, history of common risk factors for HFpEF (atrial fibrillation, diabetes, and hypertension), and prescribed CV medications (ACE inhibitor or ARB with or without a neprilysin inhibitor, spironolactone, beta-blocker, digitalis glycosides, aspirin, and statins). Patients were followed for a median of 26.2 months.

Continue to: The primary composite...

The primary composite outcome of death from CV causes or HF-related hospitalization occurred in 415 patients (13.8%) in the empagliflozin group and in 511 patients (17.1%) in the placebo group (hazard ratio [HR] = 0.79; 95% CI, 0.69-0.90; P < .001). The number needed to treat to prevent 1 primary outcome event was 31 (95% CI, 20-69). Hospitalization for HF occurred in 259 patients (8.6%) with empagliflozin vs 352 patients (11.8%) with placebo (HR = 0.71; 95% CI, 0.60-0.83), and CV death occurred in 219 patients (7.3%) with empagliflozin vs 244 patients (8.2%) with placebo (HR = 0.91; 95% CI, 0.76-1.09). The effect was consistent in patients with or without diabetes at baseline; however, the largest reduction in the primary composite outcome was seen in those with an LVEF < 50%, age ≥ 70 years old, BMI < 30, and NYHA class II status.

The secondary outcome of total number of hospitalizations for HF was 407 with empagliflozin vs 541 with placebo (HR = 0.73; 95% CI, 0.61-0.88; P < .001). The rate of decline in the eGFR per year was –1.25 in the empagliflozin group vs –2.62 in the placebo group (P < .001), indicating that those taking empagliflozin had preserved renal function compared with those taking placebo.

Death from any cause occurred in 422 patients (14.1%) in the empagliflozin group and 427 patients (14.3%) in the placebo group (HR = 1.00; 95% CI, 0.87-1.15). Empagliflozin treatment was associated with higher rates of genital infections (2.2% vs 0.7%; P value not provided), urinary tract infections (9.9% vs 8.1%; P value not provided), and hypotension (10.4% vs 8.6%; P value not provided), compared to placebo.

WHAT’S NEW

Risk of hospitalization significantly reduced for patients with HFpEF

In the EMPEROR-Preserved study, empagliflozin led to a lower incidence of hospitalization for HF in patients with HFpEF but did not significantly reduce the number of deaths from CV disease or other causes. In comparison, in the similarly designed EMPEROR-Reduced trial, treatment with empagliflozin reduced CV and all-cause mortality in individuals with HFrEF.⁸

CAVEATS

HF criteria, study population may limit generalizability

The reduction in the primary outcome of CV death or first hospitalization was most pronounced in patients with an LVEF > 40% to < 50%, typically defined as HFmrEF, who often have clinical features similar to those with HFrEF. This raises the question of how generalizable these results are for all patients with HFpEF.

Continue to: The study's generalizability...

Empagliflozin treatment, however, was associated with higher rates of genital infections, urinary tract infections, and hypotension, compared to placebo.

The study’s generalizability was further limited by its significant exclusion criteria, which included elevated blood pressure, chronic obstructive pulmonary disease on home oxygen, liver disease, renal disease with an eGFR < 20 mL/min/1.73 m² or requiring dialysis, and BMI ≥ 45.

Finally, only 12% of patients were from North America, and results were not significant for this subgroup (HR = 0.72; 95% CI, 0.52-1.00), which may challenge its external validity. The authors noted that 23% of patients discontinued treatment for reasons other than death, which may have driven the null effect.

CHALLENGES TO IMPLEMENTATION

Empagliflozin is expensive,but coverage may improve

Cost could be a major barrier to implementation. Retail pricing for empagliflozin is estimated to be more than $550 per month, which may be prohibitive for patients with no insurance or with higher-deductible plans.¹¹ However, the US Food and Drug Administration has approved empagliflozin to reduce the risk of CV death and hospitalization for HF in adults,¹² which may help to improve insurance coverage.

ILLUSTRATIVE CASE

A 72-year-old man with a history of hypertension, permanent atrial fibrillation, and heart failure (HF) comes into your clinic for follow-up. He was hospitalized a few months ago for HF requiring diuresis. His echocardiogram at that time showed an EF of 50% and no significant valvular disease. He does not have a history of diabetes or tobacco use. His medication regimen includes metoprolol, lisinopril-hydrochlorothiazide, apixaban, and atorvastatin. The patient is still symptomatic from his HF and asks you if there is anything else he can do to prevent another hospitalization for HF.

HFpEF was first defined as HF in patients with a left ventricular ejection fraction (LVEF) > 40%. However, HF with an LVEF between 41% and 49% has been reclassified as its own category: heart failure with mildly reduced ejection fraction (HFmrEF).² HFpEF is now diagnosed when the patient has HF symptoms and an LVEF ≥ 50%, mimickers (lung disease, pulmonary embolism, pulmonary hypertension, and renal disease) have been excluded, and there is evidence of elevated left ventricular filling pressure or noninvasive correlates such as elevated natriuretic peptides. It is estimated that HFpEF comprises half of all patients with HF.³

In comparison with HF with reduced ejection fraction (HFrEF), there are limited proven treatment options with cardiovascular (CV) benefit in HFpEF.⁴ Spironolactone is associated with a slight decrease in HF-­related hospitalizations but not with a reduction in CV or all-cause mortality for patients with HFpEF.^4,5 Angiotensin-­converting enzyme (ACE) inhibitors, angiotensin receptor blockers (ARBs), and beta-blockers have not been shown to reduce morbidity or mortality in HFpEF when not indicated for another reason.^6,7 Sodium-glucose cotransporter 2 (SGLT2) inhibitors are known to decrease the development and progression of HFrEF⁸; however, the effect of SGLT2 inhibition in patients with HFpEF remains unclear. Post hoc analyses of a multicenter trial of dapagliflozin in type 2 diabetes indicated no reduction in CV death, hospitalization, or all-cause mortality in HFpEF.⁹ Another study found improved CV mortality and decreased HF-related urgent visits and hospitalizations with sotagliflozin, but the number of events was too small to estimate a treatment effect.¹⁰ Given this uncertainty, the Empagliflozin Outcome Trial in Patients With Chronic Heart Failure With Preserved Ejection Fraction (EMPEROR-­Preserved) was conducted to evaluate the effects of SGLT2 inhibition with empagliflozin in patients with HFpEF.¹

STUDY SUMMARY

Confirmation of benefit of empagliflozin for patients with HFpEF

The EMPEROR-Preserved study was a ­double-blind, placebo-controlled trial that randomized adult patients with HFpEF (defined by an LVEF > 40%) to either placebo or empagliflozin 10 mg/d, in addition to usual therapy. Patients were randomized in a 1:1 ratio stratified by geographic region, diabetes status, renal function (estimated glomerular filtration rate [eGFR] either < 60 or ≥ 60 mL/min/1.73 m²), and LVEF > 40% to < 50% or LVEF ≥ 50%.

For patients with HFpEF, empagliflozin added to usual care significantly reduced the risk of hospitalization for heart failure, regardless of whether patients had diabetes.

Included patients were 18 years or older and had an NT-proBNP level > 300 pg/mL (or > 900 pg/mL if the patient had atrial fibrillation at baseline), an LVEF > 40%, and New York Heart Association (NYHA) class II-IV symptoms at baseline. Patients with a CV event in the preceding 90 days, systolic blood pressure ≥ 180 mm Hg, or significant valvular disease were excluded from the study.

The primary outcome was a composite of CV death or first hospitalization for HF. The secondary outcomes were all hospitalizations for HF and the rate of decline in eGFR.

Of the 5988 patients in the trial, 2997 were randomized to receive empagliflozin and 2991 were randomized to placebo. The average age was 72 years in each group, 45% of patients were women, about 76% were White, and 12% were from North America. About 81% of patients were classified as NYHA class II, nearly half had diabetes, and half had an eGFR < 60 mL/min/1.73 m². The median body mass index (BMI) was 30, and the median LVEF was 54%. At baseline, the groups were similar in BMI, history of HF hospitalization in the past 12 months, history of common risk factors for HFpEF (atrial fibrillation, diabetes, and hypertension), and prescribed CV medications (ACE inhibitor or ARB with or without a neprilysin inhibitor, spironolactone, beta-blocker, digitalis glycosides, aspirin, and statins). Patients were followed for a median of 26.2 months.

Continue to: The primary composite...

The primary composite outcome of death from CV causes or HF-related hospitalization occurred in 415 patients (13.8%) in the empagliflozin group and in 511 patients (17.1%) in the placebo group (hazard ratio [HR] = 0.79; 95% CI, 0.69-0.90; P < .001). The number needed to treat to prevent 1 primary outcome event was 31 (95% CI, 20-69). Hospitalization for HF occurred in 259 patients (8.6%) with empagliflozin vs 352 patients (11.8%) with placebo (HR = 0.71; 95% CI, 0.60-0.83), and CV death occurred in 219 patients (7.3%) with empagliflozin vs 244 patients (8.2%) with placebo (HR = 0.91; 95% CI, 0.76-1.09). The effect was consistent in patients with or without diabetes at baseline; however, the largest reduction in the primary composite outcome was seen in those with an LVEF < 50%, age ≥ 70 years old, BMI < 30, and NYHA class II status.

The secondary outcome of total number of hospitalizations for HF was 407 with empagliflozin vs 541 with placebo (HR = 0.73; 95% CI, 0.61-0.88; P < .001). The rate of decline in the eGFR per year was –1.25 in the empagliflozin group vs –2.62 in the placebo group (P < .001), indicating that those taking empagliflozin had preserved renal function compared with those taking placebo.

Death from any cause occurred in 422 patients (14.1%) in the empagliflozin group and 427 patients (14.3%) in the placebo group (HR = 1.00; 95% CI, 0.87-1.15). Empagliflozin treatment was associated with higher rates of genital infections (2.2% vs 0.7%; P value not provided), urinary tract infections (9.9% vs 8.1%; P value not provided), and hypotension (10.4% vs 8.6%; P value not provided), compared to placebo.

WHAT’S NEW

Risk of hospitalization significantly reduced for patients with HFpEF

In the EMPEROR-Preserved study, empagliflozin led to a lower incidence of hospitalization for HF in patients with HFpEF but did not significantly reduce the number of deaths from CV disease or other causes. In comparison, in the similarly designed EMPEROR-Reduced trial, treatment with empagliflozin reduced CV and all-cause mortality in individuals with HFrEF.⁸

CAVEATS

HF criteria, study population may limit generalizability

The reduction in the primary outcome of CV death or first hospitalization was most pronounced in patients with an LVEF > 40% to < 50%, typically defined as HFmrEF, who often have clinical features similar to those with HFrEF. This raises the question of how generalizable these results are for all patients with HFpEF.

Continue to: The study's generalizability...

Empagliflozin treatment, however, was associated with higher rates of genital infections, urinary tract infections, and hypotension, compared to placebo.

The study’s generalizability was further limited by its significant exclusion criteria, which included elevated blood pressure, chronic obstructive pulmonary disease on home oxygen, liver disease, renal disease with an eGFR < 20 mL/min/1.73 m² or requiring dialysis, and BMI ≥ 45.

Finally, only 12% of patients were from North America, and results were not significant for this subgroup (HR = 0.72; 95% CI, 0.52-1.00), which may challenge its external validity. The authors noted that 23% of patients discontinued treatment for reasons other than death, which may have driven the null effect.

CHALLENGES TO IMPLEMENTATION

Empagliflozin is expensive,but coverage may improve

Cost could be a major barrier to implementation. Retail pricing for empagliflozin is estimated to be more than $550 per month, which may be prohibitive for patients with no insurance or with higher-deductible plans.¹¹ However, the US Food and Drug Administration has approved empagliflozin to reduce the risk of CV death and hospitalization for HF in adults,¹² which may help to improve insurance coverage.

THE CASE

A 40-year-old woman with no significant medical history sought care at the emergency department for a fever, rash, and arthralgia. On admission, she had worsening bilateral ankle pain and was having difficulty walking. During the previous 3 months, she’d had 3 episodes of tonsillitis, all of which were presumed to be caused by Streptococcus, although no swabs were obtained. Her primary care physician treated her with antibiotics each time: 1 round of amoxicillin 500 mg twice daily for 10 days and 2 rounds of amoxicillin/clavulanate 875 mg twice daily for 7 to 10 days. During the previous month, she’d experienced intermittent fevers ranging from 100.2 °F to 100.8 °F, with no distinct pattern.

The patient said that 2 weeks prior to her admission to the hospital, she’d developed a rash on her right arm, which was papular, nondraining, nonpruritic, and not painful (FIGURE 1). Six days later, the rash spread to her left arm, chest, and back, with a few lesions on her legs (FIGURE 2). A few days later, she developed arthralgias in her hips, knees, and ankles. These were associated with the appearance of large, flat, erythematous lesions on her anterior lower extremities (FIGURE 2). About 5 days before she was admitted to our hospital, the patient was seen at another hospital and treated for possible cellulitis with cephalexin (500 mg 4 times daily for 5-7 days), but her symptoms persisted.

At this point, she sought care at our hospital for her worsening lower extremity arthralgia, difficulty walking, and the persistent rash. An initial lab report showed a white blood cell (WBC) count of 12.6 × 10³/µL (normal range, 4.0-10.0 × 10³/µL) with an absolute neutrophil count of 9.7 × 10³/µL ­(normal, 1.7-7.0 × 10³/µL). Her C-reactive protein (CRP) level was elevated (194.7 mg/L; normal, 0.0-5.0 mg/L), as was her erythrocyte sedimentation rate (ESR) (102.0 mm/h; normal, 0.0-20.0 mm/h). A rapid pharyngeal strep test was negative. Her anti-­streptolysin O (ASO) titer was elevated (2092.0 IU/mL; normal, < 250.0 IU/mL), and her rheumatic factor was mildly elevated (19.0 IU/mL; normal, 0.0-14.0 IU/mL). An antinuclear antibody panel was positive at 1:80. Further testing was performed, and the patient was found to be negative for Sjögren syndrome A, Sjögren syndrome B, anti-Smith, scleroderma-70, double-stranded DNA, and chromatin AB—making an autoimmune disease unlikely.

THE DIAGNOSIS

The patient met the American Heart Association’s revised Jones criteria for the diagnosis of rheumatic fever: She had a positive ASO titer; polyarthritis and subcutaneous nodules (2 major criteria); and ESR > 60 mm/h and CRP > 3 mg/L (1 minor criterion).¹ She started taking naproxen 500 mg twice per day and was given a penicillin G 1.5-million-unit injection. A transthoracic echocardiogram also was performed during her admission to rule out endocarditis; no abnormalities were found.

A few days after starting treatment for rheumatic fever, the patient’s WBC count returned to within normal limits and her joint swelling and pain improved; however, her rash did not go away, leading us to wonder if there was a second disease at work. Dermatology was consulted, and a punch biopsy was obtained. The results showed acute febrile neutrophilic dermatosis, or Sweet syndrome.

DISCUSSION

Sweet syndrome is considered rare, and incidence numbers are elusive.² It has a worldwide distribution and no racial bias.³ Sweet syndrome usually occurs in women ages 30 to 50 years, although it may also occur in younger adults and children.³ The differentialdiagnosis for Sweet syndrome is broad and includes infectious and inflammatory disorders, neoplastic conditions, reactive erythemas, vasculitis, other cutaneous conditions, and other systemic diseases.³

Three subtypes have been defined based on etiology: (1) classical (or idiopathic) Sweet syndrome; (2) malignancy-associated Sweet syndrome, which is most often related to acute myelogenous leukemia; and (3) drug-induced Sweet syndrome, which is usually associated with granulocyte colony–­stimulating factor treatment.⁴ Our patient had the most common subtype: classical Sweet syndrome.

Continue to: What you'll see

What you’ll see. Classical Sweet syndrome usually develops approximately 1 to 3 weeks after an infection—usually an upper respiratory tract or gastrointestinal infection.⁵ It may also be associated with inflammatory bowel disease or pregnancy.⁵ Potential symptoms include pyrexia; elevated neutrophil count; papules, nodules, or plaques; and a diffuse infiltrate of predominantly mature neutrophils located in the upper dermis.^1,5

Corticosteroid therapy is the gold standard for treatment of classical Sweet syndrome.Dosing usually starts with prednisone 1 mg/kg/d, which can be tapered to 10 mg/d within 4 to 6 weeks.⁵ If steroid treatment is contraindicated in the patient, alternative treatments are colchicine 0.5 mg 3 times daily for 10 to 21 days or enteric-coated potassium iodide 300 mg 3 times daily until the rash subsides.⁵ Without treatment, symptoms may resolve within weeks to months; with treatment, the rash usually resolves within 2 to 5 days. Some resistant forms may require 2 to 3 months of treatment.

There is a risk of recurrence in approximately one-third of patients after successful treatment of classical Sweet syndrome.⁵ Recurrence can be caused by another inciting factor (ie, irritable bowel disease, upper respiratory tract infection, malignancy, or a new medication), making a new investigation necessary. However, treatment would entail the same medications.⁵

The patient was placed on penicillin V 250 mg twice daily for 5 years due to the significant risk of carditis in the setting of rheumatic fever. She started an oral steroid regimen of a prednisone weekly taper, starting with 60 mg/d, for 4 to 6 weeks. Her papular rash improved soon after initiation of steroid therapy.

THE TAKEAWAY

On presentation, this patient’s symptoms met the Jones criteria for rheumatic fever, but she did not respond to treatment. This led us to revisit her case, order additional tests, and identify a second diagnosis—Sweet syndrome—that responded positively to treatment. This case is a reminder that sometimes the signs and symptoms we are looking at are the result of 2 underlying illnesses, with 1 possibly triggering the other. That was likely what occurred in this case.

CORRESPONDENCE
Farah Leclercq, DO, Department of Family Medicine, University of Florida, 12041 Southwest 1 Lane, Gainesville, FL 32607; [email protected]

THE CASE

A 40-year-old woman with no significant medical history sought care at the emergency department for a fever, rash, and arthralgia. On admission, she had worsening bilateral ankle pain and was having difficulty walking. During the previous 3 months, she’d had 3 episodes of tonsillitis, all of which were presumed to be caused by Streptococcus, although no swabs were obtained. Her primary care physician treated her with antibiotics each time: 1 round of amoxicillin 500 mg twice daily for 10 days and 2 rounds of amoxicillin/clavulanate 875 mg twice daily for 7 to 10 days. During the previous month, she’d experienced intermittent fevers ranging from 100.2 °F to 100.8 °F, with no distinct pattern.

The patient said that 2 weeks prior to her admission to the hospital, she’d developed a rash on her right arm, which was papular, nondraining, nonpruritic, and not painful (FIGURE 1). Six days later, the rash spread to her left arm, chest, and back, with a few lesions on her legs (FIGURE 2). A few days later, she developed arthralgias in her hips, knees, and ankles. These were associated with the appearance of large, flat, erythematous lesions on her anterior lower extremities (FIGURE 2). About 5 days before she was admitted to our hospital, the patient was seen at another hospital and treated for possible cellulitis with cephalexin (500 mg 4 times daily for 5-7 days), but her symptoms persisted.

At this point, she sought care at our hospital for her worsening lower extremity arthralgia, difficulty walking, and the persistent rash. An initial lab report showed a white blood cell (WBC) count of 12.6 × 10³/µL (normal range, 4.0-10.0 × 10³/µL) with an absolute neutrophil count of 9.7 × 10³/µL ­(normal, 1.7-7.0 × 10³/µL). Her C-reactive protein (CRP) level was elevated (194.7 mg/L; normal, 0.0-5.0 mg/L), as was her erythrocyte sedimentation rate (ESR) (102.0 mm/h; normal, 0.0-20.0 mm/h). A rapid pharyngeal strep test was negative. Her anti-­streptolysin O (ASO) titer was elevated (2092.0 IU/mL; normal, < 250.0 IU/mL), and her rheumatic factor was mildly elevated (19.0 IU/mL; normal, 0.0-14.0 IU/mL). An antinuclear antibody panel was positive at 1:80. Further testing was performed, and the patient was found to be negative for Sjögren syndrome A, Sjögren syndrome B, anti-Smith, scleroderma-70, double-stranded DNA, and chromatin AB—making an autoimmune disease unlikely.

THE DIAGNOSIS

The patient met the American Heart Association’s revised Jones criteria for the diagnosis of rheumatic fever: She had a positive ASO titer; polyarthritis and subcutaneous nodules (2 major criteria); and ESR > 60 mm/h and CRP > 3 mg/L (1 minor criterion).¹ She started taking naproxen 500 mg twice per day and was given a penicillin G 1.5-million-unit injection. A transthoracic echocardiogram also was performed during her admission to rule out endocarditis; no abnormalities were found.

A few days after starting treatment for rheumatic fever, the patient’s WBC count returned to within normal limits and her joint swelling and pain improved; however, her rash did not go away, leading us to wonder if there was a second disease at work. Dermatology was consulted, and a punch biopsy was obtained. The results showed acute febrile neutrophilic dermatosis, or Sweet syndrome.

DISCUSSION

Sweet syndrome is considered rare, and incidence numbers are elusive.² It has a worldwide distribution and no racial bias.³ Sweet syndrome usually occurs in women ages 30 to 50 years, although it may also occur in younger adults and children.³ The differentialdiagnosis for Sweet syndrome is broad and includes infectious and inflammatory disorders, neoplastic conditions, reactive erythemas, vasculitis, other cutaneous conditions, and other systemic diseases.³

Three subtypes have been defined based on etiology: (1) classical (or idiopathic) Sweet syndrome; (2) malignancy-associated Sweet syndrome, which is most often related to acute myelogenous leukemia; and (3) drug-induced Sweet syndrome, which is usually associated with granulocyte colony–­stimulating factor treatment.⁴ Our patient had the most common subtype: classical Sweet syndrome.

Continue to: What you'll see

What you’ll see. Classical Sweet syndrome usually develops approximately 1 to 3 weeks after an infection—usually an upper respiratory tract or gastrointestinal infection.⁵ It may also be associated with inflammatory bowel disease or pregnancy.⁵ Potential symptoms include pyrexia; elevated neutrophil count; papules, nodules, or plaques; and a diffuse infiltrate of predominantly mature neutrophils located in the upper dermis.^1,5

Corticosteroid therapy is the gold standard for treatment of classical Sweet syndrome.Dosing usually starts with prednisone 1 mg/kg/d, which can be tapered to 10 mg/d within 4 to 6 weeks.⁵ If steroid treatment is contraindicated in the patient, alternative treatments are colchicine 0.5 mg 3 times daily for 10 to 21 days or enteric-coated potassium iodide 300 mg 3 times daily until the rash subsides.⁵ Without treatment, symptoms may resolve within weeks to months; with treatment, the rash usually resolves within 2 to 5 days. Some resistant forms may require 2 to 3 months of treatment.

There is a risk of recurrence in approximately one-third of patients after successful treatment of classical Sweet syndrome.⁵ Recurrence can be caused by another inciting factor (ie, irritable bowel disease, upper respiratory tract infection, malignancy, or a new medication), making a new investigation necessary. However, treatment would entail the same medications.⁵

The patient was placed on penicillin V 250 mg twice daily for 5 years due to the significant risk of carditis in the setting of rheumatic fever. She started an oral steroid regimen of a prednisone weekly taper, starting with 60 mg/d, for 4 to 6 weeks. Her papular rash improved soon after initiation of steroid therapy.

THE TAKEAWAY

On presentation, this patient’s symptoms met the Jones criteria for rheumatic fever, but she did not respond to treatment. This led us to revisit her case, order additional tests, and identify a second diagnosis—Sweet syndrome—that responded positively to treatment. This case is a reminder that sometimes the signs and symptoms we are looking at are the result of 2 underlying illnesses, with 1 possibly triggering the other. That was likely what occurred in this case.

CORRESPONDENCE
Farah Leclercq, DO, Department of Family Medicine, University of Florida, 12041 Southwest 1 Lane, Gainesville, FL 32607; [email protected]

THE CASE

A 40-year-old woman with no significant medical history sought care at the emergency department for a fever, rash, and arthralgia. On admission, she had worsening bilateral ankle pain and was having difficulty walking. During the previous 3 months, she’d had 3 episodes of tonsillitis, all of which were presumed to be caused by Streptococcus, although no swabs were obtained. Her primary care physician treated her with antibiotics each time: 1 round of amoxicillin 500 mg twice daily for 10 days and 2 rounds of amoxicillin/clavulanate 875 mg twice daily for 7 to 10 days. During the previous month, she’d experienced intermittent fevers ranging from 100.2 °F to 100.8 °F, with no distinct pattern.

The patient said that 2 weeks prior to her admission to the hospital, she’d developed a rash on her right arm, which was papular, nondraining, nonpruritic, and not painful (FIGURE 1). Six days later, the rash spread to her left arm, chest, and back, with a few lesions on her legs (FIGURE 2). A few days later, she developed arthralgias in her hips, knees, and ankles. These were associated with the appearance of large, flat, erythematous lesions on her anterior lower extremities (FIGURE 2). About 5 days before she was admitted to our hospital, the patient was seen at another hospital and treated for possible cellulitis with cephalexin (500 mg 4 times daily for 5-7 days), but her symptoms persisted.

At this point, she sought care at our hospital for her worsening lower extremity arthralgia, difficulty walking, and the persistent rash. An initial lab report showed a white blood cell (WBC) count of 12.6 × 10³/µL (normal range, 4.0-10.0 × 10³/µL) with an absolute neutrophil count of 9.7 × 10³/µL ­(normal, 1.7-7.0 × 10³/µL). Her C-reactive protein (CRP) level was elevated (194.7 mg/L; normal, 0.0-5.0 mg/L), as was her erythrocyte sedimentation rate (ESR) (102.0 mm/h; normal, 0.0-20.0 mm/h). A rapid pharyngeal strep test was negative. Her anti-­streptolysin O (ASO) titer was elevated (2092.0 IU/mL; normal, < 250.0 IU/mL), and her rheumatic factor was mildly elevated (19.0 IU/mL; normal, 0.0-14.0 IU/mL). An antinuclear antibody panel was positive at 1:80. Further testing was performed, and the patient was found to be negative for Sjögren syndrome A, Sjögren syndrome B, anti-Smith, scleroderma-70, double-stranded DNA, and chromatin AB—making an autoimmune disease unlikely.

THE DIAGNOSIS

The patient met the American Heart Association’s revised Jones criteria for the diagnosis of rheumatic fever: She had a positive ASO titer; polyarthritis and subcutaneous nodules (2 major criteria); and ESR > 60 mm/h and CRP > 3 mg/L (1 minor criterion).¹ She started taking naproxen 500 mg twice per day and was given a penicillin G 1.5-million-unit injection. A transthoracic echocardiogram also was performed during her admission to rule out endocarditis; no abnormalities were found.

A few days after starting treatment for rheumatic fever, the patient’s WBC count returned to within normal limits and her joint swelling and pain improved; however, her rash did not go away, leading us to wonder if there was a second disease at work. Dermatology was consulted, and a punch biopsy was obtained. The results showed acute febrile neutrophilic dermatosis, or Sweet syndrome.

DISCUSSION

Sweet syndrome is considered rare, and incidence numbers are elusive.² It has a worldwide distribution and no racial bias.³ Sweet syndrome usually occurs in women ages 30 to 50 years, although it may also occur in younger adults and children.³ The differentialdiagnosis for Sweet syndrome is broad and includes infectious and inflammatory disorders, neoplastic conditions, reactive erythemas, vasculitis, other cutaneous conditions, and other systemic diseases.³

Three subtypes have been defined based on etiology: (1) classical (or idiopathic) Sweet syndrome; (2) malignancy-associated Sweet syndrome, which is most often related to acute myelogenous leukemia; and (3) drug-induced Sweet syndrome, which is usually associated with granulocyte colony–­stimulating factor treatment.⁴ Our patient had the most common subtype: classical Sweet syndrome.

Continue to: What you'll see

What you’ll see. Classical Sweet syndrome usually develops approximately 1 to 3 weeks after an infection—usually an upper respiratory tract or gastrointestinal infection.⁵ It may also be associated with inflammatory bowel disease or pregnancy.⁵ Potential symptoms include pyrexia; elevated neutrophil count; papules, nodules, or plaques; and a diffuse infiltrate of predominantly mature neutrophils located in the upper dermis.^1,5

Corticosteroid therapy is the gold standard for treatment of classical Sweet syndrome.Dosing usually starts with prednisone 1 mg/kg/d, which can be tapered to 10 mg/d within 4 to 6 weeks.⁵ If steroid treatment is contraindicated in the patient, alternative treatments are colchicine 0.5 mg 3 times daily for 10 to 21 days or enteric-coated potassium iodide 300 mg 3 times daily until the rash subsides.⁵ Without treatment, symptoms may resolve within weeks to months; with treatment, the rash usually resolves within 2 to 5 days. Some resistant forms may require 2 to 3 months of treatment.

There is a risk of recurrence in approximately one-third of patients after successful treatment of classical Sweet syndrome.⁵ Recurrence can be caused by another inciting factor (ie, irritable bowel disease, upper respiratory tract infection, malignancy, or a new medication), making a new investigation necessary. However, treatment would entail the same medications.⁵

The patient was placed on penicillin V 250 mg twice daily for 5 years due to the significant risk of carditis in the setting of rheumatic fever. She started an oral steroid regimen of a prednisone weekly taper, starting with 60 mg/d, for 4 to 6 weeks. Her papular rash improved soon after initiation of steroid therapy.

THE TAKEAWAY

On presentation, this patient’s symptoms met the Jones criteria for rheumatic fever, but she did not respond to treatment. This led us to revisit her case, order additional tests, and identify a second diagnosis—Sweet syndrome—that responded positively to treatment. This case is a reminder that sometimes the signs and symptoms we are looking at are the result of 2 underlying illnesses, with 1 possibly triggering the other. That was likely what occurred in this case.

CORRESPONDENCE
Farah Leclercq, DO, Department of Family Medicine, University of Florida, 12041 Southwest 1 Lane, Gainesville, FL 32607; [email protected]

Short bursts of activity are approximately as effective for general health as longer sessions, especially for those who are mainly sedentary, according to several recently published studies.

If your fitness goals are greater, and you want to build muscle strength and endurance, compete in a 5K, or just look better in your swimsuit, you will need to do more. But for basic health, it appears that short bursts can help, the new research papers and experts suggest.

“Whether you accumulate activity in many short bouts versus one extended bout, the general health benefits tend to be similar,” Amanda Paluch, PhD, a physical activity epidemiologist at the University of Massachusetts, Amherst, said in an interview.

Current public health recommendations from the Centers for Disease Control and Prevention suggest doing at least 150 minutes of moderate intensity physical activity per week for health benefits, but this activity can be accumulated in any way over the week, she noted. Previous versions of the CDC guidelines on exercise suggested that physical activity bouts should be at least 10 minutes each, but the latest version of the guidelines acknowledges that bursts of less than 10 minutes may be beneficial.

However, “the activity or fitness level at which someone starts and the specific health goals matter,” Dr. Paluch continued. “Short bouts may be particularly beneficial for those least active to get moving more to improve their general wellness.”

The current federal physical activity guidelines are still worth striving for, and patients can work their way to this goal, accumulating 150 or more minutes in a way that works best for them, she added.

“There is a lack of research directly comparing individuals who consistently accumulate their activity in many short bouts versus single bouts over an extended period of time,” Dr. Paluch noted. From a public health perspective, since both short and long bouts have health benefits, the best physical activity is what fits into your life and helps build a lifelong habit.

The benefits of exercise for cardiovascular health are well documented. A review from Circulation published in 2003 summarized the benefits of regular physical activity on measures of cardiovascular health including reduction in body weight, blood pressure, and bad cholesterol, while increasing insulin sensitivity, good cholesterol, and muscular strength and function. In that review, author Jonathan N. Myers, PhD, now of Stanford (Calif.) University, noted that “one need not be a marathon runner or an elite athlete to derive significant benefits from physical activity.” In fact, “the greatest gains in terms of mortality are achieved when an individual goes from being sedentary to becoming moderately active.”

A recent large, population-based study showed the value of short bursts of exercise for those previously sedentary. In this study, published in Nature Medicine, a team in Australia used wearable fitness trackers to measure the health benefits of what researchers have named “vigorous intermittent lifestyle physical activity” or VILPA.

Some examples of VILPA include power walking on the way to work, climbing stairs, or even running around with your kids on the playground.

Specifically, individuals who engaged in the median VILPA frequency of three bursts of vigorous activity lasting 1-2 minutes showed a 38%-40% reduction in all-cause mortality risk and cancer mortality risk, and a 48%-49% reduction in cardiovascular mortality risk.

The researchers repeated their analysis for a group of 62,344 adults from the UK Biobank who reported regular vigorous physical activity (VPA). They found similar effects on mortality, based on 1,552 deaths reported.

These results suggest that VILPA may be a reasonable physical activity target, especially for people not able or willing to exercise more formally or intensely, the researchers noted.

“We have known for a long time that leisure-time exercise often reaches vigorous intensity and has many health benefits, but we understand less about the health potential of daily movement, especially activities done as part of daily living that reach vigorous intensity,” lead author Emmanuel Stamatakis, PhD, professor of physical activity, lifestyle and population health at the University of Sydney’s Charles Perkins Centre, said in an interview.

“As long as the heart rate goes up for a minute or 2 it will likely be vigorous activity,” Dr. Stamatakis said in an interview. “It is also important that clinicians effectively communicate how patients can know that they are reaching vigorous intensity,” he said.

Signs of vigorous intensity include increased heart rate and getting out of breath after about 20-40 seconds from the start of the VILPA burst. After about a minute of VILPA, the person doing it should be too out of breath to speak more than a few words comfortably, he said.
 

Data support value of any and all exercise

The Nature Medicine study supports other recent research showing the value of short, intense bursts of physical activity. A pair of recent studies also used fitness trackers to measure activity in adults and assess the benefits on outcomes including death and heart disease.

One of these studies, which was published in the European Heart Journal, also used fitness trackers to measure physical activity at moderate and vigorous levels. The researchers found that individuals who performed at least 20% of their physical activity at a moderate to high level, such as by doing brisk walking in lieu of strolling had a significantly lower risk of heart disease than those whose daily activity included less than 20% at a moderate or intense level.

In another study from the European Heart Journal, researchers found that short bursts of vigorous physical activity of 2 minutes or less adding up to 15-20 minutes per week was enough to reduce mortality by as much as 40%.

Plus, a meta-analysis published in the Lancet showed a decrease in all-cause mortality with an increase in the number of daily steps, although the impact of stepping rate on mortality was inconsistent.

“Many studies have investigated the health benefits of physical activity, but not the importance of these difficult-to-capture VILPA bouts that accrue during the course of normal activities of daily living,” Lee Stoner, PhD, an exercise physiologist and director of the Cardiometabolic Lab at the University of North Carolina at Chapel Hill, said in an interview.

Dr. Stoner, who was not involved in the Nature Medicine study, said he was not surprised by the overall finding that doing short bursts of activity impacted mortality and cardiovascular disease, but was slightly surprised by the strength of the evidence.

“The referent group in the Nature Medicine study were those accruing no VILPA”, likely meaning they were very inactive,” Dr. Stoner said and added that he thinks this demonstrates the value of VILPA.

Even without immediately meeting the specific numbers recommended by the CDC, “any physical activity is better than none, especially if vigorous, and VILPA can be built into normal daily routines,” Dr. Stoner added.
 

What’s missing in short bursts?

Short bursts of activity do have their limits when it comes to overall fitness, said Dr. Stoner.

“Endurance will not be improved as much through short bursts, because such activities are unlikely to be as effective at empowering the mitochondria – the batteries keeping our cells running, including skeletal muscle cells,” he said. “Additionally, the vigorous bouts are unlikely to be as effective at improving muscular strength and endurance. For this, it is recommended that we engage each muscle group in strengthening exercises two times per week.”

However, Dr. Stoner agreed that prescribing short bursts of intense activity as part of daily living may be a great way to get people started with exercise.

“The key is to remove barriers to physical activity pursuit, then focusing on long-term routine rather than short-term gain,” he said. “Individuals are better served if they focus on goals other than weight loss, for which physical activity or exercise may not be the solution. Rather, being physically active can improve vigor, make daily activities simpler, and improve cognitive abilities,” and any physical activity is one of the most effective solutions for regulating blood glucose levels and improving cardiovascular risk factors.
 

Make it routine – and fun

To benefit from physical activity, cultivating and sustaining a long-term routine is key, said Dr. Stoner, whose research has focused on sedentary behavior and cardiovascular disease. Whatever the activity is, shorter bursts, or longer bouts or both, it is essential that individuals figure out activities that they enjoy if they want to create sustained behavior, and thus health change, Gabriel Zieff, MA, a doctoral candidate in Dr. Stoner’s Cardiometabolic Lab, who conducts studies on exercise, noted in an interview.

“We exercise enthusiasts and researchers are often hyperfocused on whether this duration or that duration is better, whether this intensity or that intensity is better,” but at the end of the day, it is the enjoyment factor that often predicts sustained behavior change, and should be part of discussions with patients to help reduce sedentary behavior and promote activity, Mr. Zieff said.
 

Short bouts can encourage hesitant exercisers

“To best support health, clinicians should consider taking a few seconds to ask patients about their physical activity levels,” said Dr. Paluch, who was the lead author on the Lancet meta-analysis of daily steps. In that study, Dr. Paluch and colleagues found that taking more steps each day was associated with a progressively lower risk of all-cause mortality. However, that study did not measure step rate.

Clinicians can emphasize that health benefits do not require an hour-long exercise routine and special equipment, and moving more, even in shorts bursts of activity can have meaningful associations with health, particularly for those who are less active, she said.

The recent studies on short bursts of activity agree that “some physical activity is better than none and adults should move more throughout the day in whatever way makes sense to them and fits best into their lives,” said Dr. Paluch. “For example, opting for the stairs instead of the elevator, a brisk walk to the bus stop, a short game of hide and seek with the children or grandchildren – anything that gets your body moving more, even if briefly. Making simple lifestyle changes is often easier in small bites. In time, this can grow into long-term habits, ultimately leading to an overall active lifestyle that supports living healthier for longer.”

The Nature Medicine study was supported by the Australian National Health and Medical Research Council. Several coauthors were supported by the Wellcome Trust, the National Institute for Health Research Oxford Biomedical Research Centre, Novo Nordisk, the British Heart Foundation Centre of Research Excellence, the Alan Turing Institute, the British Heart Foundation, and Health Data Research UK, an initiative funded by UK Research and Innovation. Dr. Paluch and Dr. Stoner had no financial conflicts to disclose.

Short bursts of activity are approximately as effective for general health as longer sessions, especially for those who are mainly sedentary, according to several recently published studies.

If your fitness goals are greater, and you want to build muscle strength and endurance, compete in a 5K, or just look better in your swimsuit, you will need to do more. But for basic health, it appears that short bursts can help, the new research papers and experts suggest.

“Whether you accumulate activity in many short bouts versus one extended bout, the general health benefits tend to be similar,” Amanda Paluch, PhD, a physical activity epidemiologist at the University of Massachusetts, Amherst, said in an interview.

Current public health recommendations from the Centers for Disease Control and Prevention suggest doing at least 150 minutes of moderate intensity physical activity per week for health benefits, but this activity can be accumulated in any way over the week, she noted. Previous versions of the CDC guidelines on exercise suggested that physical activity bouts should be at least 10 minutes each, but the latest version of the guidelines acknowledges that bursts of less than 10 minutes may be beneficial.

However, “the activity or fitness level at which someone starts and the specific health goals matter,” Dr. Paluch continued. “Short bouts may be particularly beneficial for those least active to get moving more to improve their general wellness.”

The current federal physical activity guidelines are still worth striving for, and patients can work their way to this goal, accumulating 150 or more minutes in a way that works best for them, she added.

“There is a lack of research directly comparing individuals who consistently accumulate their activity in many short bouts versus single bouts over an extended period of time,” Dr. Paluch noted. From a public health perspective, since both short and long bouts have health benefits, the best physical activity is what fits into your life and helps build a lifelong habit.

The benefits of exercise for cardiovascular health are well documented. A review from Circulation published in 2003 summarized the benefits of regular physical activity on measures of cardiovascular health including reduction in body weight, blood pressure, and bad cholesterol, while increasing insulin sensitivity, good cholesterol, and muscular strength and function. In that review, author Jonathan N. Myers, PhD, now of Stanford (Calif.) University, noted that “one need not be a marathon runner or an elite athlete to derive significant benefits from physical activity.” In fact, “the greatest gains in terms of mortality are achieved when an individual goes from being sedentary to becoming moderately active.”

A recent large, population-based study showed the value of short bursts of exercise for those previously sedentary. In this study, published in Nature Medicine, a team in Australia used wearable fitness trackers to measure the health benefits of what researchers have named “vigorous intermittent lifestyle physical activity” or VILPA.

Some examples of VILPA include power walking on the way to work, climbing stairs, or even running around with your kids on the playground.

Specifically, individuals who engaged in the median VILPA frequency of three bursts of vigorous activity lasting 1-2 minutes showed a 38%-40% reduction in all-cause mortality risk and cancer mortality risk, and a 48%-49% reduction in cardiovascular mortality risk.

The researchers repeated their analysis for a group of 62,344 adults from the UK Biobank who reported regular vigorous physical activity (VPA). They found similar effects on mortality, based on 1,552 deaths reported.

These results suggest that VILPA may be a reasonable physical activity target, especially for people not able or willing to exercise more formally or intensely, the researchers noted.

“We have known for a long time that leisure-time exercise often reaches vigorous intensity and has many health benefits, but we understand less about the health potential of daily movement, especially activities done as part of daily living that reach vigorous intensity,” lead author Emmanuel Stamatakis, PhD, professor of physical activity, lifestyle and population health at the University of Sydney’s Charles Perkins Centre, said in an interview.

“As long as the heart rate goes up for a minute or 2 it will likely be vigorous activity,” Dr. Stamatakis said in an interview. “It is also important that clinicians effectively communicate how patients can know that they are reaching vigorous intensity,” he said.

Signs of vigorous intensity include increased heart rate and getting out of breath after about 20-40 seconds from the start of the VILPA burst. After about a minute of VILPA, the person doing it should be too out of breath to speak more than a few words comfortably, he said.
 

Data support value of any and all exercise

The Nature Medicine study supports other recent research showing the value of short, intense bursts of physical activity. A pair of recent studies also used fitness trackers to measure activity in adults and assess the benefits on outcomes including death and heart disease.

One of these studies, which was published in the European Heart Journal, also used fitness trackers to measure physical activity at moderate and vigorous levels. The researchers found that individuals who performed at least 20% of their physical activity at a moderate to high level, such as by doing brisk walking in lieu of strolling had a significantly lower risk of heart disease than those whose daily activity included less than 20% at a moderate or intense level.

In another study from the European Heart Journal, researchers found that short bursts of vigorous physical activity of 2 minutes or less adding up to 15-20 minutes per week was enough to reduce mortality by as much as 40%.

Plus, a meta-analysis published in the Lancet showed a decrease in all-cause mortality with an increase in the number of daily steps, although the impact of stepping rate on mortality was inconsistent.

“Many studies have investigated the health benefits of physical activity, but not the importance of these difficult-to-capture VILPA bouts that accrue during the course of normal activities of daily living,” Lee Stoner, PhD, an exercise physiologist and director of the Cardiometabolic Lab at the University of North Carolina at Chapel Hill, said in an interview.

Dr. Stoner, who was not involved in the Nature Medicine study, said he was not surprised by the overall finding that doing short bursts of activity impacted mortality and cardiovascular disease, but was slightly surprised by the strength of the evidence.

“The referent group in the Nature Medicine study were those accruing no VILPA”, likely meaning they were very inactive,” Dr. Stoner said and added that he thinks this demonstrates the value of VILPA.

Even without immediately meeting the specific numbers recommended by the CDC, “any physical activity is better than none, especially if vigorous, and VILPA can be built into normal daily routines,” Dr. Stoner added.
 

What’s missing in short bursts?

Short bursts of activity do have their limits when it comes to overall fitness, said Dr. Stoner.

“Endurance will not be improved as much through short bursts, because such activities are unlikely to be as effective at empowering the mitochondria – the batteries keeping our cells running, including skeletal muscle cells,” he said. “Additionally, the vigorous bouts are unlikely to be as effective at improving muscular strength and endurance. For this, it is recommended that we engage each muscle group in strengthening exercises two times per week.”

However, Dr. Stoner agreed that prescribing short bursts of intense activity as part of daily living may be a great way to get people started with exercise.

“The key is to remove barriers to physical activity pursuit, then focusing on long-term routine rather than short-term gain,” he said. “Individuals are better served if they focus on goals other than weight loss, for which physical activity or exercise may not be the solution. Rather, being physically active can improve vigor, make daily activities simpler, and improve cognitive abilities,” and any physical activity is one of the most effective solutions for regulating blood glucose levels and improving cardiovascular risk factors.
 

Make it routine – and fun

To benefit from physical activity, cultivating and sustaining a long-term routine is key, said Dr. Stoner, whose research has focused on sedentary behavior and cardiovascular disease. Whatever the activity is, shorter bursts, or longer bouts or both, it is essential that individuals figure out activities that they enjoy if they want to create sustained behavior, and thus health change, Gabriel Zieff, MA, a doctoral candidate in Dr. Stoner’s Cardiometabolic Lab, who conducts studies on exercise, noted in an interview.

“We exercise enthusiasts and researchers are often hyperfocused on whether this duration or that duration is better, whether this intensity or that intensity is better,” but at the end of the day, it is the enjoyment factor that often predicts sustained behavior change, and should be part of discussions with patients to help reduce sedentary behavior and promote activity, Mr. Zieff said.
 

Short bouts can encourage hesitant exercisers

“To best support health, clinicians should consider taking a few seconds to ask patients about their physical activity levels,” said Dr. Paluch, who was the lead author on the Lancet meta-analysis of daily steps. In that study, Dr. Paluch and colleagues found that taking more steps each day was associated with a progressively lower risk of all-cause mortality. However, that study did not measure step rate.

Clinicians can emphasize that health benefits do not require an hour-long exercise routine and special equipment, and moving more, even in shorts bursts of activity can have meaningful associations with health, particularly for those who are less active, she said.

The recent studies on short bursts of activity agree that “some physical activity is better than none and adults should move more throughout the day in whatever way makes sense to them and fits best into their lives,” said Dr. Paluch. “For example, opting for the stairs instead of the elevator, a brisk walk to the bus stop, a short game of hide and seek with the children or grandchildren – anything that gets your body moving more, even if briefly. Making simple lifestyle changes is often easier in small bites. In time, this can grow into long-term habits, ultimately leading to an overall active lifestyle that supports living healthier for longer.”

The Nature Medicine study was supported by the Australian National Health and Medical Research Council. Several coauthors were supported by the Wellcome Trust, the National Institute for Health Research Oxford Biomedical Research Centre, Novo Nordisk, the British Heart Foundation Centre of Research Excellence, the Alan Turing Institute, the British Heart Foundation, and Health Data Research UK, an initiative funded by UK Research and Innovation. Dr. Paluch and Dr. Stoner had no financial conflicts to disclose.

Short bursts of activity are approximately as effective for general health as longer sessions, especially for those who are mainly sedentary, according to several recently published studies.

If your fitness goals are greater, and you want to build muscle strength and endurance, compete in a 5K, or just look better in your swimsuit, you will need to do more. But for basic health, it appears that short bursts can help, the new research papers and experts suggest.

“Whether you accumulate activity in many short bouts versus one extended bout, the general health benefits tend to be similar,” Amanda Paluch, PhD, a physical activity epidemiologist at the University of Massachusetts, Amherst, said in an interview.

Current public health recommendations from the Centers for Disease Control and Prevention suggest doing at least 150 minutes of moderate intensity physical activity per week for health benefits, but this activity can be accumulated in any way over the week, she noted. Previous versions of the CDC guidelines on exercise suggested that physical activity bouts should be at least 10 minutes each, but the latest version of the guidelines acknowledges that bursts of less than 10 minutes may be beneficial.

However, “the activity or fitness level at which someone starts and the specific health goals matter,” Dr. Paluch continued. “Short bouts may be particularly beneficial for those least active to get moving more to improve their general wellness.”

The current federal physical activity guidelines are still worth striving for, and patients can work their way to this goal, accumulating 150 or more minutes in a way that works best for them, she added.

“There is a lack of research directly comparing individuals who consistently accumulate their activity in many short bouts versus single bouts over an extended period of time,” Dr. Paluch noted. From a public health perspective, since both short and long bouts have health benefits, the best physical activity is what fits into your life and helps build a lifelong habit.

The benefits of exercise for cardiovascular health are well documented. A review from Circulation published in 2003 summarized the benefits of regular physical activity on measures of cardiovascular health including reduction in body weight, blood pressure, and bad cholesterol, while increasing insulin sensitivity, good cholesterol, and muscular strength and function. In that review, author Jonathan N. Myers, PhD, now of Stanford (Calif.) University, noted that “one need not be a marathon runner or an elite athlete to derive significant benefits from physical activity.” In fact, “the greatest gains in terms of mortality are achieved when an individual goes from being sedentary to becoming moderately active.”

A recent large, population-based study showed the value of short bursts of exercise for those previously sedentary. In this study, published in Nature Medicine, a team in Australia used wearable fitness trackers to measure the health benefits of what researchers have named “vigorous intermittent lifestyle physical activity” or VILPA.

Some examples of VILPA include power walking on the way to work, climbing stairs, or even running around with your kids on the playground.

Specifically, individuals who engaged in the median VILPA frequency of three bursts of vigorous activity lasting 1-2 minutes showed a 38%-40% reduction in all-cause mortality risk and cancer mortality risk, and a 48%-49% reduction in cardiovascular mortality risk.

The researchers repeated their analysis for a group of 62,344 adults from the UK Biobank who reported regular vigorous physical activity (VPA). They found similar effects on mortality, based on 1,552 deaths reported.

These results suggest that VILPA may be a reasonable physical activity target, especially for people not able or willing to exercise more formally or intensely, the researchers noted.

“We have known for a long time that leisure-time exercise often reaches vigorous intensity and has many health benefits, but we understand less about the health potential of daily movement, especially activities done as part of daily living that reach vigorous intensity,” lead author Emmanuel Stamatakis, PhD, professor of physical activity, lifestyle and population health at the University of Sydney’s Charles Perkins Centre, said in an interview.

“As long as the heart rate goes up for a minute or 2 it will likely be vigorous activity,” Dr. Stamatakis said in an interview. “It is also important that clinicians effectively communicate how patients can know that they are reaching vigorous intensity,” he said.

Signs of vigorous intensity include increased heart rate and getting out of breath after about 20-40 seconds from the start of the VILPA burst. After about a minute of VILPA, the person doing it should be too out of breath to speak more than a few words comfortably, he said.
 

Data support value of any and all exercise

The Nature Medicine study supports other recent research showing the value of short, intense bursts of physical activity. A pair of recent studies also used fitness trackers to measure activity in adults and assess the benefits on outcomes including death and heart disease.

One of these studies, which was published in the European Heart Journal, also used fitness trackers to measure physical activity at moderate and vigorous levels. The researchers found that individuals who performed at least 20% of their physical activity at a moderate to high level, such as by doing brisk walking in lieu of strolling had a significantly lower risk of heart disease than those whose daily activity included less than 20% at a moderate or intense level.

In another study from the European Heart Journal, researchers found that short bursts of vigorous physical activity of 2 minutes or less adding up to 15-20 minutes per week was enough to reduce mortality by as much as 40%.

Plus, a meta-analysis published in the Lancet showed a decrease in all-cause mortality with an increase in the number of daily steps, although the impact of stepping rate on mortality was inconsistent.

“Many studies have investigated the health benefits of physical activity, but not the importance of these difficult-to-capture VILPA bouts that accrue during the course of normal activities of daily living,” Lee Stoner, PhD, an exercise physiologist and director of the Cardiometabolic Lab at the University of North Carolina at Chapel Hill, said in an interview.

Dr. Stoner, who was not involved in the Nature Medicine study, said he was not surprised by the overall finding that doing short bursts of activity impacted mortality and cardiovascular disease, but was slightly surprised by the strength of the evidence.

“The referent group in the Nature Medicine study were those accruing no VILPA”, likely meaning they were very inactive,” Dr. Stoner said and added that he thinks this demonstrates the value of VILPA.

Even without immediately meeting the specific numbers recommended by the CDC, “any physical activity is better than none, especially if vigorous, and VILPA can be built into normal daily routines,” Dr. Stoner added.
 

What’s missing in short bursts?

Short bursts of activity do have their limits when it comes to overall fitness, said Dr. Stoner.

“Endurance will not be improved as much through short bursts, because such activities are unlikely to be as effective at empowering the mitochondria – the batteries keeping our cells running, including skeletal muscle cells,” he said. “Additionally, the vigorous bouts are unlikely to be as effective at improving muscular strength and endurance. For this, it is recommended that we engage each muscle group in strengthening exercises two times per week.”

However, Dr. Stoner agreed that prescribing short bursts of intense activity as part of daily living may be a great way to get people started with exercise.

“The key is to remove barriers to physical activity pursuit, then focusing on long-term routine rather than short-term gain,” he said. “Individuals are better served if they focus on goals other than weight loss, for which physical activity or exercise may not be the solution. Rather, being physically active can improve vigor, make daily activities simpler, and improve cognitive abilities,” and any physical activity is one of the most effective solutions for regulating blood glucose levels and improving cardiovascular risk factors.
 

Make it routine – and fun

To benefit from physical activity, cultivating and sustaining a long-term routine is key, said Dr. Stoner, whose research has focused on sedentary behavior and cardiovascular disease. Whatever the activity is, shorter bursts, or longer bouts or both, it is essential that individuals figure out activities that they enjoy if they want to create sustained behavior, and thus health change, Gabriel Zieff, MA, a doctoral candidate in Dr. Stoner’s Cardiometabolic Lab, who conducts studies on exercise, noted in an interview.

“We exercise enthusiasts and researchers are often hyperfocused on whether this duration or that duration is better, whether this intensity or that intensity is better,” but at the end of the day, it is the enjoyment factor that often predicts sustained behavior change, and should be part of discussions with patients to help reduce sedentary behavior and promote activity, Mr. Zieff said.
 

Short bouts can encourage hesitant exercisers

“To best support health, clinicians should consider taking a few seconds to ask patients about their physical activity levels,” said Dr. Paluch, who was the lead author on the Lancet meta-analysis of daily steps. In that study, Dr. Paluch and colleagues found that taking more steps each day was associated with a progressively lower risk of all-cause mortality. However, that study did not measure step rate.

Clinicians can emphasize that health benefits do not require an hour-long exercise routine and special equipment, and moving more, even in shorts bursts of activity can have meaningful associations with health, particularly for those who are less active, she said.

The recent studies on short bursts of activity agree that “some physical activity is better than none and adults should move more throughout the day in whatever way makes sense to them and fits best into their lives,” said Dr. Paluch. “For example, opting for the stairs instead of the elevator, a brisk walk to the bus stop, a short game of hide and seek with the children or grandchildren – anything that gets your body moving more, even if briefly. Making simple lifestyle changes is often easier in small bites. In time, this can grow into long-term habits, ultimately leading to an overall active lifestyle that supports living healthier for longer.”

The Nature Medicine study was supported by the Australian National Health and Medical Research Council. Several coauthors were supported by the Wellcome Trust, the National Institute for Health Research Oxford Biomedical Research Centre, Novo Nordisk, the British Heart Foundation Centre of Research Excellence, the Alan Turing Institute, the British Heart Foundation, and Health Data Research UK, an initiative funded by UK Research and Innovation. Dr. Paluch and Dr. Stoner had no financial conflicts to disclose.