Acute Coronary Syndromes

NATIONAL HARBOR, MD. – If positive, a major ongoing phase 3 trial of CSL112, an agent designed to promote efflux of cholesterol from macrophages, is positioned to prove the HDL hypothesis, according to an outline of the rationale of the trial at CRT 2020 sponsored by MedStar Heart & Vascular Institute.

“Twenty papers now show better efflux means better outcomes independent of standard risk factors” and “we know this drug improves efflux,” explained C. Michael Gibson, MD, an interventional cardiologist at Beth Israel Deaconess Hospital, Boston.

The HDL hypothesis was derived from the Framingham Heart Study, which correlated high levels of HDL cholesterol with a reduced risk of adverse cardiovascular (CV) outcomes, according to Dr. Gibson. Just as elevated LDL proved to be a treatable risk factor for CV events, reduced HDL was the target of numerous trials to achieve the same types of benefits.

All have failed.

The problem has been in seeing HDL as a number without addressing its function, Dr. Gibson said. In essence, he believes “the HDL hypothesis not been really tested to date.”

CSL112 is a novel formulation of apolipoprotein A-1 (apoA-1) that has been purified from human plasma and reconstituted to form HDL. In the experimental and clinical setting, including the AEGIS I pilot study, weekly infusions of CSL112 have been associated with a degree of cholesterol efflux that predicts major CV risk reductions.

At the same time that the multinational event-driven AEGIS II trial will determine whether cholesterol efflux with CSL112 does translate into protection from CV events, it will also examine the HDL side of the lipid equation. Dr. Gibson said that it is specifically designed to circumvent the weaknesses of previous efforts to target HDL for reducing CV risk.

“The previous studies were conducted in the wrong patients with the wrong drugs given in the wrong doses at the wrong times,” said Dr. Gibson, who is also professor of medicine at Harvard Medical School, Boston.

One major difference from previous trials is that AEGIS II is enrolling patients with an acute coronary syndrome rather than stable atherosclerosis. Many of those being enrolled have had a recent event. Also, rather than raising HDL, the goal of CSL112 is to increase cholesterol efflux, which is now considered to be the key function of HDL. Furthermore, the time frame for the primary outcome, which is a composite of major adverse cardiac outcomes (MACE), is 90 days rather than several years.

In patients with ACS, “it is the early period of vulnerability where efflux of cholesterol really appears to have the greatest influence on outcomes,” Dr. Gibson explained.

The failure of previous efforts to treat HDL now appears to be based on an incomplete understanding of the goals, according to Dr. Gibson. The doomed cholesteryl ester transfer protein (CETP) drugs, for example, effectively increased HDL levels, but generated a form of HDL that “was not all that functional.”

He noted that niacin raises HDL but has off-target effects. Apo-A1 Milano, a mutant variation of apo-A1, is now understood to reduce the endogenous form, which Dr. Gibson said might explain its counterproductive effect on CV protection.

Using a garbage truck analogy to explain the growing appreciation of factors involved in cholesterol accumulation in the macrophage, Dr. Gibson characterized ABCA1, a transporter protein sitting on the surface of the macrophage, as the loader. He described LCAT (lecithin-cholesterol acyltransferase), an enzyme that converts cholesterol into cholesteryl ester, as the compactor. He sees CRL112 as an empty garbage truck sent into the macrophage to reverse the process.

“We are moving beyond thinking of HDL as a number to try to better appreciate its function,” Dr. Gibson said.

The AEGIS II trial was opened in March of 2018. It has a planned enrollment of 17,400 patients, with an estimated completion date of October 2021.

Dr. Gibson reports financial relationships with Bayer, Janssen, Johnson & Johnson, and CSL Behring, the sponsor of the AEGIS II trial.

NATIONAL HARBOR, MD. – If positive, a major ongoing phase 3 trial of CSL112, an agent designed to promote efflux of cholesterol from macrophages, is positioned to prove the HDL hypothesis, according to an outline of the rationale of the trial at CRT 2020 sponsored by MedStar Heart & Vascular Institute.

“Twenty papers now show better efflux means better outcomes independent of standard risk factors” and “we know this drug improves efflux,” explained C. Michael Gibson, MD, an interventional cardiologist at Beth Israel Deaconess Hospital, Boston.

The HDL hypothesis was derived from the Framingham Heart Study, which correlated high levels of HDL cholesterol with a reduced risk of adverse cardiovascular (CV) outcomes, according to Dr. Gibson. Just as elevated LDL proved to be a treatable risk factor for CV events, reduced HDL was the target of numerous trials to achieve the same types of benefits.

All have failed.

The problem has been in seeing HDL as a number without addressing its function, Dr. Gibson said. In essence, he believes “the HDL hypothesis not been really tested to date.”

CSL112 is a novel formulation of apolipoprotein A-1 (apoA-1) that has been purified from human plasma and reconstituted to form HDL. In the experimental and clinical setting, including the AEGIS I pilot study, weekly infusions of CSL112 have been associated with a degree of cholesterol efflux that predicts major CV risk reductions.

At the same time that the multinational event-driven AEGIS II trial will determine whether cholesterol efflux with CSL112 does translate into protection from CV events, it will also examine the HDL side of the lipid equation. Dr. Gibson said that it is specifically designed to circumvent the weaknesses of previous efforts to target HDL for reducing CV risk.

“The previous studies were conducted in the wrong patients with the wrong drugs given in the wrong doses at the wrong times,” said Dr. Gibson, who is also professor of medicine at Harvard Medical School, Boston.

One major difference from previous trials is that AEGIS II is enrolling patients with an acute coronary syndrome rather than stable atherosclerosis. Many of those being enrolled have had a recent event. Also, rather than raising HDL, the goal of CSL112 is to increase cholesterol efflux, which is now considered to be the key function of HDL. Furthermore, the time frame for the primary outcome, which is a composite of major adverse cardiac outcomes (MACE), is 90 days rather than several years.

In patients with ACS, “it is the early period of vulnerability where efflux of cholesterol really appears to have the greatest influence on outcomes,” Dr. Gibson explained.

The failure of previous efforts to treat HDL now appears to be based on an incomplete understanding of the goals, according to Dr. Gibson. The doomed cholesteryl ester transfer protein (CETP) drugs, for example, effectively increased HDL levels, but generated a form of HDL that “was not all that functional.”

He noted that niacin raises HDL but has off-target effects. Apo-A1 Milano, a mutant variation of apo-A1, is now understood to reduce the endogenous form, which Dr. Gibson said might explain its counterproductive effect on CV protection.

Using a garbage truck analogy to explain the growing appreciation of factors involved in cholesterol accumulation in the macrophage, Dr. Gibson characterized ABCA1, a transporter protein sitting on the surface of the macrophage, as the loader. He described LCAT (lecithin-cholesterol acyltransferase), an enzyme that converts cholesterol into cholesteryl ester, as the compactor. He sees CRL112 as an empty garbage truck sent into the macrophage to reverse the process.

“We are moving beyond thinking of HDL as a number to try to better appreciate its function,” Dr. Gibson said.

The AEGIS II trial was opened in March of 2018. It has a planned enrollment of 17,400 patients, with an estimated completion date of October 2021.

Dr. Gibson reports financial relationships with Bayer, Janssen, Johnson & Johnson, and CSL Behring, the sponsor of the AEGIS II trial.

NATIONAL HARBOR, MD. – If positive, a major ongoing phase 3 trial of CSL112, an agent designed to promote efflux of cholesterol from macrophages, is positioned to prove the HDL hypothesis, according to an outline of the rationale of the trial at CRT 2020 sponsored by MedStar Heart & Vascular Institute.

“Twenty papers now show better efflux means better outcomes independent of standard risk factors” and “we know this drug improves efflux,” explained C. Michael Gibson, MD, an interventional cardiologist at Beth Israel Deaconess Hospital, Boston.

The HDL hypothesis was derived from the Framingham Heart Study, which correlated high levels of HDL cholesterol with a reduced risk of adverse cardiovascular (CV) outcomes, according to Dr. Gibson. Just as elevated LDL proved to be a treatable risk factor for CV events, reduced HDL was the target of numerous trials to achieve the same types of benefits.

All have failed.

The problem has been in seeing HDL as a number without addressing its function, Dr. Gibson said. In essence, he believes “the HDL hypothesis not been really tested to date.”

CSL112 is a novel formulation of apolipoprotein A-1 (apoA-1) that has been purified from human plasma and reconstituted to form HDL. In the experimental and clinical setting, including the AEGIS I pilot study, weekly infusions of CSL112 have been associated with a degree of cholesterol efflux that predicts major CV risk reductions.

At the same time that the multinational event-driven AEGIS II trial will determine whether cholesterol efflux with CSL112 does translate into protection from CV events, it will also examine the HDL side of the lipid equation. Dr. Gibson said that it is specifically designed to circumvent the weaknesses of previous efforts to target HDL for reducing CV risk.

“The previous studies were conducted in the wrong patients with the wrong drugs given in the wrong doses at the wrong times,” said Dr. Gibson, who is also professor of medicine at Harvard Medical School, Boston.

One major difference from previous trials is that AEGIS II is enrolling patients with an acute coronary syndrome rather than stable atherosclerosis. Many of those being enrolled have had a recent event. Also, rather than raising HDL, the goal of CSL112 is to increase cholesterol efflux, which is now considered to be the key function of HDL. Furthermore, the time frame for the primary outcome, which is a composite of major adverse cardiac outcomes (MACE), is 90 days rather than several years.

In patients with ACS, “it is the early period of vulnerability where efflux of cholesterol really appears to have the greatest influence on outcomes,” Dr. Gibson explained.

The failure of previous efforts to treat HDL now appears to be based on an incomplete understanding of the goals, according to Dr. Gibson. The doomed cholesteryl ester transfer protein (CETP) drugs, for example, effectively increased HDL levels, but generated a form of HDL that “was not all that functional.”

He noted that niacin raises HDL but has off-target effects. Apo-A1 Milano, a mutant variation of apo-A1, is now understood to reduce the endogenous form, which Dr. Gibson said might explain its counterproductive effect on CV protection.

Using a garbage truck analogy to explain the growing appreciation of factors involved in cholesterol accumulation in the macrophage, Dr. Gibson characterized ABCA1, a transporter protein sitting on the surface of the macrophage, as the loader. He described LCAT (lecithin-cholesterol acyltransferase), an enzyme that converts cholesterol into cholesteryl ester, as the compactor. He sees CRL112 as an empty garbage truck sent into the macrophage to reverse the process.

“We are moving beyond thinking of HDL as a number to try to better appreciate its function,” Dr. Gibson said.

The AEGIS II trial was opened in March of 2018. It has a planned enrollment of 17,400 patients, with an estimated completion date of October 2021.

Dr. Gibson reports financial relationships with Bayer, Janssen, Johnson & Johnson, and CSL Behring, the sponsor of the AEGIS II trial.

Changes in gut microbiota linked to red meat intake over time were significantly associated with increased risk of coronary heart disease, regardless of baseline microbiota measures, based on data from 760 participants in the Nurses’ Health Study.

“A gut microbiota–related metabolite, trimethylamine N-oxide (TMAO), has been related to risks of major adverse cardiovascular events including myocardial infarction and coronary heart disease (CHD) in epidemiological studies,” but previous studies have not examined the impact of long-term changes in TMAO on CHD risk, wrote Yoriko Heianza, RD, PhD, of Tulane University, New Orleans, and colleagues.

Red meat has been shown to increase TMAO levels, whereas discontinuation of red meat intake reduced plasma TMAO levels (Eur Heart J 2019;40:583-94), the investigators wrote.

In their study, published in the Journal of the American College of Cardiology, the researchers evaluated blood samples from 760 women who were participants in the Nurses’ Health Study. The samples were collected at two time points: 1989-1990 and 2000-2002. The researchers identified 360 incident cases of CHD over the study period and compared them with matched controls.

Over roughly 10 years, increases in TMAO over time were significantly associated with increased CHD risk, with a relative risk of 1.58 for the top tertile and a relative risk of 1.33 per each standard deviation.

Women with elevated levels of TMAO both at baseline and at the 10-year point had the highest CHD risk (relative risk 1.79), compared with women with low TMAO levels at baseline and 10 years later.

The researchers also found an impact of diet on the TMAO-CHD relationship. Individuals with unhealthy eating patterns based on the Alternate Healthy Eating Index showed greater increases in TMAO and greater CHD risk. By contrast, greater adherence to healthy eating habits attenuated the impact of TMAO and CHD.

The study findings were limited by several factors, including the inability to assess the timing of the changes in the metabolites that contributed to CHD, the reliance on self-reports for dietary patterns and other variables, and the inclusion only of women health professionals in the study population, the researchers noted. However, the results were strengthened by the availability of long-term blood samples and a patient population free of disease at baseline.

In addition, “adherence to healthy dietary patterns may modulate the adverse relationship between TMAO changes and CHD, suggesting that TMAO as a potential intermediate endpoint of interventions focusing on dietary modifications for CHD prevention,” the researchers wrote.

“The findings of the study provide further evidence for the role of TMAO as a predictive biomarker for atherosclerotic heart disease and strengthen the case for TMAO as a potential intervention target in CV [cardiovascular] disease prevention,” wrote Paul A. Heidenreich, MD, and Petra Mamic, MD, of Stanford (Calif.) University, in an accompanying editorial.

In addition, “It is increasingly clear that GMB [gut microbiota] metabolites have biological activity, and that dietary changes alter the GMB and its metabolic output, with subsequent modulation of downstream host effects,” they wrote.

“While acknowledging the limitations of self-reported dietary pattern assessment, this is an important finding because it suggests that healthy dietary patterns may in some ways neutralize TMAO’s harmful effects on the CV system, potentially through other identified and unidentified GMB-mediated pathways,” they added.

The study was sponsored in part by the National Institutes of Health, the Boston Obesity Nutrition Research Center, and the United States–Israel Binational Science Foundation. Neither the researchers nor the editorialists had any financial conflicts to disclose.

SOURCES: Heianza Y et al. J Am Coll Cardiol. 2020 Feb 17. doi: 0.1016/j.jacc.2019.11.060; Heidenreich PA, Mamic P. J Am Coll Cardiol. 2020 Feb 17. doi: 10.1016/j.jacc.2019.12.023.

Changes in gut microbiota linked to red meat intake over time were significantly associated with increased risk of coronary heart disease, regardless of baseline microbiota measures, based on data from 760 participants in the Nurses’ Health Study.

“A gut microbiota–related metabolite, trimethylamine N-oxide (TMAO), has been related to risks of major adverse cardiovascular events including myocardial infarction and coronary heart disease (CHD) in epidemiological studies,” but previous studies have not examined the impact of long-term changes in TMAO on CHD risk, wrote Yoriko Heianza, RD, PhD, of Tulane University, New Orleans, and colleagues.

Red meat has been shown to increase TMAO levels, whereas discontinuation of red meat intake reduced plasma TMAO levels (Eur Heart J 2019;40:583-94), the investigators wrote.

In their study, published in the Journal of the American College of Cardiology, the researchers evaluated blood samples from 760 women who were participants in the Nurses’ Health Study. The samples were collected at two time points: 1989-1990 and 2000-2002. The researchers identified 360 incident cases of CHD over the study period and compared them with matched controls.

Over roughly 10 years, increases in TMAO over time were significantly associated with increased CHD risk, with a relative risk of 1.58 for the top tertile and a relative risk of 1.33 per each standard deviation.

Women with elevated levels of TMAO both at baseline and at the 10-year point had the highest CHD risk (relative risk 1.79), compared with women with low TMAO levels at baseline and 10 years later.

The researchers also found an impact of diet on the TMAO-CHD relationship. Individuals with unhealthy eating patterns based on the Alternate Healthy Eating Index showed greater increases in TMAO and greater CHD risk. By contrast, greater adherence to healthy eating habits attenuated the impact of TMAO and CHD.

The study findings were limited by several factors, including the inability to assess the timing of the changes in the metabolites that contributed to CHD, the reliance on self-reports for dietary patterns and other variables, and the inclusion only of women health professionals in the study population, the researchers noted. However, the results were strengthened by the availability of long-term blood samples and a patient population free of disease at baseline.

In addition, “adherence to healthy dietary patterns may modulate the adverse relationship between TMAO changes and CHD, suggesting that TMAO as a potential intermediate endpoint of interventions focusing on dietary modifications for CHD prevention,” the researchers wrote.

“The findings of the study provide further evidence for the role of TMAO as a predictive biomarker for atherosclerotic heart disease and strengthen the case for TMAO as a potential intervention target in CV [cardiovascular] disease prevention,” wrote Paul A. Heidenreich, MD, and Petra Mamic, MD, of Stanford (Calif.) University, in an accompanying editorial.

In addition, “It is increasingly clear that GMB [gut microbiota] metabolites have biological activity, and that dietary changes alter the GMB and its metabolic output, with subsequent modulation of downstream host effects,” they wrote.

“While acknowledging the limitations of self-reported dietary pattern assessment, this is an important finding because it suggests that healthy dietary patterns may in some ways neutralize TMAO’s harmful effects on the CV system, potentially through other identified and unidentified GMB-mediated pathways,” they added.

The study was sponsored in part by the National Institutes of Health, the Boston Obesity Nutrition Research Center, and the United States–Israel Binational Science Foundation. Neither the researchers nor the editorialists had any financial conflicts to disclose.

SOURCES: Heianza Y et al. J Am Coll Cardiol. 2020 Feb 17. doi: 0.1016/j.jacc.2019.11.060; Heidenreich PA, Mamic P. J Am Coll Cardiol. 2020 Feb 17. doi: 10.1016/j.jacc.2019.12.023.

Changes in gut microbiota linked to red meat intake over time were significantly associated with increased risk of coronary heart disease, regardless of baseline microbiota measures, based on data from 760 participants in the Nurses’ Health Study.

“A gut microbiota–related metabolite, trimethylamine N-oxide (TMAO), has been related to risks of major adverse cardiovascular events including myocardial infarction and coronary heart disease (CHD) in epidemiological studies,” but previous studies have not examined the impact of long-term changes in TMAO on CHD risk, wrote Yoriko Heianza, RD, PhD, of Tulane University, New Orleans, and colleagues.

Red meat has been shown to increase TMAO levels, whereas discontinuation of red meat intake reduced plasma TMAO levels (Eur Heart J 2019;40:583-94), the investigators wrote.

In their study, published in the Journal of the American College of Cardiology, the researchers evaluated blood samples from 760 women who were participants in the Nurses’ Health Study. The samples were collected at two time points: 1989-1990 and 2000-2002. The researchers identified 360 incident cases of CHD over the study period and compared them with matched controls.

Over roughly 10 years, increases in TMAO over time were significantly associated with increased CHD risk, with a relative risk of 1.58 for the top tertile and a relative risk of 1.33 per each standard deviation.

Women with elevated levels of TMAO both at baseline and at the 10-year point had the highest CHD risk (relative risk 1.79), compared with women with low TMAO levels at baseline and 10 years later.

The researchers also found an impact of diet on the TMAO-CHD relationship. Individuals with unhealthy eating patterns based on the Alternate Healthy Eating Index showed greater increases in TMAO and greater CHD risk. By contrast, greater adherence to healthy eating habits attenuated the impact of TMAO and CHD.

The study findings were limited by several factors, including the inability to assess the timing of the changes in the metabolites that contributed to CHD, the reliance on self-reports for dietary patterns and other variables, and the inclusion only of women health professionals in the study population, the researchers noted. However, the results were strengthened by the availability of long-term blood samples and a patient population free of disease at baseline.

In addition, “adherence to healthy dietary patterns may modulate the adverse relationship between TMAO changes and CHD, suggesting that TMAO as a potential intermediate endpoint of interventions focusing on dietary modifications for CHD prevention,” the researchers wrote.

“The findings of the study provide further evidence for the role of TMAO as a predictive biomarker for atherosclerotic heart disease and strengthen the case for TMAO as a potential intervention target in CV [cardiovascular] disease prevention,” wrote Paul A. Heidenreich, MD, and Petra Mamic, MD, of Stanford (Calif.) University, in an accompanying editorial.

In addition, “It is increasingly clear that GMB [gut microbiota] metabolites have biological activity, and that dietary changes alter the GMB and its metabolic output, with subsequent modulation of downstream host effects,” they wrote.

“While acknowledging the limitations of self-reported dietary pattern assessment, this is an important finding because it suggests that healthy dietary patterns may in some ways neutralize TMAO’s harmful effects on the CV system, potentially through other identified and unidentified GMB-mediated pathways,” they added.

The study was sponsored in part by the National Institutes of Health, the Boston Obesity Nutrition Research Center, and the United States–Israel Binational Science Foundation. Neither the researchers nor the editorialists had any financial conflicts to disclose.

SOURCES: Heianza Y et al. J Am Coll Cardiol. 2020 Feb 17. doi: 0.1016/j.jacc.2019.11.060; Heidenreich PA, Mamic P. J Am Coll Cardiol. 2020 Feb 17. doi: 10.1016/j.jacc.2019.12.023.

Clinical trials supporting Food and Drug Adminstration approval of contemporary cancer therapies frequently failed to capture major adverse cardiovascular events (MACE) and, when they did, reported rates 2.6-fold lower than noncancer trials, new research shows.

Overall, 51.3% of trials did not report MACE, with that number reaching 57.6% in trials enrolling patients with baseline cardiovascular disease (CVD).

Nearly 40% of trials did not report any CVD events in follow-up, the authors reported online Feb. 10, 2020, in the Journal of the American College of Cardiology (2020;75:620-8).

“Even in drug classes where there were established or emerging associations with cardiotoxic events, often there were no reported heart events or cardiovascular events across years of follow-up in trials that examined hundreds or even thousands of patients. That was actually pretty surprising,” senior author Daniel Addison, MD, codirector of the cardio-oncology program at the Ohio State University Medical Center, Columbus, said in an interview.

The study was prompted by a series of events that crescendoed when his team was called to the ICU to determine whether a novel targeted agent played a role in the heart decline of a patient with acute myeloid leukemia. “I had a resident ask me a very important question: ‘How do we really know for sure that the trial actually reflects the true risk of heart events?’ to which I told him, ‘it’s difficult to know,’ ” he said.

“I think many of us rely heavily on what we see in the trials, particularly when they make it to the top journals, and quite frankly, we generally take it at face value,” Dr. Addison observed.
 

Lower Rate of Reported Events

The investigators reviewed CV events reported in 97,365 patients (median age, 61 years; 46% female) enrolled in 189 phase 2 and 3 trials supporting FDA approval of 123 anticancer drugs from 1998 to 2018. Biologic, targeted, or immune-based therapies accounted for 72.5% of drug approvals.

Over 148,138 person-years of follow-up (median trial duration, 30 months), there were 1,148 incidents of MACE (375 heart failure, 253 MIs, 180 strokes, 65 atrial fibrillation, 29 coronary revascularizations, and 246 CVD deaths). MACE rates were higher in the intervention group than in the control group (792 vs. 356; P less than .01). Among the 64 trials that excluded patients with baseline CVD, there were 269 incidents of MACE.

To put this finding in context, the researchers examined the reported incidence of MACE among some 6,000 similarly aged participants in the Multi-Ethnic Study of Atherosclerosis (MESA). The overall weighted-average incidence rate was 1,408 per 100,000 person-years among MESA participants, compared with 542 events per 100,000 person-years among oncology trial participants (716 per 100,000 in the intervention arm). This represents a reported-to-expected ratio of 0.38 – a 2.6-fold lower rate of reported events (P less than .001) – and a risk difference of 866.

Further, MACE reporting was lower by a factor of 1.7 among all cancer trial participants irrespective of baseline CVD status (reported-to-expected ratio, 0.56; risk difference, 613; P less than .001).

There was no significant difference in MACE reporting between independent or industry-sponsored trials, the authors report.
 

No malicious intent

“There are likely some that might lean toward not wanting to attribute blame to a new drug when the drug is in a study, but I really think that the leading factor is lack of awareness,” Dr. Addison said. “I’ve talked with several cancer collaborators around the country who run large clinical trials, and I think often, when an event may be brought to someone’s attention, there is a tendency to just write it off as kind of a generic expected event due to age, or just something that’s not really pertinent to the study. So they don’t really focus on it as much.”

“Closer collaboration between cardiologists and cancer physicians is needed to better determine true cardiac risks among patients treated with these drugs.”

Breast cancer oncologist Marc E. Lippman, MD, of Georgetown University Medical Center and Georgetown Lombardi Comprehensive Cancer Center, Washington, D.C., isn’t convinced a lack of awareness is the culprit.

“I don’t agree with that at all,” he said in an interview. “I think there are very, very clear rules and guidelines these days for adverse-event reporting. I think that’s not a very likely explanation – that it’s not on the radar.”

Part of the problem may be that some of the toxicities, particularly cardiovascular, may not emerge for years, he said. Participant screening for the trials also likely removed patients with high cardiovascular risk. “It’s very understandable to me – I’m not saying it’s good particularly – but I think it’s very understandable that, if you’re trying to develop a drug, the last thing you’d want to have is a lot of toxicity that you might have avoided by just being restrictive in who you let into the study,” Dr. Lippman said.

The underreported CVD events may also reflect the rapidly changing profile of cardiovascular toxicities associated with novel anticancer therapies.

“Providers, both cancer and noncancer, generally put cardiotoxicity in the box of anthracyclines and radiation, but particularly over the last decade, we’ve begun to understand it’s well beyond any one class of drugs,” Dr. Addison said.

“I agree completely,” Dr. Lippman said. For example, “the checkpoint inhibitors are so unbelievably different in terms of their toxicities that many people simply didn’t even know what they were getting into at first.”
 

One size does not fit all

Javid Moslehi, MD, director of the cardio-oncology program at Vanderbilt University, Nashville, Tenn., said echocardiography – recommended to detect changes in left ventricular function in patients exposed to anthracyclines or targeted agents like trastuzumab (Herceptin) – isn’t enough to address today’s cancer therapy–related CVD events.

Courtesy Joe Howell

“Initial drugs like anthracyclines or Herceptin in cardio-oncology were associated with systolic cardiac dysfunction, whereas the majority of issues we see in the cardio-oncology clinics today are vascular, metabolic, arrhythmogenic, and inflammatory,” he said in an interview. “Echocardiography misses the big and increasingly complex picture.”

His group, for example, has been studying myocarditis associated with immunotherapies, but none of the clinical trials require screening or surveillance for myocarditis with a cardiac biomarker like troponin.

The group also recently identified 303 deaths in patients exposed to ibrutinib, a drug that revolutionized the treatment of several B-cell malignancies but is associated with higher rates of atrial fibrillation, which is also associated with increased bleeding risk. “So there’s a little bit of a double whammy there, given that we often treat atrial fibrillation with anticoagulation and where we can cause complications in patients,” Dr. Moslehi noted.

Although there needs to be closer collaboration between cardiologists and oncologists on individual trials, cardiologists also have to realize that oncology care has become very personalized, he suggested.

“What’s probably relevant for the breast cancer patient may not be relevant for the prostate cancer patient and their respective treatments,” Dr. Moslehi said. “So if we were to say, ‘every person should get an echo,’ that may be less relevant to the prostate cancer patient where treatments can cause vascular and metabolic perturbations or to the patient treated with immunotherapy who may have myocarditis, where many of the echos can be normal. There’s no one-size-fits-all for these things.”

Wearable technologies like smartwatches could play a role in improving the reporting of CVD events with novel therapies but a lot more research needs to be done to validate these tools, Dr. Addison said. “But as we continue on into the 21st century, this is going to expand and may potentially help us,” he added.

In the interim, better standardization is needed of the cardiovascular events reported in oncology trials, particularly the Common Terminology Criteria for Adverse Events (CTCAE), said Dr. Moslehi, who also serves as chair of the American Heart Association’s subcommittee on cardio-oncology.

“Cardiovascular definitions are not exactly uniform and are not consistent with what we in cardiology consider to be important or relevant,” he said. “So I think there needs to be better standardization of these definitions, specifically within the CTCAE, which is what the oncologists use to identify adverse events.”

In a linked editorial (J Am Coll Cardiol. 2020;75:629-31), Dr. Lippman and cardiologist Nanette Bishopric, MD, of the Medstar Heart and Vascular Institute in Washington, D.C., suggested it may also be time to organize a consortium that can carry out “rigorous multicenter clinical investigations to evaluate the cardiotoxicity of emerging cancer treatments,” similar to the Thrombosis in Myocardial Infarction Study Group.

“The success of this consortium in pioneering and targeting multiple generations of drugs for the treatment of MI, involving tens of thousands of patients and thousands of collaborations across multiple national borders, is a model for how to move forward in providing the new hope of cancer cure without the trade-off of years lost to heart disease,” the editorialists concluded.

The study was supported in part by National Institutes of Health grants, including a K12-CA133250 grant to Dr. Addison. Dr. Bishopric reported being on the scientific board of C&C Biopharma. Dr. Lippman reports being on the board of directors of and holding stock in Seattle Genetics. Dr. Moslehi reported having served on advisory boards for Pfizer, Novartis, Bristol-Myers Squibb, Deciphera, Audentes Pharmaceuticals, Nektar, Takeda, Ipsen, Myokardia, AstraZeneca, GlaxoSmithKline, Intrexon, and Regeneron.

This article first appeared on Medscape.com.

Clinical trials supporting Food and Drug Adminstration approval of contemporary cancer therapies frequently failed to capture major adverse cardiovascular events (MACE) and, when they did, reported rates 2.6-fold lower than noncancer trials, new research shows.

Overall, 51.3% of trials did not report MACE, with that number reaching 57.6% in trials enrolling patients with baseline cardiovascular disease (CVD).

Nearly 40% of trials did not report any CVD events in follow-up, the authors reported online Feb. 10, 2020, in the Journal of the American College of Cardiology (2020;75:620-8).

“Even in drug classes where there were established or emerging associations with cardiotoxic events, often there were no reported heart events or cardiovascular events across years of follow-up in trials that examined hundreds or even thousands of patients. That was actually pretty surprising,” senior author Daniel Addison, MD, codirector of the cardio-oncology program at the Ohio State University Medical Center, Columbus, said in an interview.

The study was prompted by a series of events that crescendoed when his team was called to the ICU to determine whether a novel targeted agent played a role in the heart decline of a patient with acute myeloid leukemia. “I had a resident ask me a very important question: ‘How do we really know for sure that the trial actually reflects the true risk of heart events?’ to which I told him, ‘it’s difficult to know,’ ” he said.

“I think many of us rely heavily on what we see in the trials, particularly when they make it to the top journals, and quite frankly, we generally take it at face value,” Dr. Addison observed.
 

Lower Rate of Reported Events

The investigators reviewed CV events reported in 97,365 patients (median age, 61 years; 46% female) enrolled in 189 phase 2 and 3 trials supporting FDA approval of 123 anticancer drugs from 1998 to 2018. Biologic, targeted, or immune-based therapies accounted for 72.5% of drug approvals.

Over 148,138 person-years of follow-up (median trial duration, 30 months), there were 1,148 incidents of MACE (375 heart failure, 253 MIs, 180 strokes, 65 atrial fibrillation, 29 coronary revascularizations, and 246 CVD deaths). MACE rates were higher in the intervention group than in the control group (792 vs. 356; P less than .01). Among the 64 trials that excluded patients with baseline CVD, there were 269 incidents of MACE.

To put this finding in context, the researchers examined the reported incidence of MACE among some 6,000 similarly aged participants in the Multi-Ethnic Study of Atherosclerosis (MESA). The overall weighted-average incidence rate was 1,408 per 100,000 person-years among MESA participants, compared with 542 events per 100,000 person-years among oncology trial participants (716 per 100,000 in the intervention arm). This represents a reported-to-expected ratio of 0.38 – a 2.6-fold lower rate of reported events (P less than .001) – and a risk difference of 866.

Further, MACE reporting was lower by a factor of 1.7 among all cancer trial participants irrespective of baseline CVD status (reported-to-expected ratio, 0.56; risk difference, 613; P less than .001).

There was no significant difference in MACE reporting between independent or industry-sponsored trials, the authors report.
 

No malicious intent

“There are likely some that might lean toward not wanting to attribute blame to a new drug when the drug is in a study, but I really think that the leading factor is lack of awareness,” Dr. Addison said. “I’ve talked with several cancer collaborators around the country who run large clinical trials, and I think often, when an event may be brought to someone’s attention, there is a tendency to just write it off as kind of a generic expected event due to age, or just something that’s not really pertinent to the study. So they don’t really focus on it as much.”

“Closer collaboration between cardiologists and cancer physicians is needed to better determine true cardiac risks among patients treated with these drugs.”

Breast cancer oncologist Marc E. Lippman, MD, of Georgetown University Medical Center and Georgetown Lombardi Comprehensive Cancer Center, Washington, D.C., isn’t convinced a lack of awareness is the culprit.

“I don’t agree with that at all,” he said in an interview. “I think there are very, very clear rules and guidelines these days for adverse-event reporting. I think that’s not a very likely explanation – that it’s not on the radar.”

Part of the problem may be that some of the toxicities, particularly cardiovascular, may not emerge for years, he said. Participant screening for the trials also likely removed patients with high cardiovascular risk. “It’s very understandable to me – I’m not saying it’s good particularly – but I think it’s very understandable that, if you’re trying to develop a drug, the last thing you’d want to have is a lot of toxicity that you might have avoided by just being restrictive in who you let into the study,” Dr. Lippman said.

The underreported CVD events may also reflect the rapidly changing profile of cardiovascular toxicities associated with novel anticancer therapies.

“Providers, both cancer and noncancer, generally put cardiotoxicity in the box of anthracyclines and radiation, but particularly over the last decade, we’ve begun to understand it’s well beyond any one class of drugs,” Dr. Addison said.

“I agree completely,” Dr. Lippman said. For example, “the checkpoint inhibitors are so unbelievably different in terms of their toxicities that many people simply didn’t even know what they were getting into at first.”
 

One size does not fit all

Javid Moslehi, MD, director of the cardio-oncology program at Vanderbilt University, Nashville, Tenn., said echocardiography – recommended to detect changes in left ventricular function in patients exposed to anthracyclines or targeted agents like trastuzumab (Herceptin) – isn’t enough to address today’s cancer therapy–related CVD events.

Courtesy Joe Howell

“Initial drugs like anthracyclines or Herceptin in cardio-oncology were associated with systolic cardiac dysfunction, whereas the majority of issues we see in the cardio-oncology clinics today are vascular, metabolic, arrhythmogenic, and inflammatory,” he said in an interview. “Echocardiography misses the big and increasingly complex picture.”

His group, for example, has been studying myocarditis associated with immunotherapies, but none of the clinical trials require screening or surveillance for myocarditis with a cardiac biomarker like troponin.

The group also recently identified 303 deaths in patients exposed to ibrutinib, a drug that revolutionized the treatment of several B-cell malignancies but is associated with higher rates of atrial fibrillation, which is also associated with increased bleeding risk. “So there’s a little bit of a double whammy there, given that we often treat atrial fibrillation with anticoagulation and where we can cause complications in patients,” Dr. Moslehi noted.

Although there needs to be closer collaboration between cardiologists and oncologists on individual trials, cardiologists also have to realize that oncology care has become very personalized, he suggested.

“What’s probably relevant for the breast cancer patient may not be relevant for the prostate cancer patient and their respective treatments,” Dr. Moslehi said. “So if we were to say, ‘every person should get an echo,’ that may be less relevant to the prostate cancer patient where treatments can cause vascular and metabolic perturbations or to the patient treated with immunotherapy who may have myocarditis, where many of the echos can be normal. There’s no one-size-fits-all for these things.”

Wearable technologies like smartwatches could play a role in improving the reporting of CVD events with novel therapies but a lot more research needs to be done to validate these tools, Dr. Addison said. “But as we continue on into the 21st century, this is going to expand and may potentially help us,” he added.

In the interim, better standardization is needed of the cardiovascular events reported in oncology trials, particularly the Common Terminology Criteria for Adverse Events (CTCAE), said Dr. Moslehi, who also serves as chair of the American Heart Association’s subcommittee on cardio-oncology.

“Cardiovascular definitions are not exactly uniform and are not consistent with what we in cardiology consider to be important or relevant,” he said. “So I think there needs to be better standardization of these definitions, specifically within the CTCAE, which is what the oncologists use to identify adverse events.”

In a linked editorial (J Am Coll Cardiol. 2020;75:629-31), Dr. Lippman and cardiologist Nanette Bishopric, MD, of the Medstar Heart and Vascular Institute in Washington, D.C., suggested it may also be time to organize a consortium that can carry out “rigorous multicenter clinical investigations to evaluate the cardiotoxicity of emerging cancer treatments,” similar to the Thrombosis in Myocardial Infarction Study Group.

“The success of this consortium in pioneering and targeting multiple generations of drugs for the treatment of MI, involving tens of thousands of patients and thousands of collaborations across multiple national borders, is a model for how to move forward in providing the new hope of cancer cure without the trade-off of years lost to heart disease,” the editorialists concluded.

The study was supported in part by National Institutes of Health grants, including a K12-CA133250 grant to Dr. Addison. Dr. Bishopric reported being on the scientific board of C&C Biopharma. Dr. Lippman reports being on the board of directors of and holding stock in Seattle Genetics. Dr. Moslehi reported having served on advisory boards for Pfizer, Novartis, Bristol-Myers Squibb, Deciphera, Audentes Pharmaceuticals, Nektar, Takeda, Ipsen, Myokardia, AstraZeneca, GlaxoSmithKline, Intrexon, and Regeneron.

This article first appeared on Medscape.com.

Clinical trials supporting Food and Drug Adminstration approval of contemporary cancer therapies frequently failed to capture major adverse cardiovascular events (MACE) and, when they did, reported rates 2.6-fold lower than noncancer trials, new research shows.

Overall, 51.3% of trials did not report MACE, with that number reaching 57.6% in trials enrolling patients with baseline cardiovascular disease (CVD).

Nearly 40% of trials did not report any CVD events in follow-up, the authors reported online Feb. 10, 2020, in the Journal of the American College of Cardiology (2020;75:620-8).

“Even in drug classes where there were established or emerging associations with cardiotoxic events, often there were no reported heart events or cardiovascular events across years of follow-up in trials that examined hundreds or even thousands of patients. That was actually pretty surprising,” senior author Daniel Addison, MD, codirector of the cardio-oncology program at the Ohio State University Medical Center, Columbus, said in an interview.

The study was prompted by a series of events that crescendoed when his team was called to the ICU to determine whether a novel targeted agent played a role in the heart decline of a patient with acute myeloid leukemia. “I had a resident ask me a very important question: ‘How do we really know for sure that the trial actually reflects the true risk of heart events?’ to which I told him, ‘it’s difficult to know,’ ” he said.

“I think many of us rely heavily on what we see in the trials, particularly when they make it to the top journals, and quite frankly, we generally take it at face value,” Dr. Addison observed.
 

Lower Rate of Reported Events

The investigators reviewed CV events reported in 97,365 patients (median age, 61 years; 46% female) enrolled in 189 phase 2 and 3 trials supporting FDA approval of 123 anticancer drugs from 1998 to 2018. Biologic, targeted, or immune-based therapies accounted for 72.5% of drug approvals.

Over 148,138 person-years of follow-up (median trial duration, 30 months), there were 1,148 incidents of MACE (375 heart failure, 253 MIs, 180 strokes, 65 atrial fibrillation, 29 coronary revascularizations, and 246 CVD deaths). MACE rates were higher in the intervention group than in the control group (792 vs. 356; P less than .01). Among the 64 trials that excluded patients with baseline CVD, there were 269 incidents of MACE.

To put this finding in context, the researchers examined the reported incidence of MACE among some 6,000 similarly aged participants in the Multi-Ethnic Study of Atherosclerosis (MESA). The overall weighted-average incidence rate was 1,408 per 100,000 person-years among MESA participants, compared with 542 events per 100,000 person-years among oncology trial participants (716 per 100,000 in the intervention arm). This represents a reported-to-expected ratio of 0.38 – a 2.6-fold lower rate of reported events (P less than .001) – and a risk difference of 866.

Further, MACE reporting was lower by a factor of 1.7 among all cancer trial participants irrespective of baseline CVD status (reported-to-expected ratio, 0.56; risk difference, 613; P less than .001).

There was no significant difference in MACE reporting between independent or industry-sponsored trials, the authors report.
 

No malicious intent

“There are likely some that might lean toward not wanting to attribute blame to a new drug when the drug is in a study, but I really think that the leading factor is lack of awareness,” Dr. Addison said. “I’ve talked with several cancer collaborators around the country who run large clinical trials, and I think often, when an event may be brought to someone’s attention, there is a tendency to just write it off as kind of a generic expected event due to age, or just something that’s not really pertinent to the study. So they don’t really focus on it as much.”

“Closer collaboration between cardiologists and cancer physicians is needed to better determine true cardiac risks among patients treated with these drugs.”

Breast cancer oncologist Marc E. Lippman, MD, of Georgetown University Medical Center and Georgetown Lombardi Comprehensive Cancer Center, Washington, D.C., isn’t convinced a lack of awareness is the culprit.

“I don’t agree with that at all,” he said in an interview. “I think there are very, very clear rules and guidelines these days for adverse-event reporting. I think that’s not a very likely explanation – that it’s not on the radar.”

Part of the problem may be that some of the toxicities, particularly cardiovascular, may not emerge for years, he said. Participant screening for the trials also likely removed patients with high cardiovascular risk. “It’s very understandable to me – I’m not saying it’s good particularly – but I think it’s very understandable that, if you’re trying to develop a drug, the last thing you’d want to have is a lot of toxicity that you might have avoided by just being restrictive in who you let into the study,” Dr. Lippman said.

The underreported CVD events may also reflect the rapidly changing profile of cardiovascular toxicities associated with novel anticancer therapies.

“Providers, both cancer and noncancer, generally put cardiotoxicity in the box of anthracyclines and radiation, but particularly over the last decade, we’ve begun to understand it’s well beyond any one class of drugs,” Dr. Addison said.

“I agree completely,” Dr. Lippman said. For example, “the checkpoint inhibitors are so unbelievably different in terms of their toxicities that many people simply didn’t even know what they were getting into at first.”
 

One size does not fit all

Javid Moslehi, MD, director of the cardio-oncology program at Vanderbilt University, Nashville, Tenn., said echocardiography – recommended to detect changes in left ventricular function in patients exposed to anthracyclines or targeted agents like trastuzumab (Herceptin) – isn’t enough to address today’s cancer therapy–related CVD events.

Courtesy Joe Howell

“Initial drugs like anthracyclines or Herceptin in cardio-oncology were associated with systolic cardiac dysfunction, whereas the majority of issues we see in the cardio-oncology clinics today are vascular, metabolic, arrhythmogenic, and inflammatory,” he said in an interview. “Echocardiography misses the big and increasingly complex picture.”

His group, for example, has been studying myocarditis associated with immunotherapies, but none of the clinical trials require screening or surveillance for myocarditis with a cardiac biomarker like troponin.

The group also recently identified 303 deaths in patients exposed to ibrutinib, a drug that revolutionized the treatment of several B-cell malignancies but is associated with higher rates of atrial fibrillation, which is also associated with increased bleeding risk. “So there’s a little bit of a double whammy there, given that we often treat atrial fibrillation with anticoagulation and where we can cause complications in patients,” Dr. Moslehi noted.

Although there needs to be closer collaboration between cardiologists and oncologists on individual trials, cardiologists also have to realize that oncology care has become very personalized, he suggested.

“What’s probably relevant for the breast cancer patient may not be relevant for the prostate cancer patient and their respective treatments,” Dr. Moslehi said. “So if we were to say, ‘every person should get an echo,’ that may be less relevant to the prostate cancer patient where treatments can cause vascular and metabolic perturbations or to the patient treated with immunotherapy who may have myocarditis, where many of the echos can be normal. There’s no one-size-fits-all for these things.”

Wearable technologies like smartwatches could play a role in improving the reporting of CVD events with novel therapies but a lot more research needs to be done to validate these tools, Dr. Addison said. “But as we continue on into the 21st century, this is going to expand and may potentially help us,” he added.

In the interim, better standardization is needed of the cardiovascular events reported in oncology trials, particularly the Common Terminology Criteria for Adverse Events (CTCAE), said Dr. Moslehi, who also serves as chair of the American Heart Association’s subcommittee on cardio-oncology.

“Cardiovascular definitions are not exactly uniform and are not consistent with what we in cardiology consider to be important or relevant,” he said. “So I think there needs to be better standardization of these definitions, specifically within the CTCAE, which is what the oncologists use to identify adverse events.”

In a linked editorial (J Am Coll Cardiol. 2020;75:629-31), Dr. Lippman and cardiologist Nanette Bishopric, MD, of the Medstar Heart and Vascular Institute in Washington, D.C., suggested it may also be time to organize a consortium that can carry out “rigorous multicenter clinical investigations to evaluate the cardiotoxicity of emerging cancer treatments,” similar to the Thrombosis in Myocardial Infarction Study Group.

“The success of this consortium in pioneering and targeting multiple generations of drugs for the treatment of MI, involving tens of thousands of patients and thousands of collaborations across multiple national borders, is a model for how to move forward in providing the new hope of cancer cure without the trade-off of years lost to heart disease,” the editorialists concluded.

The study was supported in part by National Institutes of Health grants, including a K12-CA133250 grant to Dr. Addison. Dr. Bishopric reported being on the scientific board of C&C Biopharma. Dr. Lippman reports being on the board of directors of and holding stock in Seattle Genetics. Dr. Moslehi reported having served on advisory boards for Pfizer, Novartis, Bristol-Myers Squibb, Deciphera, Audentes Pharmaceuticals, Nektar, Takeda, Ipsen, Myokardia, AstraZeneca, GlaxoSmithKline, Intrexon, and Regeneron.

This article first appeared on Medscape.com.

A new study has found that patients with atrial fibrillation (AF) who take oral anticoagulants and then suffer from lower GI bleeding have a much higher risk of being diagnosed with colorectal cancer.

“Our data indicate that lower GI bleeding in these patients should not be dismissed as a mere consequence of anticoagulation treatment,” wrote Peter Vibe Rasmussen, MD, of the University of Copenhagen in Denmark and his coauthors, adding that “timely examination could potentially provide early detection of malignant colorectal lesions.” The study was published in the European Heart Journal.

To determine whether being treated with oral anticoagulants (OACs) and subsequently undergoing GI bleeding indicates colorectal cancer, the researchers examined data from 125,418 Danish AF patients gathered from a nationwide registry. Their median age was 73 years old, and 58% (n = 73,271) were males.

Over a 3-year follow-up period, 2,576 cases of lower GI bleeding were identified; 140 of those cases led to a diagnosis of colorectal cancer within a year. The absolute 1-year risk of colorectal cancer after bleeding was 8.1% (95% confidence interval, 6.1-10.6%) in patients aged 76-80 and 3.7% (95% CI, 2.2-6.2%) in patients 65 years old or younger.

All age groups had a higher risk of colorectal cancer after bleeding, compared with patients without bleeding. Patients 65 or younger had a risk ratio of 24.2 (95% CI, 14.5-40.4) while patients over 85 had a risk ratio of 12.3 (95% CI, 7.9-19.0).

The authors acknowledged their study’s limitations, including a lack of information regarding certain risk factors, such as alcohol consumption, dietary habits, and obesity. In addition, they noted that the absolute risk of colorectal cancer in patients without bleeding is likely underdiagnosed, as “patients without GI bleeding are less likely to undergo diagnostic procedures.”

Two of the authors are employees at Bristol-Myers Squibb and Pfizer, respectively. Six additional authors reported receiving grants, speaker honoraria and consulting fees from various pharmaceutical companies. The remaining authors reported no conflicts of interest.

SOURCE: Rasmussen PV et al. Eur Heart J. 2020 Feb 7. doi: 10.1093/eurheartj/ehz964.

A new study has found that patients with atrial fibrillation (AF) who take oral anticoagulants and then suffer from lower GI bleeding have a much higher risk of being diagnosed with colorectal cancer.

“Our data indicate that lower GI bleeding in these patients should not be dismissed as a mere consequence of anticoagulation treatment,” wrote Peter Vibe Rasmussen, MD, of the University of Copenhagen in Denmark and his coauthors, adding that “timely examination could potentially provide early detection of malignant colorectal lesions.” The study was published in the European Heart Journal.

To determine whether being treated with oral anticoagulants (OACs) and subsequently undergoing GI bleeding indicates colorectal cancer, the researchers examined data from 125,418 Danish AF patients gathered from a nationwide registry. Their median age was 73 years old, and 58% (n = 73,271) were males.

Over a 3-year follow-up period, 2,576 cases of lower GI bleeding were identified; 140 of those cases led to a diagnosis of colorectal cancer within a year. The absolute 1-year risk of colorectal cancer after bleeding was 8.1% (95% confidence interval, 6.1-10.6%) in patients aged 76-80 and 3.7% (95% CI, 2.2-6.2%) in patients 65 years old or younger.

All age groups had a higher risk of colorectal cancer after bleeding, compared with patients without bleeding. Patients 65 or younger had a risk ratio of 24.2 (95% CI, 14.5-40.4) while patients over 85 had a risk ratio of 12.3 (95% CI, 7.9-19.0).

The authors acknowledged their study’s limitations, including a lack of information regarding certain risk factors, such as alcohol consumption, dietary habits, and obesity. In addition, they noted that the absolute risk of colorectal cancer in patients without bleeding is likely underdiagnosed, as “patients without GI bleeding are less likely to undergo diagnostic procedures.”

Two of the authors are employees at Bristol-Myers Squibb and Pfizer, respectively. Six additional authors reported receiving grants, speaker honoraria and consulting fees from various pharmaceutical companies. The remaining authors reported no conflicts of interest.

SOURCE: Rasmussen PV et al. Eur Heart J. 2020 Feb 7. doi: 10.1093/eurheartj/ehz964.

A new study has found that patients with atrial fibrillation (AF) who take oral anticoagulants and then suffer from lower GI bleeding have a much higher risk of being diagnosed with colorectal cancer.

“Our data indicate that lower GI bleeding in these patients should not be dismissed as a mere consequence of anticoagulation treatment,” wrote Peter Vibe Rasmussen, MD, of the University of Copenhagen in Denmark and his coauthors, adding that “timely examination could potentially provide early detection of malignant colorectal lesions.” The study was published in the European Heart Journal.

To determine whether being treated with oral anticoagulants (OACs) and subsequently undergoing GI bleeding indicates colorectal cancer, the researchers examined data from 125,418 Danish AF patients gathered from a nationwide registry. Their median age was 73 years old, and 58% (n = 73,271) were males.

Over a 3-year follow-up period, 2,576 cases of lower GI bleeding were identified; 140 of those cases led to a diagnosis of colorectal cancer within a year. The absolute 1-year risk of colorectal cancer after bleeding was 8.1% (95% confidence interval, 6.1-10.6%) in patients aged 76-80 and 3.7% (95% CI, 2.2-6.2%) in patients 65 years old or younger.

All age groups had a higher risk of colorectal cancer after bleeding, compared with patients without bleeding. Patients 65 or younger had a risk ratio of 24.2 (95% CI, 14.5-40.4) while patients over 85 had a risk ratio of 12.3 (95% CI, 7.9-19.0).

The authors acknowledged their study’s limitations, including a lack of information regarding certain risk factors, such as alcohol consumption, dietary habits, and obesity. In addition, they noted that the absolute risk of colorectal cancer in patients without bleeding is likely underdiagnosed, as “patients without GI bleeding are less likely to undergo diagnostic procedures.”

Two of the authors are employees at Bristol-Myers Squibb and Pfizer, respectively. Six additional authors reported receiving grants, speaker honoraria and consulting fees from various pharmaceutical companies. The remaining authors reported no conflicts of interest.

SOURCE: Rasmussen PV et al. Eur Heart J. 2020 Feb 7. doi: 10.1093/eurheartj/ehz964.

SNOWMASS, COLO. – Myths and misconceptions abound regarding the merits of universal incorporation of the resting 12-lead ECG into preparticipation cardiovascular screening of young athletes, Aaron L. Baggish, MD, declared at the annual Cardiovascular Conference at Snowmass sponsored by the American College of Cardiology.

Bruce Jancin/MDedge News

Dr. Baggish, director of the Cardiovascular Performance Program at Massachusetts General Hospital and a cardiologist at Harvard Medical School, Boston, set out to pop the balloons of a handful of these widely floating myths. These are commonly held fictions: In an electronic poll at the outset of his talk, only one in five members of his large audience recognized all of the following boldface statements as false.

“Preparticipation cardiovascular screening (PPCVS) has been shown to reduce the incidence of sudden cardiac death (SCD) among young competitive athletes.”

FALSE. Not for PPCVS by history and physical examination alone, or with the addition of a screening 12-lead ECG. In Italy, where a cluster of high-profile sudden cardiac deaths led to passage of a 1982 national law mandating 12-lead ECG screening as part of the PPCVS, investigators presented studies purporting to demonstrate a subsequent reduction in the risk of SCD. But those studies were subsequently shown to be fraught with problems. And a high-quality study capable of convincingly demonstrating such a benefit would need to be prohibitively large and expensive. “Don’t hold your breath waiting for that to happen anytime soon,” advised Dr. Baggish, who is medical director for the Boston Marathon, as well as team cardiologist for Harvard University Athletics, the New England Patriots, the Boston Bruins, USRowing, and U.S. Soccer.

“Hypertrophic cardiomyopathy is the leading cause of sudden death among young competitive athletes.”

FALSE. A study of the National Collegiate Athletic Association (NCAA) comprehensive database, with 4.2 million athlete-years of follow-up, showed that the most common cause of SCD was autopsy-negative sudden unexplained death (SUD), accounting for 25% of cases. Hypertrophic cardiomyopathy was deemed the cause of 8% of the SCDs (Circulation. 2015 Jul 7;132[1]:10-9).

“The same thing has been shown in studies done in the United Kingdom and in Australia: The vast majority of people who drop dead at a young age have a totally normal-looking heart. Over the next 10 years, I suspect that one of the most important areas that we’ll be looking into will be this SUD area, perhaps using molecular autopsy to make some headway there,” according to the cardiologist.

SCD is rare. In the NCAA study, the incidence was 1 in 53,703 athlete-years. In sobering contrast, accidents, suicide, and homicide accounted for 50% of all deaths in the collegiate athletes.

“When you think about what’s important in terms of educating young people to be safe, the history and physical exam and 12-lead ECG are nowhere near as important as talking with them about minimizing accident risk and staying away from guns,” Dr. Baggish commented.

“Contemporary ECG interpretation criteria designed specifically for use in young athletes have eliminated the problem of false-positive testing.”

FALSE. The story of adding ECG screening to the PPCVS is one of dramatically improved sensitivity over history and physical exam alone, but always at the cost of reduced specificity. In the Harvard Athlete Initiative Study, Dr. Baggish and coworkers reported that adding the 12-lead ECG resulted in a 17% false-positive rate (Ann Intern Med. 2010 Mar 2;152[5]:269-75). Similar findings were reported in independent studies at two other large universities.

“An ECG false-positive rate of 16%-20%? That’s big trouble. Remember, the conditions we’re looking for are uncommon, with a prevalence of maybe 1 in 500 at most. So if you’re flagging one-fifth or one-sixth of your athletes, the ECG is really not an appropriate tool for screening,” he commented.

Recognition of this limitation has led to development of refined, improved ECG criteria: most notably, the 2012 Seattle criteria, with an associated false-positive rate of 4%-8%, followed by the 2017 International Consensus Criteria (J Am Coll Cardiol. 2017 Feb 28;69[8]:1057-75), with a false-positive rate of 1%-2%. That’s a great improvement. Still, when Dr. Baggish, a marathoner himself, thinks about the roughly 32,000 Boston Marathon runners at the starting line each year, that false-positive rate would translate into 320-640 of those individuals being needlessly subjected to the not-insignificant time and expense of further testing, along with considerable anxiety for the runners and their families, and perhaps even inappropriate disqualification.

“Current ACC/AHA guidelines recommend against the use of the 12-lead ECG during the PPCVS.”

FALSE. Dr. Baggish was a coauthor of the current guidelines, which he described as “an open-door invitation to local decisions, with some important caveats” (Circulation. 2015 Dec 1;132[22]:e267-72).

The guidelines state that the minimum requirement and legal standard for PPCVS of young competitive athletes is a focused history and physical examination, such as the American College of Cardiology/American Heart Association 14-point screen, which consists of 10 elements addressing personal and family history and 4 focused on the physical examination, or the American Academy of Pediatrics Preparticipation Physical Evaluation. Further, while mandatory universal inclusion of the 12-lead ECG is not recommended – it’s rated Class III, meaning don’t do it – the guidelines state that screening programs are at liberty to choose the 12-lead ECG as an additional tool, “provided that close physician involvement and sufficient quality control can be achieved. If undertaken, such initiatives should recognize the known and anticipated limitations of the 12-lead ECG as a population screening test, including the expected frequency of false-positive and false-negative test results, as well as the cost required to support these initiatives over time.”

Dr. Baggish considers the ACC/AHA guidelines to be one of the two most important developments in the field of SCD during sports in recent years. The other is the NCAA-sponsored multidisciplinary Interassociation Consensus Statement on Cardiovascular Care of College Student-Athletes, which he also coauthored (J Am Coll Cardiol. 2016 Jun 28;67[25]:2981-95).

The report lays out the case for a much broader than traditional view of the PPCVS, with “goals that extend beyond detection of occult high-risk pathology.”

“The NCAA has done something very interesting,” Dr. Baggish explained. “It has said that, if we’re going to be screening, we should be thinking about screening with a much broader rationale. It’s not just about finding the needle-in-a-haystack hypertrophic cardiomyopathy or anomalous coronary arteries, it’s about engaging student-athletes at an early point in their collegiate career and trying to improve their health overall – and not just while they’re in college, but over their lifespan.”

He reported having no financial conflicts regarding his presentation.

[email protected]

SNOWMASS, COLO. – Myths and misconceptions abound regarding the merits of universal incorporation of the resting 12-lead ECG into preparticipation cardiovascular screening of young athletes, Aaron L. Baggish, MD, declared at the annual Cardiovascular Conference at Snowmass sponsored by the American College of Cardiology.

Bruce Jancin/MDedge News

Dr. Baggish, director of the Cardiovascular Performance Program at Massachusetts General Hospital and a cardiologist at Harvard Medical School, Boston, set out to pop the balloons of a handful of these widely floating myths. These are commonly held fictions: In an electronic poll at the outset of his talk, only one in five members of his large audience recognized all of the following boldface statements as false.

“Preparticipation cardiovascular screening (PPCVS) has been shown to reduce the incidence of sudden cardiac death (SCD) among young competitive athletes.”

FALSE. Not for PPCVS by history and physical examination alone, or with the addition of a screening 12-lead ECG. In Italy, where a cluster of high-profile sudden cardiac deaths led to passage of a 1982 national law mandating 12-lead ECG screening as part of the PPCVS, investigators presented studies purporting to demonstrate a subsequent reduction in the risk of SCD. But those studies were subsequently shown to be fraught with problems. And a high-quality study capable of convincingly demonstrating such a benefit would need to be prohibitively large and expensive. “Don’t hold your breath waiting for that to happen anytime soon,” advised Dr. Baggish, who is medical director for the Boston Marathon, as well as team cardiologist for Harvard University Athletics, the New England Patriots, the Boston Bruins, USRowing, and U.S. Soccer.

“Hypertrophic cardiomyopathy is the leading cause of sudden death among young competitive athletes.”

FALSE. A study of the National Collegiate Athletic Association (NCAA) comprehensive database, with 4.2 million athlete-years of follow-up, showed that the most common cause of SCD was autopsy-negative sudden unexplained death (SUD), accounting for 25% of cases. Hypertrophic cardiomyopathy was deemed the cause of 8% of the SCDs (Circulation. 2015 Jul 7;132[1]:10-9).

“The same thing has been shown in studies done in the United Kingdom and in Australia: The vast majority of people who drop dead at a young age have a totally normal-looking heart. Over the next 10 years, I suspect that one of the most important areas that we’ll be looking into will be this SUD area, perhaps using molecular autopsy to make some headway there,” according to the cardiologist.

SCD is rare. In the NCAA study, the incidence was 1 in 53,703 athlete-years. In sobering contrast, accidents, suicide, and homicide accounted for 50% of all deaths in the collegiate athletes.

“When you think about what’s important in terms of educating young people to be safe, the history and physical exam and 12-lead ECG are nowhere near as important as talking with them about minimizing accident risk and staying away from guns,” Dr. Baggish commented.

“Contemporary ECG interpretation criteria designed specifically for use in young athletes have eliminated the problem of false-positive testing.”

FALSE. The story of adding ECG screening to the PPCVS is one of dramatically improved sensitivity over history and physical exam alone, but always at the cost of reduced specificity. In the Harvard Athlete Initiative Study, Dr. Baggish and coworkers reported that adding the 12-lead ECG resulted in a 17% false-positive rate (Ann Intern Med. 2010 Mar 2;152[5]:269-75). Similar findings were reported in independent studies at two other large universities.

“An ECG false-positive rate of 16%-20%? That’s big trouble. Remember, the conditions we’re looking for are uncommon, with a prevalence of maybe 1 in 500 at most. So if you’re flagging one-fifth or one-sixth of your athletes, the ECG is really not an appropriate tool for screening,” he commented.

Recognition of this limitation has led to development of refined, improved ECG criteria: most notably, the 2012 Seattle criteria, with an associated false-positive rate of 4%-8%, followed by the 2017 International Consensus Criteria (J Am Coll Cardiol. 2017 Feb 28;69[8]:1057-75), with a false-positive rate of 1%-2%. That’s a great improvement. Still, when Dr. Baggish, a marathoner himself, thinks about the roughly 32,000 Boston Marathon runners at the starting line each year, that false-positive rate would translate into 320-640 of those individuals being needlessly subjected to the not-insignificant time and expense of further testing, along with considerable anxiety for the runners and their families, and perhaps even inappropriate disqualification.

“Current ACC/AHA guidelines recommend against the use of the 12-lead ECG during the PPCVS.”

FALSE. Dr. Baggish was a coauthor of the current guidelines, which he described as “an open-door invitation to local decisions, with some important caveats” (Circulation. 2015 Dec 1;132[22]:e267-72).

The guidelines state that the minimum requirement and legal standard for PPCVS of young competitive athletes is a focused history and physical examination, such as the American College of Cardiology/American Heart Association 14-point screen, which consists of 10 elements addressing personal and family history and 4 focused on the physical examination, or the American Academy of Pediatrics Preparticipation Physical Evaluation. Further, while mandatory universal inclusion of the 12-lead ECG is not recommended – it’s rated Class III, meaning don’t do it – the guidelines state that screening programs are at liberty to choose the 12-lead ECG as an additional tool, “provided that close physician involvement and sufficient quality control can be achieved. If undertaken, such initiatives should recognize the known and anticipated limitations of the 12-lead ECG as a population screening test, including the expected frequency of false-positive and false-negative test results, as well as the cost required to support these initiatives over time.”

Dr. Baggish considers the ACC/AHA guidelines to be one of the two most important developments in the field of SCD during sports in recent years. The other is the NCAA-sponsored multidisciplinary Interassociation Consensus Statement on Cardiovascular Care of College Student-Athletes, which he also coauthored (J Am Coll Cardiol. 2016 Jun 28;67[25]:2981-95).

The report lays out the case for a much broader than traditional view of the PPCVS, with “goals that extend beyond detection of occult high-risk pathology.”

“The NCAA has done something very interesting,” Dr. Baggish explained. “It has said that, if we’re going to be screening, we should be thinking about screening with a much broader rationale. It’s not just about finding the needle-in-a-haystack hypertrophic cardiomyopathy or anomalous coronary arteries, it’s about engaging student-athletes at an early point in their collegiate career and trying to improve their health overall – and not just while they’re in college, but over their lifespan.”

He reported having no financial conflicts regarding his presentation.

[email protected]

SNOWMASS, COLO. – Myths and misconceptions abound regarding the merits of universal incorporation of the resting 12-lead ECG into preparticipation cardiovascular screening of young athletes, Aaron L. Baggish, MD, declared at the annual Cardiovascular Conference at Snowmass sponsored by the American College of Cardiology.

Bruce Jancin/MDedge News

Dr. Baggish, director of the Cardiovascular Performance Program at Massachusetts General Hospital and a cardiologist at Harvard Medical School, Boston, set out to pop the balloons of a handful of these widely floating myths. These are commonly held fictions: In an electronic poll at the outset of his talk, only one in five members of his large audience recognized all of the following boldface statements as false.

“Preparticipation cardiovascular screening (PPCVS) has been shown to reduce the incidence of sudden cardiac death (SCD) among young competitive athletes.”

FALSE. Not for PPCVS by history and physical examination alone, or with the addition of a screening 12-lead ECG. In Italy, where a cluster of high-profile sudden cardiac deaths led to passage of a 1982 national law mandating 12-lead ECG screening as part of the PPCVS, investigators presented studies purporting to demonstrate a subsequent reduction in the risk of SCD. But those studies were subsequently shown to be fraught with problems. And a high-quality study capable of convincingly demonstrating such a benefit would need to be prohibitively large and expensive. “Don’t hold your breath waiting for that to happen anytime soon,” advised Dr. Baggish, who is medical director for the Boston Marathon, as well as team cardiologist for Harvard University Athletics, the New England Patriots, the Boston Bruins, USRowing, and U.S. Soccer.

“Hypertrophic cardiomyopathy is the leading cause of sudden death among young competitive athletes.”

FALSE. A study of the National Collegiate Athletic Association (NCAA) comprehensive database, with 4.2 million athlete-years of follow-up, showed that the most common cause of SCD was autopsy-negative sudden unexplained death (SUD), accounting for 25% of cases. Hypertrophic cardiomyopathy was deemed the cause of 8% of the SCDs (Circulation. 2015 Jul 7;132[1]:10-9).

“The same thing has been shown in studies done in the United Kingdom and in Australia: The vast majority of people who drop dead at a young age have a totally normal-looking heart. Over the next 10 years, I suspect that one of the most important areas that we’ll be looking into will be this SUD area, perhaps using molecular autopsy to make some headway there,” according to the cardiologist.

SCD is rare. In the NCAA study, the incidence was 1 in 53,703 athlete-years. In sobering contrast, accidents, suicide, and homicide accounted for 50% of all deaths in the collegiate athletes.

“When you think about what’s important in terms of educating young people to be safe, the history and physical exam and 12-lead ECG are nowhere near as important as talking with them about minimizing accident risk and staying away from guns,” Dr. Baggish commented.

“Contemporary ECG interpretation criteria designed specifically for use in young athletes have eliminated the problem of false-positive testing.”

FALSE. The story of adding ECG screening to the PPCVS is one of dramatically improved sensitivity over history and physical exam alone, but always at the cost of reduced specificity. In the Harvard Athlete Initiative Study, Dr. Baggish and coworkers reported that adding the 12-lead ECG resulted in a 17% false-positive rate (Ann Intern Med. 2010 Mar 2;152[5]:269-75). Similar findings were reported in independent studies at two other large universities.

“An ECG false-positive rate of 16%-20%? That’s big trouble. Remember, the conditions we’re looking for are uncommon, with a prevalence of maybe 1 in 500 at most. So if you’re flagging one-fifth or one-sixth of your athletes, the ECG is really not an appropriate tool for screening,” he commented.

Recognition of this limitation has led to development of refined, improved ECG criteria: most notably, the 2012 Seattle criteria, with an associated false-positive rate of 4%-8%, followed by the 2017 International Consensus Criteria (J Am Coll Cardiol. 2017 Feb 28;69[8]:1057-75), with a false-positive rate of 1%-2%. That’s a great improvement. Still, when Dr. Baggish, a marathoner himself, thinks about the roughly 32,000 Boston Marathon runners at the starting line each year, that false-positive rate would translate into 320-640 of those individuals being needlessly subjected to the not-insignificant time and expense of further testing, along with considerable anxiety for the runners and their families, and perhaps even inappropriate disqualification.

“Current ACC/AHA guidelines recommend against the use of the 12-lead ECG during the PPCVS.”

FALSE. Dr. Baggish was a coauthor of the current guidelines, which he described as “an open-door invitation to local decisions, with some important caveats” (Circulation. 2015 Dec 1;132[22]:e267-72).

The guidelines state that the minimum requirement and legal standard for PPCVS of young competitive athletes is a focused history and physical examination, such as the American College of Cardiology/American Heart Association 14-point screen, which consists of 10 elements addressing personal and family history and 4 focused on the physical examination, or the American Academy of Pediatrics Preparticipation Physical Evaluation. Further, while mandatory universal inclusion of the 12-lead ECG is not recommended – it’s rated Class III, meaning don’t do it – the guidelines state that screening programs are at liberty to choose the 12-lead ECG as an additional tool, “provided that close physician involvement and sufficient quality control can be achieved. If undertaken, such initiatives should recognize the known and anticipated limitations of the 12-lead ECG as a population screening test, including the expected frequency of false-positive and false-negative test results, as well as the cost required to support these initiatives over time.”

Dr. Baggish considers the ACC/AHA guidelines to be one of the two most important developments in the field of SCD during sports in recent years. The other is the NCAA-sponsored multidisciplinary Interassociation Consensus Statement on Cardiovascular Care of College Student-Athletes, which he also coauthored (J Am Coll Cardiol. 2016 Jun 28;67[25]:2981-95).

The report lays out the case for a much broader than traditional view of the PPCVS, with “goals that extend beyond detection of occult high-risk pathology.”

“The NCAA has done something very interesting,” Dr. Baggish explained. “It has said that, if we’re going to be screening, we should be thinking about screening with a much broader rationale. It’s not just about finding the needle-in-a-haystack hypertrophic cardiomyopathy or anomalous coronary arteries, it’s about engaging student-athletes at an early point in their collegiate career and trying to improve their health overall – and not just while they’re in college, but over their lifespan.”

He reported having no financial conflicts regarding his presentation.

[email protected]

SNOWMASS, COLO. – Targeted temperature management maintained at 32-36 degrees Celsius is now a strong class I recommendation for all comatose patients who experience return of spontaneous circulation after out-of-hospital cardiac arrest, including those with nonshockable rhythms, Erin A. Bohula, MD, PhD, said at the annual Cardiovascular Conference at Snowmass sponsored by the American College of Cardiology.

Bruce Jancin/MDedge News

“Our practice is that there are no absolute contraindications to targeted temperature management at the Brigham. Everybody gets cooled,” said Dr. Bohula, a cardiologist and critical care specialist at Brigham and Women’s Hospital and Harvard Medical School, Boston.

The current ACC/AHA guidelines declare: “There are essentially no patients for whom temperature control somewhere in the range between 32 degrees C [89.6 F) and 36 degrees C [96.8 F] is contraindicated.” The writing committee cited “recent clinical trial data enrolling patients with all rhythms, the rarity of adverse effects in trials, the high neurologic morbidity and mortality without any specific interventions, and the preponderance of data suggesting that temperature is an important variable for neurologic recovery” (Circulation. 2015 Nov 3;132[18 Suppl 2]:S465-82).

“That’s a pretty strong statement,” Dr. Bohula observed.

The current guidelines, which date back to 2015, give a class I, level of evidence B recommendation for targeted temperature management (TTM) in patients who are comatose with return of spontaneous circulation (ROSC) after out-of-hospital cardiac arrest involving ventricular fibrillation or pulseless ventricular fibrillation. The bedside definition of comatose is lack of meaningful response to verbal commands to squeeze hands, blink, or move toes.

The current recommendation for TTM in patients resuscitated from out-of-hospital cardiac arrest with a nonshockable rhythm is class I, level of evidence C, meaning it’s based on expert consensus. However, that recommendation is now out of date and due for a level-of-evidence upgrade in light of the recent results of the French HYPERION trial, an open-label randomized trial of 584 patients resuscitated from cardiac arrest with a nonshockable rhythm. Although 90-day mortality was similarly high in the TTM and targeted normothermia groups, the rate of favorable neurologic outcome as assessed by a Cerebral Performance Category scale score of 1 or 2 was 10.2% in the TTM group, significantly better than the 5.7% rate in controls (N Engl J Med. 2019 Dec 12;381[24]:2327-37).

The 2010, ACC/AHA guidelines recommended a TTM range of 32-34 degrees C, but on the basis of subsequent persuasive randomized trial data, that range was broadened to 32-36 degrees C in the 2015 guidelines, with a class IB recommendation. Maintenance of TTM for at least 24 hours has a IIa, level of evidence C recommendation in the current guidelines.

The guidelines emphasize that specific features may favor selection of one temperature for TTM over another. For example, patients with seizures or cerebral edema might be better off with TTM at a lower temperature, while a higher temperature may be best for those with bleeding or severe bradycardia. At Brigham and Women’s Hospital, the default temperature is 33 degrees C. However, TTM with a goal of 36 degrees C is seriously considered in patients with recent head trauma, major surgery within the past 2 weeks, refractory hypotension, severe sepsis, pregnancy, or high bleeding risk. Rewarming is done at a rate of 0.25 degrees C per hour, with sedation maintained until the patient has been returned to 98.6 degrees F, according to Dr. Bohula.

Based on several negative studies of TTM using rapid infusion of chilled fluids in the ambulance en route to the hospital, the guidelines rate that practice class IIIA, meaning don’t do it. Avoidance of a systolic blood pressure below 90 mm Hg and a mean arterial pressure of less than 65 mm Hg gets a class IIb level of evidence C recommendation to lessen the risk of cerebral hypoxia.
 

TTM a major breakthrough

Prior to the introduction of TTM, comatose patients with ROSC after out-of-hospital cardiac arrest had a dreadful prognosis, with survival rates of 1%-10% in registry studies. In contrast, the survival rate in the landmark TTM clinical trials was 50%-60%. And while that’s a dramatic improvement, ROSC after cardiac arrest remains a high-mortality condition. Dr. Bohula was first author of a report by the Critical Care Cardiology Trials Network, composed of 16 tertiary cardiac intensive care units in the United States and Canada. Cardiac arrest was the primary indication for 8.7% of 3,049 consecutive admissions, and its 38% mortality rate was the highest of all cardiac critical care indications (JAMA Cardiol. 2019 Jul 24;4[9]:928-35).

TTM was developed in response to a recognition that two-thirds of deaths in patients who make it to the hospital after out-of-hospital cardiac arrest are neurologic – the result of brain anoxia – rather than being due to the myocardial ischemia that may have initially brought them to medical attention.

“Time is brain cells, the same way we think of time as cardiac muscle,” Dr. Bohula observed.

The main idea behind therapeutic hypothermia is that it lowers the cerebral metabolic rate of oxygen to reduce the consequences of ongoing anoxia. The brain doesn’t require as much perfusion when cooled.

TTM has other beneficial neurologic effects as well: It reduces cerebral blood volume via autoregulation, decreases intracranial pressure, and blunts the inflammatory response involved in the postcardiac arrest syndrome. In addition, TTM has anticonvulsant properties, an important effect because seizures and/or myoclonus occur in up to 15% of adults who achieve ROSC after cardiac arrest – and in even more of those who are comatose after doing so. And seizures increase the brain’s metabolic rate threefold, resulting in more cerebral ischemic injury, she explained.

Seizure activity can be difficult to distinguish from shivering in a patient on TTM. For this reason Dr. Bohula recommends putting patients on continuous EEG monitoring from the time of admission, as is the routine practice at the Brigham.

She reported serving as a consultant to Daiichi Sankyo, Servier, Lexicon, Kowa, Merck, Novartis, Novo Nordisk, and the National Institutes of Health. In addition, she generates institutional research grants provided by a half-dozen pharmaceutical companies.

[email protected]

SNOWMASS, COLO. – Targeted temperature management maintained at 32-36 degrees Celsius is now a strong class I recommendation for all comatose patients who experience return of spontaneous circulation after out-of-hospital cardiac arrest, including those with nonshockable rhythms, Erin A. Bohula, MD, PhD, said at the annual Cardiovascular Conference at Snowmass sponsored by the American College of Cardiology.

Bruce Jancin/MDedge News

“Our practice is that there are no absolute contraindications to targeted temperature management at the Brigham. Everybody gets cooled,” said Dr. Bohula, a cardiologist and critical care specialist at Brigham and Women’s Hospital and Harvard Medical School, Boston.

The current ACC/AHA guidelines declare: “There are essentially no patients for whom temperature control somewhere in the range between 32 degrees C [89.6 F) and 36 degrees C [96.8 F] is contraindicated.” The writing committee cited “recent clinical trial data enrolling patients with all rhythms, the rarity of adverse effects in trials, the high neurologic morbidity and mortality without any specific interventions, and the preponderance of data suggesting that temperature is an important variable for neurologic recovery” (Circulation. 2015 Nov 3;132[18 Suppl 2]:S465-82).

“That’s a pretty strong statement,” Dr. Bohula observed.

The current guidelines, which date back to 2015, give a class I, level of evidence B recommendation for targeted temperature management (TTM) in patients who are comatose with return of spontaneous circulation (ROSC) after out-of-hospital cardiac arrest involving ventricular fibrillation or pulseless ventricular fibrillation. The bedside definition of comatose is lack of meaningful response to verbal commands to squeeze hands, blink, or move toes.

The current recommendation for TTM in patients resuscitated from out-of-hospital cardiac arrest with a nonshockable rhythm is class I, level of evidence C, meaning it’s based on expert consensus. However, that recommendation is now out of date and due for a level-of-evidence upgrade in light of the recent results of the French HYPERION trial, an open-label randomized trial of 584 patients resuscitated from cardiac arrest with a nonshockable rhythm. Although 90-day mortality was similarly high in the TTM and targeted normothermia groups, the rate of favorable neurologic outcome as assessed by a Cerebral Performance Category scale score of 1 or 2 was 10.2% in the TTM group, significantly better than the 5.7% rate in controls (N Engl J Med. 2019 Dec 12;381[24]:2327-37).

The 2010, ACC/AHA guidelines recommended a TTM range of 32-34 degrees C, but on the basis of subsequent persuasive randomized trial data, that range was broadened to 32-36 degrees C in the 2015 guidelines, with a class IB recommendation. Maintenance of TTM for at least 24 hours has a IIa, level of evidence C recommendation in the current guidelines.

The guidelines emphasize that specific features may favor selection of one temperature for TTM over another. For example, patients with seizures or cerebral edema might be better off with TTM at a lower temperature, while a higher temperature may be best for those with bleeding or severe bradycardia. At Brigham and Women’s Hospital, the default temperature is 33 degrees C. However, TTM with a goal of 36 degrees C is seriously considered in patients with recent head trauma, major surgery within the past 2 weeks, refractory hypotension, severe sepsis, pregnancy, or high bleeding risk. Rewarming is done at a rate of 0.25 degrees C per hour, with sedation maintained until the patient has been returned to 98.6 degrees F, according to Dr. Bohula.

Based on several negative studies of TTM using rapid infusion of chilled fluids in the ambulance en route to the hospital, the guidelines rate that practice class IIIA, meaning don’t do it. Avoidance of a systolic blood pressure below 90 mm Hg and a mean arterial pressure of less than 65 mm Hg gets a class IIb level of evidence C recommendation to lessen the risk of cerebral hypoxia.
 

TTM a major breakthrough

Prior to the introduction of TTM, comatose patients with ROSC after out-of-hospital cardiac arrest had a dreadful prognosis, with survival rates of 1%-10% in registry studies. In contrast, the survival rate in the landmark TTM clinical trials was 50%-60%. And while that’s a dramatic improvement, ROSC after cardiac arrest remains a high-mortality condition. Dr. Bohula was first author of a report by the Critical Care Cardiology Trials Network, composed of 16 tertiary cardiac intensive care units in the United States and Canada. Cardiac arrest was the primary indication for 8.7% of 3,049 consecutive admissions, and its 38% mortality rate was the highest of all cardiac critical care indications (JAMA Cardiol. 2019 Jul 24;4[9]:928-35).

TTM was developed in response to a recognition that two-thirds of deaths in patients who make it to the hospital after out-of-hospital cardiac arrest are neurologic – the result of brain anoxia – rather than being due to the myocardial ischemia that may have initially brought them to medical attention.

“Time is brain cells, the same way we think of time as cardiac muscle,” Dr. Bohula observed.

The main idea behind therapeutic hypothermia is that it lowers the cerebral metabolic rate of oxygen to reduce the consequences of ongoing anoxia. The brain doesn’t require as much perfusion when cooled.

TTM has other beneficial neurologic effects as well: It reduces cerebral blood volume via autoregulation, decreases intracranial pressure, and blunts the inflammatory response involved in the postcardiac arrest syndrome. In addition, TTM has anticonvulsant properties, an important effect because seizures and/or myoclonus occur in up to 15% of adults who achieve ROSC after cardiac arrest – and in even more of those who are comatose after doing so. And seizures increase the brain’s metabolic rate threefold, resulting in more cerebral ischemic injury, she explained.

Seizure activity can be difficult to distinguish from shivering in a patient on TTM. For this reason Dr. Bohula recommends putting patients on continuous EEG monitoring from the time of admission, as is the routine practice at the Brigham.

She reported serving as a consultant to Daiichi Sankyo, Servier, Lexicon, Kowa, Merck, Novartis, Novo Nordisk, and the National Institutes of Health. In addition, she generates institutional research grants provided by a half-dozen pharmaceutical companies.

[email protected]

SNOWMASS, COLO. – Targeted temperature management maintained at 32-36 degrees Celsius is now a strong class I recommendation for all comatose patients who experience return of spontaneous circulation after out-of-hospital cardiac arrest, including those with nonshockable rhythms, Erin A. Bohula, MD, PhD, said at the annual Cardiovascular Conference at Snowmass sponsored by the American College of Cardiology.

Bruce Jancin/MDedge News

“Our practice is that there are no absolute contraindications to targeted temperature management at the Brigham. Everybody gets cooled,” said Dr. Bohula, a cardiologist and critical care specialist at Brigham and Women’s Hospital and Harvard Medical School, Boston.

The current ACC/AHA guidelines declare: “There are essentially no patients for whom temperature control somewhere in the range between 32 degrees C [89.6 F) and 36 degrees C [96.8 F] is contraindicated.” The writing committee cited “recent clinical trial data enrolling patients with all rhythms, the rarity of adverse effects in trials, the high neurologic morbidity and mortality without any specific interventions, and the preponderance of data suggesting that temperature is an important variable for neurologic recovery” (Circulation. 2015 Nov 3;132[18 Suppl 2]:S465-82).

“That’s a pretty strong statement,” Dr. Bohula observed.

The current guidelines, which date back to 2015, give a class I, level of evidence B recommendation for targeted temperature management (TTM) in patients who are comatose with return of spontaneous circulation (ROSC) after out-of-hospital cardiac arrest involving ventricular fibrillation or pulseless ventricular fibrillation. The bedside definition of comatose is lack of meaningful response to verbal commands to squeeze hands, blink, or move toes.

The current recommendation for TTM in patients resuscitated from out-of-hospital cardiac arrest with a nonshockable rhythm is class I, level of evidence C, meaning it’s based on expert consensus. However, that recommendation is now out of date and due for a level-of-evidence upgrade in light of the recent results of the French HYPERION trial, an open-label randomized trial of 584 patients resuscitated from cardiac arrest with a nonshockable rhythm. Although 90-day mortality was similarly high in the TTM and targeted normothermia groups, the rate of favorable neurologic outcome as assessed by a Cerebral Performance Category scale score of 1 or 2 was 10.2% in the TTM group, significantly better than the 5.7% rate in controls (N Engl J Med. 2019 Dec 12;381[24]:2327-37).

The 2010, ACC/AHA guidelines recommended a TTM range of 32-34 degrees C, but on the basis of subsequent persuasive randomized trial data, that range was broadened to 32-36 degrees C in the 2015 guidelines, with a class IB recommendation. Maintenance of TTM for at least 24 hours has a IIa, level of evidence C recommendation in the current guidelines.

The guidelines emphasize that specific features may favor selection of one temperature for TTM over another. For example, patients with seizures or cerebral edema might be better off with TTM at a lower temperature, while a higher temperature may be best for those with bleeding or severe bradycardia. At Brigham and Women’s Hospital, the default temperature is 33 degrees C. However, TTM with a goal of 36 degrees C is seriously considered in patients with recent head trauma, major surgery within the past 2 weeks, refractory hypotension, severe sepsis, pregnancy, or high bleeding risk. Rewarming is done at a rate of 0.25 degrees C per hour, with sedation maintained until the patient has been returned to 98.6 degrees F, according to Dr. Bohula.

Based on several negative studies of TTM using rapid infusion of chilled fluids in the ambulance en route to the hospital, the guidelines rate that practice class IIIA, meaning don’t do it. Avoidance of a systolic blood pressure below 90 mm Hg and a mean arterial pressure of less than 65 mm Hg gets a class IIb level of evidence C recommendation to lessen the risk of cerebral hypoxia.
 

TTM a major breakthrough

Prior to the introduction of TTM, comatose patients with ROSC after out-of-hospital cardiac arrest had a dreadful prognosis, with survival rates of 1%-10% in registry studies. In contrast, the survival rate in the landmark TTM clinical trials was 50%-60%. And while that’s a dramatic improvement, ROSC after cardiac arrest remains a high-mortality condition. Dr. Bohula was first author of a report by the Critical Care Cardiology Trials Network, composed of 16 tertiary cardiac intensive care units in the United States and Canada. Cardiac arrest was the primary indication for 8.7% of 3,049 consecutive admissions, and its 38% mortality rate was the highest of all cardiac critical care indications (JAMA Cardiol. 2019 Jul 24;4[9]:928-35).

TTM was developed in response to a recognition that two-thirds of deaths in patients who make it to the hospital after out-of-hospital cardiac arrest are neurologic – the result of brain anoxia – rather than being due to the myocardial ischemia that may have initially brought them to medical attention.

“Time is brain cells, the same way we think of time as cardiac muscle,” Dr. Bohula observed.

The main idea behind therapeutic hypothermia is that it lowers the cerebral metabolic rate of oxygen to reduce the consequences of ongoing anoxia. The brain doesn’t require as much perfusion when cooled.

TTM has other beneficial neurologic effects as well: It reduces cerebral blood volume via autoregulation, decreases intracranial pressure, and blunts the inflammatory response involved in the postcardiac arrest syndrome. In addition, TTM has anticonvulsant properties, an important effect because seizures and/or myoclonus occur in up to 15% of adults who achieve ROSC after cardiac arrest – and in even more of those who are comatose after doing so. And seizures increase the brain’s metabolic rate threefold, resulting in more cerebral ischemic injury, she explained.

Seizure activity can be difficult to distinguish from shivering in a patient on TTM. For this reason Dr. Bohula recommends putting patients on continuous EEG monitoring from the time of admission, as is the routine practice at the Brigham.

She reported serving as a consultant to Daiichi Sankyo, Servier, Lexicon, Kowa, Merck, Novartis, Novo Nordisk, and the National Institutes of Health. In addition, she generates institutional research grants provided by a half-dozen pharmaceutical companies.

[email protected]

Women with systemic lupus erythematosus (SLE) who experience hypertensive disorders of pregnancy may have a higher rate of cardiovascular outcomes after pregnancy, as well as a higher rate of hypertension later in life, than do those without maternal hypertension, according to findings from a Swedish population-based, longitudinal cohort study.

“Premature CVD [cardiovascular disease] is a well-documented complication in women with SLE, which is likely, at least in part, due to renal disease, prothrombotic [antiphospholipid antibodies], and systemic inflammation. Our data confirm that women who experience a hypertensive disorder in pregnancy [HDP] are at greater risk of developing hypertension after pregnancy, and that this association is also evident for women with SLE. Women with SLE and HDP were also at increased risk of CVD, particularly stroke, at young ages and should be monitored closely and consider treatment to attenuate risk,” wrote first author Julia F. Simard, ScD, of Stanford (Calif.) University and colleagues in Arthritis Care & Research.

To reach those conclusions, the researchers identified 3,340 women in the Swedish Medical Birth Register with their first singleton delivery during 1987-2012. They matched each of the 450 women with prevalent SLE from the Medical Birth Register to 5 women without SLE in the National Patient Register based on sex, birth year, calendar time, and county of residence.

During a median follow-up period of nearly 11 years, women with SLE had an unadjusted incidence rate of incident cardiovascular outcomes of 50 cases per 10,000 person-years versus 7.2 for women without SLE. Cardiovascular outcomes included fatal and nonfatal acute MI, fatal and nonfatal stroke, transient ischemic attacks, unstable angina, and heart failure. A history of HDP in women with SLE, including preeclampsia, was linked with about a twofold higher rate of cardiovascular outcomes regardless of multiple sensitivity analyses, both before and after adjusting for maternal age at delivery, county of birth, education, body mass index, and first-trimester smoking.

The researchers found that the hazard ratio for cardiovascular outcomes in women with SLE and HDP was about eight times higher than the hazard ratio for women without SLE but with HDP, but the relative rarity of cardiovascular events seen during the follow-up period, particularly among women without SLE, made it so that they “could not confirm established associations between HDP and CVD, possibly due to the relatively short follow-up time given that premenopausal CVD is rare among women free of SLE.”

HDP was associated with a threefold higher risk for incident hypertension later in life regardless of SLE status, even though the unadjusted incidence rate was 524 cases per 10,000 person-years among women with both SLE and HDP, compared with 177 per 10,000 person-years among women with HDP in the general population, which sensitivity analyses suggested “was not due to misclassification of antihypertensive use for renal disease in women with SLE nor antihypertensive use for possible HDP in subsequent pregnancies,” the researchers wrote.

Several authors reported research grants from the National Institutes of Health, the Karolinska Institute, the Swedish Research Council, Swedish Heart-Lung Foundation, Stockholm County Council, the King Gustaf V 80th Birthday Fund, the Swedish Rheumatism Association, and Ingegerd Johansson’s Foundation that helped to fund the study. All authors reported having no competing interests.

[email protected]

SOURCE: Simard JF et al. Arthritis Care Res. 2020 Jan 31. doi: 10.1002/acr.24160.

Women with systemic lupus erythematosus (SLE) who experience hypertensive disorders of pregnancy may have a higher rate of cardiovascular outcomes after pregnancy, as well as a higher rate of hypertension later in life, than do those without maternal hypertension, according to findings from a Swedish population-based, longitudinal cohort study.

“Premature CVD [cardiovascular disease] is a well-documented complication in women with SLE, which is likely, at least in part, due to renal disease, prothrombotic [antiphospholipid antibodies], and systemic inflammation. Our data confirm that women who experience a hypertensive disorder in pregnancy [HDP] are at greater risk of developing hypertension after pregnancy, and that this association is also evident for women with SLE. Women with SLE and HDP were also at increased risk of CVD, particularly stroke, at young ages and should be monitored closely and consider treatment to attenuate risk,” wrote first author Julia F. Simard, ScD, of Stanford (Calif.) University and colleagues in Arthritis Care & Research.

To reach those conclusions, the researchers identified 3,340 women in the Swedish Medical Birth Register with their first singleton delivery during 1987-2012. They matched each of the 450 women with prevalent SLE from the Medical Birth Register to 5 women without SLE in the National Patient Register based on sex, birth year, calendar time, and county of residence.

During a median follow-up period of nearly 11 years, women with SLE had an unadjusted incidence rate of incident cardiovascular outcomes of 50 cases per 10,000 person-years versus 7.2 for women without SLE. Cardiovascular outcomes included fatal and nonfatal acute MI, fatal and nonfatal stroke, transient ischemic attacks, unstable angina, and heart failure. A history of HDP in women with SLE, including preeclampsia, was linked with about a twofold higher rate of cardiovascular outcomes regardless of multiple sensitivity analyses, both before and after adjusting for maternal age at delivery, county of birth, education, body mass index, and first-trimester smoking.

The researchers found that the hazard ratio for cardiovascular outcomes in women with SLE and HDP was about eight times higher than the hazard ratio for women without SLE but with HDP, but the relative rarity of cardiovascular events seen during the follow-up period, particularly among women without SLE, made it so that they “could not confirm established associations between HDP and CVD, possibly due to the relatively short follow-up time given that premenopausal CVD is rare among women free of SLE.”

HDP was associated with a threefold higher risk for incident hypertension later in life regardless of SLE status, even though the unadjusted incidence rate was 524 cases per 10,000 person-years among women with both SLE and HDP, compared with 177 per 10,000 person-years among women with HDP in the general population, which sensitivity analyses suggested “was not due to misclassification of antihypertensive use for renal disease in women with SLE nor antihypertensive use for possible HDP in subsequent pregnancies,” the researchers wrote.

Several authors reported research grants from the National Institutes of Health, the Karolinska Institute, the Swedish Research Council, Swedish Heart-Lung Foundation, Stockholm County Council, the King Gustaf V 80th Birthday Fund, the Swedish Rheumatism Association, and Ingegerd Johansson’s Foundation that helped to fund the study. All authors reported having no competing interests.

[email protected]

SOURCE: Simard JF et al. Arthritis Care Res. 2020 Jan 31. doi: 10.1002/acr.24160.

Women with systemic lupus erythematosus (SLE) who experience hypertensive disorders of pregnancy may have a higher rate of cardiovascular outcomes after pregnancy, as well as a higher rate of hypertension later in life, than do those without maternal hypertension, according to findings from a Swedish population-based, longitudinal cohort study.

“Premature CVD [cardiovascular disease] is a well-documented complication in women with SLE, which is likely, at least in part, due to renal disease, prothrombotic [antiphospholipid antibodies], and systemic inflammation. Our data confirm that women who experience a hypertensive disorder in pregnancy [HDP] are at greater risk of developing hypertension after pregnancy, and that this association is also evident for women with SLE. Women with SLE and HDP were also at increased risk of CVD, particularly stroke, at young ages and should be monitored closely and consider treatment to attenuate risk,” wrote first author Julia F. Simard, ScD, of Stanford (Calif.) University and colleagues in Arthritis Care & Research.

To reach those conclusions, the researchers identified 3,340 women in the Swedish Medical Birth Register with their first singleton delivery during 1987-2012. They matched each of the 450 women with prevalent SLE from the Medical Birth Register to 5 women without SLE in the National Patient Register based on sex, birth year, calendar time, and county of residence.

During a median follow-up period of nearly 11 years, women with SLE had an unadjusted incidence rate of incident cardiovascular outcomes of 50 cases per 10,000 person-years versus 7.2 for women without SLE. Cardiovascular outcomes included fatal and nonfatal acute MI, fatal and nonfatal stroke, transient ischemic attacks, unstable angina, and heart failure. A history of HDP in women with SLE, including preeclampsia, was linked with about a twofold higher rate of cardiovascular outcomes regardless of multiple sensitivity analyses, both before and after adjusting for maternal age at delivery, county of birth, education, body mass index, and first-trimester smoking.

The researchers found that the hazard ratio for cardiovascular outcomes in women with SLE and HDP was about eight times higher than the hazard ratio for women without SLE but with HDP, but the relative rarity of cardiovascular events seen during the follow-up period, particularly among women without SLE, made it so that they “could not confirm established associations between HDP and CVD, possibly due to the relatively short follow-up time given that premenopausal CVD is rare among women free of SLE.”

HDP was associated with a threefold higher risk for incident hypertension later in life regardless of SLE status, even though the unadjusted incidence rate was 524 cases per 10,000 person-years among women with both SLE and HDP, compared with 177 per 10,000 person-years among women with HDP in the general population, which sensitivity analyses suggested “was not due to misclassification of antihypertensive use for renal disease in women with SLE nor antihypertensive use for possible HDP in subsequent pregnancies,” the researchers wrote.

Several authors reported research grants from the National Institutes of Health, the Karolinska Institute, the Swedish Research Council, Swedish Heart-Lung Foundation, Stockholm County Council, the King Gustaf V 80th Birthday Fund, the Swedish Rheumatism Association, and Ingegerd Johansson’s Foundation that helped to fund the study. All authors reported having no competing interests.

[email protected]

SOURCE: Simard JF et al. Arthritis Care Res. 2020 Jan 31. doi: 10.1002/acr.24160.

For lung cancer patients with moderately decreased lung function, the 6-minute walk test may be a useful tool to help predict postoperative cardiopulmonary complications, researchers have found.

Risk of cardiopulmonary complications increased nearly eightfold in patients with moderate lung function decreases who failed to walk 400 m or more, according to the study, which included data on 416 patients with non–small cell lung cancer (NSCLC) who underwent lobectomy.

This is believed to be the first large study evaluating the utility of the 6-minute walk test (6MWT) to predict postoperative cardiopulmonary complications in this surgical setting, according to researchers led by Hyun Lee, MD, of Hanyang University in Seoul, South Korea. 

“Our findings suggest that 6-minute walk distance would provide additional information in lung cancer patients with moderately decreased lung function who plan to undergo surgical resection,” said Dr. Lee and coauthors of the study report, which appears in CHEST.

More specifically, the option of curative resection should be considered in those lung cancer patients with moderately decreased lung function but a longer 6-minute walk distance, they added.

Exercise testing is currently recommended to further stratify risk of postoperative complications among patient with moderately decreased lung function, according to the researchers. The 6-minute walk test might be a good tool to evaluate feasibility for moderate risk patients, according to one recent review. However, studies so far have been limited by small numbers of patients, and larger studies have not specifically looked at predicted postoperative lung function status, they said.

Accordingly, the researchers evaluated data from patients expected to undergo curative lung cancer surgery who were enrolled in a prospective cohort study in Korea. They were classified as low or moderate risk based on pulmonary function tests, and further classified into short distance (less than 400 m) and long distance (400 m or more) groups based on their performance on the 6-minute walk test. 

Postoperative cardiopulmonary complications were seen in 42.9% of the moderate-risk, short-distance group, versus 14.4% of patients in the moderate-risk, long-distance group. In the low-risk patients, those complications were seen in 9.5% and 8.3% of those in the long and short distance groups.

Odds for postoperative cardiopulmonary complications were significantly increased in the moderate-risk, short-distance group, compared with the low-risk, long-distance group (adjusted odds ratio, 7.84; 95% confidence interval, 2.24-27.46).

By contrast, odds for complications were not significantly increased in the moderate-risk, long-distance group, nor in the low-risk, short-distance groups, investigators said.

Dr. Lee and coauthors said they had no conflicts of interest to disclose.

SOURCE: Lee H et al. CHEST. 2020. doi: 10.1016/j.chest.2019.12.039.

For lung cancer patients with moderately decreased lung function, the 6-minute walk test may be a useful tool to help predict postoperative cardiopulmonary complications, researchers have found.

Risk of cardiopulmonary complications increased nearly eightfold in patients with moderate lung function decreases who failed to walk 400 m or more, according to the study, which included data on 416 patients with non–small cell lung cancer (NSCLC) who underwent lobectomy.

This is believed to be the first large study evaluating the utility of the 6-minute walk test (6MWT) to predict postoperative cardiopulmonary complications in this surgical setting, according to researchers led by Hyun Lee, MD, of Hanyang University in Seoul, South Korea. 

“Our findings suggest that 6-minute walk distance would provide additional information in lung cancer patients with moderately decreased lung function who plan to undergo surgical resection,” said Dr. Lee and coauthors of the study report, which appears in CHEST.

More specifically, the option of curative resection should be considered in those lung cancer patients with moderately decreased lung function but a longer 6-minute walk distance, they added.

Exercise testing is currently recommended to further stratify risk of postoperative complications among patient with moderately decreased lung function, according to the researchers. The 6-minute walk test might be a good tool to evaluate feasibility for moderate risk patients, according to one recent review. However, studies so far have been limited by small numbers of patients, and larger studies have not specifically looked at predicted postoperative lung function status, they said.

Accordingly, the researchers evaluated data from patients expected to undergo curative lung cancer surgery who were enrolled in a prospective cohort study in Korea. They were classified as low or moderate risk based on pulmonary function tests, and further classified into short distance (less than 400 m) and long distance (400 m or more) groups based on their performance on the 6-minute walk test. 

Postoperative cardiopulmonary complications were seen in 42.9% of the moderate-risk, short-distance group, versus 14.4% of patients in the moderate-risk, long-distance group. In the low-risk patients, those complications were seen in 9.5% and 8.3% of those in the long and short distance groups.

Odds for postoperative cardiopulmonary complications were significantly increased in the moderate-risk, short-distance group, compared with the low-risk, long-distance group (adjusted odds ratio, 7.84; 95% confidence interval, 2.24-27.46).

By contrast, odds for complications were not significantly increased in the moderate-risk, long-distance group, nor in the low-risk, short-distance groups, investigators said.

Dr. Lee and coauthors said they had no conflicts of interest to disclose.

SOURCE: Lee H et al. CHEST. 2020. doi: 10.1016/j.chest.2019.12.039.

For lung cancer patients with moderately decreased lung function, the 6-minute walk test may be a useful tool to help predict postoperative cardiopulmonary complications, researchers have found.

Risk of cardiopulmonary complications increased nearly eightfold in patients with moderate lung function decreases who failed to walk 400 m or more, according to the study, which included data on 416 patients with non–small cell lung cancer (NSCLC) who underwent lobectomy.

This is believed to be the first large study evaluating the utility of the 6-minute walk test (6MWT) to predict postoperative cardiopulmonary complications in this surgical setting, according to researchers led by Hyun Lee, MD, of Hanyang University in Seoul, South Korea. 

“Our findings suggest that 6-minute walk distance would provide additional information in lung cancer patients with moderately decreased lung function who plan to undergo surgical resection,” said Dr. Lee and coauthors of the study report, which appears in CHEST.

More specifically, the option of curative resection should be considered in those lung cancer patients with moderately decreased lung function but a longer 6-minute walk distance, they added.

Exercise testing is currently recommended to further stratify risk of postoperative complications among patient with moderately decreased lung function, according to the researchers. The 6-minute walk test might be a good tool to evaluate feasibility for moderate risk patients, according to one recent review. However, studies so far have been limited by small numbers of patients, and larger studies have not specifically looked at predicted postoperative lung function status, they said.

Accordingly, the researchers evaluated data from patients expected to undergo curative lung cancer surgery who were enrolled in a prospective cohort study in Korea. They were classified as low or moderate risk based on pulmonary function tests, and further classified into short distance (less than 400 m) and long distance (400 m or more) groups based on their performance on the 6-minute walk test. 

Postoperative cardiopulmonary complications were seen in 42.9% of the moderate-risk, short-distance group, versus 14.4% of patients in the moderate-risk, long-distance group. In the low-risk patients, those complications were seen in 9.5% and 8.3% of those in the long and short distance groups.

Odds for postoperative cardiopulmonary complications were significantly increased in the moderate-risk, short-distance group, compared with the low-risk, long-distance group (adjusted odds ratio, 7.84; 95% confidence interval, 2.24-27.46).

By contrast, odds for complications were not significantly increased in the moderate-risk, long-distance group, nor in the low-risk, short-distance groups, investigators said.

Dr. Lee and coauthors said they had no conflicts of interest to disclose.

SOURCE: Lee H et al. CHEST. 2020. doi: 10.1016/j.chest.2019.12.039.

SNOWMASS, COLO. – The tragic opioid epidemic has “one small bright spot”: an expanding pool of eligible donor hearts for transplantation, Akshay S. Desai, MD, said at the annual Cardiovascular Conference at Snowmass sponsored by the American College of Cardiology.

Bruce Jancin/MDedge News

For decades, the annual volume of heart transplantations performed in the U.S. was static because of the huge mismatch between donor organ supply and demand. But heart transplant volume has increased steadily in the last few years – a result of the opioid epidemic.

Data from the U.S. Organ Procurement and Transplantation Network show that the proportion of donor hearts obtained from individuals who died from drug intoxication climbed from a mere 1.5% in 1999 to 17.6% in 2017, the most recent year for which data are available. Meanwhile, the size of the heart transplant waiting list, which rose year after year in 2009-2015, has since declined (N Engl J Med. 2019 Feb 7;380[6]:597-9).

“What’s amazing is that, even though these patients might have historically been considered high risk in general, the organs recovered from these patients – and particularly the hearts – don’t seem to be any worse in terms of allograft survival than the organs recovered from patients who died from other causes, which are the traditional sources, like blunt head trauma, gunshot wounds, or stroke, that lead to brain death. In general, these organs are useful and do quite well,” according to Dr. Desai, medical director of the cardiomyopathy and heart failure program at Brigham and Women’s Hospital, Boston.

He highlighted several other recent developments in the field of cardiac transplantation that promise to further expand the donor heart pool, including acceptance of hepatitis C–infected donors and organ donation after circulatory rather than brain death. Dr. Desai also drew attention to the unintended perverse consequences of a recent redesign of the U.S. donor heart allocation system and discussed the impressive improvement in clinical outcomes with mechanical circulatory support. He noted that, while relatively few cardiologists practice in the highly specialized centers where heart transplants take place, virtually all cardiologists are affected by advances in heart transplantation since hundreds of thousands of the estimated 7 million Americans with heart failure have advanced disease.

Heart transplantation, he emphasized, is becoming increasingly complex. Recipients are on average older, sicker, and have more comorbidities than in times past. As a result, there is greater need for dual organ transplants: heart/lung, heart/liver, or heart/kidney. Plus, more patients come to transplantation after prior cardiac surgery for implantation of a ventricular assist device, so sensitization to blood products is a growing issue. And, of course, the pool of transplant candidates has expanded.

“We’re now forced to take patients previously considered to have contraindications to transplant; for example, diabetes was a contraindication to transplant in the early years, but now it’s the rule in 35%-40% of our patients who present with advanced heart failure,” the cardiologist noted.
 

Transplants from HCV-infected donors to uninfected recipients

Hearts and lungs from donors with hepatitis C viremia were traditionally deemed unsuitable for transplant. That’s all changed in the current era of highly effective direct-acting antiviral agents for the treatment of HCV infection.

In the DONATE HCV trial, Dr. Desai’s colleagues at Brigham and Women’s Hospital showed that giving HCV-uninfected recipients of hearts or lungs from HCV-viremic donors a shortened 4-week course of treatment with sofosbuvir-velpatasvir (Epclusa) beginning within a few hours after transplantation uniformly blocked viral replication. Six months after transplantation, none of the study participants had a detectable HCV viral load, and all had excellent graft function (N Engl J Med. 2019 Apr 25;380[17]:1606-17).

“This is effective prevention of HCV infection by aggressive upfront therapy,” Dr. Desai explained. “We can now take organs from HCV-viremic patients and use them in solid organ transplantation. This has led to a skyrocketing increase in donors with HCV infection, and those donations have helped us clear the waiting list.”
 

Donation after circulatory death

Australian transplant physicians have pioneered the use of donor hearts obtained after circulatory death in individuals with devastating neurologic injury who didn’t quite meet the criteria for brain death, which is the traditional prerequisite. In the new scenario, withdrawal of life-supporting therapy is followed by circulatory death, then the donor heart is procured and preserved via extracorporeal perfusion until transplantation.

The Australians report excellent outcomes, with rates of overall survival and rejection episodes similar to outcomes from brain-dead donors (J Am Coll Cardiol. 2019 Apr 2;73[12]:1447-59). The first U.S. heart transplant involving donation after circulatory death took place at Duke University in Durham, North Carolina. A multicenter U.S. clinical trial of this practice is underway.

If the results are positive and the practice of donation after circulatory death becomes widely implemented, the U.S. heart donor pool could increase by 30%.
 

Recent overhaul of donor heart allocation system may have backfired

The U.S. donor heart allocation system was redesigned in the fall of 2018 in an effort to reduce waiting times. One of the biggest changes involved breaking down the category with the highest urgency status into three new subcategories based upon sickness. Now, the highest-urgency category is for patients in cardiogenic shock who are supported by extracorporeal membrane oxygenation (ECMO) or other temporary mechanical circulatory support devices.

But an analysis of United Network for Organ Sharing (UNOS) data suggests this change has unintended adverse consequences for clinical outcomes.

Indeed, the investigators reported that the use of ECMO support is fourfold greater in the new system, the use of durable left ventricular assist devices (LVADs) as a bridge to transplant is down, and outcomes are worse. The 180-day rate of freedom from death or retransplantation was 77.9%, down significantly from 93.4% in the former system. In a multivariate analysis, patients transplanted in the new system had an adjusted 2.1-fold increased risk of death or retransplantation (J Heart Lung Transplant. 2020 Jan;39[1]:1-4).

“When you create a new listing system, you create new incentives, and people start to manage patients differently,” Dr. Desai observed. “Increasingly now, the path direct to transplant is through temporary mechanical circulatory support rather than durable mechanical circulatory support. Is that a good idea? We don’t know, but if you look at the best data, those on ECMO or percutaneous VADs have the worst outcomes. So the question of whether we should take the sickest of sick patients directly to transplant as a standard strategy has come under scrutiny.”
 

Improved durable LVAD technology brings impressive clinical outcomes

Results of the landmark MOMENTUM 3 randomized trial showed that 2-year clinical outcomes with the magnetically levitated centrifugal-flow HeartMate 3 LVAD now rival those of percutaneous mitral valve repair using the MitraClip device. Two-year all-cause mortality in the LVAD recipients was 22% versus 29.1% with the MitraClip in the COAPT trial and 34.9% in the MITRA-FR trial. The HeartMate 3 reduces the hemocompatibility issues that plagued earlier-generation durable LVADs, with resultant lower rates of pump thrombosis, stroke, and GI bleeding. Indeed, the outcomes in MOMENTUM 3 were so good – and so similar – with the HeartMate 3, regardless of whether the intended treatment goal was as a bridge to transplant or as lifelong destination therapy, that the investigators have recently proposed doing away with those distinctions.

“It is possible that use of arbitrary categorizations based on current or future transplant eligibility should be clinically abandoned in favor of a single preimplant strategy: to extend the survival and improve the quality of life of patients with medically refractory heart failure,” according to the investigators (JAMA Cardiol. 2020 Jan 15. doi: 10.1001/jamacardio.2019.5323).

The next step forward in LVAD technology is already on the horizon: a fully implantable device that eliminates the transcutaneous drive-line for the power supply, which is prone to infection and diminishes overall quality of life. This investigational device utilizes wireless coplanar energy transfer, with a coil ring placed around the lung and fixed to the chest wall. The implanted battery provides more than 6 hours of power without a recharge (J Heart Lung Transplant. 2019 Apr;38[4]:339-43).

“The first LVAD patient has gone swimming in Kazakhstan,” according to Dr. Desai.

Myocardial recovery in LVAD recipients remains elusive

The initial hope for LVADs was that they would not only be able to serve as a bridge to transplantation or as lifetime therapy, but that the prolonged unloading of the ventricle would enable potent medical therapy to rescue myocardial function so that the device could eventually be explanted. That does happen, but only rarely. In a large registry study, myocardial recovery occurred in only about 1% of patients on mechanical circulatory support. Attempts to enhance the process by add-on stem cell therapy have thus far been ineffective.

“For the moment, recovery is still a hope, not a reality,” the cardiologist said.

He reported serving as a consultant to more than a dozen pharmaceutical or medical device companies and receiving research grants from Alnylam, AstraZeneca, Bayer Healthcare, MyoKardia, and Novartis.

[email protected]
 

SNOWMASS, COLO. – The tragic opioid epidemic has “one small bright spot”: an expanding pool of eligible donor hearts for transplantation, Akshay S. Desai, MD, said at the annual Cardiovascular Conference at Snowmass sponsored by the American College of Cardiology.

Bruce Jancin/MDedge News

For decades, the annual volume of heart transplantations performed in the U.S. was static because of the huge mismatch between donor organ supply and demand. But heart transplant volume has increased steadily in the last few years – a result of the opioid epidemic.

Data from the U.S. Organ Procurement and Transplantation Network show that the proportion of donor hearts obtained from individuals who died from drug intoxication climbed from a mere 1.5% in 1999 to 17.6% in 2017, the most recent year for which data are available. Meanwhile, the size of the heart transplant waiting list, which rose year after year in 2009-2015, has since declined (N Engl J Med. 2019 Feb 7;380[6]:597-9).

“What’s amazing is that, even though these patients might have historically been considered high risk in general, the organs recovered from these patients – and particularly the hearts – don’t seem to be any worse in terms of allograft survival than the organs recovered from patients who died from other causes, which are the traditional sources, like blunt head trauma, gunshot wounds, or stroke, that lead to brain death. In general, these organs are useful and do quite well,” according to Dr. Desai, medical director of the cardiomyopathy and heart failure program at Brigham and Women’s Hospital, Boston.

He highlighted several other recent developments in the field of cardiac transplantation that promise to further expand the donor heart pool, including acceptance of hepatitis C–infected donors and organ donation after circulatory rather than brain death. Dr. Desai also drew attention to the unintended perverse consequences of a recent redesign of the U.S. donor heart allocation system and discussed the impressive improvement in clinical outcomes with mechanical circulatory support. He noted that, while relatively few cardiologists practice in the highly specialized centers where heart transplants take place, virtually all cardiologists are affected by advances in heart transplantation since hundreds of thousands of the estimated 7 million Americans with heart failure have advanced disease.

Heart transplantation, he emphasized, is becoming increasingly complex. Recipients are on average older, sicker, and have more comorbidities than in times past. As a result, there is greater need for dual organ transplants: heart/lung, heart/liver, or heart/kidney. Plus, more patients come to transplantation after prior cardiac surgery for implantation of a ventricular assist device, so sensitization to blood products is a growing issue. And, of course, the pool of transplant candidates has expanded.

“We’re now forced to take patients previously considered to have contraindications to transplant; for example, diabetes was a contraindication to transplant in the early years, but now it’s the rule in 35%-40% of our patients who present with advanced heart failure,” the cardiologist noted.
 

Transplants from HCV-infected donors to uninfected recipients

Hearts and lungs from donors with hepatitis C viremia were traditionally deemed unsuitable for transplant. That’s all changed in the current era of highly effective direct-acting antiviral agents for the treatment of HCV infection.

In the DONATE HCV trial, Dr. Desai’s colleagues at Brigham and Women’s Hospital showed that giving HCV-uninfected recipients of hearts or lungs from HCV-viremic donors a shortened 4-week course of treatment with sofosbuvir-velpatasvir (Epclusa) beginning within a few hours after transplantation uniformly blocked viral replication. Six months after transplantation, none of the study participants had a detectable HCV viral load, and all had excellent graft function (N Engl J Med. 2019 Apr 25;380[17]:1606-17).

“This is effective prevention of HCV infection by aggressive upfront therapy,” Dr. Desai explained. “We can now take organs from HCV-viremic patients and use them in solid organ transplantation. This has led to a skyrocketing increase in donors with HCV infection, and those donations have helped us clear the waiting list.”
 

Donation after circulatory death

Australian transplant physicians have pioneered the use of donor hearts obtained after circulatory death in individuals with devastating neurologic injury who didn’t quite meet the criteria for brain death, which is the traditional prerequisite. In the new scenario, withdrawal of life-supporting therapy is followed by circulatory death, then the donor heart is procured and preserved via extracorporeal perfusion until transplantation.

The Australians report excellent outcomes, with rates of overall survival and rejection episodes similar to outcomes from brain-dead donors (J Am Coll Cardiol. 2019 Apr 2;73[12]:1447-59). The first U.S. heart transplant involving donation after circulatory death took place at Duke University in Durham, North Carolina. A multicenter U.S. clinical trial of this practice is underway.

If the results are positive and the practice of donation after circulatory death becomes widely implemented, the U.S. heart donor pool could increase by 30%.
 

Recent overhaul of donor heart allocation system may have backfired

The U.S. donor heart allocation system was redesigned in the fall of 2018 in an effort to reduce waiting times. One of the biggest changes involved breaking down the category with the highest urgency status into three new subcategories based upon sickness. Now, the highest-urgency category is for patients in cardiogenic shock who are supported by extracorporeal membrane oxygenation (ECMO) or other temporary mechanical circulatory support devices.

But an analysis of United Network for Organ Sharing (UNOS) data suggests this change has unintended adverse consequences for clinical outcomes.

Indeed, the investigators reported that the use of ECMO support is fourfold greater in the new system, the use of durable left ventricular assist devices (LVADs) as a bridge to transplant is down, and outcomes are worse. The 180-day rate of freedom from death or retransplantation was 77.9%, down significantly from 93.4% in the former system. In a multivariate analysis, patients transplanted in the new system had an adjusted 2.1-fold increased risk of death or retransplantation (J Heart Lung Transplant. 2020 Jan;39[1]:1-4).

“When you create a new listing system, you create new incentives, and people start to manage patients differently,” Dr. Desai observed. “Increasingly now, the path direct to transplant is through temporary mechanical circulatory support rather than durable mechanical circulatory support. Is that a good idea? We don’t know, but if you look at the best data, those on ECMO or percutaneous VADs have the worst outcomes. So the question of whether we should take the sickest of sick patients directly to transplant as a standard strategy has come under scrutiny.”
 

Improved durable LVAD technology brings impressive clinical outcomes

Results of the landmark MOMENTUM 3 randomized trial showed that 2-year clinical outcomes with the magnetically levitated centrifugal-flow HeartMate 3 LVAD now rival those of percutaneous mitral valve repair using the MitraClip device. Two-year all-cause mortality in the LVAD recipients was 22% versus 29.1% with the MitraClip in the COAPT trial and 34.9% in the MITRA-FR trial. The HeartMate 3 reduces the hemocompatibility issues that plagued earlier-generation durable LVADs, with resultant lower rates of pump thrombosis, stroke, and GI bleeding. Indeed, the outcomes in MOMENTUM 3 were so good – and so similar – with the HeartMate 3, regardless of whether the intended treatment goal was as a bridge to transplant or as lifelong destination therapy, that the investigators have recently proposed doing away with those distinctions.

“It is possible that use of arbitrary categorizations based on current or future transplant eligibility should be clinically abandoned in favor of a single preimplant strategy: to extend the survival and improve the quality of life of patients with medically refractory heart failure,” according to the investigators (JAMA Cardiol. 2020 Jan 15. doi: 10.1001/jamacardio.2019.5323).

The next step forward in LVAD technology is already on the horizon: a fully implantable device that eliminates the transcutaneous drive-line for the power supply, which is prone to infection and diminishes overall quality of life. This investigational device utilizes wireless coplanar energy transfer, with a coil ring placed around the lung and fixed to the chest wall. The implanted battery provides more than 6 hours of power without a recharge (J Heart Lung Transplant. 2019 Apr;38[4]:339-43).

“The first LVAD patient has gone swimming in Kazakhstan,” according to Dr. Desai.

Myocardial recovery in LVAD recipients remains elusive

The initial hope for LVADs was that they would not only be able to serve as a bridge to transplantation or as lifetime therapy, but that the prolonged unloading of the ventricle would enable potent medical therapy to rescue myocardial function so that the device could eventually be explanted. That does happen, but only rarely. In a large registry study, myocardial recovery occurred in only about 1% of patients on mechanical circulatory support. Attempts to enhance the process by add-on stem cell therapy have thus far been ineffective.

“For the moment, recovery is still a hope, not a reality,” the cardiologist said.

He reported serving as a consultant to more than a dozen pharmaceutical or medical device companies and receiving research grants from Alnylam, AstraZeneca, Bayer Healthcare, MyoKardia, and Novartis.

[email protected]
 

SNOWMASS, COLO. – The tragic opioid epidemic has “one small bright spot”: an expanding pool of eligible donor hearts for transplantation, Akshay S. Desai, MD, said at the annual Cardiovascular Conference at Snowmass sponsored by the American College of Cardiology.

Bruce Jancin/MDedge News

For decades, the annual volume of heart transplantations performed in the U.S. was static because of the huge mismatch between donor organ supply and demand. But heart transplant volume has increased steadily in the last few years – a result of the opioid epidemic.

Data from the U.S. Organ Procurement and Transplantation Network show that the proportion of donor hearts obtained from individuals who died from drug intoxication climbed from a mere 1.5% in 1999 to 17.6% in 2017, the most recent year for which data are available. Meanwhile, the size of the heart transplant waiting list, which rose year after year in 2009-2015, has since declined (N Engl J Med. 2019 Feb 7;380[6]:597-9).

“What’s amazing is that, even though these patients might have historically been considered high risk in general, the organs recovered from these patients – and particularly the hearts – don’t seem to be any worse in terms of allograft survival than the organs recovered from patients who died from other causes, which are the traditional sources, like blunt head trauma, gunshot wounds, or stroke, that lead to brain death. In general, these organs are useful and do quite well,” according to Dr. Desai, medical director of the cardiomyopathy and heart failure program at Brigham and Women’s Hospital, Boston.

He highlighted several other recent developments in the field of cardiac transplantation that promise to further expand the donor heart pool, including acceptance of hepatitis C–infected donors and organ donation after circulatory rather than brain death. Dr. Desai also drew attention to the unintended perverse consequences of a recent redesign of the U.S. donor heart allocation system and discussed the impressive improvement in clinical outcomes with mechanical circulatory support. He noted that, while relatively few cardiologists practice in the highly specialized centers where heart transplants take place, virtually all cardiologists are affected by advances in heart transplantation since hundreds of thousands of the estimated 7 million Americans with heart failure have advanced disease.

Heart transplantation, he emphasized, is becoming increasingly complex. Recipients are on average older, sicker, and have more comorbidities than in times past. As a result, there is greater need for dual organ transplants: heart/lung, heart/liver, or heart/kidney. Plus, more patients come to transplantation after prior cardiac surgery for implantation of a ventricular assist device, so sensitization to blood products is a growing issue. And, of course, the pool of transplant candidates has expanded.

“We’re now forced to take patients previously considered to have contraindications to transplant; for example, diabetes was a contraindication to transplant in the early years, but now it’s the rule in 35%-40% of our patients who present with advanced heart failure,” the cardiologist noted.
 

Transplants from HCV-infected donors to uninfected recipients

Hearts and lungs from donors with hepatitis C viremia were traditionally deemed unsuitable for transplant. That’s all changed in the current era of highly effective direct-acting antiviral agents for the treatment of HCV infection.

In the DONATE HCV trial, Dr. Desai’s colleagues at Brigham and Women’s Hospital showed that giving HCV-uninfected recipients of hearts or lungs from HCV-viremic donors a shortened 4-week course of treatment with sofosbuvir-velpatasvir (Epclusa) beginning within a few hours after transplantation uniformly blocked viral replication. Six months after transplantation, none of the study participants had a detectable HCV viral load, and all had excellent graft function (N Engl J Med. 2019 Apr 25;380[17]:1606-17).

“This is effective prevention of HCV infection by aggressive upfront therapy,” Dr. Desai explained. “We can now take organs from HCV-viremic patients and use them in solid organ transplantation. This has led to a skyrocketing increase in donors with HCV infection, and those donations have helped us clear the waiting list.”
 

Donation after circulatory death

Australian transplant physicians have pioneered the use of donor hearts obtained after circulatory death in individuals with devastating neurologic injury who didn’t quite meet the criteria for brain death, which is the traditional prerequisite. In the new scenario, withdrawal of life-supporting therapy is followed by circulatory death, then the donor heart is procured and preserved via extracorporeal perfusion until transplantation.

The Australians report excellent outcomes, with rates of overall survival and rejection episodes similar to outcomes from brain-dead donors (J Am Coll Cardiol. 2019 Apr 2;73[12]:1447-59). The first U.S. heart transplant involving donation after circulatory death took place at Duke University in Durham, North Carolina. A multicenter U.S. clinical trial of this practice is underway.

If the results are positive and the practice of donation after circulatory death becomes widely implemented, the U.S. heart donor pool could increase by 30%.
 

Recent overhaul of donor heart allocation system may have backfired

The U.S. donor heart allocation system was redesigned in the fall of 2018 in an effort to reduce waiting times. One of the biggest changes involved breaking down the category with the highest urgency status into three new subcategories based upon sickness. Now, the highest-urgency category is for patients in cardiogenic shock who are supported by extracorporeal membrane oxygenation (ECMO) or other temporary mechanical circulatory support devices.

But an analysis of United Network for Organ Sharing (UNOS) data suggests this change has unintended adverse consequences for clinical outcomes.

Indeed, the investigators reported that the use of ECMO support is fourfold greater in the new system, the use of durable left ventricular assist devices (LVADs) as a bridge to transplant is down, and outcomes are worse. The 180-day rate of freedom from death or retransplantation was 77.9%, down significantly from 93.4% in the former system. In a multivariate analysis, patients transplanted in the new system had an adjusted 2.1-fold increased risk of death or retransplantation (J Heart Lung Transplant. 2020 Jan;39[1]:1-4).

“When you create a new listing system, you create new incentives, and people start to manage patients differently,” Dr. Desai observed. “Increasingly now, the path direct to transplant is through temporary mechanical circulatory support rather than durable mechanical circulatory support. Is that a good idea? We don’t know, but if you look at the best data, those on ECMO or percutaneous VADs have the worst outcomes. So the question of whether we should take the sickest of sick patients directly to transplant as a standard strategy has come under scrutiny.”
 

Improved durable LVAD technology brings impressive clinical outcomes

Results of the landmark MOMENTUM 3 randomized trial showed that 2-year clinical outcomes with the magnetically levitated centrifugal-flow HeartMate 3 LVAD now rival those of percutaneous mitral valve repair using the MitraClip device. Two-year all-cause mortality in the LVAD recipients was 22% versus 29.1% with the MitraClip in the COAPT trial and 34.9% in the MITRA-FR trial. The HeartMate 3 reduces the hemocompatibility issues that plagued earlier-generation durable LVADs, with resultant lower rates of pump thrombosis, stroke, and GI bleeding. Indeed, the outcomes in MOMENTUM 3 were so good – and so similar – with the HeartMate 3, regardless of whether the intended treatment goal was as a bridge to transplant or as lifelong destination therapy, that the investigators have recently proposed doing away with those distinctions.

“It is possible that use of arbitrary categorizations based on current or future transplant eligibility should be clinically abandoned in favor of a single preimplant strategy: to extend the survival and improve the quality of life of patients with medically refractory heart failure,” according to the investigators (JAMA Cardiol. 2020 Jan 15. doi: 10.1001/jamacardio.2019.5323).

The next step forward in LVAD technology is already on the horizon: a fully implantable device that eliminates the transcutaneous drive-line for the power supply, which is prone to infection and diminishes overall quality of life. This investigational device utilizes wireless coplanar energy transfer, with a coil ring placed around the lung and fixed to the chest wall. The implanted battery provides more than 6 hours of power without a recharge (J Heart Lung Transplant. 2019 Apr;38[4]:339-43).

“The first LVAD patient has gone swimming in Kazakhstan,” according to Dr. Desai.

Myocardial recovery in LVAD recipients remains elusive

The initial hope for LVADs was that they would not only be able to serve as a bridge to transplantation or as lifetime therapy, but that the prolonged unloading of the ventricle would enable potent medical therapy to rescue myocardial function so that the device could eventually be explanted. That does happen, but only rarely. In a large registry study, myocardial recovery occurred in only about 1% of patients on mechanical circulatory support. Attempts to enhance the process by add-on stem cell therapy have thus far been ineffective.

“For the moment, recovery is still a hope, not a reality,” the cardiologist said.

He reported serving as a consultant to more than a dozen pharmaceutical or medical device companies and receiving research grants from Alnylam, AstraZeneca, Bayer Healthcare, MyoKardia, and Novartis.

[email protected]
 

The Food and Drug Administration has issued a warning that certain GE Healthcare Clinical Information Central Stations and Telemetry Servers have cybersecurity vulnerabilities that may introduce risk to monitored patients.

Wikimedia Commons/FitzColinGerald/ Creative Commons License

A security firm identified several vulnerabilities in the GE devices that allow attackers to remotely take control of the medical device, silence alarms, generate false alarms, and interfere with alarms of patient monitors connected to these devices, according to an “Urgent Medical Device Correction” letter issued by GE Healthcare in November 2019.

The affected devices are the ApexPro Telemetry Server and CARESCAPE Telemetry Server, the CARESCAPE Central Station (CSCS) version 1, and the CIC Pro Clinical Information Center Central Station version 1. These devices are used in health care facilities for displaying information, such as the patient’s physiological parameters, and for monitoring patient status from a central location in a facility.

No adverse events related to the vulnerabilities have been reported to the FDA. Health care facility staff should update their devices when GE Healthcare issues a software patch that addresses the vulnerability, separate the network connecting patient monitors using affected devices from the rest of the hospital, and use firewalls and other means to minimize the risk of remote or local network attacks.

“The FDA takes reports of cybersecurity vulnerabilities in medical devices seriously and will continue to work with GE Healthcare as the firm develops software patches to correct these vulnerabilities as soon as possible. The FDA will continue to assess new information concerning the vulnerabilities and will keep the public informed if significant new information becomes available,” the FDA said in the Safety Communication.

[email protected]

The Food and Drug Administration has issued a warning that certain GE Healthcare Clinical Information Central Stations and Telemetry Servers have cybersecurity vulnerabilities that may introduce risk to monitored patients.

Wikimedia Commons/FitzColinGerald/ Creative Commons License

A security firm identified several vulnerabilities in the GE devices that allow attackers to remotely take control of the medical device, silence alarms, generate false alarms, and interfere with alarms of patient monitors connected to these devices, according to an “Urgent Medical Device Correction” letter issued by GE Healthcare in November 2019.

The affected devices are the ApexPro Telemetry Server and CARESCAPE Telemetry Server, the CARESCAPE Central Station (CSCS) version 1, and the CIC Pro Clinical Information Center Central Station version 1. These devices are used in health care facilities for displaying information, such as the patient’s physiological parameters, and for monitoring patient status from a central location in a facility.

No adverse events related to the vulnerabilities have been reported to the FDA. Health care facility staff should update their devices when GE Healthcare issues a software patch that addresses the vulnerability, separate the network connecting patient monitors using affected devices from the rest of the hospital, and use firewalls and other means to minimize the risk of remote or local network attacks.

“The FDA takes reports of cybersecurity vulnerabilities in medical devices seriously and will continue to work with GE Healthcare as the firm develops software patches to correct these vulnerabilities as soon as possible. The FDA will continue to assess new information concerning the vulnerabilities and will keep the public informed if significant new information becomes available,” the FDA said in the Safety Communication.

[email protected]

The Food and Drug Administration has issued a warning that certain GE Healthcare Clinical Information Central Stations and Telemetry Servers have cybersecurity vulnerabilities that may introduce risk to monitored patients.

Wikimedia Commons/FitzColinGerald/ Creative Commons License

A security firm identified several vulnerabilities in the GE devices that allow attackers to remotely take control of the medical device, silence alarms, generate false alarms, and interfere with alarms of patient monitors connected to these devices, according to an “Urgent Medical Device Correction” letter issued by GE Healthcare in November 2019.

The affected devices are the ApexPro Telemetry Server and CARESCAPE Telemetry Server, the CARESCAPE Central Station (CSCS) version 1, and the CIC Pro Clinical Information Center Central Station version 1. These devices are used in health care facilities for displaying information, such as the patient’s physiological parameters, and for monitoring patient status from a central location in a facility.

No adverse events related to the vulnerabilities have been reported to the FDA. Health care facility staff should update their devices when GE Healthcare issues a software patch that addresses the vulnerability, separate the network connecting patient monitors using affected devices from the rest of the hospital, and use firewalls and other means to minimize the risk of remote or local network attacks.

“The FDA takes reports of cybersecurity vulnerabilities in medical devices seriously and will continue to work with GE Healthcare as the firm develops software patches to correct these vulnerabilities as soon as possible. The FDA will continue to assess new information concerning the vulnerabilities and will keep the public informed if significant new information becomes available,” the FDA said in the Safety Communication.

[email protected]