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Weight loss linked to higher risk with implanted defibrillators
Date:3/7/2013

lure or death compared to those without significant weight loss. In fact, each kilogram (2.2 pounds) of weight lost correlated to a 4 percent higher risk of heart failure or death.

This study fits with other studies that have looked at the "obesity paradox," wherein overweight patients with chronic diseases such as heart disease, kidney disease or diabetes, have better health outcomes than those of normal weight. One reason for this paradox among CRT-D patients might be that heart failure causes the body to be in a catabolic state, meaning it has a high demand for energy. Heart failure patients without significant weight loss may have reserves that better allow their bodies to tolerate this high energy demand, Dr. Kutyifa said.

Study authors caution that their findings are not a prescription for patients to pack on the pounds.

"We would still recommend weight control under a physician's supervision since we know that obesity is associated with other serious diseases including diabetes, high blood pressure, coronary artery disease and sleep apnea," Dr. Kutyifa said. "Heart failure patients should continue to follow their clinicians' advice in regards to diet and lifestyle changes."

According to Dr. Kutyifa, more research is needed to examine the effects of weight loss among heart failure patients with pacemakers in prospective clinical trials. The MADIT-CRT trial was supported by a research grant from Boston Scientific, St. Paul, Minn.


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Contact: Beth Casteel
bcasteel@acc.org
240-328-4549
American College of Cardiology
Source:Eurekalert

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