(HealthDay News) -- Implanted cardioverter defibrillators (ICDs), which deliver an electric shock to prevent sudden death when a heart stops beating properly, improve survival in people 75 and older, new research suggests.
The finding contradicts several earlier studies, notably a 2007 report from Canada that said the benefits of ICDs were limited for older people.
"Their discussion looked at defibrillators in patients who were older and sicker," said Dr. Paul Chan, an assistant professor of medicine at the University of Missouri in Kansas City, and lead author of the new report. "It found use of defibrillators was limited, because they were more likely to die. But there was no control group, no comparison with a group of similar patients who did not get defibrillators."
The new study did have such a control group. It looked at results for 500 people who got ICDs because their left ventricles, which pump blood to the body, were functioning at no more than 35 percent of capacity. The study compared those results to those for a similar number of people with the same condition who did not get ICDs. Read more...
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