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Heart Health Center

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Common Heart Drug Questioned

Study: Beta Blockers May Be Overused
WebMD Health News
Reviewed by Louise Chang, MD

Oct. 2, 2012 -- A new study suggests that many patients may not benefit from beta-blockers, one of the most commonly prescribed medications for heart disease.

Beta-blockers slow down the heart. They're life savers for people with heart failure and others with fragile hearts badly damaged by heart attacks. There's no question that beta-blockers benefit such people.

But doctors also give beta-blockers to people whose hearts aren't so fragile, including:

"In all these three subgroups of patients, there is no benefit of using beta-blockers," says Sripal Bangalore, MD, director of the cardiovascular outcomes group at the NYU School of Medicine.

Bangalore says recommendations for beta-blockers are based mostly on data collected two decades ago. Since then, treatment of heart attack and CAD patients has greatly improved.

"Now we immediately open their heart blockages up and give them new medicines like statins," Bangalore says. "If much of the heart muscle is already dead and there are a lot [heart rhythm problems], beta-blockers might be best. But in [the] modern patient, those things might not be there."

Beta-Blocker Study

Bangalore and an international team of researchers compiled medical records for 44,708 people who had suffered a heart attack, CAD without heart attack, or who were at high risk of heart disease.

After four years, they looked at whether patients given beta-blockers were less likely to die of heart disease or to suffer a heart attack or stroke.

Bottom line: They were not. Even when the researchers compared patients with the same risk factors for heart disease, those taking beta-blockers did not have better four-year results.

"We have shown in our study that if you have a heart attack and take beta-blockers for a year, you probably will benefit," Bangalore says. "But the question is, how long after a heart attack would beta-blockers offer a benefit? The European Union says use these drugs long-term only in patients with heart failure. American guidelines say to keep taking them for at least three years after a heart attack."

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