Medicine: Beta Power

Hope after heart attacks

Of the 350,000 Americans each year who survive a heart attack, about 10% will die within a year, often from a second attack. But last week heart patients had cause for encouragement. The National Heart, Lung and Blood Institute announced that it was calling an early halt to a large-scale study because the drug being tested was so successful in reducing deaths in heart attack victims. Says NHLBl's associate director, Dr. William Friedewald: "The regular use of propranolol has the potential for saving at least 6,500 lives in the United States alone each year."

The curtailed study began in...

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