Your Questions About Stents -- Answered

Earlier this week, a landmark study found that stents -- hollow tubes surgically implanted into blocked arteries to prop them open -- may be no more effective at preventing heart attacks and other cardiac events than drug therapy alone. The findings have profound implications for the 800,000 Americans who receive stents each year. On "World News," we asked for your questions about stents. Below, ABC News medical editor Dr. Tim Johnson responds to some of the questions you sent. Question: I...Full Story
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