Danish researchers who conducted a study on more than 600 patients found that those who received a drug-coated stent right after a severe heart attack had a lower risk of experiencing major adverse events but had a higher risk of dying from heart-related problems than those who got a bare-metal stent. Doctors at the American College of Cardiology's annual meeting said they think more studies are needed to determine the long-term effects of drug-eluting stents.

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