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Drug-eluting stents: Do they increase heart attack risk?

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A stent is a small mesh tube inserted into an artery to keep it open. A drug-eluting stent is coated with a slow-release medication to help prevent blood clots from forming in a stent.

Blood clotting in a stent can cause a future blockage (restenosis) and may lead to a heart attack.

Stents without a drug coating are called bare-metal stents.