Senator Bernie Sanders had two stents inserted to treat an artery blockage after experiencing chest pain, the New York Times reports.

Jeff Weaver, an adviser to Senator Sanders, said in a statement Wednesday morning, “During a campaign event yesterday evening, Senator Sanders experienced some chest discomfort. Following medical evaluation and testing he was found to have a blockage in one artery and two stents were successfully inserted," according to the New York Times.

A stent is a small mesh tube made of wire, per the American Heart Association (AHA). They're used to open arteries and are kept there permanently to keep arteries open.

RELATED: What Is Heart Disease?

Stents are used to treat blocked coronary arteries, which feed into the heart muscle. Those arteries can become blocked by buildups of plaque, or fatty deposits, and these buildups can reduce blood flow to the heart. Chest pain can be a result of a blocked coronary artery.

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