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A heart attack, or myocardial infarction, happens when oxygen-rich blood does not reach a part of the heart muscle. When you purchase through links on our site, we may earn an affiliate commission.

This screening test measures how well blood flows through your heart. It may be used to diagnose coronary artery disease or to assess damage caused by a heart attack. Share on Pinterest JazzIRT/Getty ...

When a doctor listens to someone's heartbeat, they typically hear a characteristic sound: "lub-dub, lub-dub." In some people, though, this two-tone heartbeat is accompanied by whooshing or rasping ...