Heart attack

A heart attack, also called a myocardial infarction, occurs when a part of the heart muscle doesn’t get enough blood because a coronary artery has become partially or fully blocked. A heart attack should not be confused with cardiac arrest, when the heart’s electrical system malfunctions and the heart suddenly stops beating.

In the United States, someone has a heart attack every 40 seconds. Every year about 805,000 Americans have heart attacks, 75% of which are first-time attacks. In early middle age, men have a greater risk of heart attack than women. However, a woman’s risk increases after menopause.

Heart Attack

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