About every 40 seconds, someone in the United States has a myocardial infarction (heart attack).
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♦ A myocardial infarction (MI) (mi-0-KAR-dee-al) (in-FARK-shun) is commonly known as a “heart attack.”
♦ An MI occurs when the blood flow that brings oxygen to the heart muscle is blocked.
♦ The blockage is most often caused by a buildup of fat, cholesterol, and other substances, which form a plaque within the arterial walls.
♦ Heart attacks can strike suddenly, some are fatal, but many experience signs and symptoms in advance.
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