Tag Archives: heart attack causes

What Is a Heart Attack?

What Is a Heart Attack?

A heart attack happens when something blocks the blood flow to your heart so it can’t get the oxygen it needs. More than a million Americans have heart attacks each year. Heart attacks are also called myocardial infarctions (MI). “Myo” means muscle, “cardial” refers to the heart, and “infarction” means death of tissue because …

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