Heart Attack (Myocardial Infarction)
— Death of or damage to part of the heart muscle due toan insufficient blood supply. Heart attacks occur when one of the coronary arteries that supplyblood to the heart muscle is blocked. Blockage is usually caused from a buildup of plaque(deposits of fat-like substances) due to atherosclerosis. If a plaque deposit tears or ruptures, ablood clot may form and block the artery, causing a heart attack. Heart attack is also called acoronary thrombosis or coronary occlusion.
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