reasons for heart attack?
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Coronary artery disease (CAD) is the main cause of heart attack. A less common cause is a severe spasm, or sudden contraction, of a coronary artery that can stop blood flow to the heart muscle.
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- When one or more of your coronary arteries get clogged, you will have a heart attack.
- Plaques occur as a result of a buildup of fatty deposits, especially cholesterol, that restrict the arteries over time (atherosclerosis).
- Most heart attacks are caused by a condition known as coronary artery disease.
- When a plaque ruptures during a heart attack, cholesterol and other chemicals are released into the circulation.
- At the point of rupture, a blood clot develops. If the clot is large enough, it can cut off blood supply to the heart, depriving it of oxygen and nourishment (ischemia).
- It's possible that your coronary artery is completely or partially blocked.
- You've experienced a ST elevation myocardial infarction if you have a total blockage (STEMI).
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