Heart attack, also known medically as myocardial infarction, is a condition that occurs when blood flow to the heart is blocked by plaque, fat, and cholesterol buildup in the coronary arteries.
Myocardial infarction is very serious, and if you or someone else is having a heart attack, call 9-1-1 immediately. Quick treatment is vital for preventing death.
Coronary artery disease is a condition in which one or more arteries in the heart are blocked and is the main cause of heart attacks. Arteries become clogged when cholesterol deposits build up along their walls.
Heart attack symptoms can happen on and off or continuously over the course of a few minutes or a few hours. Chances are, if you have been experiencing chest pain for several days or weeks, it is not related to a heart attack.
If you see somebody having a heart attack, call 911 immediately. If they are conscious, have them chew and swallow an aspirin, which helps prevent blood clots. If they lose consciousness, administer CPR or follow the instructions on an automated external defibrillator (AED) if one is immediately available.
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