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 heart attack

17/3/2011

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heart attack

A heart attack happens when one of the coronary arteries becomes blocked by a blood clot. This cuts off the supply of blood and oxygen to the heart, The American Heart Association explains heart attacks . Symptoms, diagnosis, warning signs, tolls and resources and much more.A heart attack occurs when the supply of blood and oxygen to an area of heart muscle is blocked, usually by a clot in a coronary artery. Heart attacks are the leading cause of death for both men and women worldwide. Important risk factors are previous cardiovascular disease, older age, Learn more about heart attack causes, symptoms, diagnosis, and treatment.
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