myocardial infarction

obstruction of the heart muscle

"Heart attack" redirects here. For other uses, see Heart attack (disambiguation).Acute myocardial infarction (AMI or MI), more commonly known as a heart attack, is a medical condition that occurs when the blood supply to a part of the heart is interrupted, most commonly due to rupture of a vulnerable plaque. The resulting ischemia or oxygen shortage causes damage and potential death of heart tissue. It is a medical emergency, and the leading cause of death for both men and women all over the world. Important risk factors are a previous history of vascular disease such as atherosclerotic coronary heart disease and/or angina, a previous heart attack or stroke, any previous episodes of abnormal heart rhythms or syncope, older age—especially men over 40 and women over 50,  smoking, excessive alcohol consumption, the abuse of certain illicit drugs, high triglyceride levels, high LDL ("Low-density lipoprotein") and low HDL ("High density lipoprotein"), diabetes, high blood pressure,  obesity, and chronically high levels of stress in certain persons.
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Myocardial infarction n. Abbr. MI Necrosis of a region of the myocardium caused by an interruption in the supply of blood to the heart, usually as a [more]Myocardial infarction - Community and Resources

Noun
1. destruction of heart tissue resulting from obstruction of the blood supply to the heart muscle
(synonym) myocardial infarct, MI
(hypernym) infarct, infarction
(part-holonym) heart attack

an interruption in the blood supply to the heart because of narrowed or blocked blood vessels. Also called a heart attack.