And, although the organization's purpose is to support the interests of the United States, the Green Berets exist in the haze that floats between the country and other nations, groups and peoples -- they're the nimble fingertips of the United States military and the quiet professionals of the U.S. government.
ST Segment Elevation Myocardial Infarction (STEMI) is the name cardiologists currently use to describe a classic heart attack. âMyocardial infarction,â or heart attack, refers to the death of a portion of the heart muscle (myocardium) caused by blood flow interruption. âST segment elevationâ refers to a particular pattern seen on the electrocardiogram (ECG), often seen when a substantial part of the heart muscle is dying.
Definition of Heart attack. 1  Take the Heart Disease Quiz!  Heart attack: The death of heart muscle due to the loss of blood supply. The loss of blood supply is usually caused by a complete blockage of a coronary artery, one of the arteries that supplies blood to the heart muscle. Death of the heart muscle, in turn, causes chest pain and electrical instability of the heart muscle tissue.