Heart attack also known as myocardial infarction is a critical health condition that results from the blockage of the heart’s coronary arteries. The blockage of blood vessels can occur in any part of the body. It, however, becomes critical if it affects a major body organ. The blockage can be due to blood clots and other deposits that such as cholesterol/plague.
Such a blockage limits the flow of blood to the heart muscles resulting in death of tissues. There are three types of heart attack: non-ST segment elevation myocardial infarction (NSTEMI), ST segment elevation myocardial infarction (STEMI) and coronary spasm, or unstable angina. STEMI and NSTEMI are major heart attacks.