occurs when myocardial cells die as result of prolonged oxygen deprivation. The most common cause of an MI is a blood clot (thrombosis) forming inside a coronary artery ,or one of its branches.This prevents blood flow to a part of the heart.
MI occurs when blood stops flowing properly to a part of the heart, and the heart muscle is injured because it is not receiving enough oxygen. Usually this is because one of the coronary arteries that supplies blood to the heart develops a blockage due to an unstable buildup of white blood cells, cholesterol and fat.
Myocardial infarction focuses on the myocardium (the heart muscle) and the changes that occur in it due to the sudden deprivation of circulation blood. The main changes is necrosis (death) of myocardial tissue.
a coronary artery or one of its smaller branches in damage to the myocardium. The part of the myocardium supplied by this artery will lose its blood and oxygen supply as a result of the blockage. This part of the muscle is at risk of dying unless the blockage is removed quickly and oxygen supply restored. When this happens, that part of heart muscle is said to be ‘infarcted’