Myocardial infarction (MI) or acute Myocardial infarction is an acute coronary syndrome, results from reduced blood flow through one or more coronary arteries, which causes myocardial ischemia and necrosis. Myocardial infarction (MI) results when myocardial tissue becomes necrotic because of absent or diminished blood supply. When myocardial tissue is deprived of oxygenated blood supply for a period of time, an area of myocardial necrosis develops, this necrosis is surrounded by injured and ischemic tissue