In recent years, the incidence of cardiovascular disease mortality and disability all over the world has shown the obviously upward trend. Ischemic heart disease is one of the most common clinical cardiovascular diseases. Ischemic heart disease is myocardial damage for the reason of the imbalance between coronary blood flow and myocardial demand, causing by change of coronary circulation. Acute coronary artery stenosis and occlusion may lead to acute myocardial ischemia or myocardial infarction. Ther...