First, the majority of asymptomatic myocardial ischemia or mild angina patients, treadmill exercise test or 24 hour dynamic electrocardiogra
First, the majority of asymptomatic myocardial ischemia or mild angina patients, treadmill exercise test or 24 hour dynamic electrocardiogram (Holter) monitoring confirmed that high-risk patients had significant ischemia, in order to maintain their physical labor and participate in physical exercise, work and improve the quality of life, reduce the risk of serious or fatal cardiac events, such as a coronary angiography a serious disease, should be considered in the selection of coronary stenting. This kind of patient has a high success rate, low morbidity and mortality. Two, angina: a lot of moderate to severe angina pectoris or unstable angina pectoris response to drugs is not ideal, usually suitable for coronary stenting. The majority of patients with single or multiple coronary artery disease, the success rate is high, the risk is small, postoperative angina relief significantly. Three, myocardial infarction: acute myocardial infarction is due to severe myocardial blood flow reduction and sudden stop, the most common cause is the main coronary atherosclerosis. Percutaneous coronary intervention (PCI) is a very effective means of reconstruction of coronary artery perfusion in patients with acute myocardial infarction (AMI) of 90%. Coronary stent can further expand the outcome of coronary intervention. This method can obtain the immediate effect of the treatment of acute myocardial infarction, so that more myocardial protection, myocardial ischemia time is less, patients benefit more. Advantages and disadvantages of coronary stents: the advantages of coronary intervention is relatively simple, avoid or reduce general anesthesia, thoracotomy, cardiopulmonary bypass, central nervous system complications and recovery time, etc.. Repeat coronary intervention is easier than repeat coronary artery bypass grafting. And in the case of emergency can quickly achieve revascularization. With the continuous improvement of the interventional materials and the accumulation of the experience of the surgeon, the safety and long-term effect is more and more obvious. Compared with drug therapy, the death or severe ischemic events were significantly decreased. However, coronary stent has its disadvantages and limitations, and it may be a better choice for patients with multiple diffuse lesions and severely impaired heart function. But in any case, the results show that coronary stenting can significantly reduce the symptoms of angina pectoris in patients with single or multiple coronary artery disease, improve exercise tolerance and improve quality of life. Patients with severe symptoms of myocardial ischemia and those who wished to maintain physical activity were more likely to undergo coronary stenting.