Once an acute myocardial infarction occurs, coronary angiography needs to be performed immediately to understand the degree of coronary lumen stenosis as well as the extent and location of the infarction. Emergency coronary stent intervention is required after coronary angiography, and the cost of coronary stent intervention is about 30,000-40,000 yuan, which varies according to the charges of tertiary hospitals in each region, mainly the cost of coronary stent, while the cost of coronary angiography alone is about 6,000-7,000 yuan. After coronary stent implantation, you need to take long-term coronary expansion anticoagulant drugs, such as isosorbide mononitrate extended-release tablets, aspirin enteric tablets, clopidogrel tablets, etc., review regularly and adjust the dosage of drugs taken according to the review results in time in order to achieve the purpose of maintaining health.