Acute myocardial infarction is the most common cardiovascular disease with the highest fatality rate. It is caused by acute blockage of the coronary arteries supplying the myocardium, resulting in myocardial cell ischemia and hypoxia. Even if the patient does not die from acute myocardial infarction, there is a high possibility of complications such as heart failure and arrhythmia in the future. Therefore, we should pay attention to the possible symptoms of acute myocardial infarction in daily life, identify them early, seek medical treatment as soon as possible, improve the cure rate of acute myocardial infarction, and improve the quality of life. 　　The main manifestations of acute myocardial infarction: 　　50% to…