Acute myocardial infarction is a common disease among middle-aged and elderly people, mostly occurring on the basis of atherosclerotic lesions of coronary arteries, and is myocardial necrosis caused by persistent interruption of myocardial blood flow supply. The most common triggering factors for acute myocardial infarction are excessive fatigue, emotional excitement, after a full meal, poor sleep or continuous stressful work, etc. The patient in this case was triggered by a drastic change in mood during an argument with someone. Patients must pay enough attention to the following symptoms and seek medical attention immediately: persistent pain in the precordial region for more than half an hour or even for several hours; ineffective use of nitroglycerin; pain often radiating to the back, left shoulder, upper limb or throat; often accompanied by chest tightness, breath-holding, profuse sweating or a sense of near death; reduced blood pressure or a rapid or slow heart rate. In addition, a small number of patients with acute myocardial infarction are asymptomatic or have atypical symptoms, especially in the elderly. Such patients usually do not have chest pain, but have pain in the upper abdomen, throat or even teeth, or unexplained syncope or coma, etc. Whether or not it is a heart problem, as long as the symptoms are severe and the pain persists without relief, they should seek medical attention promptly to clarify the cause. For the usual self-care of such patients, the following points are worth noting: a. Pay attention to climate change, prevent cold and keep warm Under the influence of severe cold or strong cold air, the coronary arteries are prone to spasm and secondary thrombosis and cause acute myocardial infarction. When the climate changes rapidly and the air pressure is low, patients with coronary heart disease will feel obvious discomfort. Domestic data show that low temperature, high wind and cloudy rain are one of the triggers of acute myocardial infarction. Therefore, whenever the climate is bad, patients with coronary heart disease should pay attention to keep warm, or appropriate additional drugs for protection. Second, pay attention to labor protection, avoid causative factors People suffering from coronary heart disease should never be forced to lift too heavy items. The physiological effect of lifting heavy objects is similar to holding one’s breath to defecate, which is a common cause of myocardial infarction in elderly patients with coronary heart disease. At the same time, smoking, hyperlipidemia is a common disease in modern society, is the cause of coronary atherosclerosis, one of the “culprits”, coronary heart disease patients in life to do to quit smoking, light low-fat diet. Third, pay attention to the details of life, reduce the stimulus Relax, keep a calm state of mind, to be able to handle anything; appropriate to participate in sports activities, but should avoid competitive competition, even if the game should be to exercise to increase the fun for the purpose, not to win or lose on high or low. At the beginning of the campaign, move your body, such as lifting your arms, stretching your legs, etc. Do some relaxation activities at the end of the exercise, should not immediately stop the activity, and should not exercise immediately after bed rest, otherwise it is not good for the heart; do not take a bath when full or hungry. The water temperature is best and body temperature, the water temperature is too high can make the skin vascular expansion, a lot of blood flow to the body surface, resulting in cardiac ischemia. Bathing time should not be too long to avoid hypoxia, fatigue, elderly patients with coronary heart disease should pay more attention. Fourth, pay attention to the identification of aura, timely treatment of acute myocardial infarction patients about 70% have aura symptoms, mainly manifested as a sudden and significantly aggravated angina attack; angina is more severe in nature than before, not easily relieved by the use of nitroglycerin; pain accompanied by nausea, vomiting, sweating or obvious bradycardia; elderly patients with coronary heart disease suddenly unexplained arrhythmia, heart failure, shock, inspiration difficulties or syncope. Most of the aura symptoms appear 1 week before the onset, a few even weeks earlier, about 40% of patients occur 1 to 2 days before infarction, and some patients can have repeated attacks. Once the above symptoms appear, we must pay great attention to them and treat them seriously. First of all, the patient should rest strictly in bed, keep quiet, avoid excessive mental tension, take nitroglycerin or cardiac pain under the tongue, and ask the doctor to come to the house immediately if possible, and consult in situ, while being prepared to be sent to the hospital. The patient is strictly forbidden to walk around, and is transported on a stretcher when the condition is relatively stable. Emergency drugs such as nitroglycerin can be used continuously or intermittently during transportation. Patients with timely treatment of infarct aura can be spared from acute myocardial infarction, and even if myocardial infarction occurs, the scope of infarction is smaller, symptoms are milder, complications are fewer, recovery is easy, and survival rate is significantly increased.