1, avoid triggers Excessive fatigue, emotional excitement, after a full meal, poor sleep or continuous stressful work are factors that trigger acute myocardial infarction, so pay attention to avoid these factors. At the same time, people with coronary artery disease should never be forced to lift heavy objects. The physiological effect is similar to holding one’s breath to defecate, which is a common cause of myocardial infarction in elderly patients with coronary heart disease. In addition, 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. 2, reduce stimulation relaxed spirit, keep a calm state of mind, 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 the high or low. At the beginning of the campaign, move your body, such as raising 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 go to bed immediately after exercise. Do not take a bath when you are 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. 3, timely treatment About 70% of patients with acute myocardial infarction have aura symptoms, mainly manifested as a sudden and significantly aggravated angina attack, the nature of angina is more severe than before, the use of nitroglycerin is not easy to relieve; pain accompanied by nausea, vomiting, sweating or obvious bradycardia. Sudden unexplained arrhythmia, heart failure, shock, dyspnea or syncope in elderly patients with coronary artery disease. Most of the aura symptoms appear 1 week before the onset, a few even weeks earlier, about 40% of patients occur 1-2 days before infarction, and some patients can have repeated attacks. Once the above symptoms appear, they must be taken seriously and treated with great importance. The patient should be allowed to rest absolutely in bed, loosen the collar, and keep the room quiet and air circulation. Oxygen can be administered immediately when available. Take 1 tablet of nitroglycerin or 1-2 tablets of cardiac pain under the tongue, and call the emergency center immediately at the same time. Never take a bus or help the patient walk to the hospital to prevent the scope of acute myocardial infarction from expanding. Emergency drugs such as nitroglycerin can be used continuously or intermittently during transportation