Sudden death is often unexpected and sudden, there can be no signs, or there are some subtle signs but was ignored. 90% of sudden cardiac death are caused by acute myocardial infarction, patients with cardiovascular disease must pay attention to daily preventive work, sudden death to take first aid measures to minimize the occurrence of accidents. Here we look at what to pay attention to the prevention of sudden cardiac death. 1, develop good living habits Smoking cessation; balanced diet, dietary disorders, overeating, the burden on the human digestive system increases, the blood will be concentrated to the gastrointestinal tract, can cause the relative blood supply of the heart and brain is insufficient, which is also “full of sleepy” reasons; reduce cholesterol, prevent obesity; appropriate aerobic exercise, enhance cardiorespiratory function; Comprehensively improve the body’s immunity, delaying organ aging. 2, avoid excessive mental tension tension, anxiety, anger can be induced by sympathetic nervous excitement, elevated blood pressure, heart rate, increase myocardial oxygen consumption, but also easily induced myocardial ischemia or arrhythmia. Be happy and optimistic, strive to achieve psychological balance, and participate in appropriate sports and cultural activities. 3, targeted prevention can cause sudden death risk factors For example, early in the morning just get up, is the body’s sympathetic nervous system is the most active moment, most likely to induce myocardial ischemia or arrhythmia. Therefore, activities should not be too intense, when getting up, from lying down to sitting up, and then to stand up, should be “half a beat slower”. When you go to the toilet to relieve the bowel movement, the myocardial oxygen consumption increases, which is easy to induce myocardial ischemia and sudden death. Therefore, people with risk factors for cardiovascular disease and coronary heart disease should keep their bowels clear, avoid straining to relieve bowel movements, and use nitroglycerin preventively when necessary. 4.Control and treatment of pre-existing diseases Actively treat pre-existing diseases such as coronary heart disease, hypertension, coronary heart disease and other diseases related to sudden death. 5, develop the habit of timely medical treatment Especially in winter, when the chest tightness, chest pain episodes increase in frequency, degree of aggravation or prolongation of the duration of the chest pain, we should pay enough attention to immediately go to the doctor, it is best to do the coronary artery angiography, according to the results of the angiography and then formulate a treatment plan, which can largely avoid the occurrence of serious consequences. 6, regular medical checkups Whether heart disease patients or consciously healthy people, should be regular medical checkups. In order to find some patients with the potential risk of sudden cardiac death. If the occurrence of chest pain suspected heart disease, do not blindly walk to prevent further development of the condition, or even lead to sudden death. The most effective way is to lie down immediately, and if there are emergency medicines such as nitroglycerin and fast-acting heart pills around, take them immediately. If there is dizziness, loss of consciousness before the feeling, or the heart rate is very slow, it may be the precursor of sudden death, you can take their own cough or by family members to give strong stimulation, such as by pressing the Renzhong acupoints, loud call, etc. to stimulate the patient’s sympathetic nerves, to maintain an effective circulation. At the same time, call the emergency number and wait for help.