I. Concept Ischemic cardiomyopathy (ICM) is a clinical syndrome in which long-term myocardial ischemia leads to limited or diffuse fibrosis of the myocardium, which produces impaired cardiac systolic and/or diastolic function, resulting in a series of clinical manifestations such as cardiac enlargement or stiffness, congestive heart failure, and cardiac arrhythmias. Risk factors Hypertension, hyperglycemia, fat metabolism disorders (obesity), as well as elevated fibrinogen, increased levels of homocysteine in the blood, micronutrient deficiencies, coagulation factor abnormalities, overeating, lack of physical activity, smoking, and the still debated A-type personality, the family history of heart disease are all risk factors for ischemic cardiomyopathy. Third, the causative factors of ischemic cardiomyopathy is the basic cause of coronary artery stenosis or occlusive lesions caused by coronary artery dynamics and (or) resistance factors. The heart is different from other organs in the human body, it is in the basal state of oxygen uptake rate has accounted for about 75% of the coronary artery blood flow delivery, when the myocardial oxygen consumption increases can only be increased through the coronary artery blood flow to meet the demand for oxygen consumption when a variety of reasons lead to the coronary artery lumen to appear a long-term severe stenosis caused by a significant reduction in local blood flow will cause myocardial ischemia. The causes of myocardial ischemia are as follows: coronary atherosclerosis, thrombosis, vasculitis, myocardial microcirculation disorders. Fourth, the performance of angina pectoris, heart failure (exertional dyspnea, severe cases can develop into sitting breathing and nocturnal paroxysmal dyspnea and other manifestations of left heart failure. Fatigue and weakness are more common. In the late stage of combined right heart failure, patients may develop loss of appetite, peripheral edema and abdominal distension, pain in the liver area and other manifestations), cardiac arrhythmia (ventricular pre-systole, atrial fibrillation, bundle branch conduction block is common), thrombosis and embolism. V. Treatment Different types of ischemic cardiomyopathy are treated differently, mainly including general treatment, drug treatment, rehabilitation after surgery. Sixth, precautions Eliminate all treatable or preventable risk factors for coronary heart disease, including smoking, hypertension, diabetes, hypercholesterolemia obesity control of body weight, etc., and pay attention to preventing the triggers of heart failure such as respiratory infections, transfusion of fluids too much too fast and other factors. (1) diet: because ischemic cardiomyopathy, need to take diuretics often, so the dietary restrictions do not have to be too strict. Elderly people have reduced body fluids, and the ability of the distal renal unit to absorb sodium is reduced, which can easily cause hyponatremia, leading to dehydration, decreased blood pressure, blood concentration, and thrombosis. Taking diuretics can be without excessive restriction of sodium salt generally 2 ~ 5g / d, severe heart failure should be limited to 0.2g / d or less. Fluid intake of 1500 ~ 2000ml / d. Should eat high protein, low calorie, high fiber and other easily digestible food, small meals. (2) Rest: the rest and activities of ischemic cardiomyopathy patients should be arranged according to the status of cardiac function, and when there is a combination of heart failure, it should be emphasized that there should be enough rest, and the time of rest should be long and early, that is, the patients should be encouraged to do limb activities in bed to promote the circulation of the limbs. Mild heart failure should avoid strenuous activities and insist on appropriate physical activities such as tai chi. Moderate heart failure should limit the amount of daily activities, can be a short walk, short time qigong. Severe heart failure should be bed rest. Both rest and moderate activity should be emphasized in heart failure in the elderly, in order not to increase the occurrence of chest tightness, shortness of breath and other symptoms. Avoid prolonged bed rest to prevent the occurrence of bedsores and cause venous thrombosis, embolism and other diseases. In conclusion, ischemic cardiomyopathy is a disease that cannot be cured, but it can be relieved by regular treatment and improve the quality of life in the later stages, which of course requires the joint efforts of patients, their families and doctors.