Cardiovascular medicine, usually referred to as cardiovascular medicine and sometimes cardiac surgery. It deals with heart diseases, including ischemic heart disease, structural heart disease, abnormal cardiac function, and arrhythmia. 1. Coronary atherosclerotic heart disease: ischemic heart disease, including angina pectoris, myocardial infarction, ischemic cardiomyopathy, coronary artery stenosis, resulting in chest tightness, chest pain and other symptoms of myocardial ischemia, need to be formalized in the cardiovascular internal medicine clinic, medication or implantation of a stent, and sometimes require cardiac surgery bypass surgery. 2. Structural heart disease: structural abnormalities of the heart, such as congenital heart disease: atrial septal defect, ventricular septal defect, arterial catheterization, tetralogy of Fallot, etc., in the cardiovascular department of interventional blockage, or in the cardiac surgery for repair surgery treatment. There are also cardiomyopathies, such as hypertrophic cardiomyopathy, heart valve disease, etc., which require cardiovascular medicine or surgery. 3. Abnormal heart function: heart failure is the end stage of many heart diseases, need regular cardiovascular drug treatment, regular review, adjust the drug. 4. Arrhythmia: some patients with palpitations, common arrhythmias are premature beats, atrial fibrillation, supraventricular tachycardia, ventricular tachycardia, sick sinus node syndrome, etc., which need formal cardiovascular medicine or surgical treatment. Cardiovascular medicine deals with the structure of the heart, blood circulation, electrical activity of the heart, and all other abnormalities of the heart, and should be consulted promptly for related diseases.