If the patient has a history of hypertension, diabetes mellitus, hyperlipidemia and other underlying diseases, and the disease develops during activity or emotional excitement, in this case, see cardiovascular medicine and pay attention to coronary heart disease. 2. cardiovascular surgery, if the patient has a previous history of hypertension, usually poorly controlled blood pressure, and there is tearing pain in the back accompanied by blood pressure If the patient has a previous history of hypertension, and his blood pressure is not well controlled, and he has a sudden onset of chest pain with dyspnea, and the cardiac ultrasound indicates an increase in right heart load, this may be a pulmonary embolism, and he should see a cardiovascular surgeon. 3. If the patient had emphysema and pulmonary alveoli before, sudden onset of chest pain with dyspnea, attention should be paid to tension pneumothorax, and respiratory medicine should also be listed.