At the time of discharge, Dr. Liu always instructs his patients that “three parts of treatment are considered to be over, seven parts of maintenance are just beginning. In addition to taking medication on time, it is important to have regular follow-ups because this is really, really, really important. Whether it is valve repair or valve replacement, discharge from the hospital should be oral warfarin and cardiac diuretic potassium drugs, warfarin is an anticoagulant that can prevent the formation of blood clots, thus ensuring the normal function of the prosthetic valve, this drug may lead to bleeding, eat less does not reach the standard to prevent the role of thrombosis, and eat more eat less, only to draw blood to check the prothrombin time and the international standardized ratio to know, the latter The latter is more accurate, the international standardized ratio should be about 2.0 (please follow the doctor’s advice in special cases), too high or too low is not appropriate. It is true that we have encountered many patients who did not take blood tests for a long time because they forgot or were afraid of the trouble, resulting in thrombosis (not enough warfarin) or organ bleeding (too much warfarin), both of which are very dangerous. Most cardiac patients have to take diuretic potassium supplements for a certain period of time after surgery. When taking diuretic potassium supplements (e.g., hydrochlorothiazide, spironolactone, furosemide, potassium chloride extended-release tablets, etc.), the amount of urine will be on the high side, and there will be a certain degree of loss of sodium and potassium in the body, which play a very important role in the body. Sodium is generally 135-155 mmol/L, and hyponatremia is generally Common, sodium is too low will appear weakness, anorexia, vomiting, etc. Potassium is also very important, generally required to maintain between 4-5 safer, potassium too low or too high may lead to serious arrhythmias, and even the risk of sudden death. Therefore, it is important to check electrolytes regularly, once a week in the early stage of discharge, and if it is stable, the interval between blood draws can be extended appropriately. Patients with coronary artery disease will take lipid-regulating drugs (such as atorvastatin calcium tablets) after discharge from the hospital to lower blood lipids and stabilize atheromatous plaques, etc. For some patients, the impact on liver function is large and may lead to an increase in transaminases, which may require discontinuation or adjustment of the drug. In simple congenital heart disease (atrial defect, ventricular defect, patent ductus arteriosus, etc.), it is important to come to the hospital for a review once in 2-3 months after surgery. It is true that some patients, especially in ventricular defects, have the possibility of residual leakage (more than 1% has been reported), of which, some patients need another surgical repair. Of course, for the vast majority of simple congenital heart disease, if there are no problems on review, they are normal in the future and do not need to come back for a review. For complex congenital heart disease, such as tetralogy of Fallot, it is better to come for review 1-2 times a year after surgery, as the function of the heart, the closure of the valves, etc., may change as time progresses, so that they can be detected and treated in time. Aortic coarctation: Since the surgery only saves lives first by replacing part of the ruptured vessel, most of the distal vessels still have false lumen. Although for most patients, the pseudolumen can be stabilized or even reduced in size in the long term after surgery. However, in some patients, the distal vessels will have problems again, and there is a possibility of another, or even three or four, surgeries. Therefore, for patients with aortic coarctation, in addition to taking strict medication to control blood pressure and heart rate, they should also come to the hospital for regular review after discharge in order to detect the lesion in time.