Valve replacement surgery is the use of an artificial valve to replace one’s own diseased valve, partially restoring the heart’s function and preventing continued damage to the heart. The extent to which a patient’s heart function can be restored after surgery depends to a large extent on the extent to which the heart function was damaged prior to the surgery, in addition to the surgical procedure. It is like a car that has traveled a long distance, his engine and its parts are badly worn, and although it has been overhauled and can continue to drive, its performance is not as good as it used to be, and it certainly cannot be driven as a new car, so it is not possible for all patients to recover to full normal. Patients usually need oral medication for 3-6 months or even longer after valve surgery, and some patients may need to take medication for life to maintain heart function. Some patients with severe disease may experience heart failure again after surgery, even if the heart surgery is successful.