Restorative cardiac valve replacement surgery is a surgical technique that replaces a valve of the heart on the other, which can be artificial. It is used to treat congenital or valvular heart diseases are infectious in which the valve can present problems not open well (stenosis ) or not close properly (valvular insufficiency). The heart consists of two ventricles two atria and four valves whose mission is to control the direction of blood flow, in addition to allow oxygenated blood from the lungs to the heart gets going from the atria to the ventricles, and there the bloodstream. Valvular surgery is performed under general anesthesia and requires the use of a machine for extracorporeal circulation. During the first attempt to repair the valve but occasionally cases must be replaced with one that can be biological or artificial. The former tends to give less rejection problems but their average duration is less than the artificial.