Best Cardiac Surgeon in Pune Cardiac surgery is a surgery on the heart or great vessels performed bycardiac surgeons.Frequently, it is done to treat complications of ischemic heart disease, correct congenital heart disease, or treat valvular heart disease from various causes including endocarditis, rheumatic heart disease and atherosclerosis. It also includes heart transplantation. Doctors also use heart surgery to : Repair or replace heart valves, which control blood flow through the heart Repair abnormal or damaged structures in the heart Implant medical devices that help control the heartbeat or support heart function and blood flow Replace a damaged heart with a healthy heart from a donor Treat heart failure and coronary heart disease