Cardiac surgery, or cardiovascular surgery, is the surgery of heart or great vessels. It is often carried out to treat complications of ischemic heart disease; to correct congenital heart disease; or to treat valvular heart disease due to various causes, which include endocarditis, rheumatic heart disease, and atherosclerosis. Other surgeries include Minimally Invasive Heart Surgery, Ventricular Assist Devices (VADs), heart transplantation and much more.