Heart bypass surgery, also recognized as coronary artery bypass surgery, purposes to substitute injured arteries in the heart. A surgeon usages blood vessels from one more area of the body to patch-up the spoiled arteries. This surgery is used while the coronary arteries convert congested or hurt. The coronary arteries send the heart’s muscles using oxygenated blood. If they are jammed or the flow of blood is controlled , the heart can’t function correctly.