Coronary Artery Bypass Graft Surgery (CABG) is a surgical method performed to improve the flow of blood & oxygen to the heart muscle. The narrowing of the coronary arteries hinders the blood flow through the blood vessels of the heart and can cause a heart attack. The major reason behind the blockage of arteries is the accumulation of fatty substances and cholesterol over a period of time. The surgery helps in re-routing blood to the heart muscles, relieving chest pain and improves function of the heart muscles.