Surgeons often perform this procedure to treat severe coronary heart disease, which is described as the hardening of the heart arteries due to the build-up of fatty deposits, called plaques, in the walls of the arteries. These plaques can build up, and eventually block the arteries and restrict blood flow to the heart muscle. CABG is used to treat severe blockages that are greatly reducing the ability of the heart to effectively pump blood throughout the body. This treatment restores normal blood flow to the heart muscle, and it also reduces the symptoms caused by the coronary heart disease including angina (chest pain).
This procedure can also lower the risk of a heart attack, especially if you have diabetes. It also improves your chance of survival and allows you to return to a normal lifestyle.