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Heart bypass surgery, also called coronary artery bypass graft (CABG) surgery, is a treatment for coronary artery disease or atherosclerosis. Heart bypass surgery involves the creation of a new route for blood to flow around narrowed or blocked coronary arteries. Your coronary arteries are the blood vessels that supply your heart muscle with blood. The newly created route is made with a graft. A graft is a healthy blood vessel taken from other places in your body. Atherosclerosis is a common cause of narrowed or blocked coronary arteries.
A coronary artery bypass surgery or CABG is done when the flow of blood through the arteries is impaired. This often happens when the coronary arteries that bring blood to the heart become thickened with plaque. Plaque may build up due to the accumulation of fat, cholesterol etc in the arteries. This prevents the smooth flow of blood through the heart. A bypass surgery literally âbypassesâ the blocked area of the artery to maintain a smooth flow of blood to the heart. A bypass surgery is just a type of open heart surgery. There may be others like coronary angioplasty, heart transplants etc. Again, bypass surgery may not be performed in an open heart manner. Medical science has scaled great heights and less invasive techniques of performing a bypass are available now.