Heart bypass surgery is an action to overcome the blockage or narrowing of coronary arteries. This procedure is performed for patients with coronary heart disease, by utilizing blood vessels from other body organs as a shortcut to drain blood to the heart muscle. The heart is a vital organ that pumps blood throughout the body, including the heart muscle itself. The blood supply to the heart muscle is supplied by coronary arteries which are divided into 2 branches, right and left. However, coronary arteries can become blocked or narrowed due to the process of atherosclerosis. Blocked heart arteries can cause heart attacks and heart failure. Heart bypass surgery aims to restore the supply of oxygen-rich blood to the heart muscle that was previously blocked. Indications for Heart Bypass Surgery Heart bypass surgery can be recommended if the patient has coronary heart disease with the following conditions: More than 1 blood vessel is narrowed, so the left ventricle does not function...