Term: coronary bypass: open-heart surgery in which the rib cage is opened and a section of a blood vessel is grafted from the aorta to the coronary artery to bypass the blocked section of the coronary artery and improve the blood supply to the heart
Broader: open-heart surgery: heart surgery in which the rib cage is spread open, the heart is stopped and blood is detoured through a heart-lung machine while a heart valve or coronary artery is surgically repaired | Unrelated: guarantee: a collateral agreement to answer for the debt of another in case that person defaults