剑桥词典a physical problem present from birth in which a part of the aorta (= the body's largest artery ) is too narrow 主動脈縮窄 With aortic coarctation, pulses in the arms are stronger than those in the legs . 主動脈縮窄情況發生時，手臂脈搏比腿部的有力。 返回 aortic coarctation