What is complete transposition of the great arteries?
Complete transposition of the great arteries (TOGA) occurs when the aorta, which normally comes off the left ventricle and pumps red blood to the body, arises from the right ventricle(1) and pumps blue blood returning from the body back to the body bypassing the lungs completely. The pulmonary artery, which normally arises from the right ventricle and pumps blue blood to the lungs, arises from the left ventricle (2) and sends red blood returning from the lungs right back to the lungs. Essentially, the great arteries are reversed from their normal connections.
