Normal Infant Circulatory System vs. Transposition of the Great Arteries with Intact

SKU: C24005

Transposition of the great arteries is a severe congenital heart defect. The “great arteries” are the aorta and the pulmonary artery. In a normal heart, the pulmonary artery is attached to the right ventricle, and the aorta originates from the left ventricle. In infants born with transposition of the great arteries, the pulmonary artery is instead attached to the left ventricle, and the aorta originates from the right ventricle. Deoxygenated blood returning from the body does not enter the lungs and instead is pumped through the aorta back to the body. Oxygenated blood returning from the lungs does not go to the organs of the body and instead is pumped back to the lungs. If the ventricular septum remains intact, the deoxygenated and oxygenated blood will not mix, and the rest of the body will not receive oxygen. Surgical intervention is necessary to repair this defect.

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