Congenital Heart Defects - Transposition of the Great Arteries (TGA)


1. Aorta arising from the right ventricle. Poorly oxygenated blood is delivered to the body.
2. Pulmonary artery arising form the left ventricle. Well oxygenated blood delivered back to the lungs. 		1. Aorta arising from the right ventricle. Poorly oxygenated blood is delivered to the body.
2. Pulmonary artery arising form the left ventricle. Well oxygenated blood delivered back to the lungs.
3. Coronary arteries mobilized from base of aorta in preparation for reimplantation onto pulmonary artery ("neo-aorta").

In transposition of the great arteries, the aorta and pulmonary artery are reversed. The aorta receives the oxygen-poor blood from the right ventricle, but it's carried back to the body without receiving more oxygen. Likewise, the pulmonary artery receives the oxygen-rich blood from the left ventricle but carries it back to the lungs.

4. The PDA has been divided and the pulmonary arteries are moved in front of the aorta for reconstruction.
5. Pericardial patch used for pulmonary artery reconstruction at the site where the coronary arteries used to be.
6. Close-up view of pulmonary artery reconstruction.
7. Close-up view of aortic reconstruction showing coronary arteries reimplanted.