Transposition of the Great Arteries (TGA)

Transposition of the Great Arteries (TGA) occurs when the aorta and the pulmonary artery are transposed. In TGA, oxygen poor blood goes to the body via the aorta. The oxygen-rich blood goes back to the lungs via the pulmonary artery. There needs to be a connection between the right and left sides of the heart so oxygen rich blood can reach the body. In TGA, there needs to be an Atrioventricular Septal Defect (ASD) –an open hole between the top chambers – or foramen ovale (PFO) so that oxygen rich blood can reach the body. In short, the aorta and pulmonary artery are connected to the wrong ventricles and deoxygenated blood is pumped back to the body. 


Watch the following video animation to learn more about this condition and treatment options.

For additional information, or to make an appointment, please contact the center for Advanced Fetal Care at 410-328-3865.

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