Transposition of the great arteries

Transposition of the great arteries (TGA) is a form of cyanotic congenital heart disease. It is caused from the failure of the aorticopulmonary septum to spiral during septation. Children of diabetic mothers are at an increased risk of TGA.

Key features

• aorta leaves the right ventricle
• pulmonary trunk leaves the left ventricle

Surgical correction is the definite treatment.