Transposition of great arteries

Transposition of great arteries: Transposition of great arteries is a birth defect of the heart in which aorta originates from the right ventricle (instead of the normal left ventricle) and pulmonary artery arises from the left ventricle (instead of the normal right ventricle). This results in deoxygenated blood from the right ventricle reaching the body instead of the lungs. Hence these babies are blue at birth (cyanotic congenital heart disease).