Overview
Transposition of the great arteries (D-TGA) is a conotruncal abnormality characterized by discordant arterial-ventricular connections. In D-TGA, the aorta arises from right ventricle and pulmonary artery arises from left ventricle. The aorta is anterior and rightward. The pulmonary and aortic circulations are in parallel instead of in series.
Epidemiology
D-TGA occurs in ~31.5 in 100,000 live births. It is the 10th most common form of congenital heart disease, and the second most common cyanotic heart disease following Tetralogy of Fallot. There is a male predominance (2:1 male to female ratio).
Genetics
It is usually not hereditary, however, infants of diabetic mothers are at increased risk.
Associated lesions
Diagnosis
Clinical Presentation
Goals of the Echocardiography Exam
Surgery/Procedures