Echocardiographic evaluation in transposition of the great arteries in the adult.

Transposition of the great arteries is marked by ventriculo-arterial discordance and occurs in 2 distinct subtypes. Echocardiography is the primary method of evaluating this condition in the adult. Key elements of the echocardiographic exam include confirming the diagnosis, evaluating ventricular size and function, assessing valvular regurgitation, identifying atrial baffle leaks or obstruction, estimating pulmonary artery pressures, and ruling out residual shunts.