We report two cases of complete transposition of the great arteries with pulmonary
venous obstruction which was diagnosed by intraoperative transesophageal echocardiography,
but was not detected by transthoracic echocardiography and cardiac catheterization.
The pulmonary venous obstruction was relieved simultaneously with arterial switch
operation. The intraoperative transesophageal echocardiography has great contribution
for thorough evaluation of the pulmonary venous return of the patients.
Pulmonary venous obstruction - - Arterial switch operation - - Transposition of
the great arteries - - Transesophageal echocardiography
