Echocardiographic features of supracristal ventricular septal defect with prolapsed aortic valve leaflet

Anatomically diagnostic echocardiographic features of a supracristal ventricular septal defect with prolapsed right coronary aortic leaflet are described in four children aged 2 to 10 years. Both single crystal M mode as well as 80 ° phased array sector scan techniques were used. The echographic features in the M mode scan from the aorta to the left ventricle in three of four patients included (1) the position of the ventricular septal defect as a clear space between the interrupted septal echoes below the aortic root, and (2) the prolapsed right coronary aortic leaflet as anomalous linear echoes in the right ventricular outflow tract. Angiographic, intraoperative and echocardiographic contrast studies were used to establish the diagnosis.