Doppler echocardiogram of atrioventricular (AV) canal defect with AV valve regurgitation

Two-dimensional color-flow Doppler four-chamber image across common AV valve in systole in a patient with an AV canal defect. In the right panel, color Doppler image demonstrates right AV valve regurgitation (asterisk), left AV valve regurgitation (double asterisk) and left-to-right shunting (arrow).