Surgical results of double-orifice left atrioventricular valve associated with atrioventricular septal defects.

Background: Double-orifice left atrioventricular valve (LAVV) is a rare but surgically important anomaly, which is regarded as a risk factor for surgical correction of atrioventricular septal defects (AVSDs).

Methods: Of 209 consecutive patients with AVSDs, double-orifice LAVV was identified in 19 patients (9.1%, including 7 infants).