Double-Orifice Left Atrioventricular Valve in Patients With Atrioventricular Septal Defects: Surgical Strategies and Outcome

Repair of DOLAVV in AVSD can be performed with low risk, excellent late survival, and freedom from reoperation. The ZOA is typically closed unless the valve area appears small. In the majority of patients, the accessory orifice is competent and can be left alone. Late repeated repair may be difficult because of leaflet dysplasia.