Atrioventricular Canal Surgery
Atrioventricular canal (AV canal, endocardial cushion defect) is present at birth and includes:
- An atrial septal defect (ASD) low in the atrium
- A ventricular septal defect (VSD) high in the ventricle
- A common atrioventricular valve
This defect occurs when center of the heart does not form properly and varies in severity.