atrioventricular septal defect

A congenital heart septal defect characterized by an abnormal or inadequate fusion of the superior and inferior endocardial cushions with the mid portion of the atrial septum and the muscular portion of the ventricular septum, thus allowing extra blood to circ

A congenital heart septal defect characterized by an abnormal or inadequate fusion of the superior and inferior endocardial cushions with the mid portion of the atrial septum and the muscular portion of the ventricular septum, thus allowing extra blood to circulate the lungs.

Signs and symptoms

• Hypoplastic left ventricle
• Atrioventricular canal defect
• Muscular ventricular septal defect
• Primum atrial septal defect

Also known as: AVCD; AVSD; ECD; atrioventricular canal defect; endocardial cushion defect