Term Name:	atrioventricular septal defect
Synonyms:	atrioventricular canal defect, AVCD, AVSD, ECD, endocardial cushion defect
Definition:	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.
Ontology:	Human Disease [DOID:0050651]   ( DOID:0050651 )