Atrioventricular septal defect (AVSD) Atrioventricular Septal Defects (AVSD) atrioventricular septal defect Atrioventricular septal defect www.cdc.gov/ncbddd/heartdefects/avsd.html Atrioventricular septal defect Atrioventricular Septal Defects [cdc.gov] Atrioventricular septal defect atrioventricular canal defect complete atrioventricular septal defect [cdc.gov] Atrioventricular Septal Defect [cdc.gov] [cdc.gov] AVSD