Atrioventricular Septal Defect What Is Atrioventricular Septal Defect (AVSD)? Atrioventricular Septal Defect or AV Canal (AVSD) An atrioventricular septal defect (AVSD) is a heart defect in which there are holes between Read More 1 250 February 23, 2018 0 1 250