An atrial septal defect is an opening in the wall that separates the upper chambers of the heart. It is one of the most common congenital heart defects, which are structural problems that develop ...
Atrial septal defect (ASD) is a hole in the wall between the heart’s two upper chambers. ASD is a congenital heart defect, meaning it is present from birth. In some cases of ASD, a small hole may only ...