Atrial septal defect (ASD) is a congenital abnormality of the interatrial septum that enables blood flow between the left and right atria via the interatrial septum.
ASD
;
An opening in the wall separating the top two chambers of the heart
;
Atria septal defect
;
Atrial septum defect
;
Atrioseptal defect
;
Defect in the atrial septum
;
Hole in heart wall separating two upper heart chambers