<unk>  are ASDs at the level of fossa ovalis. It accounts for 75% of all atrial septal defects.
Atrial septal defect ostium secundum
Atrial septal defect ostium primum
Atrial septal defect coronary sinus
Atrial septal defect sinus venosus
Atrial septal defect migraine
Interrupted aortic arch
Atrioventricular septal defect
Atrial septal defect decompression sickness