An ostium primum atrial septal defect (ASD) occurs when then atrial septum near the atrioventricular valves has a communication between the two atrium causing a left to right shunt. This rarely ...

An atrial septal defect of the secundum type is relatively common and occurs from failure of the septum secundum to develop. This results in a communication between the left and right atrium ...

Case 1. A 17-year-old boy was admitted to Walter Reed General Hospital for repair of an ostium-primum defect of the interatrial septum with an associated cleft mitral valve and mitral insufficiency.

Diagnosing a secundum ASD is more often than not incidental ... with bacterial endocarditis prophylaxis for primum, whereas for secundum and sinus defect, physical examination, Holter EKG and ...

Ostium secundum atrial septal defect (OSASD) occurs as an isolated defect in 10% of individuals with congenital heart disease (CHD). In small nuclear-family studies (parents and siblings), OSASD ...