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 ...

OVER the past seven years approximately 400 patients have been surgically treated at the Massachusetts General Hospital with the assistance of cardiopulmonary bypass. The majority of these patients ...

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.

An atrial septal defect should show a right bundle branch block, or RBBB ― sometimes incomplete ― on ECG. This is partially due to the right ventricular volume and pressure overload that occurs. When ...

An atrial septal defect is a congenital heart issue. According to the Centers for Disease Control and Prevention (CDC), it develops in about 1 in 1,859 babies in the United States. An atrial septal ...