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 ...

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.

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 ...

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What are the ECG findings of a secundum type atrial septal defect versus the primum type of atrial septal defect? The ECG of a patient with an atrial septal defect (ASD) should show a right bundle ...