The role of 3D transesophageal echocardiography during percutaneous closure of atrial septal defect

Isolated secundum atrial septal defects account for approximately 7% of congenital cardiac defects. Transcatheter closure of atrial septal defect (ASD) is an alternative approach to surgery in selected patients. The emergence of this therapeutic option for ASD’s mandates accurate delineation of their morphology and anatomical relationships. Live 3D TEE is a relatively new technology capable of obtaining unprecedented images of cardiac morphology as it allows a greater appreciation of spatial relationships within the heart.