Filling the Holes of a Swiss Cheese Atrial Septal Defect: A Case Report and Review of the Literature

Abstract

Swiss cheese atrial septal defect (ASD) is a structural finding of the heart used to characterize multiple or fenestrated interatrial defects found in approximately 10% of patients with ASD. Presence of an aneurysm in the atrial septum is an additional malformation associated with fenestrated ASD that further increases the risk of arrhythmia and thromboembolic events. Detailed anatomy of the interatrial septum through 2D and 3D imaging serves as diagnostic and therapeutic guidance. We describe a case of Swiss Cheese ASD complicated with an atrial septal aneurysm successfully repaired with a Cribriform Amplatzer Septal Occluder (ASO) via percutaneous transcatheter approach.