Upsizing of GORE® Cardioform ASD Occluder for Atrial Septal Defect With Atrial Septal Aneurysm.

Atrial septal defects (ASDs) often present with multiple foramina, including a patent foramen ovale (PFO) and atrial septal aneurysms (ASAs). Transcatheter device closure of an ASD may require additional supportive techniques in complex cases. Here, we report a case of a secundum ASD complicated by an ASA and a PFO in a man in his 50s. A GORE® Cardioform ASD Occluder (GCA) device of the optimal size for balloon sizing was implanted. However, edge leakage occurred from the front of the device because of a large, moving ASA. Implantation of a two-size-up GCA device successfully closed the ASD under controlled ASA movement.