Atrial flutter/fibrillation in patients receiving transcatheter closure of atrial septal defect

AFL/Af is common after ASD occluder implantation, and predisposed by older age, larger and multiple ASDs, and underlying disorders. Preoperative atrial arrhythmia status is the most important predictor of AFL/Af progression or resolution. Renin-angiotensin system gene polymorphisms had no association with AFL/Af.