Transesophageal Echocardiography to Evaluate Success of Transcatheter Closure of Large Secundum Atrial Septal Defects in Adults Using the Buttoned Device

To determine the success rate of transcatheter closure of secundum atrial septal defects (ASDs) in adults and to characterize anatomical structures predisposing to unsatisfactory results. Preinterventional and follow-up transesophageal echocardiography of 17 consecutive patients treated with a Sideris buttoned device was reviewed. Residual jet size of 5 mm or smaller was considered an adequate result; jet size larger than 5 mm was inadequate. Maximal ASD diameter, ASD area, and anterior, posterior, superior, and inferior septal rims were measured. The 7 patients with adequate results (41 %) had smaller defects before implantation of a buttoned device (mean ± SD maximal ASD diameter, 12±4 vs 19±5 mm; P