title: Transcatheter closure of atrial septal defects with the Amplatzer septal occluder--a Japanese clinical trial.
abstract: This study reports the results of a Japanese clinical trial of transcatheter closure of atrial septal defects (ASD) using the Amplatzer septal occluder (ASO). Thirty-five patients with secundum ASD underwent transcatheter closure using the ASO at a median age of 12.9 years (range, 3.2-29.2 years) and a median weight of 39.2kg (range, 11.6-65.1 kg). The ASO was successfully implanted in 34 patients. The mean ASD diameter of the 34 patients measured by transesophageal echocardiography was 11.7 +/- 4.2mm (range, 5.0-20.8mm) and the mean balloon stretched diameter was 16.8 +/- 4.2 mm (range, 9-25 mm). The mean ASO size was 16.9 +/- 4.3 mm (range, 9-26mm). Complete closure rate at 1 day and 1 year after closure was 91% and 97%, respectively. One patient developed a transient second-degree atrioventricular block during the implantation procedure. No other complications occurred. Transcatheter closure of ASD using the ASO is effective and safe.
authors.affiliation: Division of Cardiology, National Children's Hospital, Tokyo, Japan.
authors.forename: Shinichi
authors.initials: S
authors.lastname: Oho
authors.forename: Akira
authors.initials: A
authors.lastname: Ishizawa
authors.forename: Teiji
authors.initials: T
authors.lastname: Akagi
authors.forename: Hidemi
authors.initials: H
authors.lastname: Dodo
authors.forename: Hirohisa
authors.initials: H
authors.lastname: Kato
mesh_terms: D000293:Adolescent; D000328:Adult; D015906:Angioplasty, Balloon, Coronary / Q000379:methods*; D002648:Child; D002675:Child, Preschool; D017548:Echocardiography, Transesophageal; D005260:Female; D006344:Heart Septal Defects, Atrial / Q000000981:diagnostic imaging / Q000628:therapy*; D006801:Humans; D008297:Male; D019736:Prostheses and Implants; D016896:Treatment Outcome