title: Outcome of transcatheter closure of oval shaped atrial septal defect with amplatzer septal occluder.
abstract: OBJECTIVE
  For the successful completion of transcatheter closure of atrial septal defects with the Amplatzer septal occluder, shape of the defects should be considered prior to selecting the device. The purpose of this study is to evaluate the results of a transcatheter closure of oval shaped atrial septal defect.
  
  
  METHODS
  From November 2009 until November 2011, cardiac computed tomography was performed on 69 patients who needed a transcatheter closure of atrial septal defect. We defined an oval shaped atrial septal defect as the ratio of the shortest diameter to the longest diameter ≤ 0.75 measured using computed tomography. A trans-thoracic echocardiogram was performed one day after and six months after.
  
  
  RESULTS
  The transcatheter closure of atrial septal defect was performed successfully in 24 patients in the ovoid group and 45 patients in the circular group. There were no serious complications in both groups and the complete closure rate at 6 months later was 92.3% in the ovoid group and 93.1% in the circular group (p>0.05). The differences between the device size to the longest diameter of the defect and the ratios of the device size to the longest diameter were significantly smaller in the ovoid group (1.8 ± 2.8 vs. 3.7 ± 2.6 and 1.1 ± 0.1 vs. 1.2 ± 0.2).
  
  
  CONCLUSIONS
  Transcatheter closure of an oval shaped atrial septal defect was found to be safe with the smaller Amplatzer septal occluder device when compared with circular atrial septal defects.
authors.affiliation: Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul 135-710, Korea. amyjys@naver.com
authors.forename: Jinyoung
authors.initials: J
authors.lastname: Song
authors.forename: Sang Yoon
authors.initials: SY
authors.lastname: Lee
authors.forename: Jae Sook
authors.initials: JS
authors.lastname: Baek
authors.forename: Woo Seub
authors.initials: WS
authors.lastname: Shim
authors.forename: Eun Young
authors.initials: EY
authors.lastname: Choi
mesh_terms: D004452:Echocardiography; D006344:Heart Septal Defects, Atrial / Q000473:pathology / Q000601:surgery*; D006801:Humans; D008875:Middle Aged; D011183:Postoperative Complications; D056910:Republic of Korea; D012189:Retrospective Studies; D055989:Septal Occluder Device / Q000009:adverse effects*; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome
keywords: Congenital heart disease; atrial septal defect; cardiac computed tomography; device closure; transcatheter intervention
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