title: A novel one-shot circular stapler closure for atrial septal defect in a beating-heart porcine model.
abstract: OBJECTIVE
  In surgical atrial septal defect (ASD) closure, there are no techniques or devices that can close the ASD accurately in a short time under a beating heart. We have developed a simple and automatic ASD closure technique using a circular stapler. This study assessed the feasibility and efficacy of a new circular stapler closure for ASD.
  
  
  METHODS
  Under a continuous beating heart, hand-sewn patch plasty ASD closure was performed in 6 pigs (group A) and circular stapler ASD closure was performed in 6 pigs (group B). The time to close the ASD and the effectiveness of the closure were compared.
  
  
  RESULTS
  Closure was significantly faster in group B (10.5 ± 1.0 seconds) than in group A (664 ± 10 seconds; p < 0.05). There was no leakage at the closure site, and sufficient tolerance was confirmed.
  
  
  CONCLUSIONS
  A circular stapler can be used to treat ASD faster than hand-sewn patch plasty, with sufficient pressure tolerance in a beating heart porcine model.
authors: Department of General and Cardiothoracic Surgery, Kanazawa University School of Medicine, Kanazawa, Japan. Electronic address: tatsuya.tarui@gmail.com.
authors: Tatsuya
authors: T
authors: Tarui
authors: Department of General and Cardiothoracic Surgery, Kanazawa University School of Medicine, Kanazawa, Japan.
authors: Shigeyuki
authors: S
authors: Tomita
authors: Department of General and Cardiothoracic Surgery, Kanazawa University School of Medicine, Kanazawa, Japan.
authors: Norihiko
authors: N
authors: Ishikawa
authors: Department of General and Cardiothoracic Surgery, Kanazawa University School of Medicine, Kanazawa, Japan.
authors: Hiroshi
authors: H
authors: Ohtake
authors: Department of General and Cardiothoracic Surgery, Kanazawa University School of Medicine, Kanazawa, Japan.
authors: Go
authors: G
authors: Watanabe
mesh_terms: D000818:Animals; D006348:Cardiac Surgical Procedures / Q000379:methods; D004195:Disease Models, Animal; D004867:Equipment Design; D005240:Feasibility Studies; D005260:Female; D006344:Heart Septal Defects, Atrial / Q000601:surgery*; D013528:Surgical Staplers; D017792:Surgical Stapling / Q000379:methods*; D013552:Swine