title: Surgical closure of an atrial septal defect using cardiopulmonary bypass in a cat.
abstract: OBJECTIVE
  To describe surgical repair of a large atrial septal defect (ASD) in a cat.
  
  
  METHODS
  Clinical report.
  
  
  METHODS
  A 3-year-old, 3.3 kg, intact male Japanese domestic short-haired cat.
  
  
  METHODS
  A 10.2-mm-diameter ASD detected by echocardiography was surgically corrected because pulmonary vascular resistance-to-systemic vascular resistance ratio (Qp /Qs ) was 3.2. Using cardiopulmonary bypass (CPB), open surgical repair was achieved with an expanded polytetrafluoroethylene (e-PTFE) graft. The priming volume of the CPB circuit was minimized by cutting the CPB tubing, and partially replacing the priming fluid with whole cat blood. To prevent hemodilution associated with use of cardioprotective agents, surgery was performed on the beating heart.
  
  
  RESULTS
  At 1-year echocardiographic evaluation, the repair was intact, and at 3 years, the cat was alive without need of medication.
  
  
  CONCLUSIONS
  Large ASD in a cat can be repaired using e-PTFE under CPB.
authors.affiliation: Veterinary Cardiovascular Medicine and Surgery Unit, Department of Veterinary Medicine, College of Bioresource Sciences, Nihon University, Kanagawa, Japan. estebanpujol@gmail.com
authors.forename: Masami
authors.initials: M
authors.lastname: Uechi
authors.forename: Kayoko
authors.initials: K
authors.lastname: Harada
authors.forename: Takahiro
authors.initials: T
authors.lastname: Mizukoshi
authors.forename: Takeshi
authors.initials: T
authors.lastname: Mizuno
authors.forename: Masashi
authors.initials: M
authors.lastname: Mizuno
authors.forename: Takashi
authors.initials: T
authors.lastname: Ebisawa
authors.forename: Yuzuru
authors.initials: Y
authors.lastname: Ohta
mesh_terms: D000818:Animals; D002315:Cardiopulmonary Bypass / Q000662:veterinary*; D002371:Cat Diseases / Q000601:surgery*; D002415:Cats; D006344:Heart Septal Defects, Atrial / Q000601:surgery / Q000662:veterinary*; D008297:Male