title: Beating heart mitral valve replacement with a bovine pericardial bioprosthesis for treatment of mitral valve dysplasia in a Bull Terrier.
abstract: OBJECTIVE
  To describe an open, beating heart surgical technique and use of a bovine pericardial prosthetic valve for mitral valve replacement (MVR) in the dog.
  
  
  METHODS
  Clinical case report.
  
  
  METHODS
  Male Bull Terrier (17-month-old, 26 kg) with mitral valve dysplasia and severe regurgitation.
  
  
  METHODS
  A bovine pericardial bioprosthesis was used to replace the mitral valve using an open beating heart surgical technique and cardiopulmonary bypass.
  
  
  RESULTS
  Successful MVR was achieved using a beating heart technique. Mitral regurgitation resolved and cardiac performances improved (left ventricular end-diastolic diameter decreased from 57.6 to 48.7 mm, and left atrium/aorta ratio returned to almost normal, from 1.62 to 1.19). Cardiopulmonary by-pass time and total surgical duration were decreased compared with standard cardioplegic techniques. Surgical recovery was uneventful and on echocardiography 6 months later valve function was excellent.
  
  
  CONCLUSIONS
  Considering the technique advantages (no cardiac arrest, ischemic reperfusion injury, and hypothermia, or the need for aortic dissection and cannulation for administration of cardioplegic solution), short-term mortality and morbidity may be reduced compared with standard cardioplegic techniques.
  
  
  CONCLUSIONS
  Based on experience in this dog, beating heart mitral valvular replacement is a seemingly safe and viable option for the dog and bovine pericardial prosthesis may provide better long-term survival than mechanical prostheses.
authors.affiliation: IMM-RESEARCH, Paris, France. lic.behr@imm.fr
authors.forename: Luc
authors.initials: L
authors.lastname: Behr
authors.forename: Valérie
authors.initials: V
authors.lastname: Chetboul
authors.forename: Carolina Carlos
authors.initials: CC
authors.lastname: Sampedrano
authors.forename: Gouni
authors.initials: G
authors.lastname: Vassiliki
authors.forename: Jean-Louis
authors.initials: JL
authors.lastname: Pouchelon
authors.forename: François
authors.initials: F
authors.lastname: Laborde
authors.forename: Nicolas
authors.initials: N
authors.lastname: Borenstein
mesh_terms: D000818:Animals; D001705:Bioprosthesis / Q000662:veterinary*; D002417:Cattle; D004283:Dog Diseases / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery*; D004285:Dogs; D006350:Heart Valve Prosthesis / Q000662:veterinary*; D019918:Heart Valve Prosthesis Implantation / Q000662:veterinary*; D008297:Male; D008943:Mitral Valve; D008946:Mitral Valve Stenosis / Q000601:surgery / Q000662:veterinary*; D010496:Pericardium / Q000637:transplantation*; D014463:Ultrasonography