title: Redo valve surgery with on-pump beating heart technique.
abstract: OBJECTIVE
  Reoperations have become of increasing frequency in the last four decades. Redo surgery is more complex than primary surgery and is associated with higher mortality and morbidity. We present our immediate and mid-term results of mitral and aortic prosthetic valve replacement undertaken with beating heart technique.
  
  
  METHODS
  The prospective study included 26 consecutive redo valve surgery patients who underwent valve re-replacement. The operation was carried out on a beating heart using normothermic bypass without cross-clamping the aorta for mitral valve surgery and retrograde coronary sinus normothermic noncardioplegic blood perfusion during cross-clamping the aorta for aortic valve procedures.
  
  
  RESULTS
  Twenty-six patients (mean age 50+/-15 years) underwent reoperation with beating heart technique. Twenty (76.9%) mitral prosthetic replacements, 4 (15.4%) aortic prosthetic replacements, and 2 (7.7%) double valve replacements were achieved. Fourteen patients (53.8%) were operated for prosthetic valve dysfunction. Eighteen patients (69.2%) were in NYHA class III or IV preoperatively. Mean bypass time was 85+/-30 min. Mean duration of ventilation was 13.6+/-6 h, mean intensive unit stay was 2.8+/-6.4 days, and mean hospital stay was 8.3+/-7.2 days. Two (7.7%) patients required high dose inotropic support and in one patient (3.8%) intra-aortic balloon support was required. Pulmonary complication occurred in 1 patient (3.8%), low cardiac output in 1 patient (3.8%), and re-exploration for bleeding in 2 patients (7.7%). Operative mortality was not observed.
  
  
  CONCLUSIONS
  Normothermic on-pump beating heart valve replacement offers a safe alternative to cardioplegic arrest in high-risk group. Complication rates are low and perioperative mortality is lower than with conventional surgery. Beating heart technique has the advantage of maintaining physiologic condition of the heart throughout the procedure.
authors.affiliation: Department of Cardiovascular Surgery, Turkiye Yuksek Ihtisas Hospital, 06100 Sihhiye, Ankara, Turkey. fehmiege@yahoo.com
authors.forename: F
authors.initials: F
authors.lastname: Cicekcioglu
authors.forename: U
authors.initials: U
authors.lastname: Tutun
authors.forename: S
authors.initials: S
authors.lastname: Babaroglu
authors.forename: U
authors.initials: U
authors.lastname: Mungan
authors.forename: A I
authors.initials: AI
authors.lastname: Parlar
authors.forename: E
authors.initials: E
authors.lastname: Demirtas
authors.forename: A
authors.initials: A
authors.lastname: Aksoyek
authors.forename: Z
authors.initials: Z
authors.lastname: Catav
authors.forename: S F
authors.initials: SF
authors.lastname: Katircioglu
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001021:Aortic Valve; D002315:Cardiopulmonary Bypass / Q000379:methods*; D005260:Female; D005500:Follow-Up Studies; D006349:Heart Valve Diseases / Q000175:diagnosis / Q000209:etiology / Q000601:surgery*; D019918:Heart Valve Prosthesis Implantation / Q000379:methods*; D006801:Humans; D008297:Male; D008875:Middle Aged; D008943:Mitral Valve; D011446:Prospective Studies; D012086:Reoperation / Q000379:methods; D016896:Treatment Outcome