title: A new technique for debridement in rheumatic valvular disease: the rasping procedure.
abstract: BACKGROUND
  Valve repair is superior to valve replacement in terms of postoperative risk. However, the conventional techniques used for valve repair in patients with rheumatic valvular disease have not resulted in a good long-term outcome.
  
  
  METHODS
  We developed a novel "rasping procedure" using an electric rasper for debridement in rheumatic valvular diseases. Between April 1986 and December 1996, the rasping procedure was performed on the aortic valve (A-rasping) of 24 patients who exhibited moderate stenosis with mild regurgitation. Between June 1992 and December 1996, this procedure was performed on the mitral valve (M-rasping) of 12 patients who exhibited mitral stenosis with mild regurgitation.
  
  
  RESULTS
  Among the 24 patients on whom A-rasping was performed, 4 patients did not show any improvement after the A-rasping procedure, and required valve replacement. In each of the remaining 20 cases, the transvalvular pressure gradient decreased, and regurgitation disappeared, or was reduced to a trivial level. In all 12 patients on whom M-rasping was performed, the transvalvular pressure gradient significantly decreased, orifice area significantly increased, and the regurgitation disappeared. Postoperative echocardiographic examinations were performed during a mean follow-up period of 110 months in the patients who received A-rasping, and that of 50 months in the patients who received M-rasping. A significant change in the valve requiring subsequent surgery was not seen in any of the patients.
  
  
  CONCLUSIONS
  The rasping procedure is an effective technique for excising rheumatic valvular hypertrophic lesions. It resulted in good intermediate to long-term outcome.
authors.affiliation: Department of Surgery I, Kumamoto University School of Medicine, Japan.
authors.forename: N
authors.initials: N
authors.lastname: Kitamura
authors.forename: S
authors.initials: S
authors.lastname: Uemura
authors.forename: R
authors.initials: R
authors.lastname: Kunitomo
authors.forename: J
authors.initials: J
authors.lastname: Utoh
authors.forename: S
authors.initials: S
authors.lastname: Noji
mesh_terms: D000328:Adult; D000368:Aged; D001021:Aortic Valve / Q000000981:diagnostic imaging / Q000601:surgery; D001022:Aortic Valve Insufficiency / Q000601:surgery; D001024:Aortic Valve Stenosis / Q000601:surgery; D001794:Blood Pressure / Q000502:physiology; D003646:Debridement / Q000295:instrumentation / Q000379:methods*; D004452:Echocardiography; D004867:Equipment Design; D005260:Female; D005500:Follow-Up Studies; D006349:Heart Valve Diseases / Q000601:surgery*; D019918:Heart Valve Prosthesis Implantation; D006801:Humans; D008137:Longitudinal Studies; D008297:Male; D008875:Middle Aged; D008943:Mitral Valve / Q000000981:diagnostic imaging / Q000601:surgery; D008944:Mitral Valve Insufficiency / Q000601:surgery; D008946:Mitral Valve Stenosis / Q000601:surgery; D012214:Rheumatic Heart Disease / Q000601:surgery*; D012307:Risk Factors; D016896:Treatment Outcome