title: [Long-term results of repair surgery of degenerative mitral insufficiency].
abstract: BACKGROUND
  Mitral valve repair is probably the procedure of choice for the surgical treatment of degenerative mitral insufficiency.
  
  
  OBJECTIVE
  To evaluate the late results of mitral valve repair in degenerative mitral insufficiency.
  
  
  METHODS
  The records of 88 patients who underwent mitral valve repair for degenerative mitral insufficiency from December 1991 through June 2002 were reviewed. Mean age was 59.9 years (range 22 to 82). At least moderate mitral insufficiency was present in every patient. Mean left atrial diameter was 55 mm and mean end diastolic and end systolic left ventricular diameters were 61 and 37 mm respectively.
  
  
  RESULTS
  The most common underlying lesion was ruptured chordae tendineae (66%) and posterior leaflet prolapse (68%). The surgical procedure most frequently performed was quadrilateral resection of the posterior leaflet (68%). A Carpentier-Edwards ring was placed in 97% of patients. An associated procedure was performed in 34%. Operative mortality was 2.3%. A complete follow up was obtained in 93% of cases with a mean of 54 +/- 36 months. Overall survival rate was 98% at one year, 88% at 5 and 82% at 10 years. Free of cardiac death rates were 94% at 5 and 89% at 10 years. Only 2 patients were reoperated during follow up, resulting in a 98% reoperation free rate follow up. Functional class improved in all patients at the end of follow up. Late echocardiographic evaluation showed absent or minimal mitral regurgitation in 83% and mild mitral regurgitation in 17%.
  
  
  CONCLUSIONS
  Good late results have been obtained with mitral valve repair, avoiding the inconveniences of prosthetic replacement. Therefore, mitral valve repair should be the procedure of choice to treat degenerative mitral insufficiency.
authors.affiliation: Departamento de Enfermedades Cardiovasculares, Facultad de Medicina, Pontificia Universidad Católica de Chile. rzalaque@med.puc.cl
authors.forename: Ricardo
authors.initials: R
authors.lastname: Zalaquett
authors.forename: Cristóbal
authors.initials: C
authors.lastname: Camplá
authors.forename: Samuel
authors.initials: S
authors.lastname: Córdova
authors.forename: Sandra
authors.initials: S
authors.lastname: Braun
authors.forename: Gastón
authors.initials: G
authors.lastname: Chamorro
authors.forename: Manuel
authors.initials: M
authors.lastname: Irarrázaval
authors.forename: Sergio
authors.initials: S
authors.lastname: Morán
authors.forename: Pedro
authors.initials: P
authors.lastname: Becker
authors.forename: Iván
authors.initials: I
authors.lastname: Godoy
authors.forename: Fernando
authors.initials: F
authors.lastname: Yáñez
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D018572:Disease-Free Survival; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D008944:Mitral Valve Insufficiency / Q000175:diagnosis / Q000209:etiology / Q000601:surgery*; D011336:Probability; D016896:Treatment Outcome