title: Measured posterior annuloplasty for repair of non-ischemic mitral regurgitation. A single unit follow-up.
abstract: The aim of this report is to evaluate short- and long-term outcomes of annuloplasty method of our choice: measured posterior annuloplasty (MPA). MPA is a piece of a Duran ring cut to the length of free-edge of anterior mitral leaflet (AML) and anchored with multiple pledgeted U-sutures from trigone to trigone into the posterior annulus.
  
  
  METHODS
  From 1988 to 2000, 103 consecutive patients with non-ischemic mitral regurgitation were scheduled preoperatively to be repaired by MPA.
  
  
  RESULTS
  Preoperative mitral valve regurgitation (MR) grade was 3.8+/-0.5 and decreased to 0.1+/-0.3 (P<0.0001) after repair. One patient was converted to insertion of mechanical prosthesis after grade 3 MR persisted after septal myectomy and MPA. Three patients needed instant revision of the repair one due to SAM and two due to stenosis. No patient had a stenosis or unacceptable (>1) MR after the procedure. There was one operative death (1.0%) and 3 hospital/30-day deaths (2.9%). Sixteen patients (16.3%) expired during the follow-up to 91 months (mean 57.4+/-19.5, median 60 months) none due to failure of MPA. There were no reoperations due to failure of MPA. Three patients had a reoperation, one for dehiscence of reconstruction after P2 resection and two patients due to progression of anterior leaflet degeneration and calcification with 4+ MR. New York Heart Association (NYHA) functional classification decreased from 2.3+/-0.8 to 1.4+/-0.6 (P<0.0001) and only one patient had an increase from II to III. Eighty-eight patients (96.7%) were in NYHA class I-II. Ten patients had an increase of MR from 0 to trace or 1 and one from 0 to 2. Two patients were diagnosed with mild stenosis without need of reoperation.
  
  
  CONCLUSIONS
  MPA is a durable and stable alternative for repair of non-ischemic mitral regurgitation of different etiologies. The technique gives an objective measure of the length of the band and no patient is left with a significant MR or mitral valve stenosis (MS). First-time success rate is very high and instant repairs few and minor. Freedom of MPA related reoperations is 100%.
authors.affiliation: Department of Cardiothoracic Surgery, Heart Institute, Good Samaritan Hospital, Los Angeles, CA, USA. lathoracic@hotmail.com
authors.forename: Aarne
authors.initials: A
authors.lastname: Jyrala
authors.forename: Nicole M
authors.initials: NM
authors.lastname: Gatto
authors.forename: Gregory L
authors.initials: GL
authors.lastname: Kay
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D005500:Follow-Up Studies; D006350:Heart Valve Prosthesis; D019918:Heart Valve Prosthesis Implantation / Q000009:adverse effects / Q000295:instrumentation / Q000379:methods* / Q000401:mortality; D017052:Hospital Mortality; D006801:Humans; D053208:Kaplan-Meier Estimate; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D008944:Mitral Valve Insufficiency / Q000209:etiology / Q000401:mortality / Q000601:surgery*; D011474:Prosthesis Design; D012086:Reoperation; D012189:Retrospective Studies; D018570:Risk Assessment; D012307:Risk Factors; D012720:Severity of Illness Index; D013536:Suture Techniques; D013997:Time Factors; D016896:Treatment Outcome; D055815:Young Adult