title: [Mitral stenosis correction by double catheter-balloon valvuloplasty technique].
abstract: OBJECTIVE
  To evaluate long-term efficacy of double balloon percutaneous mitral valvuloplasty technique (PMV2B).
  
  
  METHODS
  Sixty-eight patients (76% female), mean-age 32 (15-69) years who had been submitted to PMV2B, that completed clinical and echodopplercardiographic one year follow-up (PO12M). Admission criteria were: exertional dyspnoea, no thromboembolism antecedent up to three months before the procedure, absence of other cardiac disease requiring correction, an admissible echodopplercardiographic score, absence of intracavitary thrombus and mitral regurgitation absent or minor.
  
  
  RESULTS
  The patients were divided in two groups: group A of 7 (11%) patients that have a cardiac event in this period, and group B of 61 patients that completed the follow-up without a cardiac event. In group A three patients have had a severe mitral regurgitation, one case was unsuccessful and other one had a re-stenosis. There were two deaths, not related to the intervention. In group B, haemodynamic results before and immediately after PMV2B (POI) showed a significant improvement, except in relation to cardiac index. There was an increase in the grade of mitral regurgitation in 17 (28%) patients and in two cases this regurgitation became moderate. The mitral valvar area (MVA) variation between PRE x POI x PO12M presented, comparing MVA between POI and PO12M, a significant reduction. Two (3%) patients with a reduction greater than 50% of the initial increase, 33 (54%) between 10 and 50% and 26 (42%) less that 10% remained in functional class I/II.
  
  
  CONCLUSIONS
  PMV2B is an attractive treatment to select symptomatic mitral stenosis patients, with a low incidence of complications, symptomatic effective improvement that was maintained in one year follow-up, although there was a reduction in MVA.
authors.affiliation: Instituto do Coração do Hospital das Clínicas-FMUSP.
authors.forename: C V
authors.initials: CV
authors.lastname: Ayres
authors.forename: L F
authors.initials: LF
authors.lastname: Cardoso
authors.forename: M
authors.initials: M
authors.lastname: Grinberg
authors.forename: M A
authors.initials: MA
authors.lastname: Rati
authors.forename: C C
authors.initials: CC
authors.lastname: Medeiros
authors.forename: F
authors.initials: F
authors.lastname: Tarasoutchi
authors.forename: W S
authors.initials: WS
authors.lastname: Avila
authors.forename: E G
authors.initials: EG
authors.lastname: Rossi
authors.forename: G
authors.initials: G
authors.lastname: Bellotti
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002404:Catheterization; D005260:Female; D005500:Follow-Up Studies; D006439:Hemodynamics; D006801:Humans; D008297:Male; D008875:Middle Aged; D008946:Mitral Valve Stenosis / Q000503:physiopathology / Q000628:therapy*
vernacular_title: Correção de estenose mitral através de valvoplastia por técnica de duplo cateter-balão.