title: [Do mitral valve components have the same predictive value in percutaneous balloon mitral valvuloplasty? Doppler echocardiography study].
abstract: OBJECTIVE
  To evaluate the predictive value of mitral valve components in percutaneous balloon mitral valvuloplasty (PBMV).
  
  
  METHODS
  53 patients undergoing PBMV were submitted to an echocardiographic analysis of mitral valve in order to note mobility, thickness, calcification of leaflets and subvalvar apparatus (SV). Mitral valve area (VA) before and after PBMV was obtained using continuous wave Doppler. Patients were divided in group 1 (VA enhance inferior to 50%) and 2 (VA enhance equal or superior to 50%) and subgroups A (VA post PBMV inferior to 1.5 sqcm) and B (VA post PBMV equal or superior to 1.5 sqcm). Correlations between the score of each component of mitral valve and the results were established.
  
  
  RESULTS
  Concerning to the total score, there was no significant difference between the groups and subgroups. Differences were significant when SV was analysed separately (p less than or equal to 0.001). VA average in patients with SV compromising grade 3 (1.28 +/- 0.26 sqcm) was inferior to those with grade 1 or 2 (p less than or equal to 0.001).
  
  
  CONCLUSIONS
  SV has a higher predictive value in the success of PBMV.
authors.affiliation: Instituto do Coração do Hospital das Clínicas-FMUSP, São Paulo.
authors.forename: C C
authors.initials: CC
authors.lastname: Medeiros
authors.forename: A V
authors.initials: AV
authors.lastname: de Moraes
authors.forename: L F
authors.initials: LF
authors.lastname: Cardoso
authors.forename: M A
authors.initials: MA
authors.lastname: Rati
authors.forename: H
authors.initials: H
authors.lastname: Abensur
authors.forename: J G
authors.initials: JG
authors.lastname: de Azevedo
authors.forename: J R
authors.initials: JR
authors.lastname: Parga Filho
authors.forename: T C
authors.initials: TC
authors.lastname: Martins
authors.forename: M
authors.initials: M
authors.lastname: Grinberg
authors.forename: P J
authors.initials: PJ
authors.lastname: Moffa
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D006328:Cardiac Catheterization; D002404:Catheterization; D015150:Echocardiography, Doppler; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D008946:Mitral Valve Stenosis / Q000000981:diagnostic imaging / Q000628:therapy*
vernacular_title: São os componentes do aparelho valvar mitral de mesmo valor preditivo na valvoplastia mitral por cateter balão? Estudo ecodopplercardiográfico.