title: [Short- and long- term results of percutaneous balloon valvuloplasty in pulmonary valve stenosis].
abstract: OBJECTIVE
  To assess the long-term results of percutaneous balloon valvuloplasty at a single institution.
  
  
  METHODS
  This study comprised 189 patients with pulmonary valve stenosis undergoing percutaneous balloon valvuloplasty from 1984 to 1996, whose mean age was 7.97+/-9.25 years. The procedure was classified as successful when the RV-PA gradient was reduced to levels < 36 mmHg; restenosis was indicated by RV-PA gradients > 36 mmHg after an effective procedure.
  
  
  RESULTS
  After the procedure, the peak-to-peak transvalvular gradient decreased from 70.12+/-30.06 to 25.11 +/-20.23 mmHg (P<0.001). Immediate success was obtained in 148 (78.72%) patients. A later reduction in the gradient to values < 36 mmHg was obtained in 24 other patients previously categorized as unsuccessful. Therefore, percutaneous balloon valvuloplasty was considered effective in 172 (91.01%) patients. Effectiveness increased to 93.53% (159/170) in the cases of typical morphology. Follow-up ranged from 4.39+/-3 years to 13.01 years. Restenosis was observed in 24 (13.95%) patients. Pulmonary regurgitation was detected in 95.1% of the patients, being more intense than mild in 29.5% of the patients. The probability of maintaining an appropriate result, at any time point, with no restenosis was 92.29% in 2 years, 87.38% in 5 years, 82.46% in 8 years, and 64.48% in 10 years.
  
  
  CONCLUSIONS
  Percutaneous balloon valvuloplasty was effective and safe for the treatment of pulmonary valve stenosis with excellent short- and long-term results.
authors.affiliation: Instituto de Cardiologia, RS/Fundação Universitária de Cardiologia. pesquisa@cardnet.tche.br
authors.forename: Domingos M
authors.initials: DM
authors.lastname: Hatem
authors.forename: Iran
authors.initials: I
authors.lastname: Castro
authors.forename: José Carlos
authors.initials: JC
authors.lastname: Haertel
authors.forename: Raul I
authors.initials: RI
authors.lastname: Rossi
authors.forename: Paulo
authors.initials: P
authors.lastname: Zielinsky
authors.forename: Flávio C
authors.initials: FC
authors.lastname: Leboute
authors.forename: Nara
authors.initials: N
authors.lastname: Pomar
authors.forename: Maristela
authors.initials: M
authors.lastname: Winckler
authors.forename: Rogério N
authors.initials: RN
authors.lastname: Kersten
authors.forename: Carlos Roberto
authors.initials: CR
authors.lastname: Cardoso
authors.forename: Carlos A M
authors.initials: CA
authors.lastname: Gottschall
mesh_terms: D000293:Adolescent; D000328:Adult; D001794:Blood Pressure; D002404:Catheterization / Q000379:methods*; D002648:Child; D002675:Child, Preschool; D015331:Cohort Studies; D015150:Echocardiography, Doppler; D005260:Female; D005500:Follow-Up Studies; D006439:Hemodynamics; D006801:Humans; D007223:Infant; D008297:Male; D008875:Middle Aged; D011666:Pulmonary Valve Stenosis / Q000628:therapy*; D013997:Time Factors; D016896:Treatment Outcome