Short- and long- term results of percutaneous balloon valvuloplasty in pulmonary valve stenosis

• Autor(a) principal: Zielinsky, Paulo
• Data de Publicação: 2004
• Outros Autores: Hatem, Domingos Mohamed, Castro, Iran, Haertel, Jose Carlos de Araujo, Rossi Filho, Raul Ivo, Leboute, Flavio C., Pomar, Nara Regina Alvaro, Winckler, Maristela, Kersten, Rogerio N., Cardoso, Carlos Roberto, Gottschall, Carlos Antonio de Mascia
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Repositório Institucional da UFRGS
• Texto Completo: http://hdl.handle.net/10183/20126
• topic: Estenose da valva pulmonar; Ecocardiografia; Valvuloplasty; Pulmonary valve stenosis; Results; Echocardiography

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 ³ 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. Conclusion - Percutaneous balloon valvuloplasty was effective and safe for the treatment of pulmonary valve stenosis with excellent short- and long-term results.