RESUMEN
BACKGROUND: Percutaneous mitral balloon valvuloplasty (PMV) results in good immediate results, particularly in patients with echocardiographic scores (Echo-Sc) < or =8. However, which variables relate to long-term outcome is unclear. METHODS AND RESULTS: We report the immediate and long-term clinical follow-up (mean, 4.2+/-3.7 years; range, 0.5 to 15) of 879 patients who underwent 939 PMV procedures. Patients were divided into 2 groups, Echo-Sc < or =8 (n=601) and Echo-Sc >8 (n=278). PMV resulted in an increase in mitral valve area from 1.0+/-0.3 to 2.0+/-0.6 cm2 in patients with Echo-Sc < or =8 and from 0.8+/-0.3 to 1.6+/-0.6 cm2 in patients with Echo-Sc >8 (P<0.0001). Although adverse events (death, mitral valve surgery, and redo PMV) were low within the first 5 years of follow-up, a progressive number of events occurred beyond this period. Nevertheless, survival (82% versus 57%) and event-free survival (38% versus 22%) at 12-year follow-up was greater in patients with Echo-Sc < or =8 (P<0.0001). Cox regression analysis identified post-PMV mitral regurgitation > or =3+, Echo-Sc >8, age, prior surgical commissurotomy, NYHA functional class IV, pre-PMV mitral regurgitation > or =2+, and higher post-PMV pulmonary artery pressure as independent predictors of combined events at long-term follow-up. CONCLUSIONS: The immediate and long-term outcome of patients undergoing PMV is multifactorial. The use of the Echo-Sc in conjunction with other clinical and morphological predictors of PMV outcome allows identification of patients who will obtain the best outcome from PMV.
Asunto(s)
Cateterismo , Enfermedades de las Válvulas Cardíacas/mortalidad , Enfermedades de las Válvulas Cardíacas/cirugía , Válvula Mitral/cirugía , Cateterismo/efectos adversos , Supervivencia sin Enfermedad , Femenino , Estudios de Seguimiento , Enfermedades de las Válvulas Cardíacas/diagnóstico , Hemodinámica , Mortalidad Hospitalaria , Humanos , Hipertensión Pulmonar/etiología , Incidencia , Masculino , Persona de Mediana Edad , Válvula Mitral/diagnóstico por imagen , Insuficiencia de la Válvula Mitral/etiología , Selección de Paciente , Complicaciones Posoperatorias/etiología , Complicaciones Posoperatorias/mortalidad , Valor Predictivo de las Pruebas , Cuidados Preoperatorios , Modelos de Riesgos Proporcionales , Reoperación , Medición de Riesgo , Índice de Severidad de la Enfermedad , Tasa de Supervivencia , Tiempo , Resultado del Tratamiento , UltrasonografíaRESUMEN
A consecutive series of interventions in vessels with reference diameter < or = 2.75 mm was retrospectively analyzed according to preprocedure strategy: balloon angioplasty with provisional stenting (PTCA group, 73 patients) and primary stenting (PS group, 122 patients). In the PS group, there were more patients with single-vessel disease (54.1% vs. 37.0%; P = 0.021), less patients with three-vessel disease (9.0% vs. 24.7%; P = 0.003), more LAD interventions (54.9% vs. 31.5; P = 0.002), and less left circumflex interventions (22.1% vs. 45.2%; P < 0.001). Reference diameter was larger in the PS group (2.28 +/- 0.35 mm vs. 2.11 +/- 0.36 mm; P = 0.001). Provisional stenting was performed in 39.7% of PTCA group. At long-term outcome, the incidence of composite major events was similar between the PTCA and the PS groups (20.5% vs. 17.2%, respectively; P = NS). Treatment of small vessels with balloon dilatation and provisional stenting or with primary stenting yielded similar late outcomes. Operators' choice of treatment strategy was based on particular angiographic characteristics.