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Resumen Introduccion y objetivos La reparacion de la valvula mitral transcateter (RVMT) con el sistema MitraClip es un tratamiento para los pacientes con insuficiencia mitral (IM) grave de alto riesgo quirurgico. El objetivo principal fue analizar los resultados del RVMT en pacientes con IM grave, segun la etiologia. Metodos Estudio observacional, prospectivo y multicentrico con inclusion de pacientes consecutivos. El objetivo primario fue el combinado de mortalidad por todas las causas y reingresos hospitalarios por insuficiencia cardiaca al ano. Se compararon las caracteristicas clinicas y del procedimiento y los eventos para cada grupo de IM. Se realizo un analisis multivariable para determinar las variables asociadas con el objetivo primario. Resultados Se incluyo a 558 pacientes; 364 (65,2%) tenian etiologia funcional; 111 (19,9%), degenerativa, y 83 (14,9%), mixta. La media de edad fue 72,8 ± 11,1 anos y eran varones el 70,3%. Respecto al objetivo primario, hubo 95 (17%) eventos en toda la serie. No hubo diferencias significativas entre los 3 grupos en el numero de eventos del objetivo primario: 11 (11,3%) en la IM degenerativa, 71 (21,3%) en la funcional y 13 (18,1%) en la mixta (p = 0,101). Los predictores independientes fueron la clase funcional (p = 0,029), la revascularizacion quirurgica previa (p = 0,031), el EuroSCORE II (p = 0,003), la diabetes mellitus (p = 0,037) y la fraccion de eyeccion del ventriculo izquierdo (p = 0,015). Conclusiones Este trabajo confirma con datos de la practica clinica la seguridad y la eficacia de la RVMT independientemente de la etiologia de la IM y se documentan los principales factores asociados con el pronostico durante el primer ano de seguimiento.

Background: Transcatheter mitral valve repair (TMVR) could improve survival in functional mitral regurgitation (FMR), but it is necessary to consider the influence of left ventricular ejection fraction (LVEF). Therefore, we compare the outcomes after TMVR with Mitraclip&reg, between two groups according to LVEF. Methods: In an observational registry study, we compared the outcomes in patients with FMR who underwent TMVR with and without LVEF &lt, 30%. The primary endpoint was the combined one-year all-cause mortality and unplanned hospital readmissions due to HF. The secondary end-points were New York Heart Association (NYHA) functional class and mitral regurgitation (MR) severity. Propensity-score matching was used to create two groups with the same baseline characteristics, except for baseline LVEF. Results: Among 535 FMR eligible patients, 144 patients with LVEF &lt, 30% (group 1) and 144 with LVEF &gt, 30% (group 2) had similar propensity scores and were included in the analyses. The primary study endpoint was significantlly higher in group 1 (33.3% vs. 9.4%, p = 0.002). There was a maintained improvement in secondary endpoints without significant differences among groups. Conclusion: FMR patients with LVEF &lt, 30% treated with MitraClip&reg, had higher mortality and readmissions than patients with LVEF &ge, 30% treated with the same device. However, both groups improved the NYHA functional class and MR severity.

Introduction and objectives: Transcatheter mitral valve repair (TMVR) with MitraClip is a therapeutic option for high surgical risk patients with severe mitral regurgitation (MR). The main objective of this study was to analyze differences in outcomes in patients with severe MR according to the cause of MR. Methods: Observational, multicenter, and prospective study with consecutive patient inclusion. The primary endpoint was the combination of all-cause mortality and new readmissions due to heart failure after 1 year. We compared clinical and procedural characteristics and the event rate for each MR group. We performed a multivariate analysis to identify predictive variables for the primary endpoint. Results: A total of 558 patients were included: 364 (65.2%) with functional etiology, 111 (19.9%) degenerative and 83 (14.9%) mixed. The mean age was 72.8 +/- 11.1 years and 70.3% of the sample were men. There were 95 (17%) events in the overall sample. No significant differences were found in the 3 groups in the number of primary outcome events: 11 (11.3%) in degenerative MR, 71 (21.3%) in functional MR, and 13 (18.1%) in mixed MR (P=.101). Independent predictors were functional class (P=.029), previous surgical revascularization (P=.031), EuroSCORE II (P=.003), diabetes mellitus (P=.037), and left ventricular ejection fraction (P=.015). Conclusions: This study confirms the safety and efficacy of TMVR with MitraClip irrespective of MR etiology in real-life data and shows the main factors related to prognosis during the first year of follow up. (C) 2019 Sociedad Espanola de Cardiologia. Published by Elsevier Espana, S.L.U. All rights reserved.