Experiencia con una asistencia ventricular pulsátil de larga duración como puente al trasplante cardiaco en adultos / Experience with a long-term pulsatile ventricular assist device as a bridge to heart transplant in adults

Introducción y objetivos: La mayoría de los dispositivos de asistencia ventricular (DAV) de larga duración utilizados actualmente son intracorpóreos y de flujo continuo. Sus principales inconvenientes son el coste elevado y la imposibilidad de ofrecer soporte biventricular. El objetivo de este estudio es describir los resultados de una estrategia de implante de un DAV paracorpóreo de flujo pulsátil como puente al trasplante (PAT) en pacientes adultos. Métodos: Análisis retrospectivo de las características, complicaciones y resultados de una serie unicéntrica de pacientes consecutivos tratados con el DAV EXCOR como PAT entre 2009 y 2015. Resultados: En este periodo se implantaron 25 DAV, 6 de ellos biventriculares. En 12 pacientes la indicación fue directamente PAT y en 13 puente a la decisión debido a la presencia de contraindicaciones potencialmente reversibles o posibilidad de recuperación. Veinte pacientes (80%) alcanzaron el objetivo del trasplante cardiaco tras una mediana de soporte de 112 días (rango 8-239). Las principales complicaciones fueron: infecciosas (52% de los pacientes), neurológicas (32%, la mitad de ellas mortales), hemorrágicas (28%) y fallo del DAV que obligó a cambiar algún componente de este (28%). Conclusiones: El 80% de los pacientes tratados con el DAV EXCOR como PAT alcanzaron el objetivo tras una mediana de soporte de casi 4 meses. Las complicaciones más frecuentes fueron las infecciosas y las más graves las neurológicas. El empleo de estos DAV de flujo pulsátil como PAT, en nuestro medio, es una estrategia factible que consigue resultados similares a los DAV de flujo continuo (AU)

Introduction and objectives: Most long-term ventricular assist devices (VADs) that are currently implanted are intracorporeal continuous-flow devices. Their main limitations include their high cost and inability to provide biventricular support. The aim of this study was to describe the results of using paracorporeal pulsatile-flow VADs as a bridge to transplant (BTT) in adult patients. Methods: Retrospective analysis of the characteristics, complications, and outcomes of a single-center case series of consecutive patients treated with the EXCOR VAD as BTT between 2009 and 2015. Results: During the study period, 25 VADs were implanted, 6 of them biventricular. Ventricular assist devices were indicated directly as a BTT in 12 patients and as a bridge to decision in 13 due to the presence of potentially reversible contraindications or chance of heart function recovery. Twenty patients (80%) were successfully bridged to heart transplant after a median of 112 days (range, 8-239). The main complications included infectious (52% of patients), neurological events (32%, half of them fatal), bleeding (28%), and VAD malfunction requiring component replacement (28%). Conclusions: Eighty percent of patients with the EXCOR VAD as BTT achieved the goal after an average of almost 4 months of support. The most frequent complications were infectious, and the most severe were neurological. In our enivonment, the use of these pulsatile-flow VAD as BTT is a feasible strategy that obtains similar outcomes to those of intracorporeal continuous-flow devices (AU)

Experience With a Long-term Pulsatile Ventricular Assist Device as a Bridge to Heart Transplant in Adults.

INTRODUCTION AND OBJECTIVES: Most long-term ventricular assist devices (VADs) that are currently implanted are intracorporeal continuous-flow devices. Their main limitations include their high cost and inability to provide biventricular support. The aim of this study was to describe the results of using paracorporeal pulsatile-flow VADs as a bridge to transplant (BTT) in adult patients. METHODS: Retrospective analysis of the characteristics, complications, and outcomes of a single-center case series of consecutive patients treated with the EXCOR VAD as BTT between 2009 and 2015. RESULTS: During the study period, 25 VADs were implanted, 6 of them biventricular. Ventricular assist devices were indicated directly as a BTT in 12 patients and as a bridge to decision in 13 due to the presence of potentially reversible contraindications or chance of heart function recovery. Twenty patients (80%) were successfully bridged to heart transplant after a median of 112 days (range, 8-239). The main complications included infectious (52% of patients), neurological events (32%, half of them fatal), bleeding (28%), and VAD malfunction requiring component replacement (28%). CONCLUSIONS: Eighty percent of patients with the EXCOR VAD as BTT achieved the goal after an average of almost 4 months of support. The most frequent complications were infectious, and the most severe were neurological. In our enivonment, the use of these pulsatile-flow VAD as BTT is a feasible strategy that obtains similar outcomes to those of intracorporeal continuous-flow devices.