Biomedicines (Sep 2024)

Comparative Temporal Analysis of Morbidity and Early Mortality in Heart Transplantation with Extracorporeal Membrane Oxygenation Support: Exploring Trends over Time

  • Raquel López-Vilella,
  • Manuel Pérez Guillén,
  • Borja Guerrero Cervera,
  • Ricardo Gimeno Costa,
  • Iratxe Zarragoikoetxea Jauregui,
  • Francisca Pérez Esteban,
  • Paula Carmona,
  • Tomás Heredia Cambra,
  • Mónica Talavera Peregrina,
  • Azucena Pajares Moncho,
  • Carlos Domínguez-Massa,
  • Víctor Donoso Trenado,
  • Luis Martínez Dolz,
  • Pilar Argente,
  • Álvaro Castellanos,
  • Juan Martínez León,
  • Salvador Torregrosa Puerta,
  • Luis Almenar Bonet

DOI
https://doi.org/10.3390/biomedicines12092109
Journal volume & issue
Vol. 12, no. 9
p. 2109

Abstract

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Background/Objectives: The direct bridge to urgent heart transplant (HT) with venoarterial extracorporeal membrane oxygenation (VA-ECMO) support has been associated with high morbidity and mortality. The objective of this study is to analyze the morbidity and mortality of patients transplanted with VA-ECMO and compare the presumed differences between various eras over a 17-year timeline. Methods: This is a prospective, observational study on consecutive patients stabilized with VA-ECMO and transplanted with VA-ECMO from July 2007 to December 2023 at a reference center (98 patients). Objective variables were mortality and morbidity from renal failure, venous thromboembolic disease (VTD), primary graft dysfunction (PGD), the need for tracheostomy, severe myopathy, reoperation, post-transplant ECMO, vascular complications, and sepsis/infection. Results: The percentage of patients who reached transplantation without the need for mechanical ventilation has increased over the periods studied. No significant differences were found between the study periods in 30-day mortality (p = 0.822), hospital discharge (p = 0.972), one-year mortality (p = 0.706), or five-year mortality (p = 0.797). Survival rates in these periods were 84%, 75%, 64%, and 61%, respectively. Comorbidities were very frequent, with an average of 3.33 comorbidities per patient. The most frequent were vascular complications (58%), the need for post-transplant ECMO (57%), and myopathy (55%). The development of myopathy and the need for post-transplant ECMO were higher in recent periods (p = 0.004 and p = 0.0001, respectively). Conclusions: VA-ECMO support as a bridge to HT allows hospital discharge for 3 out of 4 transplanted patients. This survival rate has not changed over the years. The comorbidities associated with this device are frequent and significant.

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