Early and Long-Term Outcomes after Direct Bridge-to-Transplantation with Extracorporeal Membrane Oxygenation
DOI:
https://doi.org/10.1532/hsf.3861Keywords:
Bridge-to-transplantation, Heart transplantation, Veno-arterial extracorporeal membrane oxygenation, Outcomes, SurvivalAbstract
Background: Veno-arterial extracorporeal membrane oxygenation (VA-ECMO) as direct bridge-to-transplantation (dBTT) remains controversial. We compared the short- and long-term outcomes of adult patients undergoing urgent heart transplantation (HT) with (dBTT) and without (non-BTT) VA-ECMO support at the time of HT.
Methods: Adults who underwent urgent HT in two institutions were assessed (N = 133; dBTT: N = 34 and non-BTT: N = 99). Patient characteristics, donor characteristics, in-hospital outcomes, and overall survival were compared. Mean follow up was 77±38 months and was 100% complete. Mortality predictors were identified using univariate and multivariate analyses.
Results: Before HT, patients with dBTT had higher rates of ischemic cardiomyopathy, acute kidney injury, liver failure, respiratory failure, and longer graft ischemia times. More patients in the dBTT group had complications, such as requiring VA-ECMO postoperatively (dBTT=50% vs. non-BTT=20%, P < 0.01). Hospital deaths (dBTT=23% vs. non-BTT=19%, P = 0.58), one-year (74% vs. 80%) and five-year survival (62% vs. 75%, P = 0.74 for overall survival) were not significantly different. The MELD-XI score and previous cardiac surgery were independent predictors of hospital mortality.
Conclusion: Direct bridge-to-transplantation in patients on VA-ECMO support was not associated with worse long-term outcomes compared with non-VA-ECMO urgent HT, especially in recipients without any associated organ failure and a low MELD-XI score before HT.
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