Long Term Outcomes Following Double Lung Transplantation for Severe COVID-19 Infection

PURPOSE: : Lung transplantation is a potentially lifesaving treatment for severe COVID-19 acute respiratory distress syndrome (ARDS), when optimized medical treatment fails to accomplish lung recovery. However, since the long-term outcomes remain unknown, concerns related to the use of lung transplantation in critically ill COVID-19 patients persist. In the current study, we evaluated consecutive patients that underwent lung transplantation for severe COVID-19 ARDS at our center and compared their post-transplant outcomes with those undergoing transplantation for non-COVID-19 pathology during the concurrent study period. METHODS: All consecutive patients undergoing lung transplantation between January 2020 to May 2021 were included. The study included two cohorts of patients that underwent transplantation for non-COVID-19 disease (nC19) or refractory COVID-19 ARDS (C19). For additional analysis, we included consecutive patients with severe COVID-19 that required veno-venous extracorporeal membrane oxygenation (ECMO). RESULTS: We found that post-procedure complications and length of stay were significantly greater compared to transplants performed for non-COVID-19 lung diseases during the concurrent study period. Following transplant the COVID-19 cohort demonstrated a more rapid improvement in Karnofsky performance status. At one year, all recipients in COVID-19 cohort were alive with post-transplant survival no different than institutional non-COVID-19 recipients. Furthermore, when compared to propensity-matched recipients from SRTR, post-transplant survival of institutional COVID-19 ARDS patients was non-inferior. There was progressive reduction in the probability of separation from extracorporeal membrane oxygenation (ECMO) with time and ECMO support greater than 30 days was associated with a significantly greater risk of death in patients with COVID-19 ARDS. In those who remained unweanable from ECMO after 30 days, lung transplant was an independent predictor of survival. CONCLUSION: We conclude that lung transplantation in selected patients with severe COVID-19 ARDS who remain unweanable from extracorporeal life support can result in post-transplant outcomes comparable to recipients with chronic end-stage lung diseases and non-COVID-19 ARDS.