Villavicencio, Mauricio

Background Transplantation using hearts obtained through donation after circulatory death (DCD) is increasing, but data on recipient renal outcomes are limited. Methods and Results Patients at a single institution who underwent heart transplantation using organs procured through DCD or donation after brain death (DBD) from April 2016 to August 2022 were included in this retrospective cohort study. Hemodynamic measures were collected via right heart catheterization performed 1 week after transplantation. Posttransplantation renal outcomes included estimated glomerular filtration rate at 1 week, 4 weeks, and 16 weeks, and the incidence of acute kidney injury (AKI) and renal replacement therapy within 1 week. The analysis included 225 patients (55 recipients of DCD). Baseline characteristics were comparable between recipients of DCD and DBD. Renal outcomes within 1 week posttransplantation in recipients of DCD were similar to recipients of DBD, including percent change in estimated glomerular filtration rate (−37.9% [−58.6 to −6.2] versus −31.9% [−52.4 to −9.9]; P =0.91), incidence of AKI (47.3% versus 46.5%; P >0.99) and incidence of renal replacement therapy (3.6% versus 4.7%; P >0.99). Recipients of DCD with AKI within 1 week (“early AKI”) did not recover to baseline estimated glomerular filtration rate (75.8 [60.2–91.3] mL/min per 1.73 m 2 ) by week 16 (59.3 [46.9–73.6] mL/min per 1.73 m 2 ; P =0.002), whereas recipients without early AKI exhibited comparable estimated glomerular filtration rate to baseline by week 4 (84.5 [70.8–98.5] mL/min per 1.73 m 2 ; P =0.084). Similar trends were observed in recipients of DBD. Conclusions Recipients of DCD demonstrated similar renal outcomes compared with recipients of DBD, supporting the ongoing use of DCD transplantation. Early AKI was associated with persistent renal dysfunction for recipients of both DCD and DBD.

ABSTRACTIntroductionLung transplantation has become increasingly utilized in patients with COVID‐19. While several single‐center and UNOS database studies have been published on lung transplants (LTs) for end‐stage lung disease (ESLD) from Coronavirus disease 2019 (COVID‐19), there is a lack of multi‐center and international data.MethodsThis is a multicenter analysis from 11 high‐volume lung transplant centers in the United States and Europe. Data were collected through the Multi‐Institutional ECLS Registry and stratified by ESLD due to COVID‐19 versus other etiologies. Demographics and clinical variables were compared using Chi‐square test and Fisher's exact test. Survival was assessed by Kaplan‐Meier curves and compared by log‐rank test with propensity score matching.ResultsOf 1606 lung transplant recipients, 46 (2.9%) were transplanted for ESLD from COVID‐19 compared to 1560 (97.1%) without a history of COVID‐19. Among COVID‐19 patients, 30 (65.2%) had COVID‐19‐associated ARDS and 16 (34.8%) had post‐COVID‐19 fibrosis. COVID‐19 patients had higher lung allocation scores (78.0 vs. 44.4, p < 0.0001), had severely limited functional status (37.0% vs. 2.9%, p < 0.0001), had higher preoperative ECMO usage (65.2% vs. 5.4%, p < 0.0001), and spent less time on the waitlist (32 vs. 137 days, p < 0.0001). A 30‐day survival was comparable between COVID‐19 and non‐COVID‐19 patients before (100% vs. 98.7%, p = 0.39) and after propensity matching (p = 0.15).ConclusionsPatients who received LTs due to COVID‐19 had short‐term survival comparable to that of patients without COVID‐19. Our findings support the idea that lung transplantation should be considered for select patients with ESLD due to COVID‐19.