Single-lung transplantation with ABO-compatible donors results in excellent outcomes

The goal of this study was to determine if carefully selected ABO-compatible donors in single-lung transplantation results in acceptable outcomes.

The United Network for Organ Sharing database was reviewed for adult single-lung transplant recipients from May 2005 to December 2011. Recipients of lungs from ABO-compatible donors were compared with those of ABO-identical donors. Mortality was examined with risk-adjusted multivariable Cox proportional hazards regression using significant univariate predictors.

Of 3,572 single-lung transplants, 342 (9.6%) were from ABO-compatible donors. The two groups were evenly matched in recipient age (60.8 vs 60.2 years, p = 0.28), male gender (61.8% vs 58.2%, p = 0.10), lung allocation score (43.4 vs 42.6, p = 0.32), forced expiratory volume in 1 second (FEV1; 41.2% vs 40.8%, p = 0.32), and ischemic time (4.2 vs 4.0 hours, p = 0.09), and donor age (34.4 vs 32.9, p = 0.07) and male gender (61.5 vs 65.5, p = 0.14). ABO-compatible donors were less likely to be race mismatched (58.3% vs 50.9%, p = 0.01). Median survival was not different (1,284.0 vs 1,540 days, p = 0.39). On multivariate analysis, lungs from ABO-compatible donors were not associated with mortality (hazard ratio, 1.02; 95% confidence interval, 0.85-1.22; p = 0.86). Prolonged ischemic time, increasing recipient creatinine, increasing recipient age, race mismatch, class I plasma reactive antigen panel > 10%, and the use of mechanical ventilation or extracorporeal membrane oxygenation were associated with mortality. Peak post-transplant FEV1 (64.5% vs 64.0%, p = 0.69) and decrement in FEV1 over time were similar (p = 0.82).

This large multi-institutional analysis of ABO-compatible donors in single-lung transplantation demonstrates that careful selection of ABO-compatible donors results in excellent outcomes.