Initiation of continuous renal replacement therapy versus intermittent hemodialysis in critically ill patients with severe acute kidney injury: a secondary analysis of STARRT-AKI trial
Wald R., Gaudry S., da Costa BR., Adhikari NKJ., Bellomo R., Du B., Gallagher MP., Hoste EA., Lamontagne F., Joannidis M., Liu KD., McAuley DF., McGuinness SP., Nichol AD., Ostermann M., Palevsky PM., Qiu H., Pettilä V., Schneider AG., Smith OM., Vaara ST., Weir M., Dreyfuss D., Bagshaw SM., Bagshaw SM., Wald R., Adhikari NKJ., Bellomo R., Dreyfuss D., Du B., Gallagher MP., Gaudry S., Hoste EA., Lamontagne F., Joannidis M., Liu KD., McAuley DF., McGuinness SP., Nichol AD., Ostermann M., Palevsky PM., Qiu H., Pettilä V., Schneider AG., Smith OM., Vaara ST., Weir M., Bellomo R., Eastwood GM., Peck L., Young H., Kruger P., Laurie G., Saylor E., Meyer J., Venz E., Wetzig K., French C., McGain F., Mulder J., Fennessy G., Koottayi S., Bates S., Towns M., Morgan R., Tippett A., Udy A., Mason C., Licari E., Gantner D., McClure J., Nichol A., McCracken P., Board J., Martin E., Vallance S., Young M., Vladic C., McGloughlin S., Gattas D., Buhr H., Coles J., Hutch D., Wun J., Cole L., Whitehead C., Lowrey J., Masters K., Gresham R., Campbell V., Gutierrez D., Brailsford J., Forbes L., Murray L., Maguire T., NiChonghaile M., Orford N., Bone A., Elderkin T., Salerno T.
Background: There is controversy regarding the optimal renal-replacement therapy (RRT) modality for critically ill patients with acute kidney injury (AKI). Methods: We conducted a secondary analysis of the STandard versus Accelerated Renal Replacement Therapy in Acute Kidney Injury (STARRT-AKI) trial to compare outcomes among patients who initiated RRT with either continuous renal replacement therapy (CRRT) or intermittent hemodialysis (IHD). We generated a propensity score for the likelihood of receiving CRRT and used inverse probability of treatment with overlap-weighting to address baseline inter-group differences. The primary outcome was a composite of death or RRT dependence at 90-days after randomization. Results: We identified 1590 trial participants who initially received CRRT and 606 who initially received IHD. The composite outcome of death or RRT dependence at 90-days occurred in 823 (51.8%) patients who commenced CRRT and 329 (54.3%) patients who commenced IHD (unadjusted odds ratio (OR) 0.90; 95% confidence interval (CI) 0.75–1.09). After balancing baseline characteristics with overlap weighting, initial receipt of CRRT was associated with a lower risk of death or RRT dependence at 90-days compared with initial receipt of IHD (OR 0.81; 95% CI 0.66–0.99). This association was predominantly driven by a lower risk of RRT dependence at 90-days (OR 0.61; 95% CI 0.39–0.94). Conclusions: In critically ill patients with severe AKI, initiation of CRRT, as compared to IHD, was associated with a significant reduction in the composite outcome of death or RRT dependence at 90-days.