Alosaimy S, Lagnf AM, Hobbs ALV, Mubarez M, Kufel WD, Morrisette T, Polisetty RS, Li D, Veve MP, Simon SP, Truong J, Finch N, Venugopalan V, Rico M, Amaya L, Yost C, Cubillos A, Chandler E, Patch M, Smith IMK, Biagi M, Wrin J, Moore WJ, Molina KC, Rebold N, Holger D, Kunz Coyne AJ, Jorgensen S, Witucki P, Tran NN, Davis SL, Sakoulas G, and Rybak MJ. Nephrotoxicity of Vancomycin in Combination with Beta-lactam Agents: Ceftolozane-tazobactam vs. Piperacillin-tazobactam. Clin Infect Dis 2022.
Clinical infectious diseases
BACKGROUND: Vancomycin (VAN)-associated acute kidney injury (AKI) is increased when VAN is combined with certain beta-lactam (BL) such as piperacillin-tazobactam (TZP) but not had been evaluated with ceftolozane-tazobactam (C/T). We aim to investigate the AKI incidence of VAN in combination with C/T (VAN/C/T) compared to VAN in combination to TZP (VAN-TZP).
METHOD: We conducted a multi-center observational comparative study across the United States. The primary analysis was a composite outcome of AKI: 1) RIFLE, 2) AKIN, or 3) VAN-induced-nephrotoxicity according to the consensus guidelines. Multivariable logistic regression analysis had been conducted to adjust for confounding variables and stratified Kaplan-Meir analysis to assess the time-to-nephrotoxicity between the two groups.
RESULTS: We included (n = 90) VAN/C/T and (n = 284) VAN-TZP at an enrollment ratio of 3:1. The primary outcome occurred in 12.2% vs. 25.0% in the VAN-C/T and VAN-TZP groups, respectively (P = 0.011). After adjusting for confounding variables, VAN-TZP was associated with increased odds of AKI compared with patients receiving VAN-C/T; with an aOR of 3.308 [1.560-6.993]. Results of the stratified Kaplan-Meir with log-rank time-to-nephrotoxicity analysis indicate that time to AKI was significantly shorter among patients receiving VAN-TZP (P = 0.004). Cox proportional hazards analysis demonstrated that TZP was consistent with the primary analysis (P = 0.001).
CONCLUSIONS: Collectively, our results suggest that the AKI is not likely to be related to tazobactam but rather to the piperacillin which is a component in the VAN-TZP combination but not the VAN-C/T.
ePub ahead of print