Comparative incidence and excess risk of acute kidney injury in hospitalised patients receiving vancomycin and piperacillin/tazobactam in combination or as monotherapy.
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Issue Date
2018-11
Authors
Carreno, Joseph J
Smiraglia, Tori A *
Hunter, Christopher *
Tobin, Ellis
Lomaestro, Ben
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Abstract
Combination therapy with vancomycin and piperacillin/tazobactam (TZP) has been associated with increased risk of acute kidney injury (AKI) compared with monotherapy with either agent. This retrospective, matched cohort study was conducted to assess the comparative incidence of AKI due to combination therapy in patients receiving vancomycin and TZP in combination or as monotherapy. Patients aged ≥18 years admitted to Albany Medical Center (Albany, NY) between September 2013 and August 2014 who had received therapy for at least two consecutive days were included. Patients who were pregnant, neutropenic, had AKI on admission or with cystic fibrosis were excluded. Patients were matched on baseline risk of AKI. The main outcome of interest was AKI, defined as an increase in serum creatinine of ≥0.3 mg/L or ≥50% within 48 h. Secondary outcomes evaluated were length of hospital and ICU stay and inpatient mortality associated with AKI. The risk of AKI was 7.0%, 8.5% and 26.8% in the vancomycin monotherapy, TZP monotherapy and combination groups, respectively (P < 0.001). In the multivariate analysis, combination therapy was independently associated with an increased odds of AKI (adjusted odds ratio = 4.406, 95% confidence interval 1.472-13.188) compared with vancomycin monotherapy. The excess risk of combination therapy was 11.3%. In this matched cohort study, there was an increased incidence of AKI in patients receiving vancomycin and TZP combination therapy. Further research is needed to determine the individual strategies to best prevent inpatient AKI in patients receiving this combination therapy.
Citation
Carreno J, Smiraglia T, Hunter C, Tobin E, Lomaestro B. Comparative incidence and excess risk of acute kidney injury in hospitalised patients receiving vancomycin and piperacillin/tazobactam in combination or as monotherapy. Int J Antimicrob Agents. 2018 Nov;52(5):643-650. doi: 10.1016/j.ijantimicag.2018.08.001. Epub 2018 Aug 10. PMID: 30103003.
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