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  • Title: Acute kidney injury during vancomycin therapy in critically ill children.
    Author: Totapally BR, Machado J, Lee H, Paredes A, Raszynski A.
    Journal: Pharmacotherapy; 2013 Jun; 33(6):598-602. PubMed ID: 23526674.
    Abstract:
    STUDY OBJECTIVE: To determine the rate, risk factors, and outcome of vancomycin-associated acute kidney injury (AKI) in critically ill children. DESIGN: Retrospective cohort study. SETTING: Tertiary care children's hospital. PATIENTS: We reviewed the charts of children admitted to the pediatric intensive care unit during a 2-year period who were treated with vancomycin. Courses of vancomycin interrupted by 3 days or more were counted separately. Patients were excluded if they received vancomycin treatment for fewer than 3 days, had preexisting renal failure, or had incomplete serum creatinine (Scr ) data. MEASUREMENTS AND MAIN RESULTS: Demographic and laboratory data; vancomycin dose, duration, and concentrations; and concurrent use of nephrotoxic drugs were recorded. Acute kidney injury was defined as a decrease in estimated glomerular filtration rate of 50% or more from the beginning of vancomycin therapy. Descriptive statistics, step-wise logistic regression, and repeated measures ANOVA were used to analyze the data. A total of 284 patients were included, for a total of 391 courses of vancomycin (272 children and 119 infants). The mean duration of vancomycin therapy was 6.9 ± 4.5 days. Forty nine (17.2%) patients developed AKI during 61 (15.6%) courses. Elevated Scr concentrations returned to baseline after stopping vancomycin in 53 (87%) courses. Mortality was higher in children who developed AKI (p<0.001; Fisher's exact test). Administration of nephrotoxic drugs (odds ratio 2.23, Confidence Interval 1.27-3.93) and presence of high blood urea nitrogen (BUN):Scr ratio before vancomycin therapy (p<0.05) were associated with AKI. The BUN and Scr concentrations significantly increased during vancomycin therapy and decreased after vancomycin was discontinued (p<0.05). CONCLUSIONS: In critically ill children, the development of reversible AKI during vancomycin therapy is associated with administration of nephrotoxic drugs and an elevated BUN: Scr ratio.
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