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• W4200077384 abstract "Background: Vancomycin requires therapeutic drug monitoring (TDM) based on its pharmacokinetic properties, and guidelines have shifted to analyzing area under the curve over 24 hours (AUC24) rather than trough concentrations due to nephrotoxicity concerns and correlation to efficacy. Obesity is an established risk factor for vancomycin-induced nephrotoxicity due to increased drug exposure based on dosing calculations and volume of distribution estimation. The aim of this study is to assess the relationship between AUC-based versus trough-based dosing and nephrotoxicity among obese patients receiving vancomycin. Methods: This research project was conducted as a retrospective, observational, single-centered study which included obese adults who received at least 48 hours of vancomycin. The electronic medical record provided data for patients with vancomycin pharmacokinetic consults either evaluated with trough-only or AUC-based dosing. The primary objective was to compare the development of nephrotoxicity after vancomycin initiation, while secondary objectives included vancomycin loading dose exposure, total daily dose of vancomycin, and whether target TDM was attained. Nominal data were evaluated utilizing the chi-square test and continuous data using the independent samples t-test or Mann-Whitney test. The a priori level of significance was .05. Data analysis was performed using Microsoft Excel and SAS statistical software. Results: Two hundred fifty-four patients were included in the primary analysis. Four patients in the AUC cohort (6.3%) developed nephrotoxicity compared to 32 (17.4%) in the trough cohort (P = .035). Both cohorts received a median of 4 days of therapy; however, the median loading dose per actual body weight in the AUC cohort was 20 mg/kg as compared to 16 mg/kg in the trough cohort. Of the 130 patients with available TDM in the trough cohort, 97 (74.6%) did not meet target attainment as compared to 15 of the 57 in the AUC cohort (26.3%) (P < .001). Conclusions: AUC dosing was associated with a statistically significant reduction in AKI occurrence despite overall higher loading dose exposure as compared to the trough cohort. Though maintenance dose exposure was similar between both cohorts, patients in the AUC cohort maintained therapeutic concentrations at a higher percentage than the trough cohort." @default.
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• W4200077384 date "2021-12-14" @default.
• W4200077384 modified "2023-09-25" @default.
• W4200077384 title "Assessing Nephrotoxicity Associated With Different Vancomycin Dosing Modalities in Obese Patients at a Community Hospital" @default.
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• W4200077384 doi "https://doi.org/10.1177/00185787211055791" @default.
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