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• W4385798798 abstract "Abstract Introduction Vancomycin dosing tailored for newborns is challenging due to the significant influence of maturation and organ function on pharmacokinetics. Population pharmacokinetic (popPK) models can be used to improve target attainment in neonates. Objectives The primary objective was to derive and evaluate a popPK model of intravenous vancomycin for neonates. Second, the predictive performance of this popPK model was compared with published popPK models. Methods This is a retrospective cohort study of neonates admitted to the neonatal intensive care unit receiving intravenous vancomycin. A popPK model was derived with 70% of the dataset using a nonlinear mixed effects modeling method. The predictive performance of the current popPK model was validated and compared with 22 published popPK models using the remaining 30% of the dataset. Monte Carlo simulations (MCS) were performed to derive optimal dosing regimens to treat neonatal sepsis caused by coagulase‐negative staphylococci (CoNS). Results Among 655 vancomycin courses from 448 neonates, 78% of vancomycin trough concentrations were outside target range (10–15 mg/L) for central nervous system infections and 43% were outside target range (5–12 mg/L) for other infections using the institution's vancomycin dosing. A one‐compartment model best described the observed data with a mean clearance of 0.11 ± 0.03 L/kg/h and volume of distribution (V) of 1.02 ± 0.08 L/kg. Body weight (WT), postmenstrual age (PMA), and serum creatinine (SCr) were significant covariates associated with clearance ( p < 0.001) and body WT was a significant covariate associated with V ( p = 0.009). Our study's popPK model has similar or better accuracy and precision than other published models. MCS‐derived vancomycin doses from the validated model achieved >90% target attainment for a steady state through target range of 10–15 mg/L in the majority of PMA and SCr categories (78%) to treat CoNS sepsis. Conclusion A vancomycin dosing guideline derived from a validated popPK model in neonates with CoNS sepsis is recommended to improve target attainment." @default.
• W4385798798 created "2023-08-15" @default.
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• W4385798798 date "2023-08-28" @default.
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• W4385798798 title "Using population pharmacokinetics to optimize initial vancomycin dosing guidelines for neonates to treat sepsis caused by coagulase‐negative staphylococcus" @default.
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• W4385798798 doi "https://doi.org/10.1002/phar.2865" @default.
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