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- W3048475861 abstract "Abstract Objectives To study the population pharmacokinetics of micafungin in critically ill patients, evaluate and optimize dosage regimens. Methods An HPLC–fluorescence bioassay for micafungin was developed, fully validated and applied to a pharmacokinetic study conducted in 14 ICU patients. Dense blood sampling was performed from days 1 to 7. A population pharmacokinetic model accounting for interindividual (IIV) and interoccasion variability (IOV) of the PK parameters was developed. Simulations were performed to estimate the probability of target attainment (PTA) for several dosing regimens. Key findings A two-compartment pharmacokinetic model best described the data, with population clearance CL = 1.31 L/h and central volume V1 = 14.2 L. The relatively high IOV observed (45% for CL, 27% for V1) sets limits for the dose individualization in this population. The low PTA on the first day of treatment suggests the need of a loading dose. PTA and CFR estimates show that the current micafungin dosage may be insufficient for the treatment of borderline susceptible Candida strains. Conclusions A loading dose of up to 300 mg of micafungin is needed for the treatment of invasive candidiasis in ICU patients while a maintenance dose of up to 200 mg can be considered in empirical antifungal treatment." @default.
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- W3048475861 date "2020-08-12" @default.
- W3048475861 modified "2023-09-23" @default.
- W3048475861 title "Population pharmacokinetics of micafungin over repeated doses in critically ill patients: a need for a loading dose?" @default.
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- W3048475861 doi "https://doi.org/10.1111/jphp.13353" @default.
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