Population pharmacokinetics and dosage optimization of linezolid in Chinese older patients.
Eur J Clin Pharmacol
; 80(9): 1295-1304, 2024 Sep.
Article
en En
| MEDLINE
| ID: mdl-38801422
ABSTRACT
PURPOSE:
To assess the pharmacokinetics and pharmacodynamics of linezolid in a retrospective cohort of hospitalized Chinese older patients.METHODS:
Patients > 60 years of age, who received intravenous linezolid (600 mg), were included. A population pharmacokinetics (PPK) model was established using nonlinear mixed-effects modeling. The predictive performance of the final model was assessed using goodness-of-fit plots, bootstrap analyses, and visual predictive checks. Monte Carlo simulations were used to evaluate the achievement of a pharmacodynamics target for the area under the serum concentration-time curve/minimum inhibitory concentration (AUC0-24/MIC).RESULTS:
A total of 210 samples were collected from 120 patients. A one-compartment PPK model with linear elimination best predicted the linezolid plasma concentrations. Linezolid clearance (CL) was 4.22 L h-1 and volume of distribution (Vd) was 45.80 L; serum uric acid (SUA) was a significant covariate of CL.CONCLUSION:
The results of this study indicated that the standard dose was associated with a risk of overexposure in older patients, particularly those with high SUA values; these patients would benefit from a lower dose (300 mg every 12 h).Palabras clave
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Área Bajo la Curva
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Linezolid
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Antibacterianos
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Modelos Biológicos
Límite:
Aged
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Aged80
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Female
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Humans
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Male
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Middle aged
País como asunto:
Asia
Idioma:
En
Año:
2024
Tipo del documento:
Article