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- W2945477705 abstract "The main goal of our study was to characterize the population pharmacokinetics of vancomycin in critically ill Chinese neonates to develop a pharmacokinetic model and investigate factors that have significant influences on the pharmacokinetics of vancomycin in this population. 1 2 The study population consisted of 80neonates in the neonatal intensive care unit (ICU)from which 165 trough and peak concentrations of vancomycin were obtained.Nonlinear mixed effect modeling was used to develop a population pharmacokinetic model for vancomycin. 4 The stability and predictive ability of the final model were evaluated based on diagnostic plots, normalized prediction distribution errorsandthe bootstrap method.Serum creatinine (Scr) and body weight were significant covariates on the clearance of vancomycin. 5 6 The average clearance was 0.309L/h for a neonate with Scr of 23.3mmol/L and body weight of 2.9 kg. No obvious ethnic differences in the clearance of vancomycin were found relative to the earlier studies of Caucasian neonates. Moreover, the established model indicated that in patients with a greater renal clearance status, especially Scr < 15mmol/L,current guideline recommendationswould likely not achieve therapeuticarea under the concentration-time curve over24 h/minimum inhibitoryconcentration (AUC 24h /MIC) ≥ 400. 3 The exceptions to this areBritish National Formulary (2016–2017), Blue Book (2016) and Neofax (2017). Recommended dose regimensfor neonates with differentScrlevelsandpostmenstrual ageswere estimatedbased on Monte Carlo simulations andthe established model.These findings will be valuable for developing individualized dosage regimens in the neonatal ICU setting. References Abdel HO, Al OS, Nazer LH., Mubarak S, Le, J. Vancomycin pharmacokinetics and predicted dosage requirements in pediatric cancer patients. Journal of Oncology Pharmacy Practice 2015;22(3):448–453doi: 10.1177/1078155215591386 Anderson, B. J., Allegaert, K., Jn, V. D. A., Cossey, V., &Holford, N. H. ( 2007). Vancomycin pharmacokinetics in preterm neonates and the prediction of adult clearance. British Journal of Clinical Pharmacolog ;63(1):75–84. doi: 10.1111/j.1365-2125.2006.02725.x Allegaert K, Anderson BJ, Jn, VDA, Vanhaesebrouck, S., & De, Z. F. ( 2007). Renal drug clearance in preterm neonates: relation to prenatal growth. Therapeutic Drug Monitoring , 29(3), 284–291. doi: 10.1097/FTD.0b013e31806db3f5 Byon, W., Smith, M. K., Chan, P., Tortorici, M. A., Riley, S., & Dai, H., et al. ( 2013). Establishing best practices and guidance in population modeling: an experience with an internal population pharmacokinetic analysis guidance. CptPharmacometrics & Systems Pharmacology,2(7), e51. doi: 10.1016/j.cmpb.2010.04.018 Capparelli, E. V., Lane, F. R., Romanowski, G. L., Pharm, M. F., Murray, W., & Sousa, P., et al. ( 2001). The influences of renal function and maturation on vancomycin elimination in newborns and infants. Journal of Clinical Pharmacology , 41(9), 927–934. Centers for Disease Control and Prevention. ( 2009). WHO Child Growth Standards. http://www.who.int/childgrowth/en. [EB/OL] 2017-09-12 Disclosure(s) Nothing to disclose" @default.
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- W2945477705 date "2019-05-17" @default.
- W2945477705 modified "2023-10-14" @default.
- W2945477705 title "P61 Population pharmacokinetics of vancomycin in chinese ICU neonates: initial dosage recommendations" @default.
- W2945477705 doi "https://doi.org/10.1136/archdischild-2019-esdppp.99" @default.
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