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    Population Pharmacokinetics of Metoclopramide in Infants, Children, and Adolescents

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    Author
    Ge, S.
    Mendley, S.R.
    Best Pharmaceuticals for Children Act - Pediatric Trials Network Steering Committee
    Date
    2020
    Journal
    Clinical and Translational Science
    Publisher
    Blackwell Publishing Ltd
    Type
    Article
    
    Metadata
    Show full item record
    See at
    http://doi.org/10.1111/cts.12803
    Abstract
    Metoclopramide is commonly used for gastroesophageal reflux. The aims of the present study were to develop a pediatric population pharmacokinetic (PopPK) model, which was applied to simulate the metoclopramide exposure following dosing used in clinical practice. Opportunistic pharmacokinetic data were collected from pediatric patients receiving enteral or parenteral metoclopramide per standard of care and these data were simultaneously fitted using NONMEM. Allometric scaling with body weight was included a priori in the model. Using the final model, the steady-state maximum concentrations (Css,max) and the area under the metoclopramide plasma concentration-time curve at steady state from 0 to 6 hours (AUCss,0-6h) were simulated following 0.1 or 0.15 mg/kg orally every 6 hours in virtual patients, and compared with previously reported ranges associated with toxicity or the efficacy for gastroesophageal reflux in infants. A two-compartment model with first-order absorption best characterized 87 concentration measurements from 50 patients (median [range] postnatal age of 8.89 years [0.01-19.13]). There were 20 infants (≤ 2 years), 9 children (2 years to age ≤ 12 years), and 21 adolescents (> 12 years). Body weight was the only covariate included in the final model. For > 75% of virtual patients, simulated Css,max and AUCss,0-6h estimates were within the range associated with efficacy for gastroesophageal reflux in infants; however, slightly lower exposures were predicted in virtual patients < 2 years. Our study suggests that a metoclopramide enteral dose of 0.1 mg/kg every 6 hours, which was previously recommended for pediatric patients, results in simulated exposure generally within suggested ranges for the treatment of gastroesophageal reflux. Copyright 2020 The Authors.
    Sponsors
    his Pediatric Trials Network study was funded under National Institute of Child Health and Human Development (NICHD) con-tract HHSN275201000003I. D.G. receives salary support for research from the NICHD (K23HD083465 and R01HD096435). The content is solely the responsibility of the authors and does not necessarily repre-sent the official views of the National Institutes of Health
    Keyword
    population pharmacokinetics
    Children
    Youth
    Metoclopramide--pharmacokinetics
    Identifier to cite or link to this item
    https://www.scopus.com/inward/record.uri?eid=2-s2.0-85085489737&doi=10.1111%2fcts.12803&partnerID=40&md5=8d349df28452ef1cd2b6f677068887f0; http://hdl.handle.net/10713/13003
    ae974a485f413a2113503eed53cd6c53
    10.1111/cts.12803
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