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      A Population Pharmacokinetic Analysis to Study the Effect of Extracorporeal Membrane Oxygenation on Cefepime Disposition in Children

      research-article
      , MD MSCE 1 , 2 , , PharmD, PhD 1 , , PhD 1 , 2 , , MD, MCCM 3 , 4 , , Ph.D 5 , , MD 4 , , MD 6 , , MD 7 , , MD 2 , , MD 8 , , MD 9 , , MD 10 , , MD 5 , , PhD 11 , Eunice Kennedy Shriver National Institute of Child Health and Human Development Collaborative Pediatric Critical Care Research Network (CPCCRN)
      Pediatric critical care medicine : a journal of the Society of Critical Care Medicine and the World Federation of Pediatric Intensive and Critical Care Societies
      ECMO, pediatrics, population pharmacokinetics, cefepime

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          Abstract

          Objective:

          Limited data exist on the effects of extracorporeal membrane oxygenation (ECMO) on pharmacokinetics of cefepime in critically ill pediatric patients. The objective was to describe cefepime disposition in children treated with ECMO using population pharmacokinetic modeling.

          Design:

          Multi-center, prospective observational study

          Setting:

          The pediatric and cardiac intensive care units of six sites of the Collaborative Pediatric Critical Care Research Network.

          Patients:

          Seventeen critically ill children (30 days to < 2 years old) on ECMO who received cefepime as standard of care between Jan 4, 2014 and August 24, 2015 were enrolled.

          Interventions:

          None.

          Measurements/Results:

          A pharmacokinetic model was developed to evaluate cefepime disposition differences due to ECMO. A two-compartment model with linear elimination, weight effects on clearance (CL), inter-compartmental clearance (Q), central volume of distribution (V1), and peripheral volume of distribution (V2) adequately described the data. The typical value of clearance in this study was 7.1 mL/min (1.9 mL/min/kg 0.75) for a patient weighing 5.8kg. This value decreased by approximately 40% with the addition of renal replacement therapy. The typical value for V1 was 1170 mL. In the setting of blood transfusions, V1 increased by over 2-fold, but was reduced with increasing age of the ECMO circuit oxygenator.

          Conclusion:

          Cefepime clearance was reduced in pediatric patients treated with ECMO compared to previously reported values in children not receiving ECMO. The model demonstrated that the age of the ECMO circuit oxygenator is inversely correlated to V1. For free cefepime, only 14 of the 19 doses (74%) demonstrated a fT_MIC of 16 mg/L, an appropriate target for the treatment of pseudomonal infections, for greater than 70% of the dosing interval. Pediatric patients on ECMO might benefit from the addition of therapeutic drug monitoring of cefepime to assure appropriate dosing.

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          Author and article information

          Journal
          100954653
          30237
          Pediatr Crit Care Med
          Pediatr Crit Care Med
          Pediatric critical care medicine : a journal of the Society of Critical Care Medicine and the World Federation of Pediatric Intensive and Critical Care Societies
          1529-7535
          15 October 2018
          January 2019
          01 January 2020
          : 20
          : 1
          : 62-70
          Affiliations
          [1 ]Center for Clinical Pharmacology, The Children’s Hospital of Philadelphia, Philadelphia, PA.
          [2 ]Department of Anesthesiology and Critical Care Medicine, The Children’s Hospital of Philadelphia, Philadelphia, PA.
          [3 ]Adult and Pediatric ECLS, INOVA Fairfax Hospital
          [4 ]Department of Critical Care Medicine, Children’s Hospital of Pittsburgh, University of Pittsburgh, Pittsburgh, PA, USA
          [5 ]Department of Pediatrics, University of Utah, Salt Lake City, Utah
          [6 ]Department of Pediatrics, Nationwide Children’s Hospital, The Ohio State University, Columbus, OH
          [7 ]Department of Pediatrics, Children’s Hospital of Michigan, Wayne State University, Detroit, MI
          [8 ]Division of Critical Care UCLA Mattel Children’s Hospital
          [9 ]Section of Critical Care, Department of Pediatrics, University of Colorado School of Medicine and Children’s Hospital Colorado, Aurora, Colorado, United States of America
          [10 ]Department of Molecular Biology, Princeton University, Princeton, New Jersey
          [11 ]Metrum Research Group, Tariffville, CT.
          Author notes
          Corresponding Author Address requests for reprints to: Athena F. Zuppa MD MSCE, Center for Clinical Pharmacology, The Children’s Hospital of Philadelphia, 3500 Civic Center Blvd, Philadelphia, PA 19104. zuppa@ 123456email.chop.edu
          Article
          PMC6323642 PMC6323642 6323642 nihpa1509640
          10.1097/PCC.0000000000001786
          6323642
          30431557
          607636d7-fe22-4c7e-acfd-84f70c2e16c5
          History
          Categories
          Article

          pediatrics,cefepime,population pharmacokinetics,ECMO
          pediatrics, cefepime, population pharmacokinetics, ECMO

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