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Alterations in Gentamicin Pharmacokinetics during Neonatal Exchange Transfusion

Alterations in Gentamicin Pharmacokinetics during Neonatal Exchange Transfusion The effect of double volume exchange transfusion on the pharmacokineticsof gentamicin was studied in 7 neonates undergoing eight transfusions. The procedureswere performed an average of 9.6 h following the previous dose of drug and required anaverage of 0.91 h to complete. Exchange transfusion decreased serum gentamicin concentrationsby 18.5 ± 4.2% and increased the elimination rate for gentamicin by 31.8%.Serum concentrations obtained an average of 3.3 h following the procedure showed arebound increase in concentration compared to that obtained just at the end of the transfusion(2 cases), no change (1 case) or a decrease compared with the immediate posttransfusionperiod (5 cases). The results observed in the late posttransfusion period were foundto be inversely related (r = -0.78) to the number of doses received by the patient prior tothe procedure. A one-compartment pharmacokinetic model was found to be adequate inpredicting the amount of drug removed by the procedure while a two-compartment modelbest described the posttransfusion alteration in elimination kinetics. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Developmental Pharmacology and Therapeutics Karger

Alterations in Gentamicin Pharmacokinetics during Neonatal Exchange Transfusion

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Publisher
Karger
Copyright
© 1982 S. Karger AG, Basel
ISSN
0379-8305
eISSN
2504-2505
DOI
10.1159/000457409
Publisher site
See Article on Publisher Site

Abstract

The effect of double volume exchange transfusion on the pharmacokineticsof gentamicin was studied in 7 neonates undergoing eight transfusions. The procedureswere performed an average of 9.6 h following the previous dose of drug and required anaverage of 0.91 h to complete. Exchange transfusion decreased serum gentamicin concentrationsby 18.5 ± 4.2% and increased the elimination rate for gentamicin by 31.8%.Serum concentrations obtained an average of 3.3 h following the procedure showed arebound increase in concentration compared to that obtained just at the end of the transfusion(2 cases), no change (1 case) or a decrease compared with the immediate posttransfusionperiod (5 cases). The results observed in the late posttransfusion period were foundto be inversely related (r = -0.78) to the number of doses received by the patient prior tothe procedure. A one-compartment pharmacokinetic model was found to be adequate inpredicting the amount of drug removed by the procedure while a two-compartment modelbest described the posttransfusion alteration in elimination kinetics.

Journal

Developmental Pharmacology and TherapeuticsKarger

Published: Jan 1, 2017

Keywords: Premature infants; Exchange transfusion; Gentamicin; Pharmacokinetics

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