Population pharmacokinetics of domperidone in preterm neonates.

Abstract:

PURPOSE:A population pharmacokinetic analysis was performed to define domperidone pharmacokinetic parameters in preterm neonates, as no pharmacokinetic data are available in this population. METHODS:An oral domperidone solution was administered (0.75 mg/kg per day) in 32 preterm neonates (64 samples). Domperidone plasma concentration was measured by high-performance liquid chromatography (HPLC) assay, and a one-compartment model with first-order absorption was fitted to the data using NONMEM version V level 1.1. RESULTS:The mean peak and trough plasma concentration values of domperidone were, respectively, 25.3 +/- 20.5 ng/ml and 15.4 +/- 11.4 ng/ml (mean +/- standard deviation). The pharmacokinetic parameters (interindividual variability%) were clearance (Cl/F) = 0.92 L/h (51.6%), volume of distribution (Vd/F) = 0.405 L (68%), and absorption constant rate (Ka) = 0.0843 h(-1) (55.8%). The clearance is not lower than values reported in adults. No influence of covariates (postnatal age, prematurity, weight, gender) on domperidone pharmacokinetic parameters was found. CONCLUSION:This pilot study designed with a limited sampling strategy showed that domperidone plasma concentrations were consistent with those reported in adults, suggesting that domperidone dosage regimen currently used in preterm neonates is suitable.

journal_name

Eur J Clin Pharmacol

authors

Dailly E,Drouineau MH,Gournay V,Rozé JC,Jolliet P

doi

10.1007/s00228-008-0535-1

subject

Has Abstract

pub_date

2008-12-01 00:00:00

pages

1197-200

issue

12

eissn

0031-6970

issn

1432-1041

journal_volume

64

pub_type

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