Pharmacy Practice Faculty Publications

Title

Impact of Obesity on Fosphenytoin Volume of Distribution in Pediatric Patients.

Document Type

Article

Publication Date

7-1-2018

Journal Title

Journal of Child Neurology

ISSN

1708-8283

Volume

33

Issue

8

First Page

534

Last Page

536

DOI

10.1177/0883073818770801

PubMed ID

29714095

Abstract

The impact of body habitus on fosphenytoin pharmacokinetics is poorly understood in pediatric patients. This retrospective, single-center review examined differences in fosphenytoin volume of distribution (VD) between children with normal and obese body habitus. From 2013 to 2015, patients 2 to 18 years of age who received a loading dose of fosphenytoin were identified. Thirty-seven patients met inclusion criteria. Mean total serum phenytoin concentration was 25.3 ± 6.5 μg/mL in the nonobese group and 29.5 ± 7.6 μg/mL in the obese group ( P = .09). VD was not significantly different between obese and nonobese groups, 0.92 ± 0.26 L/kg and 0.97 ± 0.48 L/kg ( P = .76), respectively. In contrast to adult studies, these data suggest that fosphenytoin dose adjustments for obese children may be unnecessary.

Keywords

Antiepileptic drugs, children, pediatric, status epilepticus, treatment

Share

COinS