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© 2006 American Academy of Neurology Brief Communications Oxcarbazepine concentrations during pregnancy: A retrospective study in patients with epilepsyFrom the Departments of Clinical Pharmacology (J.C.) and Neurology (J.C., P.S.), Aarhus University Hospital, Aarhus, Denmark; and Department of Neurology (A.S.), Glostrup University Hospital, Glostrup, Denmark. Address correspondence and reprint requests to Dr. Jakob Christensen, Department of Neurology, Aarhus University Hospital, Norrebrogade 44, DK-8000 Aarhus C, Denmark; e-mail: Jakob{at}farm.au.dk. We assessed the concentration of the oxcarbazepine metabolite 10-hydroxycarbazepine (MHD) in nine pregnancies among seven women before, during, and after pregnancy. The mean dose-corrected concentration of MHD was decreased during pregnancy (analysis of variance, p = 0.0016), being 72% (SD = 13%) in the first trimester, 74% (SD = 17%) in the second trimester, 64% (SD = 6%) in the third trimester, and 108% (SD = 18%) after pregnancy vs the dose-corrected concentration before pregnancy.
Disclosure: The authors report no conflicts of interest. Received February 24, 2006. Accepted in final form June 29, 2006.
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