• Kanako Abe, Hiromi Hamada, Takahiro Yamada, Mana Obata-Yasuoka, Hisanori Minakami, and Hiroyuki Yoshikawa.
• Department of Obstetrics and Gynecology, Faculty of Medicine, University of Tsukuba, Tsukuba, Japan. Electronic address: abekana@dia-net.ne.jp.
• Seizure. 2014 Feb 1; 23 (2): 112-6.

PurposeTo investigate whether planning of pregnancy in women with epilepsy affects seizure control during pregnancy and to compare the maternal and neonatal outcomes in planned and unplanned pregnancies.MethodsThis was a retrospective cohort study of 153 pregnant women with epilepsy who were treated at the University of Tsukuba Hospital and Hokkaido University Hospital between 2003 and 2011. Twenty-one pregnancies were excluded due to insufficient data. Data of patients followed by neurologists during their planned pregnancies (planned-pregnancy group, n=51) were compared to those of patients referred to neurologists after conception for managing epilepsy during pregnancy (unplanned-pregnancy group, n=81). The treatment profile for epilepsy, seizure control, and maternal and neonatal outcomes in both groups were compared using Chi-square test or Fisher's exact test and Mann-Whitney U test.ResultsCompared to the unplanned-pregnancy group, the planned-pregnancy group showed a significantly greater proportion of patients receiving monotherapy with antiepileptic drugs (80% vs. 61%: planned vs. unplanned, P=0.049) and those not requiring valproic acid (77% vs. 56%, P=0.031). Furthermore, the frequency of epileptic seizures (16% vs. 35%, P=0.018) and changes in antiepileptic drugs (24% vs. 41%, P=0.042) were significantly lower in the planned-pregnancy group than in the unplanned-pregnancy group. No significant intergroup differences were noted in the obstetric complications and neonatal outcomes, including congenital malformations.ConclusionFor women with epilepsy, planning of pregnancy is associated with good seizure control during pregnancy and less fetal exposure to antiepileptic drugs.Copyright © 2013 British Epilepsy Association. Published by Elsevier Ltd. All rights reserved.

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