Risk of malformations in children of women with epilepsy - 5 years data from prospective, control study.

Objective: Risk of malformations in children of women with epilepsy -- 5 years data from prospective, control study. Methods: All pregnant women, including women during preconception, who attended our hospital during years 2002-2007 were screened for women with history of epilepsy (WWE) and were enrolled for prospective study after obtaining due consent. Pregnant women, including women during preconception, who had neither history of epilepsy nor taking any anti epileptic drug (AED), but matched for age, parity and period of gestation were enrolled as control group. All women were given 5 mg of folic acid daily after enrolment, if not taking already, Women were followed up every trimester till delivery and children were followed up to early neonatal period. Details of malformations were noted in both groups. Results: 2.75, 598 pregnant women, attending our hospital, were screened during years 2002-2007 for history of epilepsy or intake of AED. There were 530 pregnant women with epilepsy (0.2%) and 8 other women were taking AED for reasons other than epilepsy. 8 WWE were excluded from study because of severe co morbid conditions or induced abortion for personal reasons other than fetal status. 522 WWE and 474 controls were recruited in the study. Outcome was known in 424 WWE and 387 controls. There were 395 live births (93.5%) in WWE and 378 (97.7%) in control group. Congenital malformations were seen in 13 children of WWE (3.0%) and in 7 children of control group (1.8%) and the difference was not statistically significant (P value 0.249). There is no significant difference in the type of malformations between the groups. AED intake as mono therapy or no AED intake during pregnancy in WWE showed no significant difference in the risk of malformations in children of WWE (Odds ratio 1.20 and 95% C.I. 0.91-1.57). But, intake of AED as poly therapy increased the risk of malformations (10.4% Odds ratio 4.87 95% C.I. 1.36-17.41). Use of carbamazapine was not associated with any malformation in the present study. Conclusions: More than 90% women with epilepsy delivered normal children. Risk of malformations did not show any significant increase over controls. AED monotherapy did not increase risk of malformations. Long duration of epilepsy and Polytherapy with multiple AED significantly increased risk of malformations in WWE. Use of Carbamazepine did not result in any malformation in the present study. [ABSTRACT FROM AUTHOR]