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Cohort study
Prenatal exposure to sodium valproate is associated with increased risk of childhood autism and autistic spectrum disorder
  1. Amanda Wood
  1. Department of Psychology, University of Birmingham, Birmingham, UK
  1. Correspondence to : Dr Amanda Wood, Department of Psychology, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK; [email protected]@ac.uk

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Implications for practice and research

  • Anticonvulsant drugs increase the risk of poor neurodevelopmental outcome.

  • Women taking sodium valproate should be counselled about potential risks well in advance of pregnancy.

  • Further research is required to understand whether lower doses reduce the risk of autism to population levels.

  • Prospective longitudinal studies assessing all children are necessary to clarify the full extent of risk associated with prenatal medication exposures.

Context

The clinical management of women with epilepsy during pregnancy is complicated by the potential teratogenicity of medications needed to control seizures. Past research about the relationship between prenatal exposure to antiepileptic drugs and major congenital malformations has improved understanding of the immediate effects for the child, with recent studies highlighting the long-term impact on cognitive development.1 ,2 …

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