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Understanding and Responding to Prescribing Patterns of Sodium Valproate-Containing Medicines in Pregnant Women and Women of Childbearing Age in Western Cape, South Africa

Author

Listed:
  • Ushma Mehta

    (University of Cape Town)

  • Mariette Smith

    (University of Cape Town
    Provincial Government of the Western Cape)

  • Emma Kalk

    (University of Cape Town)

  • Helen Hayes

    (Provincial Government of the Western Cape)

  • Annoesjka Swart

    (University of Cape Town)

  • Lawrence Tucker

    (University of Cape Town)

  • Renier Coetzee

    (University of the Western Cape)

  • Andrew Boulle

    (University of Cape Town
    Provincial Government of the Western Cape)

  • Marc Blockman

    (University of Cape Town)

Abstract

Introduction Growing evidence of the teratogenic potential of sodium valproate (VPA) has changed prescribing practices across the globe; however, the impact of this research and the consequent dissemination of a Dear Health Care Professional Letter (DHCPL) in December 2015, recommending avoidance of the teratogen VPA in women of childbearing age (WOCBA) and pregnant women in South Africa, is unknown. We explored trends and reasons for VPA use among pregnant women and WOCBA in the public sector in Western Cape Province from 1 January 2015 to 31 December 2017. Methods Using the provincial health information exchange that collates routine electronic health data via unique patient identifiers, we analysed clinical and pharmacy records from 2015 to 2017 to determine prescription patterns of VPA and other antiepileptic drug (AED) and mood-stabilising medicine (MSM) use in WOCBA and pregnant women. Senior clinicians and policy makers were consulted to understand the determinants of VPA use. Results At least one VPA prescription was dispensed to between 8205 (0.79%) and 9425 (0.94%) WOBCA from a cohort of approximately 1 million WOCBA attending provincial health care facilities per year. Prescriptions were more likely in HIV-infected women compared with HIV-uninfected women (1.1–1.3% vs. 0.7–0.9%; p

Suggested Citation

  • Ushma Mehta & Mariette Smith & Emma Kalk & Helen Hayes & Annoesjka Swart & Lawrence Tucker & Renier Coetzee & Andrew Boulle & Marc Blockman, 2021. "Understanding and Responding to Prescribing Patterns of Sodium Valproate-Containing Medicines in Pregnant Women and Women of Childbearing Age in Western Cape, South Africa," Drug Safety, Springer, vol. 44(1), pages 41-51, January.
    • Handle: RePEc:spr:drugsa:v:44:y:2021:i:1:d:10.1007_s40264-020-00987-4
    DOI: 10.1007/s40264-020-00987-4
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