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Related Experiment Videos

Norethisterone and gestational diabetes.

N A Beischer1, T Cookson, M Sheedy

  • 1Mercy Hospital for Women, East Melbourne, Victoria.

The Australian & New Zealand Journal of Obstetrics & Gynaecology
|August 1, 1992
PubMed
Summary

Norethisterone prescription during pregnancy increased gestational diabetes risk but lowered risks of future diabetes and impaired glucose tolerance. Some female fetuses experienced clitoral hypertrophy.

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Area of Science:

  • Reproductive Endocrinology
  • Maternal-Fetal Medicine
  • Pharmacology

Background:

  • Gestational diabetes mellitus (GDM) is a significant pregnancy complication.
  • Norethisterone is a progestogen used in various gynecological conditions.
  • The impact of norethisterone on pregnancy outcomes requires further investigation.

Observation:

  • A retrospective study analyzed data from 1971-1991.
  • Pregnancies with prescribed norethisterone showed a significantly higher incidence of GDM (32.4%) compared to controls (7.1%).
  • GDM severity, including hyperglycemia and insulin requirements, was similar between groups.

Findings:

  • Norethisterone-associated GDM presented a reduced risk of subsequent diabetes mellitus and impaired glucose tolerance.

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  • Masculinization, specifically clitoral hypertrophy, occurred in 12.8% of female fetuses exposed to norethisterone.
  • Norethisterone accounted for 33.3% of diagnosed clitoral hypertrophy cases in the overall birth cohort.

    • Implications:

    • Norethisterone use in pregnancy is associated with increased GDM risk but may offer protective effects against future metabolic disorders.
    • Potential fetal exposure risks, including clitoral hypertrophy, necessitate careful consideration during prescription.
    • Further research is warranted to elucidate the mechanisms and long-term consequences of norethisterone exposure during gestation.