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Eclampsia and fetal sex.

M López-Llera1

  • 1Hospital de Gineco-Obstetricia, No 2 del Centro Médico Nacional del I.M.S.S., México.

International Journal of Gynaecology and Obstetrics: the Official Organ of the International Federation of Gynaecology and Obstetrics
|November 1, 1990
PubMed
Summary

Fetal sex influences antepartum eclampsia frequency, with higher male ratios in younger, first-time, and older mothers. While not affecting severity or mortality, male fetuses may contribute to eclampsia causes.

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Area of Science:

  • Obstetrics
  • Perinatal Medicine
  • Reproductive Health

Background:

  • Eclampsia is a severe pregnancy complication.
  • The influence of fetal sex on eclampsia is not well understood.

Purpose of the Study:

  • To investigate the association between fetal sex and the frequency and clinical characteristics of antepartum eclampsia.
  • To explore potential contributing factors to eclampsia based on fetal sex.

Main Methods:

  • Analysis of 777 singleton pregnancies with antepartum eclampsia.
  • Comparison of male-to-female fetal sex ratios across different maternal age groups and pregnancy orders.
  • Evaluation of obstetric profiles, eclamptic symptoms, and fetomaternal mortality.
  • Comparison with 169 postpartum eclampsia cases.

Main Results:

  • The overall male-to-female fetal sex ratio was 1.23:1.
  • Higher male ratios observed in first pregnancies (1.27:1) and in mothers <20 years (1.32:1) and >30 years (1.44:1).
  • Postpartum eclampsia showed a lower male-to-female ratio (1.07:1).
  • No significant differences in obstetric profiles, symptoms, or mortality based on fetal sex were found.

Conclusions:

  • Fetal sex may play a role in the frequency of antepartum eclampsia, particularly in specific maternal subgroups.
  • Increased eclampsia severity in older women with male fetuses warrants clinical attention.
  • Potential differences in maternal-fetal hormonal and genetic interactions may contribute to eclampsia development.

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