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Relation between birth weight and thyroid function in preeclampsia-eclampsia

E Kaya1, Y Sahin, Z Ozkeçeci

  • 1Department of Obstetrics and Gynecology, Faculty of Medicine, University of Erciyes, Kayseri, Turkey.

Gynecologic and Obstetric Investigation
|January 1, 1994
PubMed
Summary

Maternal thyroid hormones like total thyroxine (TT4) and total triiodothyronine (TT3) correlate with newborn birth weight in preeclampsia-eclampsia. Reduced levels may indicate disease severity in pregnant patients.

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Area of Science:

  • Endocrinology
  • Obstetrics
  • Perinatology

Background:

  • Preeclampsia-eclampsia is a serious pregnancy complication.
  • Maternal thyroid function plays a crucial role in pregnancy outcomes.
  • The relationship between thyroid hormones and fetal growth in preeclampsia requires further investigation.

Purpose of the Study:

  • To investigate the correlation between maternal thyroid function and newborn birth weight in preeclamptic and eclamptic patients.
  • To compare these correlations with those in normal pregnant women.

Main Methods:

  • Maternal thyroid function tests were performed in 37 preeclamptic, 8 eclamptic, and 45 control pregnant women (third trimester).
  • Measurements included total thyroxine (TT4), total triiodothyronine (TT3), thyroxine-binding globulin, free thyroxine index, free thyroxine, free triiodothyronine, triiodothyronine uptake, and thyroid-stimulating hormone.

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  • Correlations with newborn birth weight were analyzed.

    • Main Results:

    • Significant correlations were found between maternal TT4, TT3, thyroxine-binding globulin, free thyroxine index, and birth weight in preeclampsia-eclampsia patients.
    • No such correlations were observed in the control group.
    • Maternal free thyroxine, free triiodothyronine, triiodothyronine uptake, and thyroid-stimulating hormone showed no correlation with birth weight in either group.
    • Reduced serum TT4 and TT3 concentrations may reflect preeclampsia severity.

    Conclusions:

    • Maternal thyroid hormone levels, specifically TT4 and TT3, are significantly associated with birth weight in preeclampsia-eclampsia.
    • These findings suggest that altered thyroid function may contribute to fetal growth restriction in this condition.
    • Reduced TT4 and TT3 may serve as potential indicators of preeclampsia severity.