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Related Experiment Videos

Perinatal outcome in hypothyroid pregnancies

A S Leung1, L K Millar, P P Koonings

  • 1Department of Obstetrics and Gynecology, University of Southern California, Women's Hospital, Los Angeles.

Obstetrics and Gynecology
|March 1, 1993
PubMed
Summary

Hypothyroidism in pregnant individuals significantly increases the risk of gestational hypertension. Normalizing thyroid function may prevent these complications, ensuring better perinatal outcomes.

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Area of Science:

  • Obstetrics and Gynecology
  • Endocrinology
  • Perinatal Medicine

Background:

  • Hypothyroidism, a condition of insufficient thyroid hormone production, affects numerous bodily functions.
  • Perinatal outcomes can be significantly impacted by maternal endocrine status.
  • The relationship between hypothyroidism and pregnancy complications requires further elucidation.

Purpose of the Study:

  • To investigate the association between hypothyroidism and adverse perinatal outcomes.
  • To determine the incidence of gestational hypertension, low birth weight, and other complications in hypothyroid pregnancies.
  • To assess the potential of thyroid function normalization in mitigating these risks.

Main Methods:

  • A cohort study involving 68 hypothyroid patients without other medical conditions.

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  • Patients were categorized into overt (n=23) and subclinical (n=45) hypothyroidism groups.
  • Pregnancy outcomes including gestational hypertension, low birth weight, fetal death, congenital anomalies, anemia, and hemorrhage were evaluated.

    • Main Results:

    • Gestational hypertension (eclampsia, preeclampsia, pregnancy-induced hypertension) was significantly more prevalent in overt and subclinical hypothyroid groups (22%, 15%, 7.6%) compared to the general population.
    • Maternal hypothyroidism at delivery was linked to gestational hypertension in 36% of overt and 25% of subclinical cases.
    • Low birth weight was primarily attributed to premature delivery for managing gestational hypertension; other adverse fetal/neonatal outcomes were rare.

    Conclusions:

    • Hypothyroidism is a significant risk factor for gestational hypertension during pregnancy.
    • Normalization of thyroid function during pregnancy may prevent gestational hypertension and related complications.
    • Close monitoring and management of thyroid function are crucial for optimizing perinatal outcomes in hypothyroid patients.