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Adverse effect of amniofetography on fetal thyroid function

F Rodesch, M Camus, A M Ermans

    American Journal of Obstetrics and Gynecology
    |November 15, 1976
    PubMed
    Summary
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    Amniofetography, used for diagnosing fetal malformations, may temporarily affect fetal thyroid function. This study assessed thyroid hormones in newborns after the procedure, revealing a transient impairment.

    Area of Science:

    • Medical Imaging
    • Endocrinology
    • Prenatal Diagnosis

    Background:

    • Amniofetography is a diagnostic tool for fetal malformations in high-risk pregnancies.
    • Limited data exist on the impact of iodinated radiopaque contrast agents on fetal thyroid function.
    • Assessing the effects of amniofetography on fetal thyroid function is crucial.

    Purpose of the Study:

    • To evaluate the impact of amniofetography on fetal thyroid function.
    • To investigate changes in serum thyrotropin and thyroxine levels post-procedure.

    Main Methods:

    • Serial measurements of serum thyrotropin and thyroxine were performed.
    • The study included seven newborn infants who underwent amniofetography.
    • Hormone levels were monitored to assess thyroid function.

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    Main Results:

    • Amniofetography was demonstrated to induce a transient impairment of fetal thyroid function.
    • Observed changes in thyrotropin and thyroxine levels indicate temporary thyroid dysfunction.
    • The effects were transient, suggesting a temporary disruption.

    Conclusions:

    • Amniofetography can lead to temporary impairment of fetal thyroid function.
    • Further research may be needed to understand the long-term implications.
    • Clinical monitoring of thyroid function in infants exposed to amniofetography is recommended.