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Heart rate patterns in trisomic fetuses.

V Kariniemi, P Aula

    Journal of Perinatal Medicine
    |January 1, 1982
    PubMed
    Summary
    This summary is machine-generated.

    Fetal heart rate (FHR) patterns in trisomic fetuses, particularly trisomy 18 and 13, show fewer accelerations and more decelerations, mimicking placental insufficiency. These findings aid in managing pregnancies with chromosomal abnormalities.

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    Area of Science:

    • Perinatology
    • Fetal Medicine
    • Genetics

    Background:

    • Trisomies 21, 18, and 13 are common chromosomal abnormalities affecting fetal development.
    • Fetal heart rate (FHR) monitoring is crucial for assessing fetal well-being.
    • Distinctive FHR patterns may be associated with specific trisomic conditions.

    Purpose of the Study:

    • To identify typical fetal heart rate (FHR) patterns associated with trisomy 21, 18, and 13.
    • To compare FHR patterns in trisomic fetuses with those of normal pregnancies.
    • To evaluate the clinical implications of abnormal FHR patterns in trisomic fetuses.

    Main Methods:

    • Retrospective analysis of clinical records from fetuses with trisomy 21, 18, and 13.
    • Comparison of antepartal and intrapartal FHR patterns with control groups of normal pregnancies and labors.

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  • Correlation of FHR patterns with outcomes, including cesarean section rates and indications.

    • Main Results:

    • Trisomic fetuses exhibited significantly fewer FHR accelerations compared to controls.
    • Fetuses with trisomy 18 and 13 showed more antepartal decelerations than those with trisomy 21.
    • Abnormal FHR patterns, including late decelerations and silent epochs, were observed more frequently in trisomic fetuses, resembling placental insufficiency.

    Conclusions:

    • Abnormal FHR patterns in trisomic fetuses share similarities with placental insufficiency.
    • Fetal karyotyping may be considered for growth-retarded fetuses with specific FHR abnormalities.
    • Management decisions during labor should primarily rely on FHR patterns, even in the presence of suspected trisomy.