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Related Experiment Videos

Fetal acceleration test

E H Bishop

    American Journal of Obstetrics and Gynecology
    |December 15, 1981
    PubMed
    Summary
    This summary is machine-generated.

    Fetal acceleration tests show nonreactive results decrease with gestational age. This suggests nonreactivity may be linked to fetal development, not necessarily distress, questioning early test use in high-risk pregnancies.

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    Area of Science:

    • Perinatology
    • Maternal-Fetal Medicine
    • Obstetrics

    Background:

    • Fetal acceleration tests are used to assess fetal well-being.
    • The interpretation of nonreactive test results, especially in early gestation, can be challenging.
    • High-risk pregnancies often undergo frequent fetal monitoring.

    Purpose of the Study:

    • To analyze the relationship between gestational age and nonreactive fetal acceleration tests in normal and high-risk pregnancies.
    • To evaluate the reliability of fetal acceleration tests for identifying fetal jeopardy across different gestational ages.
    • To determine the clinical utility of fetal acceleration tests before 30 weeks of gestation.

    Main Methods:

    • Performed 531 fetal acceleration tests on 112 normal subjects (22-41 weeks gestational age).

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  • Performed 919 fetal acceleration tests on 339 high-risk subjects.
  • Analyzed the frequency of nonreactive tests in relation to gestational age for both groups.

    • Main Results:

    • Nonreactive test frequency decreased significantly with advancing gestational age in normal subjects (56% at 22-25 weeks to 6% at 38-41 weeks).
    • Nonreactive test frequencies in high-risk subjects did not significantly differ from normal subjects when stratified by gestational age.
    • A high frequency of nonreactive tests was observed in normal fetuses at earlier gestational ages.

    Conclusions:

    • The high rate of nonreactive tests before 30 weeks' gestation may lead to false positives, questioning their use.
    • Nonreactivity appears to be primarily a function of gestational age, rather than a definitive indicator of fetal compromise.
    • The prevalence of nonreactive tests in normal fetuses may limit the reliability of these tests for managing high-risk pregnancies.