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Related Experiment Videos

Fetal breathing in labor

P Boylan, P J Lewis

    Obstetrics and Gynecology
    |July 1, 1980
    PubMed
    Summary
    This summary is machine-generated.

    Fetal breathing movements (FBM) significantly decrease during labor compared to antenatal periods. Maternal glucose infusion did not affect FBM, while artificial membrane rupture inhibited them.

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    Area of Science:

    • Obstetrics and Gynecology
    • Fetal Physiology
    • Perinatal Medicine

    Background:

    • Fetal breathing movements (FBM) are observable antenatally.
    • The transition of fetal behavior during labor is not fully understood.

    Purpose of the Study:

    • To investigate the persistence and changes in fetal breathing movements (FBM) during labor.
    • To assess the influence of maternal glucose infusion and artificial rupture of membranes (ARM) on FBM during labor.

    Main Methods:

    • Comparison of antenatal FBM with FBM during labor in 22 pregnancies.
    • Double-blind trial assessing maternal glucose infusion effects on FBM in 12 pregnancies.
    • Examination of ARM influence on FBM in 8 pregnancies.

    Main Results:

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    • FBM decreased from 36% of fetal time antenatally to less than 1% during labor.
    • Maternal glucose infusion did not stimulate fetal breathing or trunk movements.
    • Artificial rupture of membranes (ARM) significantly inhibited fetal breathing but not trunk movements prior to labor onset.

    Conclusions:

    • Cessation of fetal breathing in labor is a normal phenomenon.
    • The precise cause for the reduction in FBM during labor remains unidentified.
    • ARM may inhibit fetal breathing before labor onset.