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Related Experiment Videos

Does labor start too late?

C Unger1, R Zimmermann, A Huch

  • 1Department of Obstetrics, University Hospital Zurich, Switzerland.

Journal of Perinatal Medicine
|January 1, 1996
PubMed
Summary
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Optimal delivery timing minimizes peripartum complications. For lowest risk, aim for gestational weeks 37-38, especially with a normal birth weight around 3000g.

Area of Science:

  • Obstetrics and Gynecology
  • Perinatal Medicine
  • Maternal-Fetal Medicine

Background:

  • Determining optimal delivery timing is crucial for minimizing peripartum complications.
  • Previous studies suggest varying optimal gestational ages for delivery.
  • Understanding the influence of labor onset and birth weight is essential.

Purpose of the Study:

  • To identify the optimal gestational age for delivery to reduce peripartum complications.
  • To analyze the impact of labor onset and birth weight on delivery outcomes.

Main Methods:

  • Retrospective analysis of 11,834 deliveries between 35 and 42 weeks gestational age.
  • Inclusion of parameters: abnormal cardiotocogram, operative vaginal delivery, low Apgar scores, low cord blood pH, significant blood loss, epidural anesthesia, and Cesarean section.

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  • Analysis of birth weight data for 10,346 deliveries.

    • Main Results:

    • Most complications showed a parabolic distribution, with lowest incidence at gestational weeks 37-38.
    • Low Apgar scores and Cesarean sections were lowest nearer term, at gestational weeks 39-40.
    • Optimal birth weight for fewest complications was 3000g; labor onset had minimal impact on optimal timing.

    Conclusions:

    • Optimal delivery timing for lowest peripartum risk is gestational weeks 37-38, assuming normal birth weight.
    • Gestational weeks 39-40 may be optimal for reducing low Apgar scores and Cesarean sections.
    • Delivery timing decisions should consider gestational age and birth weight for improved maternal and neonatal outcomes.