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Related Experiment Videos

When has an induction failed?

Charla E Simon1, William A Grobman

  • 1Department of Obstetrics and Gynecology, Northwestern University Medical School, Chicago, Illinois, USA.

Obstetrics and Gynecology
|April 2, 2005
PubMed
Summary
This summary is machine-generated.

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A latent labor phase up to 18 hours during induction in nulliparous women is safe. Most women achieve vaginal delivery without increased maternal or neonatal complications.

Area of Science:

  • Obstetrics and Gynecology
  • Maternal-Fetal Medicine

Background:

  • Induction of labor is common in nulliparous women.
  • The optimal duration of the latent phase during labor induction is not well-defined.

Purpose of the Study:

  • To determine the association between latent phase length and the likelihood of vaginal delivery and maternal/neonatal morbidity during labor induction in nulliparous women.

Main Methods:

  • Retrospective analysis of 397 nulliparous women undergoing labor induction at ≥36 weeks gestation.
  • Latent phase defined from oxytocin initiation/amniotomy to 4 cm dilation/80% effacement or 5 cm dilation.
  • Data abstracted on demographics, labor course, and outcomes.

Main Results:

  • Overall cesarean rate was 26.0%; only 2% failed to achieve active labor.

Related Experiment Videos

  • Latent phases >18 hours were associated with increased chorioamnionitis (16%) and postpartum hemorrhage (26%), but not severe maternal complications.
  • No significant increase in neonatal morbidity was observed with longer latent phases.

    • Conclusions:

    • A latent phase of up to 18 hours during labor induction in nulliparous women is generally associated with successful vaginal delivery.
    • This duration does not significantly increase the risk of major maternal or neonatal complications.