Praxis Medical Insights

Est. 2024 • Clinical Guidelines Distilled

Made possible by volunteer editors from the University of Calgary & University of Alberta

Last Updated: 9/14/2025

Management of Pregnancy Beyond 39 Weeks

Management Options at 39 Weeks

  • The American College of Obstetricians and Gynecologists recommends elective induction of labor at 39 weeks 0-4 days as a reasonable option for low-risk nulliparous women with reliable dating 1, 2
  • Expectant management until spontaneous labor or until a medical indication for delivery arises is also a reasonable approach for low-risk nulliparous women 3
  • Both elective induction and expectant management have similar neonatal outcomes, with no statistically significant difference in the composite of perinatal death or severe neonatal morbidity 1, 2

Benefits of Elective Induction at 39 Weeks

  • Elective induction of labor at 39 weeks is associated with reduced cesarean delivery rates (18.6% vs 22.2%) compared to expectant management 1, 3
  • Elective induction of labor at 39 weeks is associated with a lower incidence of hypertensive disorders of pregnancy (9.1% vs 14.1%) 1, 3

Timing of Delivery Recommendations

  • The American College of Obstetricians and Gynecologists recommends considering elective induction at 39 weeks 0 days to 39 weeks 4 days for low-risk nulliparous women 1, 3
  • For women with preeclampsia, delivery is recommended at ≥37 weeks gestation 4, 5

Protocol for Elective Induction at 39 Weeks

  • Patient selection for elective induction at 39 weeks should include confirmation of eligibility criteria, reliable dating, and nulliparous women with singleton pregnancy and cephalic presentation 1, 2, 3
  • The induction process may involve cervical ripening agents for unfavorable cervix and allowing adequate time for labor progress 1, 2

Special Considerations

  • For fetal growth restriction with normal Doppler, delivery is recommended at 38-39 weeks, but this guideline is from Praxis Medical Insights, so it will not be included 6

Important Caveats

  • The number needed to treat to prevent one cesarean delivery with elective induction at 39 weeks is 28 1, 3
  • These recommendations apply specifically to low-risk nulliparous women, and it is unknown if findings can be extrapolated to multiparous women 1, 3