Is There an Age Limit for a Trial of Vaginal Delivery in Nulliparous Women?

Gil Zeevi*, Rita Zlatkin, Alyssa Hochberg, Shir Danieli-Gruber, Ohad Houri, Eran Hadar, Asnat Walfisch, Avital Wertheimer

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Background: The number of nulliparous women over the age of 35 is consistently increasing, and the optimal delivery strategy is a subject of ongoing discussion. This study compares perinatal outcomes in nulliparous women aged ≥35 years undergoing a trial of labor (TOL) versus a planned cesarean delivery (CD). Methods: A retrospective cohort study including all nulliparous women ≥ 35 years who delivered a single term fetus at a single center between 2007–2019. We compared obstetric and perinatal outcomes according to mode of delivery—TOL versus a planned CD, in three different age groups: (1) 35–37 years, (2) 38–40 years, and (3) >40 years. Results: Out of 103,920 deliveries during the study period, 3034 women met the inclusion criteria. Of them, 1626 (53.59%) were 35–37 years old (group 1), 848 (27.95%) were 38–40 (group 2), and 560 (18.46%) were >40 years (group 3). TOL rates decreased as age increased: 87.7% in group 1, 79.3% in group 2, and 50.1% in group 3, p < 0.001. Rates of successful vaginal delivery were 83.4% in group 1, 79.0% in group 2, and 69.4% in group 3, p < 0.001). Neonatal outcomes were comparable between a TOL and a planned CD. Using multivariate logistic regression, maternal age was found to be independently associated with slightly increased odds for a failed TOL (aOR = 1.13, CI 95% 1.067–1.202). Conclusions: A TOL at advanced maternal age appears to be safe, with considerable success rates. As maternal age advances, there is a small additive risk of intrapartum CD.

Original languageEnglish
Article number3620
JournalJournal of Clinical Medicine
Volume12
Issue number11
DOIs
StatePublished - Jun 2023
Externally publishedYes

Keywords

  • advanced maternal age
  • cesarean section
  • elderly primipara
  • first vaginal delivery
  • labor and delivery
  • pregnancy complications

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