Effect of Oligohydramnios on Fetal Heart Rate Patterns during Term Labor Induction

Janine S. Rhoades, Molly J. Stout, George Macones, Alison Cahill

Research output: Contribution to journalArticle

Abstract

Objective To estimate the effect of oligohydramnios on fetal heart rate (FHR) patterns in patients undergoing induction of labor (IOL) at term. Study Design Secondary analysis of a prospective cohort study of consecutive term, singleton deliveries from 2010 to 2015. We included all patients who underwent IOL. Our primary outcomes were electronic fetal monitoring (EFM) characteristics in the 2 hours preceding delivery. Outcomes were compared between those induced with oligohydramnios and those induced without a diagnosis of oligohydramnios. Our secondary outcome was composite neonatal morbidity. Logistic regression was used to control for confounders. Results Of 3,787 patients who underwent IOL, 147 had a diagnosis of oligohydramnios and 3,640 were included in the no oligohydramnios group. There was no significant difference in EFM characteristics between the two groups. There was no difference in composite neonatal morbidity. In patients with oligohydramnios, EFM patterns with baseline tachycardia for 30 minutes or greater were significantly associated with composite neonatal morbidity (31.3 vs. 5.3% adjusted odds ratio 8.63, 95% confidence interval 2.18, 34.1]). Conclusion Term patients undergoing IOL with oligohydramnios had EFM patterns that did not differ from their induced peers.

Original languageEnglish (US)
Pages (from-to)715-722
Number of pages8
JournalAmerican journal of perinatology
Volume36
Issue number7
DOIs
StatePublished - Jan 1 2019

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Induced Labor
Oligohydramnios
Fetal Heart Rate
Cardiotocography
Morbidity
Tachycardia
Cohort Studies
Logistic Models
Odds Ratio
Prospective Studies
Confidence Intervals

Keywords

  • electronic fetal monitoring
  • fetal heart rate
  • induction of labor
  • oligohydramnios

ASJC Scopus subject areas

  • Pediatrics, Perinatology, and Child Health
  • Obstetrics and Gynecology

Cite this

Effect of Oligohydramnios on Fetal Heart Rate Patterns during Term Labor Induction. / Rhoades, Janine S.; Stout, Molly J.; Macones, George; Cahill, Alison.

In: American journal of perinatology, Vol. 36, No. 7, 01.01.2019, p. 715-722.

Research output: Contribution to journalArticle

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