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Original Article

Continuous oxytocin versus intermittent oxytocin for induction of labor: a randomized study

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Pages 651-656 | Received 16 Dec 2017, Accepted 08 Jul 2018, Published online: 10 Sep 2018
 

Abstract

Objective: To assess whether intermittent usage of oxytocin infusion increases the duration of the active phase of labor and reduces maternal and neonatal complications or not.

Materials and Methods: A prospective randomized controlled study was conducted of 200 consenting women with singleton pregnancy in the vertex position undergoing labor induction or augmentation at the Zeynep Kamil Maternity and Children’s Training and Research Hospital. Participants with cervical dilation of 3 cm were randomized to either continued or intermittent oxytocin infusion when cervical dilation reached 5 cm. The primary outcome measures were the duration of the active phase of labor, defined as the period of labor from 5 cm of cervical dilation to vaginal delivery. Secondary outcomes were the duration of oxytocin infusion, mode of delivery, hyperstimulation, abnormalities in fetal heart rate, perineal tears, and neonatal outcomes.

Results: The median duration of the active phase for the women with a vaginal delivery was longer in the intermittent oxytocin group than the continued oxytocin group, but it was not statistically significant (median, 6.91 vs. 7.58 h, p = .37). There was a significant difference in the duration of oxytocin infusion (median, 12.38 h in the intermittent group vs. 15.79 h in the continued group, p = .005). The incidence of uterine hyperstimulation was significantly greater in the continued group (21.1%) than the intermittent oxytocin group (3.8%) (p=.001).

Conclusions: Intermittent usage of oxytocin infusion seems to make labor less complicated without lengthening duration of labor.

Disclosure statement

No potential conflict of interest was reported by the authors.

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