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Arch Gynecol Obstet. 2013 Mar;287(3):407-11. doi: 10.1007/s00404-012-2582-1. Epub 2012 Oct 5.

Delivery outcomes in women undergoing elective labor induction at term.

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Department of Obstetrics and Gynecology, Resurrection Health Care/St. Joseph Hospital, 2900 N. Lakeshore Drive, Chicago, IL 60657, USA.



To determine elective induction of labor outcomes in term, low-risk women who delivered in a community teaching hospital.


This is a retrospective cohort study of women admitted from January 1, 2006 to January 31, 2010, for elective induction of labor. A comprehensive search of the perinatal database identified low-risk patients at ≥39 weeks gestation and ≤41 weeks with singleton pregnancies in vertex presentation. Data abstracted from manual chart review included patient demographics, admission cervical examination, and induction method. Outcome measures were delivery method and cesarean indications. Time categories calculated were mean times from induction to delivery, delivery to discharge, and total hospital length-of-stay. Descriptive statistics, frequencies, and percentages were reported using multiple regression analysis, analysis of variance, and effect tests with respective values reported. Data were analyzed using JMP software by SAS Institute Inc.


Of the 1,159 women identified, 848 records passed exclusion criteria. Vaginal delivery was accomplished for 694 (81.8 %) of patients. The most common induction agent was oxytocin (73.7 %). Induction of labor with oxytocin and artificial rupture of membranes revealed a statistically significant shorter length of induction with average induction of labor for oxytocin of 11.9 h. Multiparous patients of parity >1 and patients presenting with cervical dilation of 3-4 cm had a statistically significant higher probability of vaginal delivery. Patients induced with a foley bulb or dinoprostone had statistically longer induction times (28.2 and 24.9 h, respectively) and had a statistically significant higher probability of cesarean delivery.


Multiparous patients and patients with a favorable cervix (>2 cm) were more likely to have a vaginal delivery and shorter length of induction.

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