Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/35732
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Type: Journal article
Title: Morning compared with evening induction of labor
Author: Dodd, J.
Crowther, C.
Robinson, J.
Citation: Obstetrics and Gynecology, 2006; 108(2):350-360
Publisher: Lippincott Williams & Wilkins
Issue Date: 2006
ISSN: 0029-7844
1873-233X
Statement of
Responsibility: 
Jodie M. Dodd, Caroline A. Crowther, and Jeffrey S. Robinson
Abstract: OBJECTIVE: To test the hypothesis that commencing induction of labor in the morning more closely reflects the physiologic timing of onset of labor and is associated with fewer women who remain undelivered 24 hours after cervical ripening and induction begins. METHODS: This was a nested randomized clinical trial, conducted between April 2001 and December 2004. Pregnant women at more than 36+6 weeks gestation with a cephalic presentation who were scheduled for prostaglandin induction of labor were eligible to participate. Women were randomly assigned to either admission in the morning (0800 hours) or admission in the evening (2,000 hours). The primary outcome measures were vaginal birth not achieved in 24 hours, uterine hyperstimulation with associated fetal heart rate changes, and cesarean delivery. RESULTS: A total of 620 women were entered in the trial, with 280 women in the morning admission group and 340 women in the evening admission group. There were no statistically significant differences between the timing of admission for induction and the primary trial outcomes. However, women admitted in the morning were less likely to require oxytocin infusion (morning admission 126 of 280 [45.0%] compared with evening admission 184 of 340 [54.1%]; relative risk 0.83, 95% confidence interval 0.70-0.97; P=.022). Nulliparous women admitted in the morning were less likely to require operative vaginal birth (morning admission 10 of 62 [16.1%] compared with evening admission 28 of 82 [34.2%]; relative risk 0.47, 95% confidence interval 0.25-0.90; P=.015). CONCLUSION: For women who require induction of labor, consideration should be given to admission in the morning rather than admission in the evening. CLINICAL TRIAL REGISTRATION: Australian Clinical Trials Registry, www.actr.org.au, 12606000156583.
Keywords: Humans; Postoperative Complications; Oxytocics; Prostaglandins; Misoprostol; Treatment Outcome; Labor, Induced; Drug Administration Schedule; Prospective Studies; Circadian Rhythm; Pregnancy; Adult; Infant, Newborn; Female; Obstetric Labor Complications
Description: © 2006 by The American College of Obstetricians and Gynecologists
RMID: 0020062490
DOI: 10.1097/01.AOG.0000227746.35565.d9
Published version: http://www.greenjournal.org/cgi/content/abstract/108/2/350
Appears in Collections:Obstetrics and Gynaecology publications

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