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Association of Cervical Effacement With the Rate of Cervical Change in Labor Among Nulliparous Women
Journal article   Open access   Peer reviewed

Association of Cervical Effacement With the Rate of Cervical Change in Labor Among Nulliparous Women

Elizabeth S. Langen, Steven J. Weiner, Steven L. Bloom, Dwight J. Rouse, Michael W. Varner, Uma M. Reddy, Susan M. Ramin, Steve N. Caritis, Alan M. Peaceman, Yoram Sorokin, …
Obstetrics and gynecology (New York. 1953), v 127(3), pp 489-495
01 Mar 2016
PMID: 26855099
url
https://europepmc.org/articles/pmc5102500View
Accepted (AM)Open Access (License Unspecified) Open

Abstract

Life Sciences & Biomedicine Obstetrics & Gynecology Science & Technology
OBJECTIVE: To assess the association of cervical effacement with the rate of intrapartum cervical change among nulliparous women. METHODS: We conducted a secondary analysis of a prospective trial of intrapartum fetal pulse oximetry. For women who had vaginal deliveries, interval-censored regression was used to estimate the time to dilate at 1-cm intervals. For each given centimeter of progressive cervical dilation, women were divided into those who had achieved 100% cervical effacement and those who had not. The analysis was performed separately for women in spontaneous labor and those who were given oxytocin. RESULTS: A total of 3,902 women were included in this analysis, 1,466 (38%) who underwent labor induction, 1,948 (50%) who underwent labor augmentation (combined for the analysis), and 488 (13%) who labored spontaneously. For women in spontaneous labor, the time to dilate 1 cm was shorter for those who were 100% effaced starting at 4 cm of cervical dilation (P=.01 to <.001). For women who received oxytocin, the time to dilate 1 cm was shorter for those who were 100% effaced throughout labor (P<.001). CONCLUSION: The rate of cervical dilation among nulliparous women is associated with not only the degree of cervical dilation, but also with cervical effacement. CLINICAL TRIAL REGISTRATION: ClinicalTrials.gov, [GRAPHICS] , NCT00098709.

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Collaboration types
Domestic collaboration
Web of Science research areas
Obstetrics & Gynecology
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