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Association between sonographic measurement of fetal head circumference and labor outcome
Author(s) -
Aviram Amir,
Yogev Yariv,
Bardin Ron,
Hiersch Liran,
Wiznitzer Ar,
Hadar Eran
Publication year - 2016
Publication title -
international journal of gynecology and obstetrics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.895
H-Index - 97
eISSN - 1879-3479
pISSN - 0020-7292
DOI - 10.1016/j.ijgo.2015.06.043
Subject(s) - medicine , odds ratio , percentile , fetal head , obstetrics , vaginal delivery , confidence interval , asphyxia , pregnancy , apgar score , gynecology , fetus , statistics , mathematics , biology , genetics
Objective To evaluate the association between sonographically measured head circumference (HC) and labor outcome. Methods In a retrospective study at a tertiary medical center in Israel, data were reviewed for all term singleton deliveries between July 2007 and December 2012 with HC measurements up to 7 days before delivery. HC was compared between women with operative vaginal delivery (OVD) or cesarean delivery for prolonged second stage and those with normal vaginal delivery. The impact of HC above the 75th percentile on pregnancy outcome was analyzed. Results The study included 2351 women, of whom 2045 (87.0%) had a normal vaginal delivery, 259 (11.0%) underwent OVD, and 47 (2.0%) cesarean. Each 10 mm increase in HC was associated with increased risk for obstetric intervention because of a prolonged second stage (adjusted odds ratio [aOR] 1.26; 95% confidence interval [CI] 1.08–1.46). HC above the 75th percentile was independently associated with increased odds of OVD (aOR 1.77; 95% CI 1.30–2.41), 1‐minute Apgar score less than 7 (aOR 2.91; 95% CI 1.50–5.66), and neonatal asphyxia (aOR 2.19; 95% CI 1.02–4.71). Conclusion Term HC above the 75th percentile was associated with increased rates of obstetric interventions because of a prolonged second stage and might be associated with neonatal asphyxia.