Postdates induction with an unfavorable cervix and risk of cesarean
2018
AbstractObjective: To determine the risk of cesarean delivery associated with postdates induction (≥41 weeks) compared to term induction (37–40w6d) among women with an unfavorable cervix, and to examine the risk factors associated with cesarean among women undergoing postdates induction.Methods: A planned secondary analysis of a large prospective cohort study on induction (n = 854) was performed. Women with a singleton gestation, intact membranes, and an unfavorable cervix (Bishop score of ≤6 and dilation ≤2 cm) who were undergoing a term (≥37 weeks) induction for any indication were included. Women with a prior cesarean were excluded. The primary outcome was cesarean delivery. Relative risk of cesarean was estimated using a modified Poisson’s regression model.Results: There was a significantly increased risk of cesarean for women undergoing postdates induction (n = 154) compared to women 37–40w6d (n = 700), (46.8 versus 26.0%, p < .001). This increased risk of cesarean remained after adjustment for race,...
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