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Success of labor induction for pre-eclampsia at preterm and term gestational ages
C Roland1, C R Warshak1, E A DeFranco1,2
1Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, University of Cincinnati College of Medicine, Cincinnati, OH, USA.
Objective:
Determine the impact of gestational age (GA) on vaginal delivery following induction of labor (IOL) for pre-eclampsia, and evaluate factors that influence successful induction.
Study Design:
Population-based retrospective cohort of 1 034 552 live births in Ohio (2006-2012). The rate of vaginal delivery in women with pre-eclampsia who underwent induction was calculated with 95% confidence intervals, stratified by week of GA at birth. Factors associated with the decision to undergo IOL, and success of IOL were evaluated, and multivariable logistic regression estimated the strength of association.
Results:
18 296 (71.3%) of the patients who underwent IOL had a vaginal delivery. The majority achieved vaginal delivery at both preterm (66% at 23-36 weeks) and term GAs (72%). Factors most strongly associated with vaginal delivery following IOL for pre-eclampsia included prior vaginal delivery and young maternal age.
Conclusion:
The majority of women with pre-eclampsia who undergo IOL achieve vaginal birth, even at early GAs.
