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Abstract
Objective: The aim of this study was to investigate whether induction of labor in twin pregnancies is associated with higher rates of maternal complications as compared to singletons.
Method: A retrospective population-based study was conducted to compare maternal complications following induction of labor in twin pregnancies and singletons at Soroka University Medical Center, Be'er-Sheva, Israel, between 1988 and 2010. Stratified analysis using a multiple logistic regression model was performed to control for confounders.
Results: The study population included 25 913 patients following induction of labor, of these 191 (0.73%) were in twin pregnancies. Induction of labor in twin pregnancies was not associated with adverse maternal outcomes such as cervical tears, third degree perineal tears, uterine rupture, peripartum hysterectomy, post-partum hemorrhage or retained placenta. However, labor induction in twins was significantly associated with cesarean deliveries (31.2% versus 17.1%; p < 0.001).
Using a multivariable analysis controlling for confounders, induction at twins was an independent risk factor for cesarean delivery (CD; adjusted OR = 2.2, 95% CI 1.7–2.7, p < 0.001).
Conclusion: Induction of labor in twin pregnancies does not increase the risk for maternal complications. However, it is an independent risk factor for CD.