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Term elective induction of labour and perinatal outcomes in obese women: retrospective cohort study.


ABSTRACT:

Objective

To compare perinatal outcomes between elective induction of labour (eIOL) and expectant management in obese women.

Design

Retrospective cohort study.

Setting

Deliveries in California in 2007.

Population

Term, singleton, vertex, nonanomalous deliveries among obese women (n = 74 725).

Methods

Women who underwent eIOL at 37 weeks were compared with women who were expectantly managed at that gestational age. Similar comparisons were made at 38, 39, and 40 weeks. Results were stratified by parity. Chi-square tests and multivariable logistic regression were used for statistical comparison.

Main outcome measures

Method of delivery, severe perineal lacerations, postpartum haemorrhage, chorioamnionitis, macrosomia, shoulder dystocia, brachial plexus injury, respiratory distress syndrome.

Results

The odds of caesarean delivery were lower among nulliparous women with eIOL at 37 weeks [odds ratio (OR) 0.55, 95% confidence interval (CI) 0.34-0.90] and 39 weeks (OR 0.77, 95% CI 0.63-0.95) compared to expectant management. Among multiparous women with a prior vaginal delivery, eIOL at 37 (OR 0.39, 95% CI 0.24-0.64), 38 (OR 0.65, 95% CI 0.51-0.82), and 39 weeks (OR 0.67, 95% CI 0.56-0.81) was associated with lower odds of caesarean. Additionally, eIOL at 38, 39, and 40 weeks was associated with lower odds of macrosomia. There were no differences in the odds of operative vaginal delivery, lacerations, brachial plexus injury or respiratory distress syndrome.

Conclusions

In obese women, term eIOL may decrease the risk of caesarean delivery, particularly in multiparas, without increasing the risks of other adverse outcomes when compared with expectant management.

SUBMITTER: Lee VR 

PROVIDER: S-EPMC4742358 | BioStudies | 2016-01-01

REPOSITORIES: biostudies

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