ArticleBJOG : an international journal of obstetrics and gynaecology2022
Put your weight behind it-Effect of body mass index on the active second stage of labour: A retrospective cohort study.
Article in BJOG : an international journal of obstetrics and gynaecology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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7 citing papers in PubMed.
- Caul birth: A retrospective cohort study on prevalence, predictors, and maternal and neonatal outcomes.European journal of midwifery · 2026Article
- Body mass index and failed induction of labor: A cohort study.Acta obstetricia et gynecologica Scandinavica · 2025Article
- Associations between fetal position at delivery and duration of active phase of labor: A historical cohort study.Acta obstetricia et gynecologica Scandinavica · 2024Article
- Advances in Epidural Labor Analgesia for Obese Parturients.Journal of pain research · 2024Review
- Gestational weight gain adequacy and intrapartum oxytocin and cesarean section use: Observational population-based study in France.Acta obstetricia et gynecologica Scandinavica · 2023Article
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- Put your weight behind it-Effect of body mass index on the active second stage of labour: A retrospective cohort study.BJOG : an international journal of obstetrics and gynaecology · 2022Article
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Abstract
objectiveTo explore the duration of the active phase of the second stage of labour in relation to maternal pre-pregnant body mass index (BMI).
designRetrospective cohort study.
settingLabour wards of three Norwegian university hospitals, 2012-2019. POPULATION: Nulliparous and parous women without previous caesarean section with a live singleton fetus in cephalic presentation and spontaneous onset of labour, corresponding to the Ten Group Classification System (TGCS) group 1 and 3.
methodsWomen were stratified to BMI groups according to WHO classification, and estimated median duration of the active phase of the second stage of labour was calculated using survival analyses. Caesarean sections and operative vaginal deliveries during the active phase were censored.
main outcome measuresEstimated median duration of the active phase of second stage of labour.
resultsIn all, 47 942 women were included in the survival analyses. Increasing BMI was associated with shorter estimated median duration of the active second stage in both TGCS groups. In TGCS group 1, the estimated median durations (interquartile range) were 44 (26-75), 43 (25-71), 39 (22-70), 33 (18-63), 34 (19-54) and 29 (16-56) minutes in BMI groups 1-6, respectively. In TGCS group 3, the corresponding values were 11 (6-19), 10 (6-17), 10 (6-16), 9 (5-15), 8 (5-13) and 7 (4-11) minutes. Increasing BMI remained associated with shorter estimated median duration in analyses stratified by oxytocin augmentation and epidural analgesia.
conclusionIncreasing BMI was associated with shorter estimated median duration of the active second stage of labour.
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