The Labour Progression Study (LaPS): Duration of labour following Zhang's guideline and the WHO partograph – A cluster randomised trial

Dalbye, Rebecka; Blix, Ellen; Frøslie, Kathrine Frey; Zhang, Jun; Eggebø, Torbjørn Moe; Olsen, I.C.; Rozsa, Daniella; Øian, Pål; Bernitz, Stine

doi:10.1016/j.midw.2019.102578

Cited by 19 publications

(21 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For instance, nulliparous women in this cohort had two hours longer duration at the 95 th percentile when we included those who delivered by CS vs. findings when those with CS and adverse neonatal outcome were excluded. These results correspond with findings of the LAPS Study which showed that women who delivered by intrapartum cesarean delivery had a prolonged labor duration compared with those who delivered vaginally in both study groups [43]. Future research is needed to better understand if labor duration or other factors, such as fetal malposition, may signal risk for cesarean delivery and/or adverse neonatal outcome.…”

Section: Labor Progression For All Women (Including Cesarean Delivery)supporting

confidence: 83%

First stage progression in women with spontaneous onset of labor: A large population-based cohort study

et al. 2020

View full text Add to dashboard Cite

To describe the duration, progression and patterns of first stage of labor among Swedish women. Design Population-based cohort study. Population Data from Stockholm-Gotland Obstetric Cohort 2008-2014 including ¼ of all births in Sweden, the final sample involved a total of 85,408 women with term, singleton, vertex, live fetuses experiencing spontaneous labor onset and vaginal delivery with normal neonatal outcomes. Main outcome measures Time to progress during first stage of labor using three approaches: 1) Traverse time in hours to progress centimeter to centimeter, 5 th , 50 th (and 95 th percentile); 2) Dilation curves for different percentiles, and; 3) Cumulative duration for the 95 th percentile by parity and dilation at admission. Results Variation in both the total duration and the trajectory of cervical change over time is large. Similar to the general held view, the rate of cervical dilation accelerates at 5-6 centimeters. Among nulliparous women, the median time found in our population was faster than their

show abstract

Section: Labor Progression For All Women (Including Cesarean Delivery)supporting

confidence: 83%

First stage progression in women with spontaneous onset of labor: A large population-based cohort study

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Inclusion was restricted to Norwegian‐speaking women. Results from the LaPS were recently published 15‐17 …”

Section: Methodsmentioning

confidence: 99%

Maternal body mass index and risk of obstetric, maternal and neonatal outcomes: A cohort study of nulliparous women with spontaneous onset of labor

Dalbye

Gunnes

Blix

et al. 2020

Acta Obstet Gynecol Scand

Self Cite

View full text Add to dashboard Cite

Introduction This study investigates associations between maternal body mass index (BMI) early in pregnancy and obstetric interventions, maternal and neonatal outcomes. Material and methods This is a cohort study of nulliparous women originally included in a cluster randomized controlled trial carried out at 14 Norwegian obstetric units between 2014 and 2017. The sample included 7189 nulliparous women with a singleton fetus, cephalic presentation and spontaneous onset of labor at term, denoted as group 1 in the Ten‐Group Classification System. The women were grouped according to the World Health Organization BMI classifications: underweight (BMI <18.5), normal weight (BMI 18.5‐24.9), pre‐obesity (BMI 25.0‐29.9), obesity class I (BMI 30.0‐34.9), and obesity classes II and III (BMI ≥35.0). We used binary logistic regression to estimate crude and adjusted odds ratios (ORs) of the interventions and outcomes, with associated 95% confidence intervals (CIs), comparing women in different BMI groups with women of normal weight. Results We found an increased risk of intrapartum cesarean section in women of obesity class I and obesity classes II and III, with adjusted OR of 1.70 (95% CI 1.21‐2.38) and 2.31 (95% CI 1.41‐3.77), respectively. Women in obesity groups had a gradient of risk of epidural analgesia and use of continuous CTG (including STAN), with adjusted OR of 2.39 (95% CI 1.69‐3.38) and 3.28 (95% CI 1.97‐5.48), respectively. Women in obesity classes II and III had higher risk of amniotomy (adjusted OR = 1.42, 95% CI 1.02‐1.96), oxytocin augmentation (adjusted OR = 1.54, 95% CI 1.11‐2.15), obstetric anal sphincter injuries (adjusted OR = 2.21, 95% CI 1.01‐4.85) and postpartum hemorrhage ≥1000 mL (adjusted OR = 2.20, 95% CI 1.29‐3.78). We found a reduced likelihood of spontaneous vaginal delivery for pre‐obese women (adjusted OR = 0.85, 95% CI 0.74‐0.97) and no associations between maternal BMI and neonatal outcomes. Conclusions Obese women in Ten‐Group Classification System group 1 had increased risks of obstetric interventions and maternal complications. There was a gradient of risk for intrapartum cesarean section, with the highest risk for women in obesity classes II and III. No associations between maternal BMI and neonatal outcomes were observed.

show abstract

“…Duration of labour varies between and within populations 1 – 3 . Determining normal and abnormal labour duration is complex because duration is influenced by multiple factors, such as: spontaneous or induced start of labour 4 , 5 , parity 2 , obstetrical management 6 – 9 , infant and maternal anthropometrics such as body mass index (BMI) and maternal age 10 – 17 .…”

Section: Introductionmentioning

confidence: 99%

Association of body mass index and maternal age with first stage duration of labour

Lundborg

Liu

Åberg

et al. 2021

Sci Rep

View full text Add to dashboard Cite

To evaluate associations between early-pregnancy body mass index (BMI) and active first stage labour duration, accounting for possible interaction with maternal age, we conducted a cohort study of women with spontaneous onset of labour allocated to Robson group 1. Quantile regression analysis was performed to estimate first stage labour duration between BMI categories in two maternal age subgroups (more and less than 30 years). Results show that obesity (BMI > 30) among younger women (< 30 years) increased the median labour duration of first stage by 30 min compared with normal weight women (BMI < 25), and time difference estimated at the 90th quantile was more than 1 h. Active first stage labour time differences between obese and normal weight women was modified by maternal age. In conclusion: (a) obesity is associated with longer duration of first stage of labour, and (b) maternal age is an effect modifier for this association. This novel finding of an effect modification between BMI and maternal age contributes to the body of evidence that supports a more individualized approach when describing labour duration.

show abstract

The Labour Progression Study (LaPS): Duration of labour following Zhang's guideline and the WHO partograph – A cluster randomised trial

Cited by 19 publications

References 25 publications

First stage progression in women with spontaneous onset of labor: A large population-based cohort study

First stage progression in women with spontaneous onset of labor: A large population-based cohort study

Maternal body mass index and risk of obstetric, maternal and neonatal outcomes: A cohort study of nulliparous women with spontaneous onset of labor

Association of body mass index and maternal age with first stage duration of labour

Contact Info

Product

Resources

About