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Labour dystocia - risk of recurrence and instrumental delivery in following labour: a population-based cohort study
Clinical Epidemiology Unit, Department of Medicine Solna, Karolinska University Hospital, and Institutet, Stockholm, Sweden.
Clinical Epidemiology Unit, Department of Medicine Solna, Karolinska University Hospital, and Institutet, Stockholm, Sweden.
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Obstetrics and Gynaecology. (Obstetrisk forskning/Högberg)
Clinical Epidemiology Unit, Department of Medicine Solna, Karolinska University Hospital, and Institutet, Stockholm, Sweden.
2012 (English)In: British Journal of Obstetrics and Gynecology, ISSN 1470-0328, E-ISSN 1471-0528, Vol. 119, no 13, 1648-1656 p.Article in journal (Refereed) Published
Abstract [en]

Objective

To investigate risk of recurrence of labour dystocia and mode of delivery in second labour after taking first labour and fetal and maternal characteristics into account.

Design 

A population-based cohort study.

Setting 

The Swedish Medical Birth Register from 1992 to 2006.

Population 

A total of 239 953 women who gave birth to their first and second singleton infants in cephalic presentation at ≥37 weeks of gestation with spontaneous onset of labour.

Methods

We used logistic regression analysis to estimate crude and adjusted odds ratios.

Main outcome measures 

Labour dystocia and mode of delivery in second labour.

Results 

Overall labour dystocia affected only 12% of women with previous dystocia. Regardless of mode of first delivery, rates of dystocia in the second labour were higher in women with than without previous dystocia, but were more pronounced in women with previous caesarean section (34%). Analyses with risk score groups for dystocia (risk factors were long interpregnancy interval, maternal age ≥35 years, obesity, short maternal stature, not cohabiting and post-term pregnancy) showed that risk of instrumental delivery in second labour increased with previous dystocia and increasing risk score. Among women with trial of labour after caesarean section with previous dystocia and a risk score of 3 or more, 66% had a vaginal instrumental or caesarean delivery (17 and 49%, respectively). In women with trial of labour after caesarean section without previous dystocia and a risk score of 0, corresponding risk was 32% (14 and 18%, respectively).

Conclusion

Previous labour dystocia increases the risk of dystocia in subsequent delivery. Taking first labour and fetal and maternal characteristics into account is important in the risk assessments for dystocia and instrumental delivery in second labour.

Place, publisher, year, edition, pages
2012. Vol. 119, no 13, 1648-1656 p.
National Category
Medical and Health Sciences
Identifiers
URN: urn:nbn:se:uu:diva-187917DOI: 10.1111/j.1471-0528.2012.03502.xISI: 000311292300015PubMedID: 23078516OAI: oai:DiVA.org:uu-187917DiVA: diva2:576075
Available from: 2012-12-12 Created: 2012-12-12 Last updated: 2017-12-07Bibliographically approved

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