Cervical dilation at time of caesarean delivery in nulliparous women: a population-based cohort study.

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Clinical Guidelines
Authored By
Riddell CA, Kaufman JS, Strumpf EC, Abenhaim HA, Hutcheon JA
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Interests
Obstetrics & Gynecology
Surgery
Speciality
Obstetrics & Gynecology
Surgery
Book Detail
volume
124
ISSN
1471-0528
No. of pages
9
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ISSN
1471-0528 ; Electronic
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true
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Additional Info
["Riddell CA, Kaufman JS, Strumpf EC, Abenhaim HA, Hutcheon JA","Publisher: Wiley-Blackwell Country of Publication: England NLM ID: 100935741 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1471-0528 (Electronic) Linking ISSN: 14700328 NLM ISO Abbreviation: BJOG Subsets: MEDLINE","Journal Article; Multicenter Study","2017-10-01","BJOG : an international journal of obstetrics and gynaecology [BJOG] 2017 Oct; Vol. 124 (11), pp. 1753-1761. Date of Electronic Publication: 2016 Aug 26.","English","1471-0528","Cervix Uteri\/*physiology , Cesarean Section\/*statistics & numerical data , Dystocia\/*physiopathology , Guideline Adherence\/*statistics & numerical data , Labor Onset\/*physiology , Practice Patterns, Physicians'\/*statistics & numerical data, Adult ; Canada\/epidemiology ; Dilatation ; Female ; Humans ; Infant, Newborn ; Oxytocics\/therapeutic use ; Parity ; Pregnancy ; Retrospective Studies","Adult, Canada epidemiology, Dilatation, Female, Humans, Infant, Newborn, Oxytocics therapeutic use, Parity, Pregnancy, Retrospective Studies, Cervix Uteri physiology, Cesarean Section statistics & numerical data, Dystocia physiopathology, Guideline Adherence statistics & numerical data, Labor Onset physiology, Practice Patterns, Physicians' statistics & numerical data","BJOG : an international journal of obstetrics and gynaecology","124"]
Description
Objectives: Our objective was to describe contemporary practice patterns in the timing of caesarean delivery in relation to cervical dilation, overall and by indication for caesarean. Our secondary objective was to examine how commonly caesarean delivery was performed for labour dystocia at dilations below 4 cm or without the use of oxytocin, overall and between hospitals.<br />Design: Retrospective, population-based cohort study.<br />Setting: Ontario, Alberta, and British Columbia, Canada, 2008-2012.<br />Population: Nulliparous women in labour who delivered term singletons in cephalic position.<br />Methods: Histograms were used to examine the distribution of cervical dilation at time of caesarean delivery, overall and by indication for caesarean. Funnel plots were used to illustrate variation in hospital-level rates of caesarean deliveries for labour dystocia that were performed early (&lt;4 cm dilation) or without the use of oxytocin.<br />Main Outcome Measures: Cervical dilation (in centimetres) at time of caesarean delivery.<br />Results: The population-based cohort comprised 392 025 women, of whom 18.8% had a caesarean delivery. Of first-stage caesareans for labour dystocia in women who entered labour spontaneously, 13.6% (95% CI 12.9, 14.2) had dilations &lt;4 cm [hospital-level inter-quartile range (IQR): 6.2% to 20.0%] and 29.5% (95% CI 28.6, 30.4) did not receive oxytocin to treat their dystocia (hospital-level IQR: 22.1-54.6%).<br />Conclusions: The proportion of caesareans done before 4 cm dilation or without oxytocin varies substantially across hospitals and suggests the need for institutions to review their practices and ensure that management of labour practice guidelines are followed.<br />Tweetable Abstract: Many caesareans for labour dystocia are performed early during labour (&lt;4 cm dilation) or without oxytocin.<br /> (© 2016 Royal College of Obstetricians and Gynaecologists.)
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