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Caesarean section following antepartum stillbirth in Western Australia 2010–2015: A population‐based study

Bailey, H.D., Adane, A.A.ORCID: 0000-0002-3022-5230, White, S.W., Farrant, B.M. and Shepherd, C.C.J. (2022) Caesarean section following antepartum stillbirth in Western Australia 2010–2015: A population‐based study. Australian and New Zealand Journal of Obstetrics and Gynaecology . Early View.

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There is scant literature about antepartum stillbirth management but guidelines usually recommend reserving caesarean sections for exceptional circumstances. However, little is known about caesarean section rates following antepartum stillbirth in Australia.

We aimed to describe the onset of labour, mode of birth, and use of analgesia and anaesthesia following antepartum stillbirth and to identify factors associated with caesarean section.
Material and Methods

In this retrospective cohort study, we used a population-based dataset of all singleton antepartum stillbirths ≥20 weeks gestation in Western Australia between 2010-2015. The overall, primary and repeat caesarean section rates for antepartum stillbirths were calculated and multivariable Poisson regression analyses were performed to identify associated factors, and to calculate relative risks (RRs) and 95% confidence intervals (CIs).

This study included 634 antepartum stillbirths. Labour was spontaneous for 134 (21.1%), induced for 457 (72.1%), and 43 (6.8%) had a prelabour caesarean section. The overall, primary and repeat caesarean section rates were 8.5%, 4.6% and 23.0% respectively and increased with gestation (P trends all <0.01). Other factors associated with an increased caesarean section risk included: any placenta praevia or placental abruption, birth at a metropolitan private hospital, large-for-gestational-age birthweight, and any maternal chronic condition. During labour, the most frequently used types of analgesia were systemic narcotics (46.0%) and regional blocks (34.7%) while among those who had a caesarean section, 40.7% had a general anaesthetic.

In Western Australia between 2010–2015, the caesarean section rates among women with antepartum stillbirths were low, in line with current guidelines.

Item Type: Journal Article
Murdoch Affiliation(s): Ngangk Yira Research Centre for Aboriginal Health and Social Equity
Publisher: Wiley
Copyright: © 2022 The Royal Australian and New Zealand College of Obstetricians and Gynaecologists
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