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BMC Pregnancy Childbirth. 2018 May 29;18(1):186. doi: 10.1186/s12884-018-1829-7.

Risk factors for peripartum hysterectomy among women with postpartum haemorrhage: analysis of data from the WOMAN trial.

Author information

1
Clinical Trials Unit, London School of Hygiene and Tropical Medicine, Keppel Street, London, WC1E 7HT, UK.
2
Clinical Trials Unit, London School of Hygiene and Tropical Medicine, Keppel Street, London, WC1E 7HT, UK. Ian.roberts@lshtm.ac.uk.
3
Department of Obstetrics and Gynaecology, National Institute of Maternal and Child Health, College of Medicine, University of Ibadan, Orita-Mefa, Ibadan, Nigeria.
4
Department of Obstetrics and Gynaecology, Rawalpindi Medical University, Rawalpindi, Pakistan.
5
St George's University, Cranmer Terrace, London, SW17 0RE, UK.

Abstract

BACKGROUND:

Peripartum hysterectomy can cause significant morbidity and mortality. Most studies of peripartum hysterectomy are from high income countries. This cohort study examined risk factors for peripartum hysterectomy using data from Africa, Asia, Europe and the Americas.

METHODS:

We used data from the World Maternal Antifibrinolytic (WOMAN) trial carried out in 193 hospitals in 21 countries. Peripartum hysterectomy was defined as hysterectomy within 6 weeks of delivery as a complication of postpartum haemorrhage. Univariable and multivariable random effects logistic regression models were used to analyse risk factors. A hierarchical conceptual framework guided our multivariable analysis.

RESULTS:

Five percent of women had a hysterectomy (1020/20,017). Haemorrhage from placenta praevia/accreta carried a higher risk of hysterectomy (17%) than surgical trauma/tears (5%) and uterine atony (3%). The adjusted odds ratio (AOR) for hysterectomy in women with placenta praevia/accreta was 3.2 (95% CI: 2.7-3.8), compared to uterine atony. The risk of hysterectomy increased with maternal age. Caesarean section was associated with fourfold higher odds of hysterectomy than vaginal delivery (AOR 4.3, 95% CI: 3.6-5.0). Mothers in Asia had a higher hysterectomy incidence (7%) than mothers in Africa (5%) (AOR: 1.2, 95% CI: 0.9-1.7).

CONCLUSIONS:

Placenta praevia/accreta is associated with a higher risk of peripartum hysterectomy. Other risk factors for hysterectomy are advanced maternal age, caesarean section and giving birth in Asia.

KEYWORDS:

Africa; Asia; Caesarean section; Conceptual framework; Peripartum hysterectomy; Placenta accreta; Postpartum haemorrhage

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