Determinants of obstructed labour and associated outcomes in referral hospitals in Nigeria.

Objective: To estimate the prevalence of obstructed labour, associated risk factors and outcomes across a network of referral hospitals in Nigeria. Design: Retrospective observational study. Setting: A total of 54 referral‐level hospitals across the six geopolitical regions of Nigeria. Population: Pregnant women who were diagnosed with obstructed labour during childbirth and subsequently underwent an emergency caesarean section between 1 September 2019 and 31 August 2020. Methods: Secondary analysis of routine maternity care data sets. Random‐effects multivariable logistic regression was used to ascertain the factors associated with obstructed labour. Main outcome measures: Risk factors for obstructed labour and related postpartum complications, including intrapartum stillbirth, maternal death, uterine rupture, postpartum haemorrhage and sepsis. Results: Obstructed labour was diagnosed in 1186 (1.7%) women. Among these women, 31 (2.6%) cases resulted in maternal death and 199 (16.8%) cases resulted in postpartum complications. Women under 20 years of age (OR 2.03, 95% CI 1.50–2.75), who lacked formal education (OR 1.88, 95% CI 1.55–2.30), were unemployed (OR 1.94, 95% CI 1.57–2.41), were nulliparous (OR 2.11, 95% CI 1.83–2.43), did not receive antenatal care (OR 3.34, 95% CI 2.53–4.41) or received antenatal care in an informal healthcare setting (OR 8.18, 95% CI 4.41–15.14) were more likely to experience obstructed labour. Ineffective referral systems were identified as a major contributor to maternal death. Conclusions: Modifiable factors contributing to the prevalence of obstructed labour and associated adverse outcomes in Nigeria can be addressed through targeted policies and clinical interventions. [ABSTRACT FROM AUTHOR]