Objective To describe the incidence and main causes of maternal near-miss events in middle-income countries using the World Health Organization’s (WHO) maternal near-miss tool and to evaluate its applicability in these settings. Methods We did a systematic review of studies on maternal near misses in middle-income countries published over 2009–2020. We extracted data on number of live births, number of maternal near misses, major causes of maternal near miss and most frequent organ dysfunction. We extracted, or calculated, the maternal near-miss ratio, maternal mortality ratio and mortality index. We also noted descriptions of researchers’ experiences and modifications of the WHO tool for local use. Findings We included 69 studies from 26 countries (12 lower-middle- and 14 upper-middle-income countries). Studies reported a total of 50 552 maternal near misses out of 10 450 482 live births. Median number of cases of maternal near miss per 1000 live births was 15.9 (interquartile range, IQR: 8.9–34.7) in lower-middle- and 7.8 (IQR: 5.0–9.6) in upper-middle-income countries, with considerable variation between and within countries. The most frequent causes of near miss were obstetric haemorrhage in 19/40 studies in lower-middle-income countries and hypertensive disorders in 15/29 studies in upper-middle-income countries. Around half the studies recommended adaptations to the laboratory and management criteria to avoid underestimation of cases of near miss, as well as clearer guidance to avoid different interpretations of the tool. Conclusion In several countries, adaptations of the WHO near-miss tool to the local context were suggested, possibly hampering international comparisons, but facilitating locally relevant audits to learn lessons.

Systematic analysis of women with Severe Maternal Outcome with the help of the WHO-Maternal Near Miss tool gave insight into causes.

Objective To determine incidence, risk indicators, and outcomes of emergency peripartum hysterectomy (EPH) in Metro East, Cape Town, South Africa. Methods A population‐based district‐wide prospective descriptive study of EPH in public hospitals from November 2014 to November 2015. Women were enrolled by using the WHO maternal near miss tool and followed until discharge. EPH was defined as hemorrhage or infection leading to hysterectomy during pregnancy or within 42 days of delivery. Results Fifty‐nine women experienced EPH with an overall incidence of 14.3 per 10 000 women: 32 procedures were for postpartum hemorrhage, 27 for puerperal sepsis. Two women died: one from sepsis; one from hemorrhage. Overall, 51 (86%) women delivered by cesarean, and 23/51 (45%) by repeat cesarean. As compared with hemorrhage, EPH for sepsis involved older women (mean age, 31.5 vs 24.4 years) and those with higher gravidity (median, 3 vs 1), and was associated with longer hospital admission (median, 11.5 vs 4 days), with occurrence later postpartum (median, 8 vs 0 days), and more frequently with complications. Conclusions The incidence of EPH for sepsis was higher than previously reported. Repeat cesarean was strongly associated with EPH. Clinical characteristics of sepsis‐related EPH compared unfavorably with those of hemorrhage‐related EPH.