RT Journal Article SR Electronic T1 Perioperative mortality rates in low-income and middle-income countries: a systematic review and meta-analysis JF BMJ Global Health FD BMJ Publishing Group Ltd SP e000810 DO 10.1136/bmjgh-2018-000810 VO 3 IS 3 A1 Joshua S Ng-Kamstra A1 Sumedha Arya A1 Sarah L M Greenberg A1 Meera Kotagal A1 Catherine Arsenault A1 David Ljungman A1 Rachel R Yorlets A1 Arnav Agarwal A1 Claudia Frankfurter A1 Anton Nikouline A1 Francis Yi Xing Lai A1 Charlotta L Palmqvist A1 Terence Fu A1 Tahrin Mahmood A1 Sneha Raju A1 Sristi Sharma A1 Isobel H Marks A1 Alexis Bowder A1 Lebei Pi A1 John G Meara A1 Mark G Shrime YR 2018 UL http://gh.bmj.com/content/3/3/e000810.abstract AB Introduction The Lancet Commission on Global Surgery proposed the perioperative mortality rate (POMR) as one of the six key indicators of the strength of a country’s surgical system. Despite its widespread use in high-income settings, few studies have described procedure-specific POMR across low-income and middle-income countries (LMICs). We aimed to estimate POMR across a wide range of surgical procedures in LMICs. We also describe how POMR is defined and reported in the LMIC literature to provide recommendations for future monitoring in resource-constrained settings.Methods We did a systematic review of studies from LMICs published from 2009 to 2014 reporting POMR for any surgical procedure. We extracted select variables in duplicate from each included study and pooled estimates of POMR by type of procedure using random-effects meta-analysis of proportions and the Freeman-Tukey double arcsine transformation to stabilise variances.Results We included 985 studies conducted across 83 LMICs, covering 191 types of surgical procedures performed on 1 020 869 patients. Pooled POMR ranged from less than 0.1% for appendectomy, cholecystectomy and caesarean delivery to 20%–27% for typhoid intestinal perforation, intracranial haemorrhage and operative head injury. We found no consistent associations between procedure-specific POMR and Human Development Index (HDI) or income-group apart from emergency peripartum hysterectomy POMR, which appeared higher in low-income countries. Inpatient mortality was the most commonly used definition, though only 46.2% of studies explicitly defined the time frame during which deaths accrued.Conclusions Efforts to improve access to surgical care in LMICs should be accompanied by investment in improving the quality and safety of care. To improve the usefulness of POMR as a safety benchmark, standard reporting items should be included with any POMR estimate. Choosing a basket of procedures for which POMR is tracked may offer institutions and countries the standardisation required to meaningfully compare surgical outcomes across contexts and improve population health outcomes.