Investigating the effects of under-triage by existing major incident triage tools

Objectives Triage is a key principle in the effective management of a major incident. Its effectiveness is a balance between identifying those in need of life-saving intervention, and those triaged incorrectly as either needing/not needing a life-saving intervention. The primary aim of this study was to report mortality in those under-triaged by existing major incident triage tools. Secondary aims were to report the ability of triage tools at identifying serious injury by body region (defined as an Abbreviated Injury Scale severity score≥3). Patients and methods Retrospective database analysis of the UK Trauma Audit Research Network for all adult patients (≥18 years) between 2006 and 2014. Patients were defined as priority one using a previously published list. Using the first recorded hospital physiology, patients were categorized by the Modified Physiological Triage Tool (MPTT), National Ambulance Resilience Unit (NARU) Sieve and the Major Incident Medical Management and Support (MIMMS) Triage Sieve. Categorical and continuous data were analyzed using a χ2-test and Mann–Whitney U-test respectively. Results During the study period, 218 985 adult patients met the Trauma Audit Research Network inclusion criteria, with 24 791 (19.5%) priority one patients, of which 70% were male with a median age of 51 (33–71) years and injury severity score of 16 (9–25). The MPTT showed the lowest rate of under-triage (42.4%, P

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