Prehospital emergency care : official journal of the National Association of EMS Physicians and the National Association of State EMS Directors
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This review provides an overview of the validity of Helicopter Emergency Medical Services (HEMS) dispatch criteria for severely injured patients. ⋯ Only 5 studies described HEMS dispatch criteria validity. HEMS dispatch based on consciousness criteria seems promising. MOI criteria lack accuracy and will lead to significant overtriage. The first categories needing revision are MOI and age/comorbidity.