• Chase Krook, Domhnall O'Dochartaigh, Doug Martin, Zoë Piggott, Ryan Deedo, Sarah Painter, Gennifer van Werkhoven, Darcy McKay, Dennis Nesdoly, and J N Armstrong.
• *Shock Trauma Air Rescue Society,Calgary,AB.
• Can J Emerg Med. 2019 May 1; 21 (3): 365-373.

ObjectivePrehospital blood transfusion has been adopted by many civilian helicopter emergency medical services agencies, and early outcomes are positive. The Shock Trauma Air Rescue Society operates six bases in Western Canada and started a blood on board process in 2013 in Regina that has expanded to all bases. Two units of O negative packed red blood cells are carried on every mission. We describe the processes and standard work ensuring safe storage, administration, and stewardship of this important resource.MethodsThe packed red blood cells are stored in an inexpensive, reusable temperature controlled cooler at 1°C-6°C. Close collaboration with local transfusion services and adherence to Canadian transfusion standards contributes to safety and sustainability.ResultsFrom October 1, 2013 to October 10, 2017, the Shock Trauma Air Rescue Society administered blood to 431 patients. Of this total, 62.9% received blood carried on our aircraft. A total of 463 blood box units were administered, and the majority of patients (69.0%) received both units. Blood used in Calgary, Alberta was 100% traceable, and only 1.2% of total units dispensed was wasted. The vast majority of unused units were returned to circulation.ConclusionWe describe the process to set up and monitor a prehospital blood transfusion program. Our standard work and stewardship processes minimize wastage of blood while keeping it readily available for our critically ill and injured patients.

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