• Sarthak Sinha, Kyle Ricord, Patricia Harasym, Jeff A Biernaskie, Duncan Nickerson, and Vincent A Gabriel.
• Affiliations: Departments of Clinical Neurosciences, Pediatrics and Surgery (Sinha, Ricord, Harasym, Gabriel, Nickerson), Faculty of Medicine, University of Calgary; Department of Comparative Biology and Experimental Medicine (Sinha, Harasym, Biernaskie), Faculty of Veterinary Medicine, University of Calgary; Calgary Firefighters Burn Treatment Society (Nickerson, Gabriel), Calgary, Alta.
• CMAJ Open. 2018 Jan 18; 6 (1): E39-E43.

BackgroundThe increasing consideration of cannabis legalization in Canada and the United States has motivated physicians to assess its prospective impact on the health care system. Health care providers in the burns community are concerned about injuries sustained as a result of the illegal manufacturing of cannabis oil because it involves highly flammable reagents.MethodsWe report a retrospective case series of patients with cannabis oil burns (identified by evidence of combustion during cannabis oil manufacturing) treated from April 2012 to March 2014 at the Foothills Medical Centre in Calgary, Alberta, Canada. We compare the characteristics of these patients with those of patients admitted over the same period with any burns.ResultsWe found that 12 (out of 161 patients) admitted over the review period sustained burns from cannabis oil manufacturing. Compared with patients in the total burn group, patients with cannabis oil burns were younger (75% and 48% were younger than 41 years in the group with cannabis oil burns and the total burn group, respectively), were more likely to be male (83% in the group with cannabis oil burns v. 74% in the total burn group) and sustained burns over a larger percentage of their total body surface area (24% v. 9%). Patients with cannabis oil burns also required extensive surgical management (skin grafting in 75% of cases) and spent a substantial amount of time (mean 32 d) in the burn unit.InterpretationBurns from illegal cannabis oil manufacturing are large, require extensive management and involve younger patients than burns in general. Given that the frequency of cannabis oil burns may increase in Canada after legalization, Canadian burn centres are encouraged to monitor and report on cases with this injury mechanism.Copyright 2018, Joule Inc. or its licensors.

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