• M V Purvis, H Rooks, J Young Lee, S Longerich, and S A Kahn.
• Department of Surgery, The University of South Alabama Medical Center, Mobile, USA.
• Ann Burns Fire Disasters. 2017 Jun 30; 30 (2): 126-128.

AbstractPrehospital use of hydroxocobalamin as an antidote for cyanide toxicity, a serious complication of smoke inhalation, has yet to be universally adopted in the United States though its efficacy and safety have been demonstrated since 2006. The purpose of this study was to characterize practices of prehospital hydroxocobalamin administration via a survey of emergency medical services (EMS) and to report a case series from an EMS database to track use of hydroxocobalamin. The Fire Smoke Coalition Newsletter emailed a voluntary survey to EMS subscribers regarding hydroxocobalamin use. Survey responses were analyzed in addition to survival data from the Smoke Inhalation Treatment Database (SITD), a publically available, self-reported, online database for EMS regarding smoke inhalation patient outcomes. Analysis was compared to current published data from PubMed. The survey had a 14% response rate (284/2000). Only 38% reported prehospital utilization of a hydrogen cyanide antidote with 46% using hydroxocobalamin. 20% of responders reported a formal ALS protocol was in place for hydroxocobalamin use. For the SITD, 12 of 13 (92%) patients who received hydroxocobalamin for suspected inhalation survived. Other studies found a survival rate of 72% and 42% after administration of hydroxocobalamin for smoke inhalation. Prehospital administration of hydroxocobalamin for cyanide toxicity is uncommon in the United States, as evidenced by this analysis, despite well-documented safety and efficacy. Although a small sample, patients who received prehospital hydroxocobalamin had improved survival. This survival rate is significantly greater than those reported previously.

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