• J Emerg Med · Jul 2019

    Case Reports

    Hemorrhagic Soft Tissue Upper Airway Obstruction From Brodifacoum-Contaminated Synthetic Cannabinoid.

    • Christopher H Ross, Parvinder Singh, and Erin L Simon.
    • Department of Emergency Medicine, Mercyhealth Wisconsin and Illinois, Rockford Memorial Hospital, Rockford, Illinois.
    • J Emerg Med. 2019 Jul 1; 57 (1): 47-50.

    BackgroundMore than 60 types of cannabinoids are found in nature; the remaining are chemically synthesized analogs of natural cannabinoids. Synthetic cannabinoids were first reported in the United States in 2008. These compounds are usually smoked by users and are sold under various names. Synthesized products have clinical effects that are similar to the effects of cannabis, which include tachycardia, conjunctival injection, nystagmus, vomiting, and ataxia. In cases of acute overdose, hyperthermia, acute kidney injury, seizures, and rhabdomyolysis can occur.Case ReportDeaths and life-threatening coagulopathies caused by brodifacoum (BDF) adulteration of synthetic cannabinoids have been reported in Illinois and other regions of the United States. BDF is a long-acting vitamin K-dependent antagonist that is often used as rat poison and that can cause massive hemorrhage. BDF is sometimes referred to as "superwarfarin" because the anticoagulant effect is 100 times greater than warfarin on a molar basis and its half-life is 20-130 days, which markedly exceeds that of warfarin. The rationale for lacing synthetic cannabinoids with BDF may be associated with attempts to enhance psychoactive effect of the drug, keeping the user high for a longer period of time because of lipid storage, hepatic metabolism, and slow release. We present the case of a healthy 27-year-old man who developed severe soft tissue hemorrhage and airway obstruction after use of a cannabinoid laced with BDF. WHY SHOULD AN EMERGENCY PHYSICIAN BE AWARE OF THIS?: To date there have been no case reports documenting severe soft tissue hemorrhage leading to airway obstruction and respiratory failure from synthetic cannabinoid use, whether or not the synthetic cannabinoid has been adulterated. Severe complications can arise from use, and treatment includes vitamin K and supportive therapy because the resulting coagulopathy can take days to weeks to resolve.Copyright © 2019 Elsevier Inc. All rights reserved.

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