• Hugo Langlois, Monique Cormier, Eric Villeneuve, Robert S Hoffman, Cristina Longo, and Sophie Gosselin.
• Pharmacy Department, McGill University Health Centre, Montreal, QC.
• Can J Emerg Med. 2020 Mar 1; 22 (2): 165-169.

ObjectivesAlthough alcohol withdrawal is common, the recognition of benzodiazepine-resistant alcohol withdrawal is a relatively new concept. To provide a framework for both literature review and future research, we assessed clinicians' personal definition of resistant alcohol withdrawal.MethodWe developed a cross-sectional web-based survey. Administrators from collaborating toxicology and emergency medicine associations deployed the survey directly to their respective memberships. Only physicians, pharmacists, and other clinicians routinely treating alcohol withdrawal were eligible to participate. Respondents selected their preferred definition among the three most common author sources - JB Hack, NJ Benedict, D Hughes - or provided their own. Additional criteria to define resistant alcohol withdrawal were explored.Results384 individuals answered the survey. Respondents were mostly attending physicians (79%), in full-time practice (90%), in emergency medicine (70%), and from North America (90%). The majority (64%) described resistant alcohol withdrawal as a high benzodiazepine dosage. Seizures (26%) and persistent tachycardia (16%) were also main characteristics. The median dose to describe high benzodiazepine dose (n = 146) was 40 mg per hour of diazepam equivalents (IQR 20-50). Available definitions were ranked equally as the preferred one: Hack (27%); Benedict (28%); Hughes (28%).ConclusionOur results did not identify one single preferred definition for resistant alcohol withdrawal even though a high total dose of benzodiazepine is a major component. Hourly requirements of 40 mg of diazepam equivalents or more emerged as a possible threshold. These findings serve as a base to explore consensus guidelines or future research.

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