Dexmedetomidine infusions and phenobarbital in the treatment of an unusual presentation of benzodiazepine-resistant alcohol withdrawal

Abstract

Background: Alcohol withdrawal is a life-threatening condition characterized by a myriad of physiologic changes including tachycardia, hypertension, lowered seizure threshold, hallucinations, and potential for delirium tremens. Benzodiazepines remain the gold standard for treatment of alcohol withdrawal, although few studies have compared barbiturates to benzodiazepines as first-line treatment. Methods: This study is a single patient chart review. Results: Over the course of his hospital stay, in addition to receiving a continuous infusion of dexmedetomidine, the patient received a total of 389 mg lorazepam, 650 mg phenobarbital, 40 mg haloperidol, 25 mg quetiapine, 5 mg midazolam, and 75 mg diphenhydramine. Conclusion: Phenobarbital is an effective first line agent for management of alcohol withdrawal and may be a safer and more effective treatment with lower rates of intubation and shorter hospital stays than benzodiazepines. It is particularly successful in patients who require high doses of benzodiazepines or ICU admission. Furthermore, the role of dexmedetomidine infusions in alcohol withdrawal remains unclear but may play a critical role in mitigating tachycardia and hypertension though it poses a risk of bradycardia and hypotension. Keywords: Alcohol withdrawal, Dexmedetomidine, Precedex, Phenobarbital, Ativan, Lorazepam, CIWA, GABA channel.