Abstract
Up to 30% of trauma patients experience alcohol withdrawal syndrome (AWS) during their hospital admission, which is associated with worse outcomes. While benzodiazepines and phenobarbital are the mainstay of AWS management, there are limited data on the prevention of AWS. The objective was to evaluate the safety and efficacy of phenobarbital for the prevention of AWS. Adult patients admitted to a level 1 trauma center who received at least one dose of phenobarbital for the prevention of AWS between January 2019 and August 2021 were included. Patients were case matched to a control group managed with symptom-triggered therapy based on risk of AWS. Risk factors included sex, age, history of AWS/delirium tremens or withdrawal seizures, selected laboratory values, and screening questionnaires. The primary endpoint was the need for rescue therapy. Secondary endpoints included the time to rescue therapy, intensive care unit (ICU) length of stay (LOS), and hospital LOS. Overall, 110 patients were included with 55 patients in each group. The phenobarbital group had higher baseline Injury Severity Scores ( p = 0.03) and were more likely to be admitted to the ICU (44% vs. 24%; p = 0.03). The phenobarbital group required less rescue therapy (16% vs. 62%; p < 0.001) with a longer time to rescue therapy administration (26 vs. 11 hours; p = 0.01). The phenobarbital group had a longer hospital LOS (216 vs. 87 hours; p = 0.0001) but no difference in ICU LOS ( p = 0.36). There was no incidence of delirium tremens or seizures and no difference in intubation rates ( p = 0.68). There was no incidence of hypotension associated with phenobarbital. Patients managed with phenobarbital had a lower need for rescue therapy for AWS with no increased adverse effects. Further studies should evaluate a protocol to prevent alcohol withdrawal in the trauma population. Therapeutic/Care Management; Level III.
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