Vital signs among emergency department trauma patients in the setting of alcohol or drug use

Abstract

IntroductionThe incidence of alcohol use among trauma patients has been estimated at 19–55%. This study was undertaken to identify any relationship between vital signs and alcohol and drug use among Emergency Department (ED) patients with trauma. MethodsIn this retrospective case control study, eligible subjects included trauma patients ages 18 and over, with trauma and drug or alcohol use, between 2018 and 2022. The control group was comprised of trauma patients ages 18 and over, with trauma and no drug or alcohol use, who were matched by Injury Severity Score (ISS). Vital signs on ED arrival were compared among patients with and without alcohol use, and with and without recreational drug use. ResultsAmong 16,159 eligible trauma subjects, 5,323 had tests available for drugs and alcohol of whom 2,750 had complete ISS and vital signs data. 684 subjects were identified with alcohol intoxication, 707 subjects were identified with recreational drug use. Patients with alcohol use had lower mean systolic blood pressure (Mean=133, SD=26.7), compared to patients without alcohol use (Mean=143, SD=29.4) (p < 0.001). Patients with alcohol use had higher mean heart rate (Mean=93, SD=19.9) compared to patients without alcohol use (Mean=91, SD=19.7) (p = 0.01). Patients with recreational drug use had lower mean systolic blood pressure (Mean=137, SD=28.5) compared to patients without drug use (Mean=143, SD=29.6) (p < 0.001). Patients with drug use had higher mean heart rate (Mean=94, SD=22.8), compared to patients without drug use (Mean=91, SD=20.0) (p = 0.002). Cannabinoids were associated with lower SBP (Case Mean=136 (25.4) vs. Control Mean=141 (31.0), p = 0.009). Opioids were associated with lower SBP (Case Mean=138 (28.0) vs. Control Mean=145 (29.4), p = 0.01). Benzodiazepines were associated with increased HR and decreased SBP and RR. ConclusionsThere appear to be no clinically relevant differences in vital signs among trauma patients with drug use and/or alcohol use, compared to patients without drug or alcohol use. Abnormal vital signs should not be prematurely attributed solely to acute substance intoxication before fully evaluating for associated traumatic injuries.