Blunt Adrenal Injury is Not Associated With Worse Outcomes in Adult Trauma Patients.

INTRODUCTION: Blunt adrenal injury is rare. Given production of hormones including catecholamines, adrenal injury may lead to worse outcomes. However, there is a paucity of literature on this topic. As such, we compared blunt trauma patients (BTPs) with and without adrenal injuries, hypothesizing similar mortality and complications between cohorts.

METHODS: The 2017-2019 Trauma Quality Improvement Program database was queried for adult (≥18-year-old) BTPs. Patients with penetrating trauma, traumatic brain injury, severe thoracic injury, or who were transferred from another hospital were excluded. Patients with adrenal injury were compared to those without using a 1:2 propensity score model. Matched variables included patient age, comorbidities, vitals on admission and concomitant injuries (i.e., liver, spleen, kidney, pancreas, and hollow viscus). Univariable logistic regression was then performed for associated risk of mortality.

RESULTS: 2287 (0.2%) BTPs had an adrenal injury, with 1470 patients with adrenal injury matched to 2940 without adrenal injury. The rate of all complications including sepsis (0.1% versus 0.0%) was similar between cohorts (all P > 0.05). Patients with adrenal injury had a lower rate of mortality (0.1% versus 0.6%, P = 0.035) but increased length of stay (4 [3-6] versus 3 [2-5] days, P = 0.002). However, there was no difference in associated risk of mortality for patients with and without adrenal injury (odds ratio = 0.234; confidence interval = 0.54-1.015; P = 0.052).

CONCLUSIONS: Blunt adrenal injury occurred in <1% of patients. After propensity matching, there was a similar associated rate of complications but longer hospital length of stay for patients with adrenal injury. Adrenal injury was not associated with an increased risk of mortality.