• Elinore J Kaufman, Ashkan Ertefaie, Dylan S Small, Daniel N Holena, and M Kit Delgado.
• Department of Surgery, New York-Presbyterian Weill Cornell Medicine, New York, NY. Electronic address: ejk9003@nyp.org.
• J. Am. Coll. Surg. 2018 May 1; 226 (5): 741-751.e2.

BackgroundHead injury is an increasing contributor to death and disability, particularly among the elderly. Older patients are less likely to be treated at trauma centers, and head injury is the most common severe injury treated at non-trauma centers. We hypothesized that patients initially triaged to trauma centers would have lower rates of mortality and higher rates of discharge home without services than those treated at non-trauma centers.Study DesignWe used the State Emergency Department and Inpatient Databases (2011 to 2012) for 6 states to conduct a retrospective cohort study of patients with severe, isolated head injury. Combined, these databases capture all visits to non-federal emergency departments. We compared in-hospital mortality and discharge status for all adults and for the subgroup aged 65 years or older who initially presented to either a trauma center or a neurosurgery-capable non-trauma center. To account for selection bias, we used differential distance from patients' homes to a trauma center as an instrumental variable and performed a multivariable matched analysis.ResultsOf 62,198 patients who presented with severe, isolated head injury, 44.2% presented to non-trauma centers and 55.8% to trauma centers. In multivariable matched instrumental variable analysis, initial presentation to a trauma center was associated with no significant difference in overall mortality (-1.06%; 95% CI -3.36% to 1.19%), but a 5.8% higher rate of discharge home (95% CI 1.7% to 10.0%). Among patients aged 65 years or older, initial presentation to a trauma center was associated with a 3.4% reduction in mortality (95% CI 0.0% to 7.1%).ConclusionsPatients with isolated, severe head injury have better outcomes if initially treated in designated trauma centers. As 40% of such patients were triaged to non-trauma centers, there are major opportunities for improving outcomes.Copyright © 2018 American College of Surgeons. Published by Elsevier Inc. All rights reserved.

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