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  • Title: Characterization of acute stress reaction following an IED blast-related mild traumatic brain injury.
    Author: Norris JN, Smith S, Harris E, Labrie DW, Ahlers ST.
    Journal: Brain Inj; 2015; 29(7-8):898-904. PubMed ID: 25955118.
    Abstract:
    PRIMARY OBJECTIVE: To characterize an acute stress reaction (ASR) following an improvised explosive device (IED) blast-related mild traumatic brain injury (mTBI). RESEARCH DESIGN: Participants were male, US military personnel treated in Afghanistan within 4 days following an IED-related mTBI event (n = 239). METHODS AND PROCEDURES: Demographics, diagnosis of ASR, injury history and self-reported mTBIs, blast exposures and psychological health histories were recorded. MAIN OUTCOMES AND RESULTS: In total, 12.5% of patients met ASR criteria. Patients with ASR were significantly younger and junior in rank (p < 0.05). Patients with ASR were more likely to experience the IED-blast while dismounted, report a loss of consciousness (LOC) and higher pain levels (p < 0.05). Adjusting for age and rank, multivariate logistic regression showed an association between mTBI history and ASR (AOR = 1.405; 95% CI = 1.105-1.786, p < 0.01). Adjusting for mechanism of injury (dismounted vs. mounted), LOC and pain, multivariate logistic regression showed an association between mTBI history and ASR (AOR = 1.453; 95% CI = 1.132-1.864, p < 0.01). Prior blast exposure and past psychological health issues were not associated with ASR. CONCLUSIONS: A history of multiple mTBIs is associated with increased risk of ASR. Future research is warranted.
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