Citation

Miller KJ, Ivins BJ, Schwab KA. J. Head Trauma Rehabil. 2013; 28(1): 31-38.

Affiliation

Defense and Veterans Brain Injury Center, Rockville, Maryland (Ms Miller, Mr Ivins, and Dr Schwab); and Department of Neurology, Uniformed Services University of the Health Sciences, Bethesda, Maryland (Dr Schwab).

Copyright

(Copyright © 2013, Lippincott Williams and Wilkins)

DOI

10.1097/HTR.0b013e318255ceae

PMID

22647963

Abstract

OBJECTIVE:: To investigate the potential cumulative impact of mild traumatic brain injury (MTBI) on postconcussive symptoms. PARTICIPANTS:: A total of 224 active duty soldiers reporting MTBI within 1 year of testing. For 101, this MTBI was their only reported traumatic brain injury (TBI); 123 had sustained at least 1 additional MTBI during their lifetime. A No TBI control group (n = 224) was included for comparison. MAIN MEASURE:: Self-report symptoms data via questionnaire. Within time since injury subgroups (≤3 months; Post-3 months), symptom endorsement (no symptoms, 1 or 2 symptoms, 3+ symptoms) among soldiers with 1 MTBI was compared with that of soldiers with 2 or more MTBIs. Injured soldiers' symptom endorsement was compared with that of soldiers who had not sustained a TBI. RESULTS:: Among the recently injured (≤3 months), those with 2 or more MTBIs endorsed significantly more symptoms than those with 1 MTBI: 67% of soldiers with 2 or more MTBIs reported 3+ symptoms, versus 29% of One MTBI soldiers. Among Post-3 month soldiers, there were no significant differences between MTBI groups. Overall, soldiers with MTBI endorsed significantly more symptoms than those without TBI. CONCLUSION:: Past experience of MTBI may be a risk factor for increased symptom difficulty for several months postinjury. Clinicians should ascertain lifetime history of brain injury when evaluating patients for MTBI.

Language: en