Research Reports - Neurologically-related sequelae associated with mild traumatic brain injury

Brain Inj. 2014 Dec 26:1-8

Webb TS(1), Whitehead CR, Wells TS, Gore RK, Otte CN

Abstract Objective: Mild traumatic brain injury (mTBI) accounts for more than 75%
of traumatic brain injuries every year. This study examines the temporal
association between non-blast mTBI and the onset of neurologic sequelae to
illuminate risks of post-concussive syndrome, epilepsy and chronic pain. Methods:
A large historical prospective study was conducted utilizing
electronically-recorded demographic, medical and military-specific data for over
half a million active duty US Air Force Airmen. This study utilized diagnostic
codes to identify mTBI exposures, two control groups and three post-mTBI time
periods. Adjusted hazard ratios (HRs) were calculated using Cox proportional
hazards modelling. Results: HRs were higher when mTBI exposed Airmen were
compared with the full cohort and lower when compared with the other injured
group. When compared to the other injured group, mTBI was positively associated
with epilepsy/recurrent seizure outcomes, post-concussive syndrome and pain
disorders. HRs tended to be highest within the first 30 days and decreased over
time. Conclusions: Findings support that mTBI may have a prolonged neurological
impact. Findings are also likely generalizable to young adult populations with
exposure to non-blast related mTBI, including civilians, as those included in
this study were young adults with a high prevalence of recreational/sports and
motor vehicle injuries.

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