Hidden hearing deficits in military service members with persistent post concussive symptoms

2019 ◽  
pp. 251-260
Author(s):  
Anna Meehan ◽  
◽  
Donald Hebert ◽  
Kayla Deru ◽  
Lindell K. Weaver ◽  
...  
Keyword(s):  
Hearing Loss ◽  
Brain Injury ◽  
Auditory Processing ◽  
Military Service ◽  
Service Members ◽  
Central Auditory Processing ◽  
Persistent Symptoms ◽  
Military Service Members ◽  
Brainstem Response ◽  
Interpeak Latency

Introduction: Individuals with persistent symptoms after mild traumatic brain injury (mTBI) often have auditory complaints. In this study, we used the auditory brainstem response (ABR) to determine whether cochlear synaptopathy could explain auditory symptoms. Methods: 69 adult military service members with mTBI and 25 adults without brain injury (NCT01611194 and NCT01925963) completed pure-tone audiometry, ABR, and central auditory processing tests. All participants were male, ages 21-50. Results: 37/69 mTBI participants had measurable hearing loss, while another 20-30% had hearing complaints or tinnitus. While mTBI participants with measurable hearing loss had reduced wave I and III amplitude and decreased III-V interpeak latency, those with no measurable hearing loss did not significantly differ from controls on any ABR parameter. Those with measurable hearing loss were also more likely to have abnormal central auditory processing. mTBI participants with no measurable hearing loss but who reported hearing concerns had some ABR findings (III-V interpeak latency, I and V amplitudes, V/I amplitude ratio) more like the measurable hearing loss mTBI group than normative controls. Conclusion: Cochlear synaptopathy may have contributed to some of the auditory impairment in service members with mTBI with measurable hearing loss. However, these results are likely confounded by cochlear hair cell damage.

Prospective study of anxiety, post-traumatic stress and depression on postural control, gait, otolith and visuospatial function in military service members with persistent post-concussive symptoms

2019 ◽  
pp. 271-287
Author(s):  
◽  
Andrew Lewandowski ◽  
Lindell K. Weaver ◽  
◽  
◽  
...  
Keyword(s):  
Brain Injury ◽  
Postural Control ◽  
Traumatic Stress ◽  
Military Service ◽  
Service Members ◽  
Post Traumatic Stress ◽  
High Anxiety ◽  
Affective Symptoms ◽  
Military Service Members ◽  
Post Traumatic

Purpose: Military service members often report both affective and vestibular complaints after mild traumatic brain injury (mTBI), but associations between symptoms and vestibular deficits can be subtle and inconsistent. Methods: From two complementary studies, one of military service members with persistent post-concussive symptoms after mTBI (NCT01611194) and the other of adult volunteers with no history of brain injury (NCT01925963), affective symptoms were compared to postural control, gait, otolith and visuospatial function. Results: The studies enrolled 71 participants with mTBI and 75 normative controls. Participants with mTBI had significantly reduced postural equilibrium on the sensory organization test (SOT), and more so in those with high anxiety or post-traumatic stress. Cervical and ocular vestibular evoked myogenic potentials (cVEMP; oVEMP) showed prolonged latencies in mTBI participants compared to controls; oVEMPs were significantly delayed in mTBI participants with high anxiety, post-traumatic stress or depression. A subset of the mTBI group had abnormal tandem gait and high anxiety. Anxiety, posttraumatic stress, and depression did not correlate with performance on the 6-Minute Walk Test, visuospatial neuropsychological measures, and the Satisfaction with Life Scale in the mTBI group. Conclusions: In this study military service members with mTBI reported affective symptoms, concurrently with vestibular-balance concerns. Worse scores on affective measures were associated with abnormal findings on measures of postural control, gait and otolith function.

Cognitive Rehabilitation for Military Service Members With Mild Traumatic Brain Injury

2017 ◽  
Vol 32 (3) ◽  
pp. E1-E15 ◽  
Author(s):  
Douglas B. Cooper ◽  
Amy O. Bowles ◽  
Jan E. Kennedy ◽  
Glenn Curtiss ◽  
Louis M. French ◽  
...  
Keyword(s):  
Traumatic Brain Injury ◽  
Brain Injury ◽  
Mild Traumatic Brain Injury ◽  
Military Service ◽  
Cognitive Rehabilitation ◽  
Service Members ◽  
Military Service Members

Adversity and Resilience Are Associated with Outcome after Mild Traumatic Brain Injury in Military Service Members

2018 ◽  
Vol 35 (10) ◽  
pp. 1146-1155 ◽  
Author(s):  
Matthew W. Reid ◽  
Douglas B. Cooper ◽  
Lisa H. Lu ◽  
Grant L. Iverson ◽  
Jan E. Kennedy
Keyword(s):  
Traumatic Brain Injury ◽  
Brain Injury ◽  
Mild Traumatic Brain Injury ◽  
Military Service ◽  
Service Members ◽  
Military Service Members

scholarly journals A-116 Predicting Chronic Neurobehavioral Symptoms based on Acute Injury Characteristics and Symptoms in U.S. Military Service Members with and without history of TBI

2020 ◽  
Vol 35 (6) ◽  
pp. 909-909
Author(s):  
Lippa S ◽  
Bailie J ◽  
Brickell T ◽  
French L ◽  
Hungerford L ◽  
...  
Keyword(s):  
Traumatic Brain Injury ◽  
Brain Injury ◽  
Military Service ◽  
Service Members ◽  
Injury Characteristics ◽  
Military Service Members ◽  
History Of ◽  
Neurobehavioral Symptoms ◽  
Severe Tbi

Abstract Objective Recovery following traumatic brain injury (TBI) is complex. Often following mild TBI, recovery occurs within days or weeks, though this is not always the case. Following more severe TBI, some recover quickly, while many never fully recover. This study examines acute predictors of chronic neurobehavioral symptoms in U.S. military service members (Age: M = 33.9 years, SD = 10.2) without injury (n = 86), or with history of uncomplicated mild traumatic brain injury (TBI; n = 56), complicated mild, moderate, or severe TBI (mod-sev TBI; n = 43), or bodily injury (n = 25). Method Participants completed the Neurobehavioral Symptom Inventory (NSI), Posttraumatic Stress Disorder Checklist, Alcohol Use Disorder Checklist, Combat Exposure Scale, and TBI Quality of Life and passed symptom validity tests at 0–8 months and ≥ 2 years post-injury. Forward stepwise logistic regression included 26 potential predictors (demographics, injury characteristics, military characteristics, and self-report measures at baseline) of International Statistical Classification of Diseases and Related Health Problems-10 Postconcussional Syndrome (PCSy) at follow-up. Results Cognitive Concerns (Exp(B) = .896, p = .001), Sleep (Exp(B) = 1.874, p < .001), Somatosensory Symptoms (Exp(B) = 1.194, p = .012), and mod-sev TBI (Exp(B) = 2.959, p = .045) significantly predicted follow-up PCSy. When baseline NSI symptoms were removed from the model, Cognitive Concerns (Exp(B) = .902, p < .001), Post-traumatic stress (Exp(B) = 1.173, p = .001), and Resilience (Exp(B) = .950, p < .031) significantly predicted PCSy. For all included measures in both models, higher symptoms at baseline predicted increased likelihood of follow-up PCSy. Both models correctly classified 81.3% of participants. Conclusion Findings suggest patients reporting psychological distress and cognitive concerns acutely should be targeted for treatment to mitigate prolonged neurobehavioral symptoms.

Longitudinal evaluation of ventricular volume changes associated with mild traumatic brain injury in military service members

Brain Injury ◽  
2018 ◽  
Vol 32 (10) ◽  
pp. 1244-1254 ◽  
Author(s):  
Nicholas D. Davenport ◽  
James T. Gullickson ◽  
Scott F. Grey ◽  
Shawn Hirsch ◽  
Scott R. Sponheim ◽  
...  
Keyword(s):  
Traumatic Brain Injury ◽  
Brain Injury ◽  
Mild Traumatic Brain Injury ◽  
Military Service ◽  
Ventricular Volume ◽  
Service Members ◽  
Volume Changes ◽  
Longitudinal Evaluation ◽  
Military Service Members
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