Mild Severe Traumatic Brain Injury Research Articles

Revising the Pragmatics Profile of Everyday Communication Skills for traumatic brain injury: An international Delphi study.

Assessment tools that assess pragmatic skills in adults with a mild-severe traumatic brain injury (TBI) are hard to access, not person-centred and have a high risk of clinician bias. The Pragmatics Profile is an informant report tool that was originally designed to assess pragmatic skills in people with a developmental disability. The aim of this study was to seek consensus from a panel of experts and create a version of the Pragmatics Profile for the TBI population. A three-round modified Delphi methodology panel of 13 experts were invited to comment anonymously on the suitability of each question from the Pragmatics Profile modified for those with TBI until ≥ 80% agreement was reached. The Pragmatics Profile (TBI) included 66 questions that achieved consensus after three rounds of the Delphi panel. Qualitative analysis illuminated themes relating to adults with TBI and the need to include contextual factors. The outcome of this project was a revised version of the Pragmatics Profile which is suitable for adults with a mild-severe TBI, informed by experts and freely available online. Future research exploring the tool's utility and acceptability is the next step in its evaluation. What is already known on this subject Assessment of the everyday functional use of language is challenging but vital. This is particularly true for those who have traumatic brain injury (TBI) where the communication outcomes can be highly variable and may include difficulties with conversational turn-taking, topic maintenance and reading social cues. There are limited tools available to clinicians and those tend to be rating scales or checklists which have a high risk of clinician bias. Available tools have a limited ability to capture the individual's personal social communication goals. What this paper adds to existing knowledge This study created an online Pragmatics Profile (PP) for TBI based on experts' opinions. This paper details the themes that emerged during the process of revising the PP for those with TBI. What are the potential or actual clinical implications of this work? The PP-TBI adds to the toolkit for speech and language therapists working with people with TBI. It meets recent recommendations in the literature to create an interview-based tool. The versatility of an online tool combined with revised input from a panel of experts increases the likelihood that clinicians will utilise this tool. Given the long-term use of the original PP by clinicians for almost 30 years and a focus on personalised care, the format and approach are also likely to be acceptable to clinicians.

The dual reality of challenging behaviours: Overlapping and distinct perspectives of individuals with TBI and their caregivers

ABSTRACT Challenging behaviours significantly impact the lives of people with traumatic brain injury (TBI) and their family caregivers. However, these behaviours are rarely defined from the perspectives of both individuals, a necessary step to developing interventions targeting meaningful goals for individuals and caregivers. This study aimed to (1) explore and confirm the perspective of individuals with TBI living in the community and their family caregivers on behaviours they consider challenging and, (2) identify overlapping or distinct views on challenging behaviours. A qualitative descriptive design was used. Twelve caregivers (8 females; 59.67 ± 11.64 years old) and 14 participants with mild-severe TBI (6 females; 43.21 ± 10.98 years old; time post-injury: 21.71 ± 10.84 years) were interviewed (10 dyads and two triads). Data were analysed using inductive qualitative analysis. Challenging behaviours most frequently reported by all participants were aggressive/impulsive behaviours, inappropriate social behaviours, and behavioural manifestations of cognitive impairments. Overlapping perspectives were identified regarding aggressive behaviours. Distinctions exist as inappropriate social behaviours and cognitive difficulties were mainly reported by caregivers. Our results confirm that perspectives may vary between dyad members. Interventions should include dyad inputs to formulate goals that are significant to the person with TBI and their caregiver.

Association Between the Attention Network Test, Neuropsychological Measures, and Disability in Post-Acute Traumatic Brain Injury.

Cognitive impairment after traumatic brain injury (TBI) is persistent and disabling. Assessing cognitive function in a reliable and valid manner, using measures that are sensitive to the integrity of underlying neural substrates, is crucial in clinical research. The Attention Network Test (ANT) is one such assessment measure that has demonstrated associations with neural regions involved in attention; however, clinical utility of the ANT is limited because its relationship with neuropsychological measures of cognitive function (i.e., its construct validity) has not yet been established in TBI. We evaluated the association between the ANT and 1) a neuropsychological battery assessing executive function and memory and 2) global function assessed by the Glasgow Outcome Scale-Extended (GOSE). Forty-eight adults with complicated mild-severe TBI were evaluated ∼5 months post-injury. Using principal component analysis and multi-variate linear regression adjusted for age, gender, education, and cause of injury, we found that ANT reaction time and executive network scores predicted a principal component assessing processing speed and executive function. Conversely, the ANT did not predict a principal component assessing memory. The ANT was weakly associated with the GOSE. Among persons with TBI during the post-acute phase of recovery, the ANT has good construct validity as evidenced by its associations with neuropsychological measures of processing speed and executive function, but not memory. Given that ANT networks are known to relate to specific neuroanatomical regions, the ANT may be a useful outcome measure for evaluating novel therapeutics targeting attention and executive functions after TBI.

Assessment of the individual and compounding effects of marginalization factors on injury severity, discharge location, recovery, and employment outcomes at 1 year after traumatic brain injury.

ObjectiveThe aim of this study is to examine the effect of eight distinct marginalized group memberships and explore their compounding effect on injury severity, recovery, discharge location, and employment outcomes 1-year after traumatic brain injury (TBI).MethodsIndividuals with medically confirmed, complicated mild-severe TBI (N = 300) requiring inpatient rehabilitation care between the ages of 18 and 65 were recruited at two urban (public and private) health systems between 2013 and 2019. Data were collected from self-report and medical record abstraction. Marginalized group membership (MGM) includes racial and ethnic minority status, less than a high school diploma/GED, limited English proficiency, substance abuse, homelessness, psychiatric hospitalizations, psychiatric disorders, and incarceration history. Membership in four or more of these groups signifies high MGM. In addition, these factors were explored individually. Unadjusted and adjusted linear and logistic regressions and Kruskal–Wallis tests were used to assess the associations of interest in RStudio.ResultsAfter adjusting for age, sex, and cause of injury, compared to TBI patients with low MGM, those with high MGM experience significantly longer post-traumatic amnesia (95% CI = 2.70, 16.50; p = 0.007) and are significantly more likely to have a severe TBI (per the Glasgow-Coma Scale) (95% CI = 1.70, 6.10; p ≤ 0.001) than a complicated mild-moderate injury. Individuals with high MGM also are significantly less likely to be engaged in competitive paid employment 1 year after injury (95% CI = 2.40, 23.40; p = 0.001). Patients with high MGM are less likely to be discharged to the community compared to patients with low MGM, but this association was not significant (95% CI = 0.36, 1.16; p = 0.141). However, when assessing MGMs in isolation, certain associations were not significant in unadjusted or adjusted models.ConclusionThis exploratory study's findings reveal that when four or more marginalization factors intersect, there is a compounding negative association with TBI severity, recovery, and employment outcomes. No significant association was found between high MGM and discharge location. When studied separately, individual MGMs had varying effects. Studying marginalization factors affecting individuals with TBI has critical clinical and social implications. These findings underline the importance of addressing multidimensional factors concurrent with TBI recovery, as the long-term effects of TBI can place additional burdens on individuals and their economic stability.

Association of neurostructural biomarkers with secondary attention-deficit/hyperactivity disorder (ADHD) symptom severity in children with traumatic brain injury: a prospective cohort study.

Despite a well-established link between childhood traumatic brain injury (TBI) and elevated secondary attention-deficit/hyperactivity disorder (s-ADHD) symptomology, the neurostructural correlates of these symptoms are largely unknown. Based on the influential 'triple-network model' of ADHD, this prospective longitudinal investigation aimed to (i) assess the effect of childhood TBI on brain morphometry of higher-order cognitive networks proposed to play a key role in ADHD pathophysiology, including the default-mode network (DMN), salience network (SN) and central executive network (CEN); and (ii) assess the independent prognostic value of DMN, SN and CEN morphometry in predicting s-ADHD symptom severity after childhood TBI. The study sample comprised 155 participants, including 112 children with medically confirmed mild-severe TBI ascertained from consecutive hospital admissions, and 43 typically developing (TD) children matched for age, sex and socio-economic status. High-resolution structural brain magnetic resonance imaging (MRI) sequences were acquired sub-acutely in a subset of 103 children with TBI and 34 TD children. Parents completed well-validated measures of ADHD symptom severity at 12-months post injury. Relative to TD children and those with milder levels of TBI severity (mild, complicated mild, moderate), children with severe TBI showed altered brain morphometry within large-scale, higher-order cognitive networks, including significantly diminished grey matter volumes within the DMN, SN and CEN. When compared with the TD group, the TBI group showed significantly higher ADHD symptomatology and higher rates of clinically elevated symptoms. In multivariable models adjusted for other well-established risk factors, altered DMN morphometry independently predicted higher s-ADHD symptomatology at 12-months post-injury, whilst SN and CEN morphometry were not significant independent predictors. Our prospective study findings suggest that neurostructural alterations within higher-order cognitive circuitry may represent a prospective risk factor for s-ADHD symptomatology at 12-months post-injury in children with TBI. High-resolution structural brain MRI has potential to provide early prognostic biomarkers that may help early identification of high-risk children with TBI who are likely to benefit from early surveillance and preventive measures to optimise long-term neuropsychiatric outcomes.

Outcomes in Patients With Mild Traumatic Brain Injury Without Acute Intracranial Traumatic Injury

Traumatic brain injury (TBI) affects millions of people in the US each year. Most patients with TBI seen in emergency departments (EDs) have a Glasgow Coma Scale (GCS) score of 15 and a head computed tomography (CT) scan showing no acute intracranial traumatic injury (negative head CT scan), yet the short-term and long-term functional outcomes of this subset of patients remain unclear. To describe the 2-week and 6-month recovery outcomes in a cohort of patients with mild TBI with a GCS score of 15 and a negative head CT scan. This cohort study analyzed participants who were enrolled from January 1, 2014, to December 31, 2018, in the Transforming Research and Clinical Knowledge in Traumatic Brain Injury (TRACK-TBI) study, a prospective, observational cohort study of patients with TBI that was conducted in EDs of 18 level I trauma centers in urban areas. Of the total 2697 participants in the TRACK-TBI study, 991 had a GCS score of 15 and negative head CT scan and were eligible for inclusion in this analysis. Data were analyzed from September 1, 2021, to May 30, 2022. The primary outcome was the Glasgow Outcome Scale-Extended (GOS-E) score, which was stratified according to functional recovery (GOS-E score, 8) vs incomplete recovery (GOS-E score, <8), at 2 weeks and 6 months after the injury. The secondary outcome was severity of mild TBI-related symptoms assessed by the Rivermead Post Concussion Symptoms Questionnaire (RPQ) total score. A total of 991 participants (mean [SD] age, 38.5 [15.8] years; 631 male individuals [64%]) were included. Of these participants, 751 (76%) were followed up at 2 weeks after the injury: 204 (27%) had a GOS-E score of 8 (functional recovery), and 547 (73%) had a GOS-E scores less than 8 (incomplete recovery). Of 659 participants (66%) followed up at 6 months after the injury, 287 (44%) had functional recovery and 372 (56%) had incomplete recovery. Most participants with incomplete recovery reported that they had not returned to baseline or preinjury life (88% [479 of 546]; 95% CI, 85%-90%). Mean RPQ score was 16 (95% CI, 14-18; P < .001) points lower at 2 weeks (7 vs 23) and 18 (95% CI, 16-20; P < .001) points lower at 6 months (4 vs 22) in participants with a GOS-E score of 8 compared with those with a GOS-E score less than 8. This study found that most participants with a GCS score of 15 and negative head CT scan reported incomplete recovery at 2 weeks and 6 months after their injury. The findings suggest that emergency department clinicians should recommend 2-week follow-up visits for these patients to identify those with incomplete recovery and to facilitate their rehabilitation.

Evaluating a Novel Treatment Adapting a Cognitive Behaviour Therapy Approach for Sexuality Problems after Traumatic Brain Injury: A Single Case Design with Nonconcurrent Multiple Baselines.

There has been little progress in development of evidence-based interventions to improve sexuality outcomes for individuals with traumatic brain injury (TBI). This study aimed to evaluate the preliminary efficacy of an individualised intervention using a cognitive behaviour therapy (CBT) framework to treat sexuality problems after TBI. A nonconcurrent multiple baseline single-case design with 8-week follow-up and randomisation to multiple baseline lengths (3, 4, or 6 weeks) was repeated across nine participants (five female) with complicated mild–severe TBI (mean age = 46.44 years (SD = 12.67), mean post-traumatic amnesia = 29.14 days (SD = 29.76), mean time post-injury = 6.56 years (median = 2.50 years, SD = 10.11)). Treatment comprised eight weekly, individual sessions, combining behavioural, cognitive, and educational strategies to address diverse sexuality problems. Clinical psychologists adopted a flexible, patient-centred, and goal-orientated approach whilst following a treatment guide and accommodating TBI-related impairments. Target behaviour was subjective ratings of satisfaction with sexuality, measured three times weekly. Secondary outcomes included measures of sexuality, mood, self-esteem, and participation. Goal attainment scaling (GAS) was used to measure personally meaningful goals. Preliminary support was shown for intervention effectiveness, with most cases demonstrating sustained improvements in subjective sexuality satisfaction and GAS goal attainment. Based on the current findings, larger clinical trials are warranted.

Global and domain-specific self-esteem after pediatric traumatic brain injury: Contribution of injury characteristics and parent mental health

ABSTRACT This prospective, longitudinal case–control study examined global and domain-specific aspects of self-esteem 6-months following pediatric traumatic brain injury (TBI) and evaluated the contribution of injury-related factors and parent mental health to child self-esteem. Participants included 103 children with mild-severe TBI representing consecutive admissions to the emergency department of the Royal Children’s Hospital, Melbourne, Australia. Forty-three age-and-sex matched typically developing controls were recruited for comparison. Information regarding injury characteristics including age at injury and clinical indicators of TBI severity were collected for participants at recruitment, with research magnetic resonance imaging conducted 2–8 weeks later. At 6 months post-injury, children rated their global and domain-specific self-esteem (Harter Self-Perception Profile for Children), and ratings of parent mental health were collected (General Health Questionnaire). Self-esteem for behavioural and academic domains was significantly poorer for children with TBI relative to TD children. In the TBI group, higher child-rated scores of global and domain-specific aspects of self-esteem were associated with more severe TBI, presence of frontal neuropathology, younger age at injury, and lower parental symptoms of anxiety/insomnia. Given the psychological status of parents represents a potentially modifiable risk factor, it may form the target of clinical interventions designed to bolster child self-esteem following pediatric TBI.

Working Memory for Emotions in Adolescents and Young Adults with Traumatic Brain Injury.

This preliminary study investigated the interaction between working memory and social cognition in adolescents and young adults with traumatic brain injury (TBI). It was hypothesized that participants with or without TBI would better recognize social information when working memory or social cognitive load was low, and that adolescents and young adults with TBI would be more affected by increased cognitive demand than their uninjured peers. Eight adolescents and young adults with complicated mild-severe TBI (aged 14-22 years) and eight age- and sex-matched typically developing (TD) adolescents completed computer-based n-back tasks requiring recognition of either face identity or facial affect, with 0-back, 1-, and 2-back conditions. The TBI group had lower scores overall than the TD group, and scores for both groups were lower for affect recognition than identity recognition. Scores for both groups were lower in conditions with a higher working memory load. There was a significant group-by-working memory interaction, with larger group differences in high-working memory conditions. Study results and their potential implications for social outcomes are discussed.

Urinary metabolomic signatures as indicators of injury severity following traumatic brain injury: A pilot study.

BackgroundAnalysis of fluid metabolites has the potential to provide insight into the neuropathophysiology of injury in patients with traumatic brain injury (TBI).ObjectiveUsing a 1H nuclear magnetic resonance (NMR)-based quantitative metabolic profiling approach, this study determined (1) if urinary metabolites change during recovery in patients with mild to severe TBI; (2) whether changes in urinary metabolites correlate to injury severity; (3) whether biological pathway analysis reflects mechanisms that mediate neural damage/repair throughout TBI recovery.MethodsUrine samples were collected within 7 days and at 6-months post-injury in male participants (n = 8) with mild-severe TBI. Samples were analyzed with NMR-based quantitative spectroscopy for metabolomic profiles and analyzed with multivariate statistical and machine learning-based analyses.ResultsLower levels of homovanillate (R = −0.74, p ≤ 0.001), L-methionine (R = −0.78, p < 0.001), and thymine (R = −0.85, p < 0.001) negatively correlated to injury severity. Pathway analysis revealed purine metabolism to be a primary pathway (p < 0.01) impacted by TBI.ConclusionThis study provides pilot data to support the use of urinary metabolites in clinical practice to better interpret biochemical changes underlying TBI severity and recovery. The discovery of urinary metabolites as biomarkers may assist in objective and rapid identification of TBI severity and prognosis. Thus, 1H NMR metabolomics has the potential to facilitate the adaptation of treatment programs that are personalized to the patient’s needs.

Differences in Coping Strategies Between Women and Men Based on Experience of Frequent Pain/Headaches in Chronic Traumatic Brain Injury

<h3>Research Objectives</h3> To identify gender differences in coping strategies by experience of pain/headaches in chronic traumatic brain injury (TBI). <h3>Design</h3> Cross-sectional study. <h3>Setting</h3> Community. <h3>Participants</h3> n=133 adults with chronic mild-severe TBI (M=7.5 years post-injury). <h3>Interventions</h3> N/A. <h3>Main Outcome Measures</h3> Behavioral Assessment Screening Tool (BAST) coping items: two adaptive (asking someone I trust for help, going for a walk/exercising) and four avoidant (bought things I didn't need, took my emotions out on other people, unable to make decisions, went to sleep) rated on a 1=never to 5=very often ordinal scale. <h3>Results</h3> Two-thirds of women (52/78), 45% of men (23/54), and one individual (100%) identifying as transgender reported experiencing frequent pain/headaches. Almost all participants (n=130, 97.7%) felt stressed over the past two weeks. When stressed, men without pain (n=31) exercised/walked (M=3.14, SD=1.6) more often than men with pain (M=2.39, SD=1.03, p=.024) and women without pain (M=2.46, SD=1.25, p=.037). Women with pain engaged more frequently in maladaptive coping strategies (M=2.58-3.17) than women without pain (M=2.08-2.71). Women with pain bought things they did not need more often than all others (p's=.019- < .001) and went to sleep significantly more often than men with pain (p=.029) and women without pain (p=.003). <h3>Conclusions</h3> Individuals with chronic TBI frequently report feeling stressed, and many - particularly women - report experiencing frequent pain/headaches. Women experiencing pain/headaches after TBI engage in maladaptive coping more often than women without pain/headaches or men regardless of pain experience. However, they also walk/exercise to manage stress more than women without pain or men with pain, suggesting that women experiencing pain/headaches after chronic TBI may use more coping strategies - including both adaptive and maladaptive strategies - overall to manage their stress. Providers should emphasize the benefits of physical activity and social support after TBI. <h3>Author(s) Disclosures</h3> This work was supported by funding from the National Institutes for Health, Eunice Kennedy Shriver National Institute of Child Health and Human Development (NIH/NICHD). Grant #: R03HD09445 (PI: Juengst).

Executive function mediates the prospective association between neurostructural differences within the central executive network and anti-social behavior after childhood traumatic brain injury.

Despite increasing evidence of a link between early life brain injury and anti-social behavior, very few studies have assessed factors that explain this association in children with traumatic brain injury (TBI). One hypothesis suggests that childhood TBI elevates risk for anti-social behavior via disruption to anatomically distributed neural networks implicated in executive functioning (EF). In this longitudinal prospective study, we employed high-resolution structural neuroimaging to (a) evaluate the impact of childhood TBI on regional morphometry of the central executive network (CEN) and (b) evaluate the prediction that lower EF mediates the prospective relationship between structural differences within the CEN and postinjury anti-social behaviors. This study involved 155 children, including 112 consecutively recruited, hospital-confirmed cases of mild-severe TBI and 43 typically developing control (TDC) children. T1-weighted brain magnetic resonance imaging (MRI) sequences were acquired sub-acutely in a subset of 137 children [TBI: n=103; TDC: n=34]. All participants were evaluated using direct assessment of EF 6months postinjury, and parents provided ratings of anti-social behavior 12months postinjury. Severe TBI was associated with postinjury volumetric differences within the CEN and its putative hub regions. When compared with TD controls, the TBI group had significantly worse EF, which was associated with more frequent anti-social behaviors and abnormal CEN morphometry. Mediation analysis indicated that reduced EF mediated the prospective association between postinjury volumetric differences within the CEN and more frequent anti-social behavior. Our longitudinal prospective findings suggest that detection of neurostructural abnormalities within the CEN may aid in the early identification of children at elevated risk for postinjury executive dysfunction, which may in turn contribute to chronic anti-social behaviors after early life brain injury. Findings underscore the potential value of early surveillance and preventive measures for children presenting with neurostructural and/or neurocognitive risk factors.

Association of Optical Coherence Tomography With Longitudinal Neurodegeneration in Veterans With Chronic Mild Traumatic Brain Injury

Mild traumatic brain injury (TBI) may predispose individuals to progressive neurodegeneration. To identify evidence of neurodegeneration through longitudinal evaluation of changes in retinal layer thickness using optical coherence tomography in veterans with a history of mild TBI. This longitudinal cohort study evaluated veterans who were receiving services at the Minneapolis Veterans Affairs Health Care System. Symptomatic or mild TBI was diagnosed according to the Mayo TBI Severity Classification System. Participants in the age-matched control group had no history of TBI. Participants with any history or evidence of retinal or optic nerve disease that could affect retinal thickness were excluded. Data analysis was performed from July 2019 to February 2020. The presence and severity of mild TBI were determined through consensus review of self-report responses during the Minnesota Blast Exposure Screening Tool semistructured interview. Change over time of retinal nerve fiber layer (RNFL) thickness. A total of 139 veterans (117 men [84%]; mean [SD] age, 49.9 [11.1] years) were included in the study, 69 in the TBI group and 70 in the control group. Veterans with mild TBI showed significantly greater RNFL thinning compared with controls (mean [SE] RNFL slope, -1.47 [0.24] μm/y vs -0.31 [0.32] μm/y; F1,122 = 8.42; P = .004; Cohen d = 0.52). Functionally, veterans with mild TBI showed greater declines in visual field mean deviation (mean [SE] slope, -0.09 [0.14] dB/y vs 0.46 [0.23] dB/y; F1,122 = 4.08; P = .046; Cohen d = 0.36) and pattern standard deviation (mean [SE] slope, 0.09 [0.06] dB/y vs -0.10 [0.07] dB/y; F1,122 = 4.78; P = .03; Cohen d = 0.39) and high spatial frequency (12 cycles/degree) contrast sensitivity compared with controls. Cognitively, there was a significantly greater decrease in the number of errors over time during the Groton Maze Learning Test (GMLT) in controls compared with veterans with mild TBI (mean [SE] slope, -9.30 [1.48] errors/y vs -5.23 [1.24] errors/y; F1,127 = 4.43; P = .04; Cohen d = 0.37). RNFL tissue loss was significantly correlated with both worsening performance on the GMLT over time (Spearman ρ = -0.20; P = .03) and mild TBI severity (Spearman ρ = -0.25; P = .006). The more severe the mild TBI (larger Minnesota Blast Exposure Screening Tool severity score), the faster the reduction in RNFL thickness (ie, the more negative the slope) across time. This cohort study found longitudinal evidence for significant, progressive neural degeneration over time in veterans with mild TBI, as indicated by greater RNFL tissue loss in patients with mild TBI vs controls, as well as measures of function. These results suggest that these longitudinal measures may be useful biomarkers of neurodegeneration. Changes in this biomarker may provide early detection of subsequent cognitive and functional deficits that may impact veterans' independence and need for care.

Prevalence of 25-hydroxyvitamin D deficiency in the acute rehabilitation population following traumatic brain injury.

To determine the prevalence of vitamin D deficiency among individuals with traumatic brain injury (TBI) undergoing acute inpatient rehabilitation. Inpatient rehabilitation. Participants were admitted from November 1st, 2010 through June 30th, 2015 with diagnosis of mild-severe TBI and had serum 25 OH vitamin D levels checked upon admission. 369 out of 845 met inclusion. Retrospective cohort. 25 OH vitamin D, vitamin D treatment. The majority of patients were male (67%), Caucasian (89%) with private insurance (61%) and a mean age of 43.5±21.0 years. 25 OH vitamin D levels were categorized: deficient (<20 ng/mL), insufficient (20-29.9 ng/mL), and sufficient (≥30 ng/mL). There were 95 (26%) patients that were deficient, 131 (36%) that were insufficient, and 143 (39%) that were sufficient. Race/ethnicity was found to be significant (p = 0.0145) with the largest percentage of Hispanics found in the insufficient and deficient categories, and the largest percentage of Blacks in the deficient category. Most patients with deficient or insufficient vitamin D levels were prescribed vitamin D replacement during their rehab stay (p < 0.0001). The majority of patients undergoing acute inpatient rehabilitation were found to have insufficient or deficient vitamin D levels, therefore it should be routinely screened and treated as indicated.

Impact of baseline neurocognitive functioning on outcomes following rehabilitation of executive function training for veterans with history of traumatic brain injury

Traumatic brain injury (TBI) is common among Veterans, and sequelae frequently include deficits in attention and executive function and problems with emotional regulation. Although rehabilitation has been shown to be effective, it is not clear how patient characteristics such as baseline cognitive status may impact response to rehabilitation in this sample. Explore the relationship between baseline neuropsychological status and postintervention functional outcomes in Veterans with chronic TBI. Thirty-three Veterans with chronic mild–severe TBI completed a neuropsychological evaluation, a functional assessment of executive function (EF), and measures of emotional and everyday functioning pre- and post-EF training or control training. Performance on baseline neuropsychological measures was used to cluster participants. Participants’ performance at baseline and postintervention assessments was compared by cluster using multivariate analyses of variance (MANOVAs). Cognitive Difficulty (CD; n = 19) and Cognitively Normal (CN; n = 14) clusters were identified. CD was characterized by z ≤ −.75 on neuropsychological measures of overall attention/EF, working memory, and memory. CD participants performed worse on functional EF assessment and endorsed more PTSD symptoms and community integration problems, at baseline. CD participants improved post-EF training, but not control training, on neuropsychological and functional measures. CN participants did not show statistically significant improvement. For Veterans with chronic TBI, cognitive assessment can aid in identifying functional impairment and assist treatment planning. Cognitive rehabilitation training appears to be a beneficial treatment option for TBI patients with cognitive, emotional, and daily living difficulties.

Psychological Resilience Is Associated With Participation Outcomes Following Mild to Severe Traumatic Brain Injury.

Traumatic brain injury (TBI) causes physical and cognitive-behavioral impairments that reduce participation in employment, leisure, and social relationships. Demographic and injury-related factors account for a small proportion of variance in participation post-injury. Personal factors such as resilience may also impact outcomes. This study aimed to examine the association of resilience alongside demographic, injury-related, cognitive, emotional, and family factors with participation following TBI. It was hypothesized that resilience would make an independent contribution to participation outcomes after TBI. Participants included 245 individuals with mild-severe TBI [Mage = 44.41, SDage = 16.09; post traumatic amnesia (PTA) duration M 24.95 days, SD 45.99] who completed the Participation Assessment with Recombined Tools-Objective (PART-O), TBI Quality of Life Resilience scale, Family Assessment Device General Functioning Scale, Rey Auditory Verbal Learning Test, National Adult Reading Test, and Hospital Anxiety and Depression Scale an average 4.63 years post-injury (SD 3.02, R 0.5–13). Multiple regression analyses were used to examine predictors of PART-O scores as the participation measure. Variables in the model accounted for a significant 38% of the variability in participation outcomes, F(13, 211) = 9.93, p < 0.05, R2 = 0.38, adjusted R2 = 0.34. Resilience was a significant predictor of higher participation, along with shorter PTA duration, more years since injury, higher education and IQ, and younger age. Mediation analyses revealed depression mediated the relationship between resilience and participation. As greater resilience may protect against depression and enhance participation this may be a focus of intervention.

Postconcussion Symptom Reporting After Mild Traumatic Brain Injury in Female Service Members: Impact of Gender, Posttraumatic Stress Disorder, Severity of Injury, and Associated Bodily Injuries

Examine effects of diagnostically relevant posttraumatic stress disorder (PTSD) symptoms, mild traumatic brain injury (TBI) severity, and associated bodily injury severity on postconcussion symptom reporting in female service members (SM) compared with a matched sample of male SM. Six US military medical treatment facilities. A total of 158 SM (79 females, 79 males) evaluated within 30 months after mild TBI. Men and women were matched by age, days postinjury, PTSD symptom status, mild TBI severity, and bodily injury severity. All passed a measure of symptom validity. Compare reported postconcussion symptoms for men and women stratified by PTSD diagnostic symptoms (present/absent), mild TBI severity (alteration of consciousness/loss of consciousness), and bodily injury severity (mild/moderate-severe). Neurobehavioral Symptom Inventory, PTSD Checklist, Abbreviated Injury Scale. Overall postconcussion symptom reporting increased with PTSD but did not significantly differ based on severity of mild TBI or associated bodily injury. Females reported more somatosensory and/or vestibular symptoms than males under some circumstances. Females in the PTSD-Present group, Alteration of Consciousness Only group, and Moderate-Severe Bodily Injury group reported more somatosensory symptoms than males in those groups. Females in the Alteration of Consciousness Only group and Minor Bodily Injury group reported more vestibular symptoms than males in those groups. Diagnostically relevant PTSD symptoms, mild TBI severity, and bodily injury severity differentially impact somatosensory and vestibular postconcussion symptom reporting for male and female SM after mild TBI. Controlling for PTSD and symptom validity resulted in fewer gender-based differences in postconcussive symptoms than previously demonstrated in the literature.

Do Mild Traumatic Brain Injury Severity Sub-classification Systems Help to Identify People Who Go on to Experience Long-Term Symptoms?

Objective: To identify the systems available to sub-classify mild traumatic brain injury (TBI) and to determine their utility in predicting 1-year outcome.Methods: A systematic review to identify mild-TBI sub-classification systems was conducted until March 2016. The identified systems were applied to a cohort ofN= 290 adults who had experienced a mild-TBI, and who had been assessed for post-concussion symptoms 1-year post injury. ANOVAs and regression models were used to determine whether each sub-classification system could distinguish between outcomes and to explore their contribution to explaining variance in post-concussion symptoms 1-year post injury.Results: Nineteen sub-classification systems for mild-TBI met the inclusion criteria for this review. The Saal (1991) classification system significantly differentiated the experience of post-concussion symptoms in our cohort 1-year post injury (F= 2.39,p= 0.05). However, the findings did not remain significant following correction for multiple comparisons and inclusion of socio-demographic and contextual factors in the regression model.Conclusions: Current sub-classification systems fail to explain much of the variance in post-concussion symptoms 1 year following mild-TBI. Further research is needed to identify the factors (including socio-demographic and contextual factors) to determine, who may be at risk of developing persistent post-concussion symptoms.

Traumatic brain injury as psychosis development factor

IntroductionThe pathophysiology of psychosis is not fully discovered yet. However, during the last years many different risk factors are shown to prove to have a strong influence within the development of this pathology. Traumatic brain injury (TBI) is one of them.ObjectivesShow TBI as a psychosis development risk factor.MethodsCase report. A clinical vignette is presented followed by the results obtained in a bibliographic review.ResultsA young 19-year old immigrant man, who lives with his parents in a social exclusion situation is brought to the hospital after having been observed making estrange religious rituals within a local river. During the anamnese he declares that God is “getting in touch with him” while he shows to be changed, with suspicion about being pursued. He also reveals to have suffered a mild-severe TBI with 8 years, having right ear audition problems since then. During the hospitalization some medical test were done, such as MRI, showing the lack of the inner right ear, as well as white matter abnormalities in his right hemisphere, which could be consequence of the TBI. Those findings make us think that this pathology might have been influenced, within other factors, by the traumatic brain injury.ConclusionsThis bibliographic review shows that traumatic brain injury may increase the risk of developing psychosis up to 65% from healthy controls, with a medium gap of 3.3 years between the TBI and the appearance of psychotic pathology.Disclosure of interestThe authors have not supplied their declaration of competing interest.

Predictors of the On-Road Driving Assessment After Traumatic Brain Injury: Comparing Cognitive Tests, Injury Factors, and Demographics.

(1) To examine the relations between performance on cognitive tests and on-road driving assessment in a sample of persons with traumatic brain injury (TBI). (2) To compare cognitive predictors of the on-road assessment with demographic and injury-related predictors. Ninety-nine people with mild-severe TBI who completed an on-road driving assessment in an Australian rehabilitation setting. Retrospective case series. Wechsler Test of Adult Reading or National Adult Reading Test-Revised; 4 subtests from the Wechsler Adult Intelligence Scale-III; Rey Auditory Verbal Leaning Test; Rey Complex Figure Test; Trail Making Test; demographic factors (age, sex, years licensed); and injury-related factors (duration of posttraumatic amnesia; time postinjury). Participants who failed the driving assessment did worse on measures of attention, visual memory, and executive processing; however, cognitive tests were weak correlates (r values <0.3) and poor predictors of the driving assessment. Posttraumatic amnesia duration mediated by time postinjury was the strongest predictor of the driving assessment-that is, participants with more severe TBIs had later driving assessments and were more likely to fail. Cognitive tests are not reliable predictors of the on-road driving assessment outcome. Traumatic brain injury severity may be a better predictor of on-road driving; however, further research is needed to identify the best predictors of driving behavior after TBI.