Pre-Injury, Injury and Early Post-Injury Predictors of Long-Term Functional and Psychosocial Recovery After Severe Traumatic Brain Injury

Everyday Memory for Everyday Tasks: Prospective Memory as an Outcome Measure Following TBI in Older Adults

Traumatic brain injury in older adults is an increasing problem in our aging community. Traditional functional outcome measures, such as return to work or academic achievement, as used with younger samples following traumatic brain injury are of limited use for older people. Although challenging to assess reliably, evaluation of prospective memory is gradually being included in outcome assessments following traumatic brain injury in younger samples and may be a useful index of cognitive competence in everyday life when assessing older adults following traumatic brain injury.

Long-Term Community Supports for Individuals With Co-Occurring Disabilities After Traumatic Brain Injury: Cost Effectiveness and Project-Based Intervention

Outcome studies have established that successful community living is compromised in the population of individuals with traumatic brain injury and chronic behavioural difficulties along with a co-occurring diagnosis of substance abuse and/or mental health disorder. Two studies are presented. The first was aimed at describing long-term outcome of a sample of individuals (N = 51) served by the New York State Department of Health TBI Medicaid Waiver Program. Each of the participants was diagnosed with TBI plus either substance abuse or a mental health disorder, or both. Because of significant behavioural challenges, all of the participants were in a restrictive living setting the year before enrolment in the waiver program (e.g., nursing or correctional facility). Data on community living arrangement, self-reported community integration experiences, and costs are presented. Results indicate that most of the participants (41 of the 46 who were alive and living in state) continued to live in the community 8 to 9 years after commencement of community support services. The participants' community integration responses were generally positive and cost data demonstrate substantial savings to the state for this cohort. Comparing prewaiver costs in residential settings with most recent (2005) costs for community supports, there was an average daily cost savings of US$137 per person for the 1996 cohort and US$144 per person for the 1997 cohort. The second study explored the use of project-oriented interventions and supports in an agency that provides community support services to this dual diagnosis population. Project-oriented services are described as meeting many needs common to this dual-diagnosis population. Clinical staff (N = 11) and a sample of waiver participants (N = 7) were surveyed. Results suggest that the use of personally meaningful projects can become a clinical habit for staff and that projects are generally judged by participants to be a meaningful use of time, and significant in giving them an opportunity to play an expert role and to help others.

Recovery of Impairments After Severe Traumatic Brain Injury: Findings From a Prospective, Multicentre Study

This study aimed to describe the recovery of impairments after severe traumatic brain injury (TBI) over a 3-year period. An inception cohort over 2 years was recruited from 11 brain injury rehabilitation units participating in a state-wide program. The 131 individuals with TBI were assessed at admission to the rehabilitation program, 18 months and 3 years post-trauma. This report described results from the Disability Rating Scale (DRS) and Mayo-Portland Adaptability Index (MPAI). Regression analyses, examining the influence of five acute injury variables on DRS and MPAI, revealed that posttraumatic amnesia (PTA) was a significant individual predictor. Data were thus analysed according to duration of PTA: 1 to 2 weeks (n= 19), 2 to 4 weeks (n= 44) and more than 4 weeks (n= 68). At program admission there was poorer overall level of functioning on the DRS in the longest PTA group, but no difference between the shorter PTA groups. Significant improvements occurred on the DRS for all PTA groups over the first 18 months posttrauma, with improvements continuing between 18 months and 3 years. At the 3-year follow-up, frequency data from the MPAI indicated that clinically significant impairments in mobility, hand function, communication and behaviour were uncommon in the shorter PTA groups, although 36% to 47% continued to experience cognitive impairments. Impairments were common in the longest PTA group in some areas, particularly cognition where two thirds or more continued to experience clinically significant impairments in attention, memory and novel problem-solving. These results confirm the predictive significance of PTA duration regarding longer-term level of recovery. They also highlight the limitation in classifying the ‘severe’ TBI category as an homogenous group: significant subgroup differences occurred on medical and functional variables at program admission, 18 months and 3 years posttrauma. These data further substantiate the persistence of neuropsychological impairments in the face of good physical recovery at all levels of severity within the severe TBI group.

Increasing Leisure Activity Following Severe Traumatic Brain Injury: Does It Make a Difference?

The majority of people with severe traumatic brain injury (TBI) experience long-term disability and are unable to return to their usual activities. Services that offer community social and leisure participation programs are likely to reduce the social burden associated with severe TBI. The aim of this study was to gain an understanding of the personal effects of becoming engaged in community leisure activities. It was hypothesised that adults with severe TBI who participated regularly in leisure activities over a 6-month period would show measurable positive change in the domains of community integration, social support, mental health and quality of life (QOL). Participants numbered 25 adults (mean age 36.95 years) who had been referred to community leisure programs participated in the study. All participants had sustained severe injuries (post-traumatic amnesia > 1 month). A repeated measures design over 6 months was used. Assessment involved a semistructured interview, global subjective QOL rating and administration of standardised measures: SF-12v2, Neurobehavioral Functioning Inventory, Instrumental-Expressive Social Support-Scale, and Community Integration Questionnaire. Adults who participated regularly over 6 months reported positive and statistically significant changes in social integration and mental health. These findings support the use of assisted community participation programs for adults with severe TBI.

The Relationship between age, injury severity, and MRI findings after traumatic brain injury

Age and injury severity are among the most significant predictors of outcome after traumatic brain injury (TBI). However, only a few studies have investigated the association between, age, injury severity, and the extent of brain damage in TBI. The purpose of this study was to investigate the association between age, measures of injury severity, and brain lesion volumes, as well as viable brain volumes, following TBI. Ninety-eight individuals with mild to very severe TBI (75.5% male, mean age at injury 34.5 years) underwent a structural MRI scan, performed with a 1.5-Tesla machine, on average 2.3 years post-injury. Lesion volumes were highly skewed in their distribution and were dichotomized for statistical purposes. Measures of injury severity were Glasgow Coma Scale score (GCS) and duration of post-traumatic amnesia (PTA). Logistic regression analyses predicting lesion volumes, controlling for participants' gender, cause of injury, time from injury to MRI scan, and total brain volume, revealed that both older age and longer PTA were associated with larger lesion volumes in both grey and white matter in almost all brain regions. Older age was also associated with smaller viable grey matter volumes in most neo-cortical brain regions, while longer PTA was associated with smaller viable white matter volumes in most brain regions. The results suggest that older age worsens the impact of TBI on the brain. They also indicate the validity of duration of PTA as a measure of injury severity that is not just related to one particular injury location.

Functional outcome 10 years after traumatic brain injury: its relationship with demographic, injury severity, and cognitive and emotional status

Previous investigations of long-term outcome following traumatic brain injury (TBI) have yielded mixed results regarding the predictive power of injury severity and demographic factors. Furthermore, there has been limited investigation of the association between long-term outcome and current cognitive functioning and psychiatric state. The aim of this study was to investigate the association of injury severity, demographic factors, and concurrent cognitive and psychiatric functioning with functional outcome 10 years following mild to severe TBI. Outcome was rated using the Extended Glasgow Outcome Scale (GOSE) for 60 participants, who also completed neuropsychological measures of attention, speed of processing, memory and executive function and the Hospital Anxiety and Depression Scale (HADS). Outcome on the GOSE ranged from upper good recovery (32%) to lower severe disability (2%). Participants showing poorer outcome on the GOSE had significantly longer posttraumatic amnesia duration; less education; performed more poorly on cognitive measures of information processing speed, attention, memory, and executive function; and showed higher levels of anxiety on the HADS.

Psychosocial and emotional outcomes 10 years following traumatic brain injury

OBJECTIVES

To investigate the association of psychosocial outcome 10 years following traumatic brain injury (TBI) with demographic variables, injury severity, current cognitive functioning, emotional state, aggression, alcohol use, and fatigue.

SETTING

Community-based follow-up.

PARTICIPANTS

Fifty-three participants with mild to very severe TBI sustained 10 years previously and significant others.

MEASURES

Sydney Psychosocial Reintegration Scale, Extended Glasgow Outcome Scale, Hospital Anxiety and Depression Scale, NFI Aggression scale, Fatigue Severity Scale, Alcohol Use Disorders Identification Test, neuropsychological tests of attention/processing speed, memory, and executive function.

RESULTS

Psychosocial functioning was lowest in the occupational activity domain and highest in the living skills domains. Variables including education, posttraumatic amnesia duration, numerous cognitive measures, concurrent fatigue, aggression, anxiety, and depression were all significantly associated with psychosocial outcome, although the strength of correlations varied between ratings of participants with TBI and relatives. Posttraumatic amnesia duration was most strongly associated with psychosocial outcome measured by relatives; anxiety, aggression, and depression were the strongest predictors when ratings were assigned by participants with TBI. Self-reported fatigue, depression, and alcohol use were the strongest predictors of aggression.

CONCLUSIONS

It is important to address problems with anxiety, depression, fatigue, and alcohol use as a possible means of improving long-term psychosocial outcome following TBI.