Neurorehabilitation for two cases of post-traumatic stress disorder following traumatic brain injury

Mood Disorders in Young People With Acquired Brain Injury: An Integrated Model

Purpose/Objective

Young people with paediatric acquired brain injury (pABI) are twice as likely to develop a mood disorder as their peers, frequently have significant unmet socio-emotional needs, and are at over double the risk of going on to use adult mental health services. Recent years have seen significant advances in the development of interventions for young people with mood disorders. However, evidence-based approaches to mood disorders in pABI are lacking and surprisingly little work has evaluated clinical and neuro-developmental models of mood disorders in this population.

Method

We review the literature regarding key mechanisms hypothesised to account for the increased vulnerability to mood disorders in pABI: First, we summarise the direct neurocognitive consequences of pABI, considering the key areas of the brain implicated in vulnerability to mood disorders within a neurodevelopmental framework. Second, we outline five key factors that contribute to the heightened prevalence of mood disorders in young people following ABI. Finally, we synthesise these, integrating neuro-cognitive, developmental and systemic factors to guide clinical formulation.

Results and Implications

We present a framework that synthesises the key mechanisms identified in our review, namely the direct effects of pABI, neurocognitive and neuroendocrine factors implicated in mood and anxiety disorders, maladaptive neuroplasticity and trauma, structural and systemic factors, and psychological adjustment and developmental context. This framework is the first attempt to provide integrated guidance on the multiple factors that contribute to elevated life-long risk of mood disorders following pABI.

Treatment for posttraumatic stress disorder in patients with a history of traumatic brain injury: A systematic review

Posttraumatic stress disorder (PTSD) frequently co-occurs with traumatic brain injury (TBI). We conducted a systematic review to evaluate the appropriateness and effectiveness of treatments for PTSD in adult patients with a history of TBI. We searched for longitudinal studies aimed at treatments for PTSD patients who sustained a TBI, published in English between 1980 and February 2019. Twenty-three studies were found eligible, and 26 case studies were included for a separate overview. The quality of eligible studies was assessed using the Research Triangle Institute item bank. The majority of studies included types of cognitive-behavioral therapy (CBT) in male service members and veterans with a history of mild TBI in the United States. Studies using prolonged exposure (PE), cognitive-processing therapy (CPT) or other types of CBT, usually in combination with additional treatments, showed favorable outcomes. A smaller number of studies described complementary and novel therapies, which showed promising results. Overall, the quality of studies was considered low. We concluded that CBT seem appropriate for the patient population with history of TBI. The evidence is less strong for other therapies. We recommend controlled studies of PTSD treatments including more female patients and those with a history of moderate to severe TBIs in civilian and military populations.

An acceptance and commitment therapy-based intervention for PTSD following traumatic brain injury: a case study

Introduction: A case study is presented to illustrate the management of Post-Traumatic Stress Disorder (PTSD) in the context of Traumatic Brain Injury (TBI), using an Acceptance and Commitment Therapy (ACT) based approach. A 48-year-old female presented to Neuropsychology with cognitive difficulties, significant distress and trauma symptoms following a car accident. ACT is a third wave cognitive-behavioral approach aimed at increasing psychological flexibility as a means of reducing distress: it is a trans-diagnostic model that may be suited to the complex and multi-factorial difficulties experienced by this client group.Methods: A guided self-help approach based on ACT was implemented by the client working with a Clinical Psychologist within a Community Neuropsychology service, over 12 appointments.Results: Outcome measures were administered pre and post-intervention as well as at three and then 12-month follow-ups. Improvements were seen across ACT outcome measures, psychological measures and quality of life ratings and were consistent with subjective reporting.Discussion: Outcomes were positive in all domains post-intervention and at follow-up, indicating that this may be a feasible intervention for PTSD following TBI.

Zebrafish models relevant to studying central opioid and endocannabinoid systems

The endocannabinoid and opioid systems are two interplaying neurotransmitter systems that modulate drug abuse, anxiety, pain, cognition, neurogenesis and immune activity. Although they are involved in such critical functions, our understanding of endocannabinoid and opioid physiology remains limited, necessitating further studies, novel models and new model organisms in this field. Zebrafish (Danio rerio) is rapidly emerging as one of the most effective translational models in neuroscience and biological psychiatry. Due to their high physiological and genetic homology to humans, zebrafish may be effectively used to study the endocannabinoid and opioid systems. Here, we discuss current models used to target the endocannabinoid and opioid systems in zebrafish, and their potential use in future translational research and high-throughput drug screening. Emphasizing the high degree of conservation of the endocannabinoid and opioid systems in zebrafish and mammals, we suggest zebrafish as an excellent model organism to study these systems and to search for the new drugs and therapies targeting their evolutionarily conserved mechanisms.

Evaluation of the Effectiveness of a Novel Brain and Vestibular Rehabilitation Treatment Modality in PTSD Patients Who have Suffered Combat-Related Traumatic Brain Injuries

Introduction: Blast-related head injuries are among the most prevalent injuries suffered by military personnel deployed in combat and mild traumatic brain injury (mTBI) or concussion on the battlefield in Iraq/Afghanistan has resulted in its designation as a “signature injury.” Vestibular complaints are the most frequent sequelae of mTBI, and vestibular rehabilitation (VR) has been established as the most important treatment modality for this group of patients.

Materials and Methods: We studied the effectiveness of a novel brain and VR treatment post-traumatic stress disorder (PTSD) in subjects who had suffered combat-related traumatic brain injuries in terms of PTSD symptom reduction. The trial was registered as ClinicalTrials.gov Identifier: NCT02003352. (http://clinicaltrials.gov/ct2/show/NCT02003352?term=carrick&rank=6). We analyzed the difference in the Clinician Administered DSM-IV PTSD Scale (CAPS) scores pre- and post-treatment using our subjects as their own matched controls. The study population consisted of 98 combat veterans maintaining an alpha of <0.05 and power of 80%.

Results: Prior to treatment, 75 subjects representing 76.53 % of the sample were classified in the 2 most severe categories of PTSD. Forty-one subjects, representing 41.80 % of the total sample, were classified in the extreme category of PTSD and 34 subjects, representing 34.70 % of the total sample, were classified in the severe category of PTSD. After treatment, we observed a large reduction in CAPS severity scores with both statistical and substantive significance.

Discussion: Treatment of PTSD as a physical injury rather than a psychiatric disorder is associated with strong statistical and substantive significant outcomes associated with a decrease of PTSD classification. The stigma associated with neuropsychiatric disorders may be lessened when PTSD is treated with brain and VR with a potential decrease in suffering of patients, family, and society.

The manifestation of anxiety disorders after traumatic brain injury: a review

The development of anxiety disorders after a traumatic brain injury (TBI) is a strong predictor of social, personal, and work dysfunction; nevertheless, the emergence of anxiety has been largely unexplored and poorly understood in the context of TBI. This article provides an overview of the limited published research to date on anxiety disorders that are known to develop after TBI, including post-traumatic stress disorder, generalized anxiety disorder, obsessive-compulsive disorder, panic disorder, specific phobia, and social anxiety disorder. This review also examines diagnostic criteria, the epidemiology of each disorder, and the factors that influence the expression of these conditions, including injury-related and psychosocial variables. Putative neural correlates will be reviewed where known. A discussion of current treatment options and avenues for further research are explored.

A Randomised Controlled Trial of a Cognitive-Behavioural Therapy Program for Managing Social Anxiety After Acquired Brain Injury

Despite the prevalence of psychiatric illness in people with acquired brain injury (ABI), there are very few empirically validated studies examining the efficacy of treatments targeting commonly occurring disorders such as depression and anxiety. Using a randomised controlled trial, this study evaluated the efficacy of a cognitive behavioural intervention specifically designed for managing social anxiety following ABI. Twelve brain-injured participants were screened, randomly allocated to either treatment group (TG) or a wait list group (WLG), and proceeded through to the final stages of therapy. The TG received between 9 and 14 hourly, individual sessions of cognitive behavioural therapy. Repeated measures analyses revealed significant improvements in general anxiety, depression and a transient mood measure, tension-anxiety, for the TG when compared to the WLG at posttreatment. These treatment gains were maintained at one-month follow-up. Although in the predicted direction, postintervention improvements in social anxiety and self-esteem for the TG were not significant in comparison with the WLG. This study lends support to the small body of literature highlighting the potential of cognitive behavioural interventions for managing the psychological problems that serve as a barrier to rehabilitation following ABI.

Communication patterns in a psychotherapy following traumatic brain injury: a quantitative case study based on symbolic dynamics

BACKGROUND

The role of psychotherapy in the treatment of traumatic brain injury is receiving increased attention. The evaluation of psychotherapy with these patients has been conducted largely in the absence of quantitative data concerning the therapy itself. Quantitative methods for characterizing the sequence-sensitive structure of patient-therapist communication are now being developed with the objective of improving the effectiveness of psychotherapy following traumatic brain injury.

METHODS

The content of three therapy session transcripts (sessions were separated by four months) obtained from a patient with a history of several motor vehicle accidents who was receiving dialectical behavior therapy was scored and analyzed using methods derived from the mathematical theory of symbolic dynamics.

RESULTS

The analysis of symbol frequencies was largely uninformative. When repeated triples were examined a marked pattern of change in content was observed over the three sessions. The context free grammar complexity and the Lempel-Ziv complexity were calculated for each therapy session. For both measures, the rate of complexity generation, expressed as bits per minute, increased longitudinally during the course of therapy. The between-session increases in complexity generation rates are consistent with calculations of mutual information. Taken together these results indicate that there was a quantifiable increase in the variability of patient-therapist verbal behavior during the course of therapy. Comparison of complexity values against values obtained from equiprobable random surrogates established the presence of a nonrandom structure in patient-therapist dialog (P = .002).

CONCLUSIONS

While recognizing that only limited conclusions can be based on a case history, it can be noted that these quantitative observations are consistent with qualitative clinical observations of increases in the flexibility of discourse during therapy. These procedures can be of particular value in the examination of therapies following traumatic brain injury because, in some presentations, these therapies are complicated by deficits that result in subtle distortions of language that produce significant post-injury social impairment. Independently of the mathematical analysis applied to the investigation of therapy-generated symbol sequences, our experience suggests that the procedures presented here are of value in training therapists.

Is it time to act? The potential of acceptance and commitment therapy for psychological problems following acquired brain injury

Behaviour therapies have a well-established, useful tradition in psychological treatments and have undergone several major revisions. Acceptance and Commitment Therapy (ACT) and mindfulness-based approaches are considered a third wave of behavioural therapies. Emerging evidence for ACT has demonstrated that this paradigm has promising effectiveness in improving functionality and well-being in a variety of populations that have psychological disturbances and/or medical problems. In this review we first evaluate traditional cognitive behavioural therapy (CBT) interventions used to manage psychological problems in distressed individuals who have sustained an acquired brain injury (ABI). We provide an overview of the ACT paradigm and the existent evidence base for this intervention. A rationale is outlined for why ACT-based interventions may have potential utility in assisting distressed individuals who have sustained a mild to moderate ABI to move forward with their lives. We also review emerging evidence that lends preliminary support to the implementation of acceptance and mindfulness-based interventions in the rehabilitation of ABI patient groups. On the basis of existent literature, we recommend that it is an opportune time for forthcoming research to rigorously test the efficacy of ACT-based interventions in facilitating ABI patient groups to re-engage in living a valued and meaningful life, in spite of their neurocognitive and physical limitations. The promising utility of testing the efficacy of the ACT paradigm in the context of multimodal rehabilitation programmes for ABI populations is also addressed.

Cognitive behavioral therapy for the treatment of post-traumatic stress disorder: a review

BACKGROUND

Post-traumatic stress disorder (PTSD) is a psychiatric sequel to a stressful event or situation of an exceptionally threatening or catastrophic nature. Cognitive behavioral therapy (CBT) has been used in the management of PTSD for many years. This paper reviews the effectiveness of CBT for the treatment of PTSD following various types of trauma, its potential to prevent PTSD, methods used in CBT, and reflects on the mechanisms of action of CBT in PTSD.

METHODS

Electronic databases, including PubMed, were searched for articles on CBT and PTSD. Manual searches were conducted for cross-references in the relevant journal sites.

RESULTS

The current literature reveals robust evidence that CBT is a safe and effective intervention for both acute and chronic PTSD following a range of traumatic experiences in adults, children, and adolescents. However, nonresponse to CBT by PTSD can be as high as 50%, contributed to by various factors, including comorbidity and the nature of the study population. CBT has been validated and used across many cultures, and has been used successfully by community therapists following brief training in individual and group settings. There has been effective use of Internet-based CBT in PTSD. CBT has been found to have a preventive role in some studies, but evidence for definitive recommendations is inadequate. The effect of CBT has been mediated mostly by the change in maladaptive cognitive distortions associated with PTSD. Many studies also report physiological, functional neuroimaging, and electroencephalographic changes correlating with response to CBT.

CONCLUSION

There is scope for further research on implementation of CBT following major disasters, its preventive potential following various traumas, and the neuropsychological mechanisms of action.

A clinical pathway including psychotherapy approaches for managing emotional difficulties after acquired brain injury

Emotional difficulties, such as anxiety and depression, are common after acquired brain injury in adults and can influence long-term outcome. Diagnosis in a brain injury context can be difficult. Ideally, rehabilitation approaches should consider the specific treatment of anxiety and depression as well and may include pharmacotherapy, individual psychotherapy, and family interventions. Psychotherapy, especially in regards to longer-term adjustment to brain injury, may have an important adjunctive role in treatment approaches, but adaptations of techniques may be needed. A clinical pathway is described which can help to raise clinicians awareness, as well as increase detection rates and consideration of the specific role of individual psychotherapy in this clinical population. However, an important caveat is that clinical pathways should not serve as a substitute, but rather a facilitator, for the process of reasoning about individual patients in everyday clinical practice.

The efficacy of cognitive behavior therapy in the treatment of emotional distress after acquired brain injury

OBJECTIVE

To evaluate the efficacy of cognitive behavior therapy (CBT), adapted to meet the unique needs of individuals with acquired brain injury (ABI), and modified for both group and telephone delivery.

DESIGN

Matched-controlled trial, with multiple measurements across participants, including pretreatment baseline assessment plus posttreatment and 1-month follow-up.

SETTING

Outpatient community brain injury center.

PARTICIPANTS

Participants (N=20) with chronic ABI. Ten were assigned to the CBT treatment group and 10 to education control. All were experiencing significant emotional distress at the onset of the study.

INTERVENTION

Eleven sessions of CBT (or education control), including 1 introductory individual session plus 10 further sessions administered in either group format or by telephone. The CBT was designed to decrease psychologic distress and improve coping. Specific adaptations were made to the CBT in order to better accommodate individuals with cognitive difficulties.

MAIN OUTCOME MEASURES

Primary outcome measures included the Symptom Checklist-90-Revised (SCL-90-R) and the Depression Anxiety Stress Scales (DASS-21). Secondary outcome measures included the Community Integration Questionnaire (CIQ) and the Ways of Coping Scale, Revised.

RESULTS

Significant CBT treatment effects (in both group and telephone formats) were observed on the SCL-90-R and the DASS-21, whereas no significant effects were observed in the education control group. No significant effects of treatment were observed on the CIQ or Ways of Coping Scale, Revised.

CONCLUSIONS

Results suggest that adapted CBT-administered by telephone or in a face-to-face group setting-can significantly improve emotional well-being in chronic ABI.

Neuropsychological rehabilitation

Neuropsychological rehabilitation (NR) is concerned with the amelioration of cognitive, emotional, psychosocial, and behavioral deficits caused by an insult to the brain. Major changes in NR have occurred over the past decade or so. NR is now mostly centered on a goal-planning approach in a partnership of survivors of brain injury, their families, and professional staff who negotiate and select goals to be achieved. There is widespread recognition that cognition, emotion, and psychosocial functioning are interlinked, and all should be targeted in rehabilitation. This is the basis of the holistic approach. Technology is increasingly used to compensate for cognitive deficits, and some technological aids are discussed. Evidence for effective treatment of cognitive, emotional, and psychosocial difficulties is presented, models that have been most influential in NR are described, and the review concludes with guidelines for good practice.

PTSD and traumatic brain injury: folklore and fact?

A number of controversies and debates have arisen over the years surrounding the dual diagnosis of post-traumatic stress disorder (PTSD) and traumatic brain injury (TBI). Many of these have centred around the around the degree of protection provided by TBI against developing the disorder. The following is brief review of the literature in this area to help resolve some of these issues and to address a number of specific challenges which arise when working with this patient group.

Depressive rumination reduces specificity of autobiographical memory recall in acquired brain injury

Individuals with acquired brain injuries (ABI) often experience depression following injury, with estimated rates between 20 and 40% within the first year and up to 50% thereafter (Fleminger et al., 2003). Previous studies with non-brain-injured individuals have identified that rumination is prevalent in both the development and maintenance of depression. The study aimed to explore how depressive rumination may contribute to overgeneral memory recall in ABI patients, by assessing the effects of manipulating ruminative self-focus on autobiographical memory performance across levels of brain injury. Fifty-eight ABI individuals with mild (28) to moderate/severe (30) cognitive impairments were assessed on measures of mood, rumination and autobiographical memory. They were then randomly assigned into matched groups for an intervention (a distraction) or a rumination task. Following intervention, they were re-assessed for autobiographical recall and rumination. Findings indicate that ruminative self-focus reduced specificity of autobiographical memory in individuals with ABI, suggesting that depressive rumination plays a role in the reduced access to autobiographical memories. Higher baseline levels of depression and rumination were also associated with less specificity in recall. These findings indicate the value of identifying and treating depression among this population.

Psychological treatment for anxiety in people with traumatic brain injury

BACKGROUND

Psychological treatments are commonly used in the management of anxiety. Certain types of psychological treatments are well suited to needs of people with traumatic brain injury (TBI). We have systematically reviewed studies examining the effectiveness of these approaches for TBI.

OBJECTIVES

To assess the effects of psychological treatments for anxiety in people with TBI.

SEARCH STRATEGY

We searched the following databases up until March 2006: Cochrane Injuries Group's specialised register, Cochrane Depression, Anxiety and Neurosis Group's specialised register, Cochrane Central Register of Controlled Trials, MEDLINE, PsycINFO, EMBASE, CINAHL, AMED, ERIC, and PsycBITE. Additionally, key journals were handsearched and reference lists of included trials were examined to identify further studies meeting inclusion criteria.

SELECTION CRITERIA

Randomised controlled trials of psychological treatments for anxiety, with or without pharmacological treatment, for people with TBI were included in the review. Pharmacological treatments for anxiety in isolation (without psychological intervention) were excluded.

DATA COLLECTION AND ANALYSIS

Two authors independently assessed methodological quality and extracted data from the included trials.

MAIN RESULTS

Three trials were identified in this review as satisfying inclusion criteria. Results of all three trials were evaluated, however, one of these trials had compromised methodological quality and, therefore the focus was placed on the other two trials. Data were not pooled due to the heterogeneity between trials. The first trial (n = 24) showed a benefit of cognitive behavioural therapy (CBT) in people with mild TBI and acute stress disorder. Fewer people receiving CBT had diagnosis of post-traumatic stress disorder (PTSD) at post-treatment compared to the control supportive counselling group, with maintenance of treatment gains found at six-month follow up. The second trial (n = 20) showed that post-treatment anxiety symptomatology of people with mild to moderate TBI was lower in the combined CBT and neurorehabilitation group compared to the no intervention control group.

AUTHORS' CONCLUSIONS

This review provides some evidence for the effectiveness of CBT for treatment of acute stress disorder following mild TBI and CBT combined with neurorehabilitation for targeting general anxiety symptomatology in people with mild to moderate TBI. These findings need to be viewed in light of the small number, small sample size and heterogeneous characteristics of current trials published in this area. More trials focusing on comparable psychological interventions, severity of injury of participants and diagnosis of anxiety disorder(s) are needed.

The clinical neuropsychologist's dilemma

Academic neuropsychologists are increasingly engaged in (and are part of) cognitive neuroscience. Neuroimaging is currently high on the agenda, neuroplasticity is a very topical field within neuroscience, and a number of neuropsychologists work on animal models of brain injury. Clinical neuropsychologists, particularly those involved in rehabilitation, will usually tell you that their work needs to be guided by theory or else they risk the accusation of being simply pragmatic. The fundamental question for clinical neuropsychologists is which theory or theories are most relevant and useful for the patients and families with whom they work? While it would seem that most clinical neuropsychologists consider cognitive neuroscience to be of direct or at least indirect benefit to clinical neuropsychological practice, it is part of the argument of this paper to suggest that the benefits are less substantial than is sometimes claimed. As I work with both academic and clinical neuropsychologists, I hold the conviction that theory should be relevant to clinical practice while, at the same time, wanting neuropsychological rehabilitation to be respectable in the eyes of the academic community. However, when treating a patient with brain injury it is sometimes a struggle to implement, or even see the relevance of findings from cognitive neuroscience.