Neuro-behavioural changes after acquired brain injury: The role of the occupational therapist; the interventions they use and why.

INTRODUCTION: Almost half of the people living with acquired brain injury experience behavioural changes, yet there is lack of clarity both in the literature, and through major stakeholders internationally, regarding how occupational therapists contribute to neuro-behavioural rehabilitation and what their role is in this context. METHODS: This study answers the research question: What do occupational therapists perceive as their role in behavioural rehabilitation with adults living with acquired brain injury, and what treatment approaches, if any, are they using to promote occupation? A national, qualitative, bounded case study design using semi-structured interviews was used to explore what the role of the occupational therapist is in neuro-behavioural rehabilitation across subacute brain injury units in Australia. FINDINGS: Four themes were identified which provide clarification on the role of the occupational therapist in neuro-behavioural rehabilitation: You change the task, you change the environment, change the person; build a safe rapport; the sensory stuff is huge and, finally, owning how we think. CONCLUSION: This bounded case study provides insight into how occupational therapists perceive their role and the interventions they use to promote occupational engagement. The lack of recognition of the occupational therapist role is a barrier to providing appropriate neuro-behavioural rehabilitation. This case study identified sensory approaches, building safe rapport and adapting the environment as the main interventions used in neuro-behavioural rehabilitation by occupational therapists.

Defining sensory modulation: A review of the concept and a contemporary definition for application by occupational therapists.

BACKGROUND: Sensory interventions are prevalent amongst adult mental health practitioners and are supported by major stakeholders and policy makers across the world. The term commonly used by occupational therapists applying sensory practices is sensory modulation, however this term has evolved. AIMS: This paper aims to investigate and clarify the definition of 'sensory modulation' for application by occupational therapists. METHOD: A framework guided this concept analysis on sensory modulation. A summative content analysis approach was employed to code results. RESULTS: Six conceptual themes for sensory modulation were identified. 81% of authors defined sensory modulation as consisting of more than one of these themes. 18% of authors defined sensory modulation as both a neurophysiological process and means to regulate behaviour. CONCLUSION: The concept of sensory modulation has evolved in occupational therapy practice. The authors summarise with the following proposed definition of sensory modulation for contemporary occupational therapy practice: 'Sensory modulation is considered a twofold process. It originates in the central nervous system as the neurological ability to regulate and process sensory stimuli; this subsequently offers the individual an opportunity to respond behaviourally to the stimulus'. SIGNIFICANCE: A contemporary definition of 'sensory modulation' has been identified for occupational therapy practice.

Sensory modulation intervention and behaviour support modification for the treatment of severe aggression in Huntington's disease. A single case experimental design.

Aggression is common in Huntington's disease. However, at present there are no standard guidelines for managing aggression in Huntington's sufferers due to a lack of empirical research. This paper presents a case study of the treatment of very high levels of aggression with sensory modulation and behaviour support intervention in a Huntington's sufferer. The client exhibited a range of aggressive behaviours, including physical aggression to people, furniture and objects, and verbal aggression. Following an eight week baseline phase, five weeks of sensory modulation intervention were employed. A behaviour support plan was then implemented as an adjunct to the sensory intervention, with aggressive behaviour systematically audited for a further 11 weeks. The results indicate a significant reduction in reported levels of aggression during the combined sensory modulation and behaviour support phase, compared to both the baseline and the sensory modulation therapy alone phases. This case study highlights the efficacy non-pharmacological interventions may have for reducing aggression in HD.

Characterisation of aggression in Huntington's disease: rates, types and antecedents in an inpatient rehabilitation setting.

AIMS AND OBJECTIVES: To systematically review aggression in an inpatient Huntington's cohort examining rates, types and antecedents. BACKGROUND: Although the prevalence of aggression in Huntington's disease is high, research into this problematic behaviour has been limited. Few studies have investigated the nature of aggressive behaviour in Huntington's disease or antecedents that contribute to its occurrence. DESIGN: A systematic, double-coded, electronic medical file audit. METHODS: The electronic hospital medical records of 10 people with Huntington's disease admitted to a brain disorders unit were audited for a 90-day period using the Overt Aggression Scale-Modified for Neurorehabilitation framework, yielding 900 days of clinical data. RESULTS: Nine of 10 clients exhibited aggression during the audit period. Both verbal (37·1%) aggression and physical aggression were common (33·8%), along with episodes of mixed verbal and physical aggression (15·2%), while aggression to objects/furniture was less prevalent (5·5%). The most common antecedent was physical guidance with personal care, far exceeding any other documented antecedents, and acting as the most common trigger for four of the nine clients who exhibited aggression. For the remaining five clients, there was intraindividual heterogeneity in susceptibility to specific antecedents. CONCLUSION: In Huntington's sufferers at mid- to late stages following disease onset, particular care should be made with personal care assistance due to the propensity for these procedures to elicit an episode of aggression. However, given the degree of intraindividual heterogeneity in susceptibility to specific antecedents observed in the present study, individualised behaviour support plans and sensory modulation interventions may be the most useful in identifying triggers and managing aggressive episodes. RELEVANCE TO CLINICAL PRACTICE: Rates of aggression in Huntington's disease inpatients can be high. Knowledge of potential triggers, such as personal care, is important for nursing and care staff, so that attempts can be made to minimise distress for patients and maximise the personal safety of care staff.

Aggression in Huntington's disease: a systematic review of rates of aggression and treatment methods.

Aggression is commonly reported in individuals with Huntington's disease (HD). While correlating factors for aggression are often speculated about, features that are associated with, and contribute to, aggression in this population have not been clearly determined. This systematic review investigates rates of aggression and treatment options for aggression in HD. A number of key findings were revealed. Studies reporting on rates of aggression revealed that its prevalence is high, falling between 22 and 66 percent in the majority of studies. Aggression may be more common in males with HD, and is also found in higher rates in individuals who experience frequent falls, have obsessive-compulsive symptoms and suicidal ideation. There is little research investigating antecedents for aggression in HD. A wide variety of psychotropic medications have been reported in the literature to treat individuals with HD and aggressive behaviour. However, due to methodological limitations, no treatment recommendations can be made, based on the current literature. Two non-medication therapies have been investigated, behaviour support and sensory modulation intervention. However, again, due to methodological limitations with these studies, further research is needed before they can be recommended as frontline interventions. This review highlights the need for further methodologically rigorous studies investigating the treatment of aggression in HD.