Treatments and technologies in the rehabilitation of apraxia and action disorganisation syndrome: A review

BACKGROUND: Apraxia and Action Disorganisation Syndrome are characterised by an inability to use tools and carry out ordered sequences of movements in the absence of motor or sensory impairment. To date treatment for these complex but debilitating conditions has received little attention.

OBJECTIVES: To provide an overview of apraxia and action disorganisation syndrome and its treatment, providing a state of the art summary for practitioners including likely future therapeutic directions.

METHOD: Review of apraxia literature and treatment studies collated from internet searches involving MEDLINE, PubMed, PyscINFO and Google Scholar as well as the author’s own catalogue.

RESULTS: Evidence for current restitution and compensatory approaches is critically reviewed, with limited evidence to date in support of either method. Strategy training is the most promising intervention type with no support for sensory and exploratory interventions, practice effects only for direct task-specific training, and modest support for gestural training.

CONCLUSIONS: Larger controlled studies are needed but evidence is sufficient to indicate certain approaches over others. Advances in assistive technology have not translated into mainstream therapy but future interventions are likely to require a model-based approach which embraces current technologies in order to provide a more accessible, effective and cost-efficient approach to rehabilitation.

Dressing after a Stroke: A Survey of Current Occupational Therapy Practice

The objective of this study was to determine occupational therapists' beliefs about the influence of cognitive impairment on dressing difficulties and to ascertain current practice when treating dressing problems. The study design was a questionnaire survey of occupational therapists experienced in stroke care who treated patients with dressing difficulties.

Out of 137 questionnaires sent, 76 (55.5%) were returned. The frequency of dressing practice provided by the occupational therapists ranged from two to four times a week. Only 43% of the therapists used standardised assessments and the most common one used was the Rivermead Perceptual Assessment Battery. Apraxia was reported by 76% of the therapists as influencing a patient's ability to dress, neglect by 71 % and memory problems by 63%. Seventy-six per cent of the therapists reported that orientating clothing and relating it to body parts was a major dressing difficulty. Other dressing difficulties reported were sequencing by 56% and failing to dress the affected side by 34%. Ninety-eight per cent of the therapists spent time providing the practice of specific functional skills on a repetitive basis; however, 60% continued to use table-top tasks aimed at targeting a particular cognitive impairment.

The majority of the therapists felt that cognitive impairment was a major reason for dressing difficulties in stroke patients. With the exception of one, all the therapists provided repetitive practice on dressing tasks and over half continued to use table-top tasks. The evidence to support the types of treatment used by occupational therapists remains controversial. Further research into this area is required.

Rehabilitation in Severe Ideomotor Apraxia Using Sensory Stimulation Strategies: A Single-Case Experimental Design Study

This study was designed to evaluate the treatment of a young head-injured woman with ideomotor apraxia. An ABA (baseline, intervention, baseline) single-case experimental design was employed to evaluate the impact of sensory stimulation on motor performance, using a range of measures including a simple timed task and active finger and hand movements measured by goniometry.

A key finding was the extent of variance in performance day by day in both the baseline and intervention phases, although a reduction in that variability was achieved in the intervention phase of the study. Improvements were noted in motor performance across all the measures in the intervention phase of the study, although such improvements could not be attributed to sensory stimulation procedures alone. Improvements in motor performance were found immediately following sensory stimulation procedures, but no carryover was noted from one day to the next. This study suggests that practice in motor performance could enhance specific actions in people with ideomotor apraxia.

Dyspraxia: Guidelines for Intervention

‘Clinicians wishing to base their assessment on sound, empirically and theoretically based principles are soon daunted by the diverse, poorly integrated and sometimes contradictory nature of apraxia research’ (Tate and McDonald 1995). This paper attempts to identify some of the common ground in research and, by using this along with clinical experience, identifies guidelines for occupational therapists working with adults who have acquired dyspraxia.

Much of the neuropsychological literature refers to the term ‘apraxia’; however, many occupational therapists use the term ‘dyspraxia’ and it is therefore the term of choice in this paper. Literature searches should make use of both terms.

Systematic Review of Apraxia Treatments to Improve Occupational Performance Outcomes

The objective was to assess effectiveness of apraxia treatments using a systematic review. In contrast to previous reviews, each study was rated as to its applicability to occupational therapy practice and its focus on occupational performance using the FAME rating system (defined by four categories: Feasibility, Appropriateness, Meaningfulness, Effectiveness). This systematic review included eight studies: four randomized controlled trials (level 1 evidence) and four pre-post designs (level 3 evidence). Three treatment approaches were reported: errorless learning with training of details; gesture training; and strategy training. FAME scores ranged from A to C. All studies reported significant treatment effects, but only one demonstrated an impact on observed occupational performance that transferred from clinic to home.

Interventions for motor apraxia following stroke

BACKGROUND

Apraxia is a cognitive disorder that can occur after stroke. It prevents a person from carrying out a learned movement. Various interventions are used to treat apraxia but evidence of their benefit has been lacking.

OBJECTIVES

To determine which therapeutic interventions targeted at motor apraxia reduce disability.

SEARCH STRATEGY

We searched the Cochrane Stroke Group Trials Register (last searched November 2006). In addition, we searched the following databases: the Cochrane Central Register of Controlled Trials (CENTRAL) (The Cochrane Library Issue 3, 2006), MEDLINE (1966 to November 2007), EMBASE (1980 to November 2006), CINAHL (1982 to November 2006), PsycINFO (1974 to November 2006), the Research Index of the Occupational Therapy Journal (searched November 2006), REHABDATA (1956 to November 2006), the National Research Register (searched November 2006) and Current Controlled Trials Register (searched November 2006). We reviewed the reference lists of all articles that we identified as relevant. We made efforts to find both published and unpublished trials by writing to key authors and journals.

SELECTION CRITERIA

Randomised controlled trials of therapeutic intervention for motor apraxia in stroke.

DATA COLLECTION AND ANALYSIS

One review author searched the titles, abstracts and keywords. Four review authors extracted data and analysed trial quality. We contacted investigators for further details of trials if necessary.

MAIN RESULTS

Three trials including a total of 132 participants were included in the review. There was evidence of a small and short-lived therapeutic effect in the two studies that reported change in activities of daily living (102 participants) but this was not considered clinically significant and did not persist at the longer-term follow up.

AUTHORS' CONCLUSIONS

There is insufficient evidence to support or refute the effectiveness of specific therapeutic interventions for motor apraxia after stroke. Further research of higher quality is required. As we did not review whether patients with apraxia benefit from rehabilitation input in general, they should continue to receive general stroke rehabilitation services.

Exploring Evidence-Based Practice by Occupational Therapists when Working with People with Apraxia

Evidence in the literature supports a number of interventions that occupational therapists may utilise when working with people with apraxia, although there is no gold standard approach. A large-scale survey (n = 304, 36% response rate) was conducted with the membership of the College of Occupational Therapists Specialist Section — Neurological Practice to explore therapists' understanding of apraxia and to provide a benchmark of current practice. Consensus was found in the majority of belief statements regarding the condition, although the respondents were unclear about the relationship between cognition and apraxia. When the therapists were asked to indicate their choice and use of interventions for apraxia, the results showed that the main consideration was the context in which a person performs activities, with moderate use of specific techniques including errorless learning and chaining. The results are related to the evidence base and the implications for occupational therapy practice and education are discussed.

EFNS guidelines on cognitive rehabilitation: report of an EFNS task force

Disorders of language, spatial perception, attention, memory, calculation and praxis are a frequent consequence of acquired brain damage [in particular, stroke and traumatic brain injury (TBI)] and a major determinant of disability. The rehabilitation of aphasia and, more recently, of other cognitive disorders is an important area of neurological rehabilitation. We report here a review of the available evidence about effectiveness of cognitive rehabilitation. Given the limited number and generally low quality of randomized clinical trials (RCTs) in this area of therapeutic intervention, the Task Force considered, besides the available Cochrane reviews, evidence of lower classes which was critically analysed until a consensus was reached. In particular, we considered evidence from small group or single cases studies including an appropriate statistical evaluation of effect sizes. The general conclusion is that there is evidence to award a grade A, B or C recommendation to some forms of cognitive rehabilitation in patients with neuropsychological deficits in the post-acute stage after a focal brain lesion (stroke, TBI). These include aphasia therapy, rehabilitation of unilateral spatial neglect (ULN), attentional training in the post-acute stage after TBI, the use of electronic memory aids in memory disorders, and the treatment of apraxia with compensatory strategies. There is clearly a need for adequately designed studies in this area, which should take into account specific problems such as patient heterogeneity and treatment standardization.

EFNS guidelines on cognitive rehabilitation: report of an EFNS task force

In 1999, a Task Force was set up under the auspices of the European Federation of Neurological Societies with the aim to evaluate the existing evidence for the clinical effectiveness of cognitive rehabilitation. This review led to the development of a set of guidelines to be used in the management of adult patients with cognitive disorders due to acquired focal neurological damage.