Effectiveness of Interventions Designed to Modify and Maintain Perceptual Abilities in People With Alzheimer’s Disease and Related Dementias

Effectiveness of Interventions for Preventing People With Dementia Exiting or Getting Lost

BACKGROUND AND OBJECTIVES

People with dementia are at risk of exiting premises unsupervised, eloping, or getting lost, potentially leading to harmful or distressing consequences. This review aimed to estimate the effectiveness of interventions for preventing people with dementia from exiting or getting lost.

RESEARCH DESIGN AND METHODS

A systematic review of English sources was undertaken. Health care (EMBASE, BNI, Medline, PubMed, CINAHL, PsycINFO, AMED, HTA, CENTRAL) and gray literature (OpenGrey) databases were searched using prespecified search terms. Additional studies were identified by hand-searching bibliographies of relevant reviews and included studies. Wide inclusion criteria were set to capture a range of intervention types. Data extraction and risk of bias assessment were completed independently by two reviewers. Methods were preregistered on PROSPERO.

RESULTS

Individual and overall risk of bias was too high for statistical meta-analyses. A narrative synthesis was therefore performed. Twenty-five studies with 814 participants were included, investigating a range of nonpharmacological interventions aiming to prevent exiting, facilitate retrieval, educate participants, or a combination of these. Seventeen (68%) of the included studies had critical risks of internal bias to outcomes, providing no useful evidence for the effectiveness of their respective interventions. The remaining 8 (32%) studies had serious risks of bias. Narrative synthesis of results yielded no overall robust evidence for the effectiveness of any interventions.

DISCUSSION AND IMPLICATIONS

No evidence was found to justify the recommendation of any interventions included in this review. Future studies should focus on high-quality, controlled study designs.

Sensory-Based Interventions for Adults with Dementia and Alzheimer's Disease: A Scoping Review

The purpose of this review was to explore the effectiveness of sensory-based interventions for clients with dementia and Alzheimer's disease living in residential facilities. Nine databases and key sources were searched from 2002 to September 2017. Forty-seven articles met the inclusion criteria. There was strong evidence for use of massage. There was moderate evidence for occupationally and environmentally based multisensory activities including light, gardening, mealtime, music, Montessori, animal assisted therapy, dance, and yoga interventions. There was inconclusive evidence for aromatherapy, art, Snoezelen rooms, and combined visual and auditory interventions. Future research should focus on defining protocols for efficacious interventions.

Diagnostic evaluation and monitoring of patients with posterior cortical atrophy

Posterior cortical atrophy (PCA) is a progressive neurocognitive syndrome, most commonly associated with the loss of complex visuospatial functions. Diagnosis is challenging, and international consensus classification and nomenclature for PCA subtypes have only recently been reached. Presently, no established treatments exist. Efforts to develop treatments are hampered by the lack of standardized methods to monitor illness progression. Although measures developed from work with Alzheimer's disease and other dementias provide a foundation for diagnosing and monitoring progression, PCA presents unique challenges for clinicians counseling patients and families on clinical status and prognosis, and experts designing clinical trials of interventions. Here, we review issues facing PCA clinical research and care, summarize our approach to diagnosis and monitoring of disease progression, and outline ideas for developing tools for these purposes.

Use of the physical environment to support everyday activities for people with dementia: A systematic review

Difficulty with everyday activities is a key symptom and defining feature of dementia, relating to subjective reports of well-being and overall quality of life. One way to support individuals in their daily activities is by modifying the physical environment to make it easier to interact with during activity performance. This systematic review explores the range of studies available using physical environmental strategies to support performance in everyday activities for people with dementia. Seventy-two relevant studies were identified by the search. Physical environmental strategies included changes to the global environment and to architectural features, use of moveable environmental aids and tailored individual approaches. Strategies supported general everyday activity functioning (N = 19), as well as specific activities, particularly mealtimes (N = 15) and orientation in space (N = 16); however, few studies were found that focused on aspects of personal care such as dressing (N = 1) and showering or the preferred hobbies of individuals (N = 0). Overall, there appeared to be a lack of research within private home environments, and of studies which specify the dementia syndrome or the whole neuropsychological profile of people with dementia. More work is needed to extend theoretical understandings of how people with dementia interact with their environments so that these spaces can be designed to further support activities of daily living performance. Future work in this field could also incorporate the perspectives and preferences of those living with dementia.

Effectiveness of Environment-Based Interventions That Address Behavior, Perception, and Falls in People With Alzheimer's Disease and Related Major Neurocognitive Disorders: A Systematic Review

OBJECTIVE

This systematic review evaluated the effectiveness of environment-based interventions that address behavior, perception, and falls in the home and other settings for people with Alzheimer's disease (AD) and related major neurocognitive disorders (NCDs).

METHOD

Database searches were limited to outcomes studies published in English in peer-reviewed journals between January 2006 and April 2014.

RESULTS

A total of 1,854 articles were initially identified, of which 42 met inclusion criteria.

CONCLUSION

Strong evidence indicates that person-centered approaches can improve behavior. Moderate evidence supports noise regulation, environmental design, unobtrusive visual barriers, and environmental relocation strategies to reduce problematic behaviors. Evidence is insufficient for the effectiveness of mealtime ambient music, bright light, proprioceptive input, wander gardens, optical strategies, and sensory devices in improving behavior or reducing wandering and falls. Although evidence supports many environment-based interventions used by occupational therapy practitioners to address behavior, perception, and falls in people with AD and related major NCDs, more studies are needed.

Supporting Adults With Alzheimer's Disease and Related Major Neurocognitive Disorders and Their Caregivers: Effective Occupational Therapy Interventions

Occupational therapy practitioners play a significant role in supporting adults with Alzheimer's disease and related major neurocognitive disorders, as well as their caregivers, through all phases of the disease process. This editorial highlights the systematic reviews completed in collaboration with the American Occupational Therapy Association's Evidence-Based Practice Project that summarize the evidence for the effectiveness of interventions within the scope of occupational therapy practice for this population. Readers are encouraged to translate and integrate this updated knowledge into everyday practice.

Effectiveness of Interventions for Caregivers of People With Alzheimer’s Disease and Related Major Neurocognitive Disorders: A Systematic Review

OBJECTIVE. The goal of the evidence review was to evaluate the effectiveness of interventions for caregivers of people with Alzheimer’s disease and related major neurocognitive disorders that facilitate the ability to maintain participation in the caregiver role.

METHOD. Scientific literature published in English between January 2006 and April 2014 was reviewed. Databases included MEDLINE, PsycINFO, CINAHL, OTseeker, and the Cochrane Database of Systematic Reviews.

RESULTS. Of 2,476 records screened, 43 studies met inclusion criteria. Strong evidence shows that multicomponent psychoeducational interventions improve caregiver quality of life (QOL), confidence, and self-efficacy and reduce burden; cognitive reframing reduces caregiver anxiety, depression, and stress; communication skills training improves caregiver skill and QOL in persons with dementia; mindfulness-based training improves caregiver mental health and reduces stress and burden; and professionally led support groups enhance caregiver QOL.

CONCLUSION. Strong evidence exists for a spectrum of caregiver interventions. Translation of effective interventions into practice and evaluation of sustainability is necessary.

Design of residential environments for people with dementia and sight loss: A structured literature review

A structured literature review concerning the design of living environments for people with dementia and sight loss was conducted. Following systematic searching, 33 items were included and quality was assessed. Findings are described covering colour and contrast, lighting, fixtures and fittings, entrances and exits, gardens, and outdoors. The discussion highlights the poor quality of evidence, combined nevertheless with useful suggestions for design; the tendency for the literature to be fragmented; and the need for improvements in terms of study focus, study quality, and an emphasis on independence and individual needs. The review was subsequently used to inform the development of design guidelines.

Psychosocial interventions for people with dementia: An overview and commentary on recent developments

An influential review in 2010 concluded that non-pharmacological multi-component interventions have positive effects on cognitive functioning, activities of daily living, behaviour and mood of people with dementia. Our aim here is to provide an up-to-date overview of research into psychosocial interventions and their impact on psychosocial outcomes. We focused on randomised controlled trials, controlled studies and reviews published between October 2008 and August 2015, since the earlier review. The search of PsychInfo, Medline and the Cochrane database of systematic reviews yielded 61 relevant articles, organised into four themes echoing key phases of the care pathway: Living at home with dementia (five reviews, eight studies), carer interventions (three reviews, four studies), interventions in residential care (16 reviews, 12 studies) and end-of-life care (three reviews, two studies), along with an additional group spanning community and institutional settings (six reviews, two studies). Community findings suggested that appointment of dementia specialists and attention to case management can produce positive outcomes; physical therapies, cognitive training and modified cognitive behaviour therapy also had a range of benefits. There was more limited evidence of positive benefits for people with dementia through interventions with family carers. Thirty-two articles focused on the management of 'behavioural symptoms' through a range of interventions all of which had some evidence of benefit. Also a range of multi-component and specific interventions had benefits for cognitive, emotional and behavioural well-being of people with dementia in residential settings, as well as for quality of life. Overall, interventions tended to be short term with impact only measured in the short term. We recommend further research on interventions to promote living well in the community post-diagnosis and to address end-of-life care. Development of psychosocial interventions would benefit from moving beyond the focus on control of behaviours to focus on wider aspects of life for people with dementia.

Evaluating the inclusivity of hospital wayfinding systems for people with diverse needs and abilities

OBJECTIVES

Wayfinding in hospitals is a complex problem since patients, who are likely to be under stress, may have to navigate their way to multiple locations in the course of a single visit. While good wayfinding design can reduce stress, poor wayfinding can not only increase individuals' anxiety but also generate additional costs for the hospital due to: lost time among staff members who need to direct patients rather than concentrate on their designated task; missed appointments or delayed meetings; and additional security staff to ensure that patients do not enter restricted areas. We investigated to what extent a questionnaire, developed by collecting data about the subjective experiences of wayfinders with diverse needs and abilities, could uncover wayfinding problems in hospitals.

METHODS

The methodology we developed involved four steps: creating an initial questionnaire based on the literature; customizing the questionnaire to a hospital environment; validating and verifying the questionnaire; and evaluating the questionnaire's added value at nine other hospitals.

RESULTS

The questionnaire's generality and added value were demonstrated since many types of wayfinding problems were uncovered at the nine hospitals that other methods had overlooked or regarded as relatively unimportant. The research emphasizes the centrality and uniqueness of the wayfinder rather than that of the institute in determining what people need.

CONCLUSION

Our findings can contribute to understanding wayfinding issues in hospitals and to sensitize designers to the needs and knowledge levels of wayfinders when designing hospitals.

Cognitive testing for dementia is adversely affected by administration in a foreign location

BACKGROUND

It is colloquially considered that cognitive tests can be adversely affected by administration in a foreign location. However, a definitive demonstration of this is lacking in the literature. To determine whether or not this is the case, we compared the results of cognitive testing in a familiar versus foreign environment by single test administrator of individuals diagnosed with Alzheimer's disease randomized to placebo in a multi-site clinical study.

FINDINGS

Cognitive tests were administered to 6 long-term residents of an assisted living facility at their residence (the "Familiar" cohort). The identical tests were administered to a newly admitted resident and to 2 community-dwelling individuals who drove to the administrator's office for the first time (the "Foreign" cohort). Secondary testing was administered 3 months later at the same respective locations. Caregivers of participants completed reports of mood, behavior and activities of daily living. The Familiar cohort performed equally well at both visits. The Foreign cohort performed significantly worse than the Familiar cohort at baseline. They improved statistically, and matched Familiar cohort performance, by their second visit. Caregiver reports for both cohorts were unchanged between visits.

CONCLUSIONS

These findings support the notion that a foreign location can adversely affect performance on cognitive tests, and therefore support cognitive testing in a familiar location.

Update on productive aging research in the American Journal of Occupational Therapy, 2013, and overview of research published 2009-2013

In light of the Centennial Vision charge of supporting practice through evidence, this article reviews productive aging research published in the American Journal of Occupational Therapy (AJOT) in 2013 and as a whole from 2009 to 2013. Thirteen such articles were published in 2013, consisting of 4 systematic reviews that identified effective occupational therapy interventions for older adults with low vision; 1 randomized controlled trial that examined changes in occupational therapists' mental health practices with DVD training; and 8 descriptive articles addressing instrument development, practitioner decision making, patient management of medications, and effects of task activities on pain and participation levels. From 2009 to 2013, the quantity and quality of AJOT articles on productive aging increased; 63 articles were published, including 24 effectiveness studies, 14 basic research studies, 15 articles on instrument development and testing, 1 article linking occupational engagement and health, 6 articles on professional education, and 3 articles addressing professional questions.

Measuring Function in Chronic Progressive Disorders

Challenges for practitioners include development of reliable and valid assessment tools, effective interventions, and methods to improve intervention adherence; this editorial focuses on selecting assessment tools and measuring function in chronic progressive disorders.

Update on productive aging in the American Journal of Occupational Therapy 2011

A review of the productive aging articles published in the American Journal of Occupational Therapy during 2011 was conducted and discussed in light of meeting the Centennial Vision charge of supporting practice through evidence. Twelve articles that specifically addressed productive aging were published in AJOT in 2011. The review of these 12 articles found seven Level I studies. Six of the articles were systematic reviews identifying effective interventions for people with Alzheimer's disease and related dementias and their caregivers, and 1 was a randomized controlled trial of fall prevention in community-dwelling older adults. Five were basic research studies. Two of the 5 studies researched professional issues, and 3 addressed client-based issues. The quantity of productive aging research published in 2011 was consistent with the quantity reported in 2009 and 2010. More studies building the body of evidence about the effectiveness of occupational therapy with older adults are needed.