Environmental and behavioural modifications for improving food and fluid intake in people with dementia

Occupational Therapy Practice Guidelines for Adults Living With Alzheimer's Disease and Related Neurocognitive Disorders

IMPORTANCE

There are currently 55 million adults living with declining functional cognition-altered perception, thoughts, mood, or behavior-as the result of Alzheimer's disease (AD) and related neurocognitive disorders (NCDs). These changes affect functional performance and meaningful engagement in occupations. Given the growth in demand for services, occupational therapy practitioners benefit from consolidated evidence of effective interventions to support adults living with AD and related NCDs and their care partners.

OBJECTIVE

These Practice Guidelines outline effective occupational therapy interventions for adults living with AD and related NCDs and interventions to support their care partners.

METHOD

We synthesized the clinical recommendations from a review of recent systematic reviews.

RESULTS

Twelve systematic reviews published between 2018 and 2021 served as the foundation for the practice recommendations.

CONCLUSION AND RECOMMENDATIONS

Reminiscence, exercise, nonpharmacological behavioral interventions, cognitive therapy, sensory interventions, and care partner education and training were found to be most effective to support adults living with AD and related NCDs. Plain-Language Summary: These Practice Guidelines provide strong and moderate evidence for occupational therapy practitioners to support adults living with Alzheimer's disease (AD) and related neurocognitive disorders (NCDs) and their care partners. They provide specific guidance for addressing the decline in cognition, behavioral and psychological symptoms of dementia, and pain experience of adults living with AD and related NCDs. The guidelines also describe interventions to support care partners. With support from the evidence, occupational therapy practitioners are better equipped to address the unique needs of adults living with AD and related NCDs and their care partners.

Person-centred oral hydration care for older people with dementia admitted to acute hospital wards: Empirical research qualitative

AIMS AND OBJECTIVES

To conduct an in-depth exploration of oral hydration care provided to people living with dementia in acute hospital wards, using a person-centred care framework.

BACKGROUND

Oral hydration care is an important, yet rarely explored aspect of fundamental care for people with dementia admitted to acute hospitals. Using person-centred care as a conceptual framework we investigated how oral hydration care is delivered for people living with dementia in acute hospital wards.

DESIGN

A qualitative, multiple-case study. The cases were three acute wards in one hospital.

METHODS

Direct observation of care for 13 people with dementia (132 h), semistructured interviews with ward staff (n = 28), ward leaders (n = 4), organisational leaders (n = 5), people with dementia (n = 6), their relatives (n = 5), documentary analysis of clinical inpatient records (n = 26) and relevant hospital policies. Data were analysed using framework analysis.

RESULTS

Four themes were identified: (1) The acute hospital: oral hydration is obscured and not prioritised (2) Overshadowing of oral hydration at ward level (3) Siloed nature of hydration roles (4) Strategies for, and barriers to, delivering person-centred oral hydration care.

CONCLUSIONS

This study combines the concept of person-centred care and oral hydration care for people living with dementia admitted to acute hospital wards, demonstrating that person-centred hydration care was complex and not prioritised.

RELEVANCE TO CLINICAL PRACTICE

Nurses should consider means of improving prioritisation and cohesive delivery of person-centred hydration care in acute hospital wards.

Relationship between antidementia medication and fracture prevention in patients with Alzheimer's dementia using a nationwide health insurance claims database

This retrospective study aimed to evaluate the association between antidementia medication use and incidence of new vertebral, hip, and radial fractures in patients with Alzheimer's dementia (AD). We used the nationwide health insurance claims database of Japan from 2012 to 2019 and identified 12,167,938 patients aged ≥ 65 years who were newly registered from April 2012 to March 2016 and had verifiable data receipt from half-year before to 3 years after the registration. Among these patients, 304,658 were diagnosed with AD and we showed the prescription status of antidementia and osteoporosis medication among them. Propensity score matching was conducted for AD group with and without antidementia medication use, and 122,399 matched pairs were yielded. The incidence of hip fractures (4.0% vs. 1.9%, p < 0.001) and all clinical fractures (10.5% vs. 9.0%, p < 0.001) significantly decreased and that of radial fractures increased (0.6% vs. 1.0%, p < 0.001) in AD patients with antidementia medication use compared with AD patients without antidementia medication use. No significant difference was found in vertebral fractures (6.6% vs. 6.5%, p = 0.51). Overall, these results suggest a positive relationship between antidementia medication use and fracture prevention in patients with AD.

Evaluating a brief intervention for mealtime difficulty on older adults with dementia

AIMS AND OBJECTIVE

To test a spaced retrieval intervention using spaced retrieval to alleviate mealtime difficulties in older people with dementia.

DESIGN

A single-case study design.

SETTING

Nursing Homes in North Central England, United Kingdom.

PARTICIPANTS

Older people with Alzheimer's disease.

METHODS

A single-case study using an ABA design was used. Data were collected using the Edinburgh Feeding Evaluation in Dementia scale, Mini Nutritional Assessment, and Body Mass Index before intervention, postintervention and following 3 months of postintervention. Realist evaluation was used to identify for which participants the intervention was effective, and an economic evaluation was also carried out.

FINDING

Of 15 participants who entered the study, eight completed all phases of the study. A mean 104.4 h were needed to deliver the intervention. The number of sessions required ranged from 90-222. The length of time each participant retained information (for all sessions) ranged from 13-28 min. Participants had most difficulty with: "putting food into mouth and chewing it"; "realizing it was mealtime"; and "eating a whole meal continuously." A reduction in the difficulty with mealtimes occurred between phase A1-A2 for most participants. Six participants maintained this in phase A3. Similar patterns were evident for nutritional scores. For most participants, the effect size of the intervention was moderate or large.

CONCLUSIONS

Spaced retrieval is useful in reducing mealtime difficulties in older participants with dementia. While the results of this study are promising, further large and multicentre trials are needed to explore the effectiveness of the intervention in diverse populations.

Resistance to Eating in People with Dementia Living in Long-term Care Facilities: Gaps between Common and Good Practices

OBJECTIVES

The present study aims to explore the perception of common and best practices for dealing with resistance to eating of persons with dementia living in long-term care facilities.

METHODS

Forty-two staff members working in long-term care facilities were interviewed. They worked in four Spanish long-term care facilities; 21 were nursing assistants and 21 technical staff. Participants heard a vignette in which person with dementia showed resistance to eating. Participants were asked how a situation like that is commonly managed by their workmates, and how the situation should be managed. Responses were content-analyzed.

RESULTS

Strategies mentioned by participants were quite diverse and did not converge on common ground that harmonizes their responses. Less than half of the participants considered person-centered strategies as a best practice. Those strategies were lower on assistant carers, compared to technical staff.

CONCLUSIONS

Resistance to eating is a common situation faced by professionals. Nonetheless, there is not a common procedure to deal with this situation. Resistance to eating was seen more as a problem to be eradicated than a behavior to be understood.

CLINICAL IMPLICATIONS

Staff development initiatives are necessary in relation to mealtime situations. They should consider work position and competencies needed by assistant carers.

Targeting gut microbiota to alleviate neuroinflammation in Alzheimer's disease

The gut microbiota came into focus within the last years regarding being associated with or even underlying neuropsychiatric diseases. The existence of the gut-brain-axis makes it highly plausible that bacterial metabolites or toxins that escape the intestinal environment or approach the vagal connections towards the brain, exert devastating effects on the central nervous system. In Alzheimer's disease (AD), growing evidence for dysbiotic changes in the gut microbiota is obtained, even though the question for cause or consequence remains open. Nevertheless, using modulation of microbiota to address inflammatory processes seems an attractive therapeutic approach as certain microbial products such as short chain fatty acids have been proven to exert beneficial cognitive effects. In this review, we summarize, contemporary knowledge on neuroinflammation and inflammatory processes within the brain and even more detailed in the gut in AD, try to conclude whom to target regarding human microbial commensals and report on current interventional trials.

Patients' and professionals' perspectives on the consideration of patients' convenient therapy periods as part of personalised rehabilitation: a focus group study with patients and therapists from inpatient neurological rehabilitation

BACKGROUND

Research on the optimal period for administering health services, especially rehabilitation interventions, is scarce. The aims of this study were to explore the construct of patients' convenient therapy periods and to identify indicators based on the perspectives of patients and different health professionals from inpatient neurological rehabilitation clinics.

METHODS

This study was part of a larger project on patients' convenient therapy periods following a mixed methods approach. In the current study a grounded theory approach was employed based on the use of focus group interviews. Focus group interviews were conducted in three different inpatient neurological rehabilitation clinics. Patients and therapists from inpatient neurological rehabilitation clinics who were able to speak and to participate in conversations were included.

RESULTS

A total of 41 persons, including 23 patients and 18 therapists, such as music and occupational therapists, participated in a total of six focus group interviews. The analysis of the focus group interviews resulted in the identification of a total of 1261 codes, which could be summarised in fifteen categories. However, these categories could be divided into five indicators and ten impact factors of convenient therapy periods. Identified indicators were verbal and non-verbal communication, mental functions, physiological needs, recreational needs, and therapy initiation.

CONCLUSIONS

The results provide initial evidence that convenient therapy periods are clinically relevant for patients and therapists. Different states of patients' ability to effectively participate in a rehabilitation intervention exist. A systematic consideration of patients' convenient therapy periods could contribute to a personalised and more efficient delivery of intervention in neurological rehabilitation. To our knowledge, this study is one of the first attempts to research convenient therapy periods.

Montessori mealtimes for dementia: A pathway to person-centred care

PURPOSE

This study examined the impact of a Montessori mealtime intervention for people living with dementia to support the mealtime experience of residents and mealtime care practices of staff in a memory support unit. The mealtime intervention was part of a broader culture change project.

METHOD

An observational research design was used to evaluate changes in the mealtime experience and care practices across three time points (baseline, post-implementation, maintenance), spanning 30 months. Five video recordings of the lunch time service (range: 19-32 min) were analysed. The coding protocol comprised pre-determined indicators related to accepted dimensions of person-centred care. Resident and staff behaviours were quantified across four categories: providing choice and preferences, promoting the social side of eating, supporting independence and showing respect towards residents. Staff behaviours that reflected personal enhancing actions and personal detractors were also coded during each mealtime service.

RESULTS

A significant increase in staff providing residents with the opportunity for choice and a subsequent significant increase in residents demonstrating choice behaviours was evident. Staff and residents both significantly increased their interactional behaviours, with greater social interaction between staff and residents. Staff further demonstrated greater support for mealtime independence that reached and maintained significance during the final two sampling points. Significant gains observed post implementation were largely maintained and, on specific measures, further increased over time. A significant increase in staff use of personal enhancing actions during mealtime care was also evident. Variability in individual staff and resident behaviour highlighted the complexity of mealtime care and culture change processes.

IMPLICATIONS

The study provides novel evidence to support the use of a Montessori mealtime intervention to achieve more person-centred mealtime care, and which resulted in a more respectful, enabling and social dining experience. Clinical implications and direction for future research are presented to build on these findings.

Feasibility and Acceptability Testing of Evidence-Based Hydration Strategies for Residential Care

The current study examined stakeholder perspectives on the perceived effectiveness, feasibility, and acceptability of 20 evidence-based strategies appropriate for residential care via an online survey (N = 162). Most participants worked in long-term care (83%), were direct care providers (62%), worked in food/nutrition roles (55%), and identified as female (94%). Strategies that were rated as effective, feasible, and likely to be used in the future were social drinking events, increased drink options at meals, and pre-thickened drinks. Participants also listed their top strategies for inclusion in a multicomponent intervention. Responses to open-ended questions provided insight on implementation, compliance, and budget constraints. Participant perspectives provide insight into developing a multicomponent intervention. Strategies prioritized for such an intervention include: staff education, social drinking opportunities, drinks trolley, volunteer support, improved beverage availability, hydration reminders, offering preferred beverages, and prompting residents to drink using various cues. [Research in Gerontological Nursing, 15(1), 27-38.].

Health, social care and technological interventions to improve functional ability of older adults living at home: An evidence and gap map

Background

By 2030, the global population of people older than 60 years is expected to be higher than the number of children under 10 years, resulting in major health and social care system implications worldwide. Without a supportive environment, whether social or built, diminished functional ability may arise in older people. Functional ability comprises an individual's intrinsic capacity and people's interaction with their environment enabling them to be and do what they value.

Objectives

This evidence and gap map aims to identify primary studies and systematic reviews of health and social support services as well as assistive devices designed to support functional ability among older adults living at home or in other places of residence.

Search Methods

We systematically searched from inception to August 2018 in: MEDLINE, EMBASE, Cochrane Database of Systematic Reviews, CENTRAL, CINAHL, PsycINFO, AgeLine, Campbell Library, ASSIA, Social Science Citation Index and Social Policy & Practice. We conducted a focused search for grey literature and protocols of studies (e.g., ProQuest Theses and Dissertation Global, conference abstract databases, Help Age, PROSPERO, Cochrane and Campbell libraries and ClinicalTrials.gov).

Selection Criteria

Screening and data extraction were performed independently in duplicate according to our intervention and outcome framework. We included completed and on-going systematic reviews and randomized controlled trials of effectiveness on health and social support services provided at home, assistive products and technology for personal indoor and outdoor mobility and transportation as well as design, construction and building products and technology of buildings for private use such as wheelchairs, and ramps.

Data Collection and Analysis

We coded interventions and outcomes, and the number of studies that assessed health inequities across equity factors. We mapped outcomes based on the International Classification of Function, Disability and Health (ICF) adapted categories: intrinsic capacities (body function and structures) and functional abilities (activities). We assessed methodological quality of systematic reviews using the AMSTAR II checklist.

Main Results

After de-duplication, 10,783 records were screened. The map includes 548 studies (120 systematic reviews and 428 randomized controlled trials). Interventions and outcomes were classified using domains from the International Classification of Function, Disability and Health (ICF) framework. Most systematic reviews (n = 71, 59%) were rated low or critically low for methodological quality.The most common interventions were home-based rehabilitation for older adults (n = 276) and home-based health services for disease prevention (n = 233), mostly delivered by visiting healthcare professionals (n = 474). There was a relative paucity of studies on personal mobility, building adaptations, family support, personal support and befriending or friendly visits. The most measured intrinsic capacity domains were mental function (n = 269) and neuromusculoskeletal function (n = 164). The most measured outcomes for functional ability were basic needs (n = 277) and mobility (n = 160). There were few studies which evaluated outcome domains of social participation, financial security, ability to maintain relationships and communication.There was a lack of studies in low- and middle-income countries (LMICs) and a gap in the assessment of health equity issues.

Authors' Conclusions

There is substantial evidence for interventions to promote functional ability in older adults at home including mostly home-based rehabilitation for older adults and home-based health services for disease prevention. Remotely delivered home-based services are of greater importance to policy-makers and practitioners in the context of the COVID-19 pandemic. This map of studies published prior to the pandemic provides an initial resource to identify relevant home-based services which may be of interest for policy-makers and practitioners, such as home-based rehabilitation and social support, although these interventions would likely require further adaptation for online delivery during the COVID-19 pandemic. There is a need to strengthen assessment of social support and mobility interventions and outcomes related to making decisions, building relationships, financial security, and communication in future studies. More studies are needed to assess LMIC contexts and health equity issues.

Chronic Dehydration in Nursing Home Residents

Chronic dehydration mainly occurs due to insufficient fluid intake over a lengthy period of time, and nursing home residents are thought to be at high risk for chronic dehydration. However, few studies have investigated chronic dehydration, and new diagnostic methods are needed. Therefore, in this study, we aimed to identify risk factors for chronic dehydration by measuring serum osmolality in nursing home residents and also to evaluate whether examining the inferior vena cava (IVC) and determining the IVC collapsibility index (IVC-CI) by ultrasound can be helpful in the diagnosis of chronic dehydration. A total of 108 Japanese nursing home residents aged ≥65 years were recruited. IVC measurement was performed using a portable handheld ultrasound device. Fifteen residents (16.9%) were classified as having chronic dehydration (serum osmolality ≥295 mOsm/kg). Multivariate logistic regression analysis showed that chronic dehydration was associated with dementia (odds ratio (OR), 6.290; 95% confidential interval (CI), 1.270–31.154) and higher BMI (OR, 1.471; 95% CI, 1.105–1.958) but not with IVC or IVC-CI. Cognitive function and body weight of residents should be considered when establishing a strategy for preventing chronic dehydration in nursing homes.

Dysphagia and mealtime difficulties in dementia: Speech and language therapists' practices and perspectives

BACKGROUND

There is increasing recognition of the impact that dementia has upon swallowing and at mealtimes, and the significant effect this can have on people with dementia's health and well-being. However, there remains a paucity of evidence for assessment and intervention practices for dysphagia and mealtime difficulties. Furthermore, there is a limited understanding of how speech and language therapists (SLTs) support people with these dementia-related issues and what are the barriers and facilitators to practice. Further research is therefore needed to guide policy as well as service guideline and delivery development.

AIMS

To establish the current practices of SLTs managing dementia-related dysphagia and mealtime difficulties in the UK and Republic of Ireland (ROI), and to establish their opinions and experiences of what challenges or supports to practice they have encountered.

METHODS & PROCEDURES

An anonymous, cross-sectional web-based survey was developed and distributed to SLTs working in the UK and ROI. Respondents completed a questionnaire that consisted of open and closed questions across nine topic areas. Closed responses were evaluated using descriptive statistics; open-ended questions were analysed using conventional content analysis.

OUTCOMES & RESULTS

A total of 310 people accessed the survey, and 125 respondents completed it fully. While respondents agreed on their role in dysphagia management, they varied in their views on the extent of their role in managing mealtime difficulties. Additionally, their self-rated knowledge of mealtime difficulties in dementia was lower than their dysphagia knowledge. The respondents predominantly based their management decisions on their clinical experience of working with people with dementia. They primarily used compensatory strategies and frequently cited the need for family and care staff training. Respondents also highlighted barriers to effective management and training provision such as inefficient referral systems, a lack of carer knowledge and lack of SLT resources.

CONCLUSIONS & IMPLICATIONS

The results provide valuable insight into the issues facing SLTs practising in this area. The SLTs surveyed considered dysphagia a core part of their role when supporting people with dementia; however, respondents' views on mealtime difficulties varied. This highlights the need to establish consensus guidelines on the SLT's role in order to avoid variations in service delivery that could negatively impact the health and well-being of people with dementia. Moreover, further research to develop efficient and effective training for care staff supporting mealtime difficulties and dysphagia is essential. What this paper adds What is already known on the subject Research indicates that people with dementia develop dysphagia and mealtime difficulties as dementia progresses. SLTs often manage these, but there is no research on the effective assessment and management procedures, or guidance on best practice. What this paper adds to existing knowledge This paper provides an understanding of the variation in practice across the UK and ROI. Respondents described barriers to delivering an effective service and frequently linked these to the SLTs' resources as well as service constraints. What are the potential or actual clinical implications of this work? These findings support the need for future research to develop guidelines for SLT practice in this area. They also support the need to examine resource allocation and workforce management to enable SLTs to manage dementia-related dysphagia and mealtime difficulties effectively.

A cluster randomized controlled trial to assess the efficacy of a telehealth-based train-the-trainer mealtime intervention delivered by respite care center volunteers to caregivers of persons with dementia to improve nutritional outcomes and quality of life

BACKGROUND

Persons with dementia with mild to moderate cognitive impairment are at risk for developing impairments with activities of daily living such as the ability to feed oneself, that negatively influence health. Lack of caregiver skills related to mealtime planning for persons with dementia and the ability to cope with dysfunctional behaviors are well-documented factors that influence nutritional status outcomes, lead to weight loss, poor quality of life, and impact their ability to remain at home.

METHODS

A cluster randomized controlled trial with a parallel mixed methods evaluation processes will be conducted to examine the efficacy of a train-the-trainer program using non-paid volunteers in respite care centers to deliver a telehealth mealtime intervention guided by the theory-based C3P Model-Change the Person, Change the People, Change the Place (C3P). In this six-month study, dyads of caregivers and persons with mild to moderate dementia receiving respite care services will be randomized to receive either the telehealth intervention or enhanced usual care. Within the intervention group, dyads will be partnered with a C3P trained volunteer who will work with caregivers via videoconference to devise and implement mealtime plans. Under usual care, dyads will receive standardized educational materials modified from The Savvy Caregiver Program for Alzheimer's disease. The primary outcomes include weight maintenance or gain of the person with dementia and quality of life of the caregiver. A multi-level evaluation process utilizing respite center administrators and directors, volunteers, and caregivers will explore intervention fidelity, acceptability and sustainability. Using both the CONSORT and SPIRIT checklists as guidance, the comprehensive study design is more fully described in this manuscript.

DISCUSSION

In this trial, we will lay the groundwork to examine the efficacy and sustainability of a train-the-trainer telehealth program that could be widely disseminated by national Alzheimer's organizations and readily adopted by community agencies to provide additional resources to assist families in managing mealtimes at home, while promoting the quality of life of both the caregiver and the person with dementia.

TRIAL REGISTRATION

This study was registered with clinicaltrials.gov: NCT03622814 on August 9, 2018..

Enhancing independent eating among older adults with dementia: a scoping review of the state of the conceptual and research literature

Background

Addressing eating difficulties among older individuals with dementia living in nursing homes requires evidence-based interventions. However, to date, there is limited evidence of effective interventions designed to maintain and/or increase independent eating. In a field in which evidence is still lacking, a critical analysis of the state of research describing its main features can help identify methodological gaps that future studies should address. Hence, the aim of this study was to map the state of the research designed to maintain and/or promote independent eating in older individuals with dementia living in nursing homes.

Methods

A scoping review was performed by following the Preferred Reporting Items for Systematic Reviews and Meta-analyses. Reviews and conceptual analyses performed with different methodological approaches, published in indexed journals, and written in English were included. Keywords Were searched for in the MEDLINE, the Cumulative Index of Nursing and Allied Health, and in the Scopus databases to identify papers published up to 31 May 2018.

Results

17 reviews were included, assessing interventions’ effectiveness (n = 15) and providing conceptual frameworks for eating/mealtime difficulties (n = 2). Conceptual frameworks supporting interventions’ effectiveness have rarely been described in available studies. Moreover, interventions tested have been categorized according to non-homogeneous frameworks. Their effectiveness has been measured against (1) eating performance, (2) clinical outcomes, and (3) adverse event occurrence.

Conclusion

An increased use of conceptual frameworks in studies, as well as greater clarity in intervention categorization and outcomes, is necessary to enhance the reviews’ value in providing useful cumulative knowledge in this field. Interventions delivered should embody different components that integrate individual, social, cultural, and environmental factors, while when evaluating an intervention’s effectiveness, eating performance, clinical outcomes and adverse events should be considered. Together with more robust studies, involving clinicians could prove to be useful, as their knowledge of practice developed from direct experience can help develop innovative research questions.

A path analysis on the direct and indirect effects of the unit environment on eating dependence among cognitively impaired nursing home residents

BACKGROUND

This study aims to estimate the direct and indirect effects of the unit environment alongside individual and nursing care variables on eating dependence among residents who are cognitively impaired and living in a nursing home.

METHOD

A multicentre observational study was carried out in 2017: 13 Italian nursing homes were involved in data collection. Included residents were aged > 65 at baseline, living in the considered facility for the last 6 months and during the entire study period and having received at least one comprehensive assessment. Data were collected (a) at the individual level: eating dependence using the Edinburgh Feeding Evaluation in Dementia Scale and other clinical variables; (b) at the nursing care level with daily interventions to maintain eating independence assessed with a checklist; and (c) at the nursing home level, using the Therapeutic Environment Screening Survey for Nursing Homes.

RESULTS

One thousand twenty-seven residents were included with an average age of 85.32 years old (95% CI: 84.74-85.89), mainly female (781; 76%). The path analysis explained the 57.7% variance in eating dependence. Factors preventing eating dependence were: (a) at the individual level, increased functional dependence measured with the Barthel Index (β - 2.374); eating in the dining room surrounded by residents (β - 1.802) as compared to eating alone in bed; and having a close relationship with family relatives (β - 0.854), (b) at the nursing care level, the increased number of interventions aimed at promoting independence (β - 0.524); and (c) at the NH level, high scores in 'Space setting' (β - 4.446), 'Safety' (β - 3.053), 'Lighting' (β - 2.848) and 'Outdoor access' (β - 1.225). However, environmental factors at the unit level were found to have also indirect effects by influencing the degree of functional dependence, the occurrence of night restlessness and the number of daily interventions performed by the nursing staff.

CONCLUSION

Eating dependence is a complex phenomenon requiring interventions targeting individual, nursing care, and environmental levels. The NH environment had the largest direct and indirect effect on residents' eating dependence, thus suggesting that at this level appropriate interventions should be designed and implemented.

Environmental and behavioural modifications for improving food and fluid intake in people with dementia

BACKGROUND

Weight loss, malnutrition and dehydration are common problems for people with dementia. Environmental modifications such as, change of routine, context or ambience at mealtimes, or behavioural modifications, such as education or training of people with dementia or caregivers, may be considered to try to improve food and fluid intake and nutritional status of people with dementia.

OBJECTIVES

Primary: To assess the effects of environmental or behavioural modifications on food and fluid intake and nutritional status in people with dementia. Secondary: To assess the effects of environmental or behavioural modifications in connection with nutrition on mealtime behaviour, cognitive and functional outcomes and quality of life, in specific settings (i.e. home care, residential care and nursing home care) for different stages of dementia. To assess the adverse consequences or effects of the included interventions.

SEARCH METHODS

We searched the Specialized Register of Cochrane Dementia and Cognitive Improvement (ALOIS), MEDLINE, Eembase, PsycINFO, CINAHL, ClinicalTrials.gov and the World Health Organization (WHO) portal/ICTRP on 17 January 2018. We scanned reference lists of other reviews and of included articles.

SELECTION CRITERIA

We included randomised controlled trials (RCTs) investigating interventions designed to modify the mealtime environment of people with dementia, to modify the mealtime behaviour of people with dementia or their caregivers, or both, with the intention of improving food and fluid intake. We included people with any common dementia subtype.

DATA COLLECTION AND ANALYSIS

Two review authors independently selected studies, extracted data and assessed the risk of bias of included trials. We assessed the quality of evidence for each outcome using the GRADE approach.

MAIN RESULTS

We included nine studies, investigating 1502 people. Three studies explicitly investigated participants with Alzheimer's disease; six did not specify the type of dementia. Five studies provided clear measures to identify the severity of dementia at baseline, and overall very mild to severe stages were covered. The interventions and outcome measures were diverse. The overall quality of evidence was mainly low to very low.One study implemented environmental as well as behavioural modifications by providing additional food items between meals and personal encouragement to consume them. The control group received no intervention. Differences between groups were very small and the quality of the evidence from this study was very low, so we are very uncertain of any effect of this intervention.The remaining eight studies implemented behavioural modifications.Three studies provided nutritional education and nutrition promotion programmes. Control groups did not receive these programmes. After 12 months, the intervention group showed slightly higher protein intake per day (mean difference (MD) 0.11 g/kg, 95% confidence interval (CI) -0.01 to 0.23; n = 78, 1 study; low-quality evidence), but there was no clear evidence of a difference in nutritional status assessed with body mass index (BMI) (MD -0.26 kg/m² favouring control, 95% CI -0.70 to 0.19; n = 734, 2 studies; moderate-quality evidence), body weight (MD -1.60 kg favouring control, 95% CI -3.47 to 0.27; n = 656, 1 study; moderate-quality evidence), or score on Mini Nutritional Assessment (MNA) (MD -0.10 favouring control, 95% CI -0.67 to 0.47; n = 656, 1 study; low-quality evidence). After six months, the intervention group in one study had slightly lower BMI (MD -1.79 kg/m² favouring control, 95% CI -1.28 to -2.30; n = 52, 1 study; moderate-quality evidence) and body weight (MD -8.11 kg favouring control, 95% CI -2.06 to -12.56; n = 52, 1 study; moderate-quality evidence). This type of intervention may have a small positive effect on food intake, but little or no effect, or a negative effect, on nutritional status.Two studies compared self-feeding skills training programmes. In one study, the control group received no training and in the other study the control group received a different self-feeding skills training programme. For both comparisons the quality of the evidence was very low and we are very uncertain whether these interventions have any effect.One study investigated general training of nurses to impart knowledge on how to feed people with dementia and improve attitudes towards people with dementia. Again, the quality of the evidence was very low so that we cannot be certain of any effect.Two studies investigated vocal or tactile positive feedback provided by caregivers while feeding participants. After three weeks, the intervention group showed an increase in calories consumed per meal (MD 200 kcal, 95% CI 119.81 to 280.19; n = 42, 1 study; low-quality evidence) and protein consumed per meal (MD 15g, 95% CI 7.74 to 22.26; n = 42, 1 study; low-quality evidence). This intervention may increase the intake of food and liquids slightly; nutritional status was not assessed.

AUTHORS' CONCLUSIONS

Due to the quantity and quality of the evidence currently available, we cannot identify any specific environmental or behavioural modifications for improving food and fluid intake in people with dementia.