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Sleep disturbance affects all aspects of mental and physical functioning and quality of life and may lead to or worsen Alzheimer’s disease. Sleep disturbances in people with dementia living at home predicts care home admission and carer distress. Estimates of the prevalence of sleep disturbance vary, and it is unclear how prevalence rates differ according to setting. We conducted the first systematic review and meta-analysis on the prevalence of sleep disturbances in people living with dementia in the community. We aimed to examine demographic predictors and whether overall prevalence has changed over time.
Methods:
We searched Embase, MEDLINE and PsycINFO for studies reporting the prevalence of sleep disturbances in people with dementia living at home. We meta-analysed data and calculated the pooled prevalence of sleep disturbances in people with dementia overall and in dementia subtypes. We used meta-regressions to investigate the effects of study characteristics, publication dates and participant demographics.
Results:
Eleven studies fulfilled the inclusion criteria. The pooled prevalence of any symptoms of sleep disturbance was 26% (95% confidence intervals (CI): 23-30%; n= 2719) and of clinically significant sleep disturbance 19% (95% CI: 13-25%; n= 2753). The pooled prevalence of sleep disturbance symptoms was significantly lower among people with Alzheimer’s disease (24%; 95% CI: 16-33%, n=310) than Lewy body dementia (49%; 95% CI: 37-61%, n=65). Meta-regression analysis did not find that publication year, participant’s age, sex and study quality predicted prevalence.
Conclusion:
Sleep disturbances are common among people with dementia living in the community, especially in Lewy body dementia. There was no change in prevalence according to publication dates (between 2002 and 2018). This suggests that possible advances in treatment of sleep disturbance are not reflected in improvements for people living with dementia. This highlights the need to develop effective intervention strategies, reducing the prevalence of sleep disturbances in people living with dementia living at home in the community.
The numbers of older people experiencing both homelessness and Alzheimer’s disease and related dementias are growing, yet their complex health, housing and care needs remain undelineated and unmet. Older people experiencing homelessness have high levels of memory and cognitive impairment relative to stably housed age equivalent populations. In this study we aim to address a critical gap in understanding what can improve the care, support and experiences of older people experiencing homelessness with memory and other cognitive impairments.
Objectives:
To explore how stakeholders understand and experience memory problems among older people experiencing homelessness. We consider what they perceive to be meaningful outcomes for those living with memory problems and those supporting them and what gets in the way of achieving good care and support for these individuals.
Method:
We conducted reflexive thematic analysis of qualitative interviews (n=49) with 17 older people (aged ≥50 years) experiencing memory and other cognitive problems and homelessness, 15 hostel staff and managers, and 17 health, housing and social care practitioners working in England.
Results:
We identified four overarching themes. The population is not taken seriously; you ‘can’t see the wood for the trees’; risk of exploitation and vulnerability; and (dis)connection and social isolation. The transience of homelessness intensified the disorienting nature of memory and cognitive impairment. Older people experiencing homelessness and memory problems fall through gaps in service provision further fragmenting their lived experiences and intensified by cognitive difficulties. Those providing direct and indirect support required flexibility and persistence to advocate, provide care and safeguard individuals, with staff moving beyond traditionally commissioned roles to advocate, provide care and safeguard individuals.
Conclusions:
Efforts to meet the needs of older people living with Alzheimer’s disease and related dementias and experiencing homelessness must reflect the complexity their lives and current service provision. These findings have been used to co-design a psychosocial care and support intervention for hostel staff to be tested in a feasibility trial.
As in other countries, Portuguese family caregivers have unmet needs regarding information and distress. START (STrAtegies for RelaTives) is a manual-based coping intervention for families of people with dementia, including coping strategies and stress-management components, by Livingston and colleagues (https://www.ucl.ac.uk/psychiatry/research/mental-health-older-people/projects/start). In the UK, START has been clinically effective, immediately and continuing even after 6-years, without increasing costs. Clinical training and supervision ensures treatment fidelity. In Portugal, these kind of interventions are less available and, when provided, are mostly supportive and fail to address coping strategies. Paradoxically, recruitment may also prove challenging.
Objectives
We describe the development of the Portuguese translation of START, incorporating guidance from the UK team, and a pilot study of delivery to family caregivers of people with dementia. We will also discuss the challenges of recruiting participants and delivering the intervention.
Method
We translated the START intervention and recruited family caregivers from neurology and psychiatry outpatients, in a central hospital in Lisbon. Our baseline assessment included the Hospital Anxiety and Depression Scale and the Zarit Burden Interview. The pilot is still ongoing at time of submitting, so we focus on recruitment, baseline assessments and process issues.
Results
During a three-month period, we recruited six caregivers. Five were primary caregivers (spouses or adult children) who had been caring for their relatives for 2 up to 10 years. Two caregivers met the international cutoff for clinically relevant affective disorder . The most frequent motivators for taking part were learning to communicate with their relatives and increasing knowledge to build community resources. Overall, the subjective impression of the therapist in charge is that the intervention seems acceptable and promising.
Discussion/Conclusions
This pilot study will eventually lead to an improved version of the Portuguese version of the START manual. So far, the intervention seems appropriate for selected caregivers in Portugal. However, response to striking unmet needs, particularly basic home support, may need to precede interventions like START. We look forward to concluding the intervention study and analyzing the implementation challenges, as a basis to inform a wider-scale trial.
The START (STrAtegies for RelaTives) intervention reduced depressive and anxiety symptoms of family carers of relatives with dementia at home over 2 years and was cost-effective.
Aims
To assess the clinical effectiveness over 6 years and the impact on costs and care home admission.
Method
We conducted a randomised, parallel group, superiority trial recruiting from 4 November 2009 to 8 June 2011 with 6-year follow-up (trial registration: ISCTRN 70017938). A total of 260 self-identified family carers of people with dementia were randomised 2:1 to START, an eight-session manual-based coping intervention delivered by supervised psychology graduates, or to treatment as usual (TAU). The primary outcome was affective symptoms (Hospital Anxiety and Depression Scale, total score (HADS-T)). Secondary outcomes included patient and carer service costs and care home admission.
Results
In total, 222 (85.4%) of 173 carers randomised to START and 87 to TAU were included in the 6-year clinical efficacy analysis. Over 72 months, compared with TAU, the intervention group had improved scores on HADS-T (adjusted mean difference −2.00 points, 95% CI −3.38 to −0.63). Patient-related costs (START versus TAU, respectively: median £5759 v. £16 964 in the final year; P = 0.07) and carer-related costs (median £377 v. £274 in the final year) were not significantly different between groups nor were group differences in time until care home (intensity ratio START:TAU was 0.88, 95% CI 0.58–1.35).
Conclusions
START is clinically effective and this effect lasts for 6 years without increasing costs. This is the first intervention with such a long-term clinical and possible economic benefit and has potential to make a difference to individual carers.
Declarations of interest
G.L., Z.W. and C.C. are supported by the UCLH National Institute for Health Research (NIHR) Biomedical Research Centre. G.L. and P.R. were in part supported by the National Institute for Health Research (NIHR) Collaboration for Leadership in Applied Health Research and Care (CLAHRC) North Thames at Bart's Health NHS Trust. The views expressed are those of the author(s) and not necessarily those of the NHS, the NIHR or the Department of Health. Z.W. reports during the conduct of the study; personal fees from GE Healthcare, grants from GE Healthcare, grants from Lundbeck, other from GE Healthcare, outside the submitted work.
Chapter 1 discusses the welcome drop in early death and the corresponding rise in the numbers of older people and those with dementia. In tandem with the rise in the numbers of older people throughout the world comes the increase in the numbers of family carers who are looking after them. More than 70% of people with dementia in high-income countries live in their own homes supported mainly by family [1,2]. In low- and middle-income countries there is less care home provision and thus a higher percentage of people with dementia live at home [3].
40% of people with dementia have disturbed sleep but there are currently no known effective treatments. Studies of sleep hygiene and light therapy have not been powered to indicate feasibility and acceptability and have shown 40–50% retention. We tested the feasibility and acceptability of a six-session manualized evidence-based non-pharmacological therapy; Dementia RElAted Manual for Sleep; STrAtegies for RelaTives (DREAMS-START) for sleep disturbance in people with dementia.
Methods:
We conducted a parallel, two-armed, single-blind randomized trial and randomized 2:1 to intervention: Treatment as Usual. Eligible participants had dementia and sleep disturbances (scoring ≥4 on one Sleep Disorders Inventory item) and a family carer and were recruited from two London memory services and Join Dementia Research. Participants wore an actiwatch for two weeks pre-randomization. Trained, clinically supervised psychology graduates delivered DREAMS-START to carers randomized to intervention; covering Understanding sleep and dementia; Making a plan (incorporating actiwatch information, light exposure using a light box); Daytime activity and routine; Difficult night-time behaviors; Taking care of your own (carer's) sleep; and What works? Strategies for the future. Carers kept their manual, light box, and relaxation recordings post-intervention. Outcome assessment was masked to allocation. The co-primary outcomes were feasibility (≥50% eligible people consenting to the study) and acceptability (≥75% of intervention group attending ≥4 intervention sessions).
Results:
In total, 63out of 95 (66%; 95% CI: 56–76%) eligible referrals consented between 04/08/2016 and 24/03/2017; 62 (65%; 95% CI: 55–75%) were randomized, and 37 out of 42 (88%; 95% CI: 75–96%) adhered to the intervention.
Conclusions:
DREAM-START for sleep disorders in dementia is feasible and acceptable.
Agitation is reportedly the most common neuropsychiatric symptom in care home residents with dementia.
Aims
To report, in a large care home survey, prevalence and determinants of agitation in residents with dementia.
Method
We interviewed staff from 86 care homes between 13 January 2014 and 12 November 2015 about residents with dementia with respect to agitation (Cohen-Mansfield Agitation Inventory (CMAI)), quality of life (DEMQOL-proxy) and dementia severity (Clinical Dementia Rating). We also interviewed residents and their relatives. We used random effects models adjusted for resident age, gender, dementia severity and care home type with CMAI as a continuous score.
Results
Out of 3053 (86.2%) residents who had dementia, 1489 (52.7%) eligible residents participated. Fifteen per cent of residents with very mild dementia had clinically significant agitation compared with 33% with mild (odds ratios (ORs)=4.49 95% confidence interval (CI)=2.30) and 45% with moderate or severe dementia (OR=6.95 95% CI=3.63, 13.31 and OR=6.23 95% CI=3.25, 11.94, respectively). More agitation was associated with lower quality of life (regression coefficient (rc)=-0.53; 95% CI=-0.61, -0.46) but not with staffing or resident ratio (rc=0.03; 95% CI=-0.04, 0.11), level of residents' engagement in home activities (rc=3.21; 95% CI=-0.82, 7.21) or family visit numbers (rc=-0.03; 95% CI=-0.15, 0.08). It was correlated with antipsychotic use (rc=6.45; 95% CI=3.98, 8.91).
Conclusions
Care home residents with dementia and agitation have lower quality of life. More staffing time and activities as currently provided are not associated with lower agitation levels. New approaches to develop staff skills in understanding and responding to the underlying reasons for individual resident's agitation require development and testing.
Family carers of people with dementia frequently report acting abusively toward them and carer psychological morbidity predicts this. We investigated whether START (STrAtegies for RelaTives), a psychological intervention which reduces depression and anxiety in family carers also reduces abusive behavior in carers of people living in their own homes. We also explored the longitudinal course of carer abusive behavior over two year.
Methods:
We included self-identified family carers who gave support at least weekly to people with dementia referred in the previous year to three UK mental health services and a neurological dementia service. We randomly assigned these carers to START, an eight-session, manual-based coping intervention, or treatment as usual (TAU). Carer abusive behavior (Modified Conflict Tactic Scale (MCTS) score ≥2 representing significant abuse) was assessed at baseline, 4, 8, 12, and 24 months.
Results:
We recruited 260 carers, 173 to START and 87 to TAU. There was no evidence that abusive behavior levels differed between randomization groups or changed over time. A quarter of carers still reported significant abuse after two years, but those not acting abusively at baseline did not become abusive.
Conclusion:
There was no evidence that START, which reduced carer anxiety and depression, reduced carer abusive behavior. For ethical reasons, we frequently intervened to manage concerning abuse reported in both groups, which may have disguised an intervention effect. Future dementia research should include elder abuse as an outcome, and consider carefully how to manage detected abuse.
Most regional watersheds in Europe constitute managed human territories importing large amounts of new reactive nitrogen.
As a consequence, groundwater, surface freshwater and coastal seawater are undergoing severe nitrogen contamination and/or eutrophication problems.
Approaches
A comprehensive evaluation of net anthropogenic inputs of reactive nitrogen (NANI) through atmospheric deposition, crop N fixation, fertiliser use and import of food and feed has been carried out for all European watersheds. A database on N, P and Si fluxes delivered at the basin outlets has been assembled.
A number of modelling approaches based on either statistical regression analysis or mechanistic description of the processes involved in nitrogen transfer and transformations have been developed for relating N inputs to watersheds to outputs into coastal marine ecosystems.
Key findings/state of knowledge
Throughout Europe, NANI represents 3700 kgN/km²/yr (range, 0–8400 depending on the watershed), i.e. five times the background rate of natural N2 fixation.
A mean of approximately 78% of NANI does not reach the basin outlet, but instead is stored (in soils, sediments or ground water) or eliminated to the atmosphere as reactive N forms or as N2.
N delivery to the European marine coastal zone totals 810 kgN/km²/yr (range, 200–4000 depending on the watershed), about four times the natural background. In areas of limited availability of silica, these inputs cause harmful algal blooms.
Environmental problems related to nitrogen concern all economic sectors and impact all media: atmosphere, pedosphere, hydrosphere and anthroposphere.
Therefore, the integration of fluxes allows an overall coverage of problems related to reactive nitrogen (Nr) in the environment, which is not accessible from sectoral approaches or by focusing on specific media.
Approaches
This chapter presents a set of high resolution maps showing key elements of the N flux budget across Europe, including N2 and Nr fluxes.
Comparative nitrogen budgets are also presented for a range of European countries, highlighting the most efficient strategies for mitigating Nr problems at a national scale. A new European Nitrogen Budget (EU-27) is presented on the basis of state-of-the-art Europe-wide models and databases focusing on different segments of Europe's society.
Key findings
From c. 18 Tg Nr yr−1 input to agriculture in the EU-27, only about 7 Tg Nr yr−1 find their way to the consumer or are further processed by industry.
Some 3.7 Tg Nr yr−1 is released by the burning of fossil fuels in the EU-27, whereby the contribution of the industry and energy sectors is equal to that of the transport sector. More than 8 Tg Nr yr−1 are disposed of to the hydrosphere, while the EU-27 is a net exporter of reactive nitrogen through atmospheric transport of c. 2.3 Tg Nr yr−1.
The largest single sink for Nr appears to be denitrification to N2 in European coastal shelf regions (potentially as large as the input of mineral fertilizer, about 11 Tg N yr–1 for the EU-27); however, this sink is also the most uncertain, because of the uncertainty of Nr import from the open ocean.
Anthropogenic increase of nitrogen in water poses direct threats to human and aquatic ecosystems. High nitrate concentrations in drinking water are dangerous for human health. In aquatic ecosystems the nitrogen enrichment produces eutrophication, which is responsible for toxic algal blooms, water anoxia, fish kills and habitat and biodiversity loss.
The continuous nitrogen export to waters reduces the capacity of aquatic ecosystems to absorb, reorganise and adapt to external stress, increasing their vulnerability to future unexpected natural or climate events.
Key findings/state of knowledge
Nitrogen concentrations in European rivers, lakes, aquifers and coastal waters are high in many regions. In addition nitrate concentrations are increasing in groundwaters, threatening the long term quality of the resource.
In Europe, nitrogen pressures occur over large areas, implying elevated costs for meeting the long-term good chemical and ecological water quality requirements. A significant part of the European population could be potentially exposed to high nitrate values in drinking water if adequate treatments were not in place. Furthermore many of European aquatic ecosystems are eutrophic or at risk of eutrophication.
Nitrogen pressures have reduced biodiversity and damaged the resilience of aquatic ecosystems and continue to pose a threat to the aquatic environment and to the provision of goods and services from the aquatic ecosystems.
Even under favourable land use scenarios the nitrogen export to European waters and seas is likely to remain significant in the near future. The effects of climate change on nitrogen export to water are still uncertain.
Freshwater ecosystems play a key role in the European nitrogen (N) cycle, both as a reactive agent that transfers, stores and processes N loadings from the atmosphere and terrestrial ecosystems, and as a natural environment severely impacted by the increase of these loadings.
Approaches
This chapter is a review of major processes and factors controlling N transport and transformations for running waters, standing waters, groundwaters and riparian wetlands.
Key findings/state of knowledge
The major factor controlling N processes in freshwater ecosystems is the residence time of water, which varies widely both in space and in time, and which is sensitive to changes in climate, land use and management.
The effects of increased N loadings to European freshwaters include acidification in semi-natural environments, and eutrophication in more disturbed ecosystems, with associated loss of biodiversity in both cases.
An important part of the nitrogen transferred by surface waters is in the form of organic N, as dissolved organic N (DON) and particulate organic N (PON). This part is dominant in semi-natural catchments throughout Europe and remains a significant component of the total N load even in nitrate enriched rivers.
In eutrophicated standing freshwaters N can be a factor limiting or co-limiting biological production, and control of both N and phosphorus (P) loading is often needed in impacted areas, if ecological quality is to be restored.
This article describes the testing of a model that proposes that people's beliefs regarding the effectiveness of hazard preparedness interact with social context factors (community participation, collective efficacy, empowerment and trust) to influence levels of hazard preparedness. Using data obtained from people living in coastal communities in Alaska and Oregon that are susceptible to experiencing tsunami, structural equation modelling analyses confirmed the ability of the model to help account for differences in levels of tsunami preparedness. Analysis revealed that community members and civic agencies influence preparedness in ways that are independent of the information provided per se. The model suggests that, to encourage people to prepare, outreach strategies must (a) encourage community members to discuss tsunami hazard issues and to identify the resources and information they need to deal with the consequences a tsunami would pose for them and (b) ensure that the community-agency relationship is complementary and empowering.