Naaheed Mukadam

Dementia prevention, intervention, and care

Acting now on dementia prevention, intervention, and care will vastly improve living and dying for individuals with dementia and their families, and in doing so, will transform the future for society. Dementia is the greatest global challenge for health and social care in the 21st century. It occurs mainly in people older than 65 years, so increases in numbers and costs are driven, worldwide, by increased longevity resulting from the welcome reduction in people dying prematurely. The Lancet Commission on Dementia Prevention, Intervention, and Care met to consolidate the huge strides that have been made and the emerging knowledge as to what we should do to prevent and manage dementia. Globally, about 47 million people were living with dementia in 2015, and this number is projected to triple by 2050. Dementia affects the individuals with the condition, who gradually lose their abilities, as well as their relatives and other supporters, who have to cope with seeing a family member or friend become ill and decline, while responding to their needs, such as increasing dependency and changes in behaviour. Additionally, it affects the wider society because people with dementia also require health and social care. The 2015 global cost of dementia was estimated to be US

Systematic review of the effectiveness of non-pharmacological interventions to improve quality of life of people with dementia

818 billion, and this figure will continue to increase as the number of people with dementia rises. Nearly 85% of costs are related to family and social, rather than medical, care. It might be that new medical care in the future, including public health measures, could replace and possibly reduce some of this cost.

A systematic review of ethnicity and pathways to care in dementia

BACKGROUND People with dementia report lower quality of life, but we know little about what interventions might improve it. METHODS We systematically reviewed 20 randomized controlled trials reporting the effectiveness of non-pharmacological interventions in improving quality of life or well-being of people with dementia meeting predetermined criteria. We rated study validity with a checklist. We contacted authors for additional data. We calculated standardized mean differences (SMD) and, for studies reporting similar interventions, pooled standardized effect sizes (SES). RESULTS Pooled analyses found that family carer coping strategy-based interventions (four studies, which did not individually achieve significance; n = 420; SES 0.24 (range 0.03-0.45)) and combined patient activity and family carer coping interventions (two studies, not individually significant; n = 191; SES 0.84 (range 0.54-1.14)) might improve quality of life. In one high-quality study, a care management system improved quality of life of people with dementia living at home. Group Cognitive Stimulation Therapy (GCST) improved quality of life of people with dementia in care homes. CONCLUSION Preliminary evidence indicated that coping strategy-based family carer therapy with or without a patient activity intervention improved quality of life of people with dementia living at home. GCST was the only effective intervention in a higher quality trial for those in care homes, but we did not find such evidence in the community. Few studies explored whether effects continued after the intervention stopped. Future research should explore the longer-term impact of interventions on, and devise strategies to increase, life quality of people with dementia living in care homes or at home without a family carer.

A systematic review of the prevalence, associations and outcomes of dementia in older general hospital inpatients

To explore why people from minority ethnic (ME) groups with dementia present later to specialist diagnostic and therapeutic dementia services. We systematically reviewed the literature exploring how and why ME people with dementia present to specialist services.

Why do ethnic elders present later to UK dementia services? A qualitative study

BACKGROUND Older people are commonly admitted to the acute hospital and increasing numbers will have dementia. In this study we systematically reviewed the prevalence, associations and outcomes of dementia in older people in the general hospital, to examine the range of diagnostic tools used and highlight gaps in the literature. METHODS We searched the English language literature using Embase, PsychInfo and Medline. Studies were included if they used validated criteria for diagnosing dementia, involved subjects over the age of 55 years and were set in the general hospital. RESULTS Fourteen papers were identified. Prevalence estimates for dementia in studies with robust methodology were 12.9-63.0%. Less than a third of studies screened for delirium or depression and therefore some subjects may have been misclassified as having dementia. The data were highly heterogeneous and prevalence estimates varied widely, influenced by study setting and demographic features of the cohorts. Patients with dementia in the acute hospital are older, require more hours of nursing care, have longer hospital stays, and are more at risk of delayed discharge and functional decline during admission. CONCLUSIONS When planning liaison services, the setting and demographic features of the population need to be taken into account. Most study cohorts were recruited from medical wards. More work is required on the prevalence of dementia in surgical and other specialties. A wider range of associations (particularly medical and psychiatric comorbidity) and outcomes should be studied so that care can be improved.

Diagnostic rates and treatment of dementia before and after launch of a national dementia policy: an observational study using English national databases

BACKGROUND Western policy initiatives prioritize early diagnosis of dementia, but minority ethnic (ME) people currently present later to dementia specialist care than their indigenous counterparts. In order to allow the development of rational interventions, we completed this first study to explore the link between attitudes to help-seeking for dementia and the help-seeking pathway in the ME and indigenous population. METHODS We purposively recruited a maximum variation sample comprising 18 family carers of people with dementia from the major UK ethnic groups. We used semi-structured interviews to determine the barriers to and facilitators of help-seeking, and the pathways to diagnosis. Two researchers independently coded interviews and recruitment continued until theoretical saturation was reached. RESULTS ME carers, in contrast to the indigenous population, tended to delay help-seeking until they could no longer cope or until others commented on the problems. They often thought that families should look after their own elders and a diagnosis alone was purposeless. This appeared to relate to beliefs about the etiology of cognitive impairment, negative beliefs about psychiatry and their sense of familial responsibility. CONCLUSIONS ME carer beliefs were an important barrier to early diagnosis. Further work should explore whether an intervention can modify these attitudes, so that families understand that a diagnosis may allow planning and avoidance of crises; rather than signifying a failure in duty, disloyalty, or relinquishing of the caring role. Further research should focus on developing interventions to tackle barriers to help-seeking in ethnic minorities so that healthcare access can be equitable for all.

A systematic review of interventions to detect dementia or cognitive impairment

Objectives To assess the 2009 National Dementia Strategys (NDS) impact on dementia diagnosis and treatment. Setting and participants Primary care data for England before and after launch of the NDS. Primary outcome measures We used nationally available data to estimate the trends over time in rates of dementia diagnoses recorded on the Quality Outcomes Framework (QOF) in Primary Care Trusts (PCT) and antidementia medication prescriptions from 2006/2007 (the first available figures) and the associated increase in cost relative to all other prescriptions. To establish PCT general practitioner (GP) QOF dementia recording validity, we correlated it with medication prescription using the NIC (net ingredient cost). Results Regression analysis showed that dementia diagnosis rate was lower prior to launch of the NDS and increased significantly after it was launched. The number of antidementia prescriptions and the cost of antidementia drugs relative to total PCT prescribing costs increased significantly after 2009. GP recording of dementia diagnosis correlated highly with prescription of cholinesterase inhibitors and memantine in the same area (p<0.001 each year). Conclusions The launch of the NDS was associated with a significant increase in dementia diagnosis rates and prescriptions of antidementia drugs. We cannot establish the causality but this was a change from the prelaunch pattern. Further assessment of any intervention to increase the diagnoses should include an assessment of harm as well as potential benefit.

Improving access to dementia services for people from minority ethnic groups

Memory services have been implemented nationally to increase early dementia diagnosis, and further evaluation of their impact and other strategies to increase timely dementia diagnosis are needed.

The Relationship of Bilingualism Compared to Monolingualism to the Risk of Cognitive Decline or Dementia: A Systematic Review and Meta-Analysis

Purpose of review Only a minority of people with dementia receive a formal diagnosis despite a growing body of evidence highlighting the benefits of early diagnosis and intervention. People from minority ethnic groups are even more disadvantaged, as they tend to access dementia services later in the illness. Studies exploring the reasons behind underuse of dementia services by minority ethnic groups have highlighted the barriers to help-seeking that seem specific to the cultural groups studied. Understanding the barriers to help-seeking should help to identify the targets for interventions to encourage help-seeking in minority ethnic communities. This review sought to highlight the progress in this field and show what interventions have been developed so far. Recent findings Many countries are carrying out educational campaigns in an effort to increase awareness about dementia and reduce stigma, but none of these have reported any measurable outcomes of their interventions. Studies show that knowledge about dementia has the potential to increase help-seeking, but information should be targeted to the recipient audience. Summary Not enough has been done to address the inequality in service use for dementia in minority ethnic groups compared with the majority population. The time has come for the development of targeted and evidence-based interventions in order to improve access and affect outcomes.

What would encourage help-seeking for memory problems among UK-based South Asians? A qualitative study

BACKGROUND Bilingualism may contribute to cognitive reserve, protect against cognitive decline, and delay the onset of dementia. OBJECTIVE We systematically reviewed evidence about the effect of bilingualism on subsequent cognitive decline or dementia. METHODS We searched electronic databases and references for longitudinal studies comparing cognitive decline in people who were bilingual with those who were monolingual and evaluated study quality. We conducted meta-analyses using random effects models to calculate pooled odds ratio of incident dementia. RESULTS We included 13/1,156 eligible articles. Meta-analysis of prospective studies of the effects of bilingualism on future dementia gave a combined Odds Ratio of dementia of 0.96 (95% CI 0.74-1.23) in bilingual participants (n = 5,527) compared to monolinguals. Most retrospective studies found that bilingual people were reported to develop symptoms of cognitive decline at a later age than monolingual participants. CONCLUSION We did not find that bilingualism protects from cognitive decline or dementia from prospective studies. Retrospective studies are more prone to confounding by education, or cultural differences in presentation to dementia services and are therefore not suited to establishing causative links between risk factors and outcomes.