Complexity and gaps: The high-hanging fruit of dementia and palliative care research

Sugary beverages and genetic risk in relation to brain structure and incident dementia: a prospective cohort study

BACKGROUND

The relation of intake of sugary beverages and genetic predisposition to the long-term risk of dementia and brain structure remains unclear.

OBJECTIVES

This study aimed to assess the associations of sugar-sweetened beverages (SSBs), artificially-sweetened beverages (ASBs), and natural juices (NJs) and the genetic predisposition with dementia risk and brain structure.

METHODS

We included 177,926 UK Biobank participants without dementia at baseline and followed them until March 2021. Intake of SSBs, ASBs, and NJs was assessed using repeated web-based 24-h dietary recalls from 2009 to 2012. We calculated a polygenic risk score (PRS) to indicate genetic predisposition of dementia for each individual. We estimated the HRs and 95% CIs using Cox proportional hazard models for dementia risk and β coefficients and 95% CIs using linear models for brain imaging markers.

RESULTS

During study follow-up (mean = 9.5 years), 1293 participants developed dementia (69.1 cases/100,000 person-years) excluding dementia cases within the first 2 years. Higher intake of SSBs and ASBs (>2 units/d compared with none) was each associated with a higher risk of dementia (HR: 1.34; 95% CI: 1.01, 1.77; P-trend = 0.040 for SSBs and 1.20; 95% CI: 0.84, 1.72; P-trend = 0.004 for ASBs). In contrast, moderate intake of NJs (>0-1 unit/d compared with none) was related to a lower dementia risk (HR: 0.77; 95% CI: 0.68, 0.87), a larger volume of brain gray matter (β = 0.05; 95% CI: 0.02, 0.08), and a lower volume of white matter hyperintensities (β = -0.07; 95% CI: -0.11, -0.03). The associations were not significantly modified by genetic risk (P-interactions = 0.839 for SSB × PRS, 0.732 for ASB × PRS, and 0.950 for NJ × PRS).

CONCLUSIONS

Higher SSB and ASB intake was associated with higher risk of dementia, and moderate NJ intake was associated with a lower risk of dementia. Am J Clin Nutr 20XX;xx:xx-xx.

Do Perceptions about Palliative Care Affect Emergency Decisions of Health Personnel for Patients with Advanced Dementia?

Decision analysis regarding emergency medical treatment in patients with advanced dementia has seldom been investigated. We aimed to examine the preferred medical treatment in emergency situations for patients with advanced dementia and its association with perceptions of palliative care. We conducted a survey of 159 physicians and 156 nurses from medical and surgical wards in two tertiary hospitals. The questionnaire included two case scenarios of patients with advanced dementia presenting gastrointestinal bleeding (scenario I) or pneumonia (scenario II) with a list of possible interventions and 11 items probing perceptions towards palliative care. Low burden interventions such as laboratory tests and intravenous administration of antibiotics/blood were preferred. Palliative measures such as analgesia/sedation were chosen by about half of the participants and invasive intervention by 41.6% (gastroscopy in scenario I) and 37.1% (intubation/mechanical ventilation in scenario II). Medical ward staff had a more palliative approach than surgical ward staff in scenario I, and senior staff had a more palliative approach than junior staff in scenario II. Most participants (90.4%) agreed that palliative care was appropriate for patients with advanced dementia. Stress in caring for patients with advanced dementia was reported by 24.5% of participants; 33.1% admitted fear of lawsuit, 33.8% were concerned about senior-level responses, and 69.7% were apprehensive of family members' reaction to palliative care. Perceptions of health care workers towards palliative care were associated with preferred treatment choice for patients with advanced dementia, mainly in scenario II. Attitudes and apprehensions regarding palliative care in these situations may explain the gap between positive attitudes towards palliative care and the chosen treatment approach. Acquainting emergency care practitioners with the benefits of palliative care may impact their decisions when treating this population.

Practitioner Bias as an Explanation for Low Rates of Palliative Care Among Patients with Advanced Dementia

Patients with advanced dementia are less likely than those with other terminal illnesses to receive palliative care. Due to the nature and course of dementia, there may be a failure to recognize the terminal stage of the disease. A possible and under-investigated explanation for this healthcare disparity is the healthcare practitioner who plays a primary role in end-of-life decision-making. Two potential areas that might impact provider decision-making are cognitive biases and moral considerations. In this analysis, we demonstrate how the cognitive biases and moral considerations of practitioners related to clinical decision-making are inherent in clinical practice and may impact on providers' accuracy related to diagnostic and treatment related decision-making associated with patients with advanced dementia. Anchoring, default, availability, representativeness and framing biases are cognitive biases based on the "Two System Model" that relate to decision-making in end-of-life care. In patients with advanced dementia, those biases may result in a tendency to adhere to traditional mandatory care, involving an aggressive approach to care, which values saving lives at all costs, without taking into account the possible suffering and long-term consequences. Aspects such as moral sensitivity and moral courage play an important role in ethical decision-making related to advanced dementia. Investigations of clinical decision-making that include the cognitive biases and ethical considerations of practitioners might advance the comprehensive understanding of the clinical decision-making process related to care of patients with advanced dementia and promote the quality of care given to this population.

The key aspects of online support that older family carers of people with dementia want at the end of life: A qualitative study

Objectives: Family carers towards the end of life face a range of difficult challenges and have high levels of support needs. The aim of this study was to explore the challenges carers of people with dementia face towards the end of life and the support needs which could be addressed by online support.Methods: Qualitative study using semi-structured interviews with 23 current and former family carers of people with dementia in England in 2016-2017. Interviews were analysed using thematic analysis methods.Results: Most carers interviewed had positive views of receiving support online via a website. Participants described a series of challenges they felt online support could address and help support them with when caring for someone with dementia towards the end of life: 1) feeling prepared and equipped; 2) feeling connected and supported; 3) balancing their own needs with those of the individual; and 4) maintaining control and being the co-ordinator of care. However many valued a mix of technology and human interaction in receiving support.Conclusions: This study has identified the key challenges for carers at the end of life that could be met by online support. Online support offers a source of support to supplement face-to-face contact, as many carers still wish to talk to someone in person. This could help alleviate pressures which health and social care systems currently face.

Designing and developing a co-produced theoretical and evidence-based online support for family caregivers of people with dementia at the end of life

BACKGROUND

Caring for someone with dementia can be physically and emotionally difficult. Acting as a caregiver can make it difficult to access sources of support, particularly in the later stages of dementia. This paper reports the development and presents the targets (subject areas) and components of a prototype website to support family caregivers of a person with dementia towards the end of life.

METHODS

Adopting an iterative approach and co-production methods the development process consisted of four stages: Stage1-Synthesis of data: three sources of data (interviews, systematic review and theory) were synthesised using tabulation, to identify the targets of the prototype; Stage2-Identifying intervention targets and components: a research development group (health practitioners, a family caregiver and academic experts) met to discuss the development, using a modified nominal group process, refining the synthesis from stage 1; Stage3-Developing the intervention prototype: an outline of the prototype was developed based on stage 1 and 2; and Stage4-User testing: interviews with caregivers testing the prototype website.

RESULTS

Qualitative interviews with caregivers identified four targets for the intervention: 1) feeling prepared and equipped; 2) feeling connected and supported; 3) valuing themselves as a caregiver and as an individual; 4) maintaining control of the caring situation and being the coordinator of care. The systematic review provided evidence on how and what components could address these targets, including providing information, peer support, contact with professionals, and psychological support. Theory helped to narrow the focus within each of these targets. Active discussion with the research development group and end users provided an outline of the prototype website. The prototype website presented addresses these targets with written information, videos from other caregivers, and peer and professional support sections. The subject areas covered included expectations at the end of life, support with day-to-day caring, care planning, and communication.

CONCLUSIONS

This paper provides a detailed account of the development process of a prototype website for caregiver support. The transparent methodology and key lessons learnt from developing the prototype should help those who are developing similar interventions, across complex, progressive conditions and not just limited to dementia.

Dementia and Parkinson's Disease: Similar and Divergent Challenges in Providing Palliative Care

Dementia and Parkinson's disease are incurable neurological conditions. Patients often experience specific, complex, and varying needs along their disease trajectory. Current management typically employs a multidisciplinary team approach. Recognition is growing that this team approach should also address palliative care issues to optimize quality of life for patient and family caregivers, but it remains unclear how palliative care is best delivered. To inspire future service development and research, we compare the trajectories and conceptualization of palliative care between dementia and Parkinson's disease. Both Parkinson's disease and dementia are characterized by a protracted course, with progressive but fairly insidious development of disability. However, patients with Parkinson's disease may experience relatively stable periods initially but with time, a wide range of debilitating symptoms develops, many of which do not respond well to treatment. Eventually, dementia develops in most Parkinson patients, while motor disability develops in many dementia patients. In both diseases, symptoms such as pain, apathy, sleeping problems, falls, and a high caregiver burden are prevalent. Advance care planning has benefits in terms of being prepared before the disease progresses into a stage with communication problems or severe cognitive impairment. However, for both conditions, the protracted disease trajectories complicate conceptualization of palliative care through different stages of the disease, with pertinent questions such as when to offer what interventions pro-actively. Given the similarities and differences, we should develop palliative approaches that are partially generic and partially disease-specific. These should be integrated seamlessly with disease-specific care. Substantial research is already being performed on dementia palliative care. This may also inform the further development of palliative care for Parkinson's disease, including an evaluation of palliative interventions and services.