James Silvius

What is a health expectation? Developing a pragmatic conceptual model from psychological theory

Introduction  Examination of the existing literature in respect of health expectations revealed both ambiguity in relation to terminology, and relatively little work in respect of how abstract theories of expectancy in the psychological literature might be used in empirical research into the influence of expectations on attitudes and behaviours in the real world. This paper presents a conceptual model for the development of health expectations with specific reference to Alzheimers disease.

Why health expectations and hopes are different: the development of a conceptual model

Background  In the literature, ‘hope’ has often been thought of as an ideal expectation. However, we believe the classification of hope as a type of expectation is problematic. Although both hopes and expectations are future‐oriented cognitions, expectations are distinct in that they are an individual’s probability‐driven assessment of the most likely outcomes, while hopes are an assessment of the most desirable – but not necessarily the most probable – outcomes.

Pathways to diagnosis: exploring the experiences of problem recognition and obtaining a dementia diagnosis among Anglo-Canadians.

Increasing evidence suggests that early diagnosis and management of dementia-related symptoms may improve the quality of life for patients and their families. However, individuals may wait from 1-3 years from the onset of symptoms before receiving a diagnosis. The objective of this qualitative study was to explore the perceptions and experiences of problem recognition, and the process of obtaining a diagnosis among individuals with early-stage dementia and their primary carers. From 2006-2009, six Anglo-Canadians with dementia and seven of their carers were recruited from the Alzheimers Society of Calgary to participate in semi-structured interviews. Using an inductive, thematic approach to the analysis, five major themes were identified: becoming aware of memory problems, attributing meanings to symptoms, initiating help-seeking, acknowledging the severity of cognitive changes and finally obtaining a definitive diagnosis. Individuals with dementia reported noticing memory difficulties earlier than their carers. However, initial symptoms were perceived as ambiguous, and were normalised and attributed to concurrent health problems. The diagnostic process was typically characterised by multiple visits and interactions with health professionals, and a diagnosis was obtained as more severe cognitive deficits emerged. Throughout the diagnostic pathway, carers played dynamic roles. Carers initially served as a source of encouragement to seek help, but they eventually became actively involved over concerns about alternative diagnoses and illness management. A better understanding of the pre-diagnosis period, and the complex interactions between peoples beliefs and attributions about symptoms, may elucidate some of the barriers as well as strategies to promote a timelier dementia diagnosis.

Dying in a nursing home: treatable symptom burden and its link to modifiable features of work context.

IMPORTANCE High-quality care at the end of life supports freedom from pain and other potentially burdensome symptoms. Lowering symptom burden at the end of life is an urgent and achievable goal in delivering services in nursing home settings. Few published reports describe symptom burden among older adults in nursing homes; none examine links between symptom burden and modifiable features of nursing home organizational context (work environment). OBJECTIVES To examine the influence of organizational context on symptom burden and to compare symptom burden in the last year of life between nursing home residents with and without dementia. DESIGN Retrospective analysis of longitudinal survey data. SETTING A stratified random sample of 36 nursing homes in the Canadian provinces of Alberta, Manitoba, and Saskatchewan. PARTICIPANTS A total of 2635 residents with dementia and 1012 without dementia; 1381 front-line care staff. MEASUREMENTS (1) Trajectories of 6 symptoms (dyspnea, pain, pressure ulcers, urinary tract infections, challenging behavior, delirium), assessed with the Resident Assessment Instrument-Minimum Data Set, version 2.0, between 2008 and 2012. All residents received assessments in each quarter of the year before death. (2) Modifiable organizational context, assessed with the Alberta Context Tool. Hierarchical mixed model, repeated measures regression, to simultaneously evaluate effects of time, dementia, and context on symptom trajectories. RESULTS For all residents, prevalence of symptoms increased over time. In the last quarter before death, challenging behavior was the most frequent symptom in the dementia group (40.2%), delirium the most frequent symptom in the nondementia group (31.0%), and urinary tract infections least frequent (9.0% to 10.0%). Facilities with more favorable context had significantly higher prevalence of challenging behavior and delirium and significantly lower use of antipsychotics without diagnosis of psychosis. CONCLUSION Symptom burden increases as the end of life approaches but differs between high- and low-context facilities and between residents with and without dementia. Trajectories of treatable, burdensome symptoms at the end of life in nursing homes should be a priority focus for quality improvement. Modifiable features of organizational context that are linked to symptom burden offer new potential strategies and interventions for quality improvement.

A pragmatic study exploring the prevention of delirium among hospitalized older hip fracture patients: Applying evidence to routine clinical practice using clinical decision support

Delirium occurs in up to 65% of older hip fracture patients. Developing delirium in hospital has been associated with a variety of adverse outcomes. Trials have shown that multi-component preventive interventions can lower delirium rates. The objective of this study was to implement and evaluate the effectiveness of an evidence-based electronic care pathway, which incorporates multi-component delirium strategies, among older hip fracture patients. We conducted a pragmatic study using an interrupted time series design in order to evaluate the use and impact of the intervention. The target population was all consenting patients aged 65 years or older admitted with an acute hip fracture to the orthopedic units at two Calgary, Alberta hospitals. The primary outcome was delirium rates. Secondary outcomes included length of hospital stay, in-hospital falls, in-hospital mortality, new discharges to long-term care, and readmissions. A Durbin Watson test was conducted to test for serial correlation and, because no correlation was found, Chi-square statistics, Wilcoxon test and logistic regression analyses were conducted as appropriate. At study completion, focus groups were conducted at each hospital to explore issues around the use of the order set. During the 40-week study period, 134 patients were enrolled. The intervention had no effect on the overall delirium rate (33% pre versus 31% post; p = 0.84). However, there was a significant interaction between study phase and hospital (p = 0.03). Although one hospital did not experience a decline in delirium rate, the delirium rate at the other hospital declined from 42% to 19% (p = 0.08). This difference by hospital was mirrored in focus group feedback. The hospital that experienced a decline in delirium rates was more supportive of the intervention. Overall, post-intervention there were no significant differences in mean length of stay (12 days post versus 14 days pre; p = 0.74), falls (6% post versus 10% pre; p = 0.43) or discharges to long-term care (6% post versus 13% pre; p = 0.20). Translation of evidence-based multi-component delirium prevention strategies into everyday clinical care, using the electronic medical record, was not found to be effective at decreasing delirium rates among hip facture patients.

Pathways to dementia diagnosis among South Asian Canadians

Urban centers are increasingly ethnically diverse. However, some visible minorities are less likely than their majority counterparts to seek and receive services and treatment for dementia. This study explored experiences of South Asian Canadians, Canada’s largest visible minority group, prior to dementia diagnosis. Six persons with dementia and eight of their family carers described their early perceptions of dementia-related changes, actions taken, including help seeking and diagnosis, and affective responses. Early signs were attributed to aging or personality. Even after cognitive enhancers were prescribed, some respondents continued to believe that the dementia symptoms were ‘normal’. Family carers’ affective responses may be related to their attributions. Before seeking medical attention, family carers modified physical or social environments because of symptoms. Help seeking was delayed up to four years, even with significant dementia symptoms. Recognition of a health problem was influenced by safety concerns, emergence of new symptoms following trauma, and treatment for other health problems. For some, relatives living outside the home or outside Canada were instrumental in recognizing a problem and convincing family carers and persons with dementia to seek medical attention. The pathway to diagnosis might be easier with outreach to help South Asian immigrants differentiate between normal aging and dementia. Symptom recognition by physicians treating other acute conditions was a portal to dementia services for others. Screening and referral in acute care could result in earlier diagnosis and treatment.

An Ecological Approach to Reducing Potentially Inappropriate Medication Use: Canadian Deprescribing Network

Polypharmacy is growing in Canada, along with adverse drug events and drug-related costs. Part of the solution may be deprescribing, the planned and supervised process of dose reduction or stopping of medications that may be causing harm or are no longer providing benefit. Deprescribing can be a complex process, involving the intersection of patients, health care providers, and organizational and policy factors serving as enablers or barriers. This article describes the justification, theoretical foundation, and process for developing a Canadian Deprescribing Network (CaDeN), a network of individuals, organizations, and decision-makers committed to promoting the appropriate use of medications and non-pharmacological approaches to care, especially among older people in Canada. CaDeN will deploy multiple levels of action across multiple stakeholder groups simultaneously in an ecological approach to health system change. CaDeN proposes a unique model that might be applied both in national settings and for different transformational challenges in health care.

Effective use of the built environment to manage behavioural and psychological symptoms of dementia: a systematic review.

Objective To determine the effectiveness of built environment interventions in managing behavioural and psychological symptoms of dementia (BPSD) among residents in long-term care settings. Methods Systematic review of literature published from 1995–2013. Studies were included if they: were randomized controlled trials, quasi-experimental trials, or comparative cohort studies; were in long-term or specialized dementia care; included residents with dementia and BPSD; and examined effectiveness of a built environment intervention on frequency and/or severity of BPSD. Quality of included studies was assessed using the Downs and Black Checklist. Study design, patient population, intervention, and outcomes were extracted and narratively synthesized. Results Five low to moderate quality studies were included. Three categories of interventions were identified: change/redesign of existing physical space, addition of physical objects to environment, and type of living environment. One of the two studies that examined change/redesign of physical spaces reported improvements in BPSD. The addition of physical objects to an existing environment (n = 1) resulted in no difference in BPSD between treatment and control groups. The two studies that examined relocation to a novel living environment reported decreased or no difference in the severity and/or frequency of BPSD post-intervention. No studies reported worsening of BPSD following a built environment intervention. Conclusions The range of built environment interventions is broad, as is the complex and multi-dimensional nature of BPSD. There is inconclusive evidence to suggest a built environment intervention which is clinically superior in long-term care settings. Further high-quality methodological and experimental studies are required to demonstrate the feasibility and effectiveness of such interventions.