Delusions and hallucinations in persons with dementia: a comparison of the perceptions of formal and informal caregivers

Psychosis detection in dementia: a systematic review of diagnostic test accuracy studies

Introduction

Symptoms of psychosis, characterized by delusions and hallucinations, are commonly experienced by persons living with dementia. A systematic review was completed to identify tools to evaluate symptoms of psychosis compared to a reference standard in persons with dementia. Articles reporting correlation values between psychosis tools were also identified.

Methods

The search concepts psychosis, dementia, and diagnostic accuracy were used to search MEDLINE, PsycINFO, and Embase. Included articles meeting the primary objective described a tool to assess symptoms of psychosis, delusions, or hallucinations in persons with dementia, a reference standard form of diagnostic assessment for psychosis, and diagnostic accuracy outcomes for the psychosis tool. Secondary objective articles reported correlation values between two or more psychosis tools in persons with dementia.

Results

One study met the primary objective and described the sensitivity and specificity of the Neuropsychiatric Inventory (NPI) and Columbia University Scale for Psychopathology in Alzheimer's Disease (CUSPAD) in identifying symptoms of psychosis, hallucinations, and delusions. The sensitivity of the NPI and CUSPAD in identifying symptoms of psychosis was 83 and 90%, respectively. Nine studies meeting the secondary objective described eleven unique tools and examined the degree to which tools used to assess psychotic symptoms in persons with dementia were related.

Discussion

The NPI and CUSPAD were identified in a single study as psychosis tools that have been evaluated against a reference standard of psychosis assessment in persons with dementia. Various tools to assess the burden of psychotic symptoms in persons with dementia exist, but the diagnostic accuracy of existing tools remains understudied. Further research on the comparative utility and diagnostic accuracy is required for all psychosis tools used with persons with dementia.

The reporting of neuropsychiatric symptoms in electronic health records of individuals with Alzheimer's disease: a natural language processing study

BACKGROUND

Neuropsychiatric symptoms (NPS) are prevalent in the early clinical stages of Alzheimer's disease (AD) according to proxy-based instruments. Little is known about which NPS clinicians report and whether their judgment aligns with proxy-based instruments. We used natural language processing (NLP) to classify NPS in electronic health records (EHRs) to estimate the reporting of NPS in symptomatic AD at the memory clinic according to clinicians. Next, we compared NPS as reported in EHRs and NPS reported by caregivers on the Neuropsychiatric Inventory (NPI).

METHODS

Two academic memory clinic cohorts were used: the Amsterdam UMC (n = 3001) and the Erasmus MC (n = 646). Patients included in these cohorts had MCI, AD dementia, or mixed AD/VaD dementia. Ten trained clinicians annotated 13 types of NPS in a randomly selected training set of n = 500 EHRs from the Amsterdam UMC cohort and in a test set of n = 250 EHRs from the Erasmus MC cohort. For each NPS, a generalized linear classifier was trained and internally and externally validated. Prevalence estimates of NPS were adjusted for the imperfect sensitivity and specificity of each classifier. Intra-individual comparison of the NPS classified in EHRs and NPS reported on the NPI were conducted in a subsample (59%).

RESULTS

Internal validation performance of the classifiers was excellent (AUC range: 0.81-0.91), but external validation performance decreased (AUC range: 0.51-0.93). NPS were prevalent in EHRs from the Amsterdam UMC, especially apathy (adjusted prevalence = 69.4%), anxiety (adjusted prevalence = 53.7%), aberrant motor behavior (adjusted prevalence = 47.5%), irritability (adjusted prevalence = 42.6%), and depression (adjusted prevalence = 38.5%). The ranking of NPS was similar for EHRs from the Erasmus MC, although not all classifiers obtained valid prevalence estimates due to low specificity. In both cohorts, there was minimal agreement between NPS classified in the EHRs and NPS reported on the NPI (all kappa coefficients < 0.28), with substantially more reports of NPS in EHRs than on NPI assessments.

CONCLUSIONS

NLP classifiers performed well in detecting a wide range of NPS in EHRs of patients with symptomatic AD visiting the memory clinic and showed that clinicians frequently reported NPS in these EHRs. Clinicians generally reported more NPS in EHRs than caregivers reported on the NPI.

Responses and Interventions to Delusions Experienced by Community-Dwelling Older Persons With Dementia

We examined how family caregivers react, and what interventions they use in response to delusions exhibited by relatives with dementia in a community setting. Structured interviews were conducted with 68 family caregivers whose relatives were described as experiencing delusions based on the BEHAVE-AD or the NPI. Quantitatively, we cross-tabulated the type of response to delusion by the type of person providing the response and by the type of delusion manifested. Qualitatively, we analyzed open-ended responses to understand the types of caregivers' responses to delusions, the contextual circumstances, and the impact of the responses. Caregiver responses to delusions included "Explaining that the delusion was wrong" (34% of responses), "Trying to calm down" (27%), "Agreeing with the delusion" (13%), "Distracting" (12%), and "Ignoring" (10%). Responses including "Anger, yelling or scolding," were rare. The vast majority of reactions were by family caregivers of the persons with dementia. The relative frequency of the type of reaction tended to be consistent across delusion types. The qualitative analyses added some categories of reactions, but mostly highlighted issues to be considered when examining responses and their efficacy, including the use of multiple responses, and the manner and mood in which responses are conveyed. To cope with delusions, family caregivers develop intuitive intervention techniques. Understanding those interventions and reactions by caregivers and their relative efficacy can inform guidance programs for family caregivers. Improved support for family caregivers has the potential to positively influence the behavior of caregivers and older adults with dementia and improve their respective quality of life.

Who is informed and who uninformed? Addressing the legal barriers to progress in dementia research and care

Conduct of research is an essential tool for the evaluation and improvement of health services. In Israel, research on persons with dementia is very limited, with the largest portion of such research involving a few surveys and examining risk factors for dementia. Very few studies describe clinical research, and those that do either include participants at early stages of dementia, or rely completely on caregivers' perceptions and experiences, often without reference to any individual with dementia. This dearth of research is due, to a substantial extent, to Ministry of Health regulations which do not permit family proxy consent for research involving persons with dementia. Alternative models for regulation of consent for research exist in other countries, including the U.S., and these allow for proxy consent under certain conditions. This paper presents such a model and its underlying ethical principles. It contends that the current state of affairs, which stands in the way of clinical research concerning persons with advanced dementia, is contrary to the interests of such persons, their caregivers, and Israeli society. Therefore, this paper calls for a change in the present regulations and/or law in the cause of advancing knowledge and improving care for persons with dementia.

Exploring the collaboration between formal and informal care from the professional perspective-A thematic synthesis

In Dutch policy and at the societal level, informal caregivers are ideally seen as essential team members when creating, together with professionals, co-ordinated support plans for the persons for whom they care. However, collaboration between professionals and informal caregivers is not always effective. This can be explained by the observation that caregivers and professionals have diverse backgrounds and frames of reference regarding providing care. This thematic synthesis sought to examine and understand how professionals experience collaboration with informal caregivers to strengthen the care triad. PubMed, Medline, PsycINFO, Embase, Cochrane/Central and CINAHL were searched systematically until May 2015, using specific key words and inclusion criteria. Twenty-two articles were used for thematic synthesis. Seven themes revealed different reflections by professionals illustrating the complex, multi-faceted and dynamic interface of professionals and informal care. Working in collaboration with informal caregivers requires professionals to adopt a different way of functioning. Specific attention should be paid to the informal caregiver, where the focus now is mainly on the client for whom they care. This is difficult to attain due to different restrictions experienced by professionals on policy and individual levels. Specific guidelines and training for the professionals are necessary in the light of the current policy changes in the Netherlands, where an increased emphasis is placed on informal care structures.

New or Worsening Symptoms and Signs in Community-Dwelling Persons with Dementia: Incidence and Relation to Use of Acute Medical Services

OBJECTIVES

To understand the range of symptoms that present to family caregivers of community-dwelling persons with Alzheimer's disease and related dementias (ADRD).

DESIGN

Six-month longitudinal prospective study to identify the incidence of new or worsening symptoms and their association with acute care medical service use.

SETTING

Community-based sample of volunteers from multiple states.

PARTICIPANTS

A total of 136 patient-caregiver dyads with a range of dementia severity.

MEASUREMENTS

Forty four symptoms and signs common in older persons and/or persons with dementia; frequency of emergency department visits, hospitalizations, and death; and associations between reported symptoms and acute medical care.

RESULTS

During a mean of 5.7 months' follow-up, new or worsening organ-specific (90% of participants), nonspecific (89%), and behavioral (88%) symptoms were common, with the average caregiver reporting seven new or worsening symptoms. Most common were worsening confusion (74%), decreased activity (64%), agitation (57%), hallucinations/delusions (45%), voice and speaking problems (45%), not eating or drinking (44%), and stress/anxiety (41%). Hospitalization and emergency department use occurred respectively in 19% and 20% of participants, and were associated with organ-specific symptoms (OR 3.15, P = .02), less so with nonspecific symptoms (OR 2.27, P = .07), and very little with behavioral symptoms (OR 1.44, P = .38). Within each symptom category, certain symptoms were significantly associated with acute medical service use.

CONCLUSION

Family caregivers of persons with ADRD must respond to a variety of medical, nonspecific, and behavioral symptoms. The high incidence of new or worsening symptoms and of acute medical care use suggests a need to better target symptom evaluation and management in caregiver education.

The mourning process of older people with dementia who lost their spouse

AIMS

To explore the mourning process of people with dementia who have lost their spouse, using family caregivers' and professionals' perspectives and to devise grief care for people with dementia.

BACKGROUND

There have been studies on the loss of one's spouse; however, little is known about widows and widowers with dementia as they may find it hard to tell their perception and feelings to others accurately because of cognitive impairment.

DESIGN

Qualitative descriptive study using semi-structured interviews.

METHOD

Seven family caregivers and six professional caregivers from day care centres were interviewed between June and September 2015. Qualitative content analysis was used to identify mourning behaviours of people with dementia.

RESULTS

In the mourning process of people with dementia, different behaviours were found according to dementia stages and different circumstances. In FAST2, they could remember their spouse's death. In FAST4 -6, it took 1 year to be able to perceive their spouse's death and more time to store it. In FAST 7, people with dementia did not discern his spouse's death throughout the process. Furthermore, it was revealed that people with dementia followed a different mourning process from conventional ones.

CONCLUSION

In the care of widows and widowers with dementia it is crucial to adjust circumstances to allow people with dementia to guess reality. Further studies are needed to clarify differences between the mourning process of people with dementia and that of intact older people to develop a grief model and educational programmes.