An evaluation of the additional benefit of population screening for dementia beyond a passive case-finding approach

Ethico-Political aspects of clinical judgment in opportunistic screening for cognitive impairment: Arendtian and aristotelian perspectives

This article examines a population-based opportunistic screening practice for cognitive impairment that takes place at a hospital in Sweden. At the hospital, there is a routine in place that stipulates that all patients over the age of 65 who are admitted to the ward will be offered testing for cognitive impairment, unless they have been tested within the last six months or have been diagnosed with any form of cognitive impairment. However, our analysis shows that this routine is not universally and mechanically applied. Rather, the health care professionals have developed and use an ethico-political judgment, concerning, for example, whom to test, when to offer the tests, and how to explain and perform them. This article explores the role and practice of this form of judgment, emphasising its political and ethical nature. The analysis is based on qualitative interviews with professionals and patients, and draws on the theories of Aristotle and Hannah Arendt.

Ethico-Political Aspects of Conceptualizing Screening: The Case of Dementia

While the value of early detection of dementia is largely agreed upon, population-based screening as a means of early detection is controversial. This controversial status means that such screening is not recommended in most national dementia plans. Some current practices, however, resemble screening but are labelled "case-finding" or "detection of cognitive impairment". Labelled as such, they may avoid the ethical scrutiny that population-based screening may be subject to. This article examines conceptualizations of screening and case-finding. It shows how the definitions and delimitations of the concepts (the what of screening) are drawn into the ethical, political, and practical dimensions that screening assessment criteria or principles are intended to clarify and control (the how of screening, how it is and how it should be performed). As a result, different conceptualizations of screening provide the opportunity to rethink what ethical assessments should take place: the conceptualizations have different ethico-political implications. The article argues that population-based systematic screening, population-based opportunistic screening, and case-finding should be clearly distinguished.

Dementia and immigrant groups: a qualitative study of challenges related to identifying, assessing, and diagnosing dementia

Background

Along with the ageing of the general population, Europe’s migrant populations are also ageing, thus posing new challenges for dementia care services, particularly if the services are to be adjusted to persons with different linguistic and cultural backgrounds. From the perspective of health professionals, this study aims to explore challenges involved in identifying, assessing and diagnosing people with cognitive impairment/dementia who have different linguistic and cultural backgrounds.

Methods

Research on health professionals experiences regarding the management of dementia among immigrants is scarce and qualitative methods was used to address the objective of the study. Using qualitative in-depth interviews and focus-group discussions, we sought to gather participants’ experiences regarding the diagnostic process for immigrants with dementia. The material was analysed and interpreted based on Kvale and Brinkmann’s descriptions of three different contexts of interpretation: self-understanding, critical common-sense understanding, and theoretical understanding.

Results

Health professionals described how families could attribute symptoms of dementia to processes of normal ageing, while others saw the symptoms as something shameful; both instances delayed or hindered help-seeking. Many clinicians had limited experience with older immigrants suffering from dementia, and general practitioners (GPs) in particular experienced difficulties assessing dementia due to language barriers and difficulties related to the involvement of the family or an interpreter. The findings illustrate challenges in assessment, such as unfamiliarity with test situations among those being assessed and lack of knowledge regarding appropriate diagnostic tools among health professionals. Lack of continuity and poor information exchange in the chain of care seem to reinforce many of these challenges.

Conclusions

Detection, treatment and care may be improved if primary care professionals strengthen their cross-cultural competences. Training in communication skills and in the use of cross-cultural assessment tools may help build competence and confidence when assessing and caring for people with different cultural and linguistic backgrounds. Closer collaboration among families, nurses in home-based services, dementia teams, and GPs may facilitate close monitoring of a patient over time. Such collaboration requires sufficient information exchange during transitions in the chain of care, continuity among health professionals, and a shared understanding of the goals for treatment and care.

Electronic supplementary material

The online version of this article (10.1186/s12913-018-3720-7) contains supplementary material, which is available to authorized users.

Development and validation of a dementia screening tool for primary care in Taiwan: Brain Health Test

Objectives

To develop a simple dementia screening tool to assist primary care physicians in identifying patients with cognitive impairment among subjects with memory complaints or at a high risk for dementia.

Design

The Brain Health Test (BHT) was developed by several experienced neurologists, psychiatrists, and clinical psychologists in the Taiwan Dementia Society. Validation of the BHT was conducted in the memory clinics of various levels of hospitals in Taiwan.

Participants

All dementia patients at the memory clinics who met the inclusion criteria of age greater or equal to 50 years were enrolled. Besides the BHT, the Mini-Mental State Examination and Clinical Dementia Rating were used to evaluate the cognition state of the patients and the severity of dementia.

Results

The BHT includes two parts: a risk evaluation and a cognitive test (BHT-cog). Self or informants reports of memory decline or needing help from others to manage money or medications were significantly associated with cognitive impairment. Among the risk factors evaluated in the BHT, a total risk score greater or equal to 8 was defined as a high risk for dementia. The total score for the finalized BHT-cog was 16. When the cutoff value for the BHT-cog was set to 10 for differentiating dementia and a normal mental state, the sensitivity was 91.5%, the specificity was 87.3%, the positive predictive value was 94.8%, and the negative predictive value was 80.1% The area under the receiver operating characteristic curve between dementia and healthy subjects was 0.958 (95% CI = 0.941–0.975).

Conclusions

The BHT is a simple tool that may be useful in primary care settings to identify high-risk patients to target for cognitive screening.