Forskningsartikler

ABSTRACT

Objectives:
The study aims to conduct a systematic review of peer-reviewed articles about psychosocial interventions to reduce the caregiver burden in family caregivers of people with dementia to explore the effectiveness and the type of intervention and methodology used.

Methods:
Five databases were searched (AgeLine, CINAHL, MEDLINE, PsycINFO, PubMed) for studies reporting on experimental research of psychosocial interventions for dementia-related caregiver burden. Data quality checks were completed for included papers.

Results:
Forty-three studies were included in the analysis; about half of them (n = 24) were randomized controlled trials. The types of interventions most often used were psychoeducation (n = 21) and multi-component interventions (n = 12). The caregiver burden was after the intervention successfully reduced in about half of the studies (n = 19). Additionally, 10 studies had success in reducing caregiving burden in one of several assessment measures used. The studies using psychoeducation (57%) and multi-component (58%) intervention approaches had the highest success rates.

Conclusion:
Health professionals should be encouraged to implement psychosocial interventions for caregivers of patients with dementia.

Hande Kirisik Surer, Nilufer Korkmaz Yaylagul & Anne-Sofie Helvik

Introduction: Frontotemporal symptoms are usually associated with frontotemporal dementia (FTD), but people with all forms of dementia may develop these symptoms as the dementia disease progresses. Knowledge about psychosocial interventions that meet the needs of people with FTD symptoms, and literature on the subject, is hard to find. The aim of the study was to describe current practice as it is experienced by healthcare experts in the clinical field in Norway.

Method: Three focus groups were conducted. Healthcare personnel with clinical experience in care and treatment to people with FTD and other dementia diseases with frontotemporal symptoms were eligible for inclusion. Qualitative directed content analysis with open coding focusing on both manifest and latent content was applied.

Results: Four categories were described: (1) Dilemmas of anosognosia, (2) establishment of a diagnosis, (3) establishment of post-diagnostic support at home, and (4) establishment of care in the nursing home.

Conclusion: People with FTD and other dementias with frontotemporal symptoms need rigid, easy-to-understand, predictable surroundings and healthcare personnel that are clear, friendly, and respectful in their communication. Post-diagnostic support provided in flexible systems ensuring smooth transitions between services and levels of care is required. To ensure quality of care, frontline healthcare staff should be able to recognize FTD symptoms. To achieve this, supervision and training are needed. More research about clinical care interventions and how to derive good nursing practice should be prioritized.

Marit Mjørud, Anne-Brita Knapskog, Marit Nåvik & Janne Røsvik

Abstract

Background
Infections may contribute to Alzheimer’s disease (AD) pathogenesis. Prior studies on the relationship between Helicobacter pylori (H. pylori) infection and AD or dementia have shown differing results.ObjectiveWe investigated whether H. pylori serology is associated with the risk of AD and dementia in the Trøndelag Health Study (HUNT).
Methods
The HUNT cohort study measured serum H. pylori antibody titers using the Pyloriset EIA-IgG test. 22 years after baseline serum sampling, cognitive assessments were conducted using standardized tests and proxy interviews. We performed logistic regression (n = 1364) adjusted for sex and age to estimate odds ratios for cognitive outcomes. Subgroup analyses were stratified by sex, age, Apolipoprotein E4 (APOE ε4) carrier status and high sensitivity serum C-reactive protein levels and sensitivity analyses further adjusted for lifestyle and co-morbidity risk factors. Cox regression models (n = 4689) were used to estimate hazard ratios for all-cause mortality.
Results
H. pylori titers were not associated with AD (OR 0.99 per 1 SD higher titer, 95% CI 0.82-1.20) or dementia (OR 0.98, 95% CI 0.84-1.15). There were no associations between H. pylori seropositivity (≥ 300 titers) and AD (OR 1.10, CI 0.75-1.63) or dementia (OR 0.96, CI 0.68-1.32). Stratifications by sex, age, CRP, or APOE ε4 genotype and adjusting for additional covariates showed no associations. All-cause mortality was higher with H. pylori positivity (HR 1.07, CI 1.03-1.11).
Conclusions
H. pylori was not associated with later AD or dementia in this study. The relationship between specific versus multi-pathogenic infection burden and neurodegenerative diseases warrants further clarification.

Pieta T Kelsey, Geir Selbæk, Hugo Lövheim, Bjørn Olav Åsvold, Kristian Hveem, Brooke N Wolford & Håvard K Skjellegrind

Abstract

Introduction: Efficient and cost-effective diagnostic tools for supporting dementia assessment are increasingly important. We aimed to evaluate whether providing neuroradiologists with volumetric data from an automatic MRI software, NeuroQuant, enhanced the diagnostic accuracy of their visual MRI assessment.

Methods: Two neuroradiologists assessed brain MRIs from 366 patients (mean age 67.5 years, SD 9.2, and 52% females) with subjective cognitive decline (SCD, n 79), mild cognitive impairment (MCI, n 86), or dementia (n 201). The MCI and dementia patients were further diagnosed according to an etiology of Alzheimer’s disease (AD, n 217) versus non-AD (n 70). In random order the neuroradiologists visually evaluated medial temporal lobe atrophy (MTA, scale 0-4) with and without having access to the NeuroQuant report of age and sex adjusted volumetric percentiles of the hippocampus. Receiver operating characteristics (ROCs) analyses were conducted to calculate the area under the curves (AUCs) for the visual MTA, the automated NeuroQuant percentile, and the combined NeuroQuant-assisted MTA in discriminating dementia from SCD and AD from non-AD.

Results: The AUC of the visual MTA for dementia versus SCD discrimination increased slightly but not significantly when the neuroradiologists were provided with NeuroQuant results (AUC 0.76-0.79, p 0.28). Yet, the isolated NeuroQuant evaluation reached the highest accuracy (AUC 0.85, p < 0.001), significantly better than the MTA assessment (p 0.002) and the NeuroQuant-assisted MTA (p 0.04). Only the isolated NeuroQuant assessment discriminated AD from non-AD (AUC 0.60, p 0.006).

Conclusion: On the basis of our findings, we suggest an increased use of clinically approved automatic volumetry methods in radiological departments.

Karin Persson, Hanneke F M Rhodius-Meester, Trine Holt Edwin, Anne-Brita Knapskog, Peter Bekkhus-Wetterberg, Geir Selbæk, Knut Engedal, Till Schellhorn

Abstract

Bernt Bratsberg, Jennifer R Harris, Vegard Skirbekk, Yaakov Stern, Asta Kristine Håberg, Geir Selbæk, Bjørn Heine Strand, Trine Holt Edwin

Abstract
Introduction: It is unclear how dementia affects loss in life expectancy (LE). In this registry-based study, we aimed to study sex differences in LE and loss in LE in dementia, mild cognitive impairment (MCI), and subjective cognitive decline (SCD).

Methods: A total of 16,358 patients diagnosed with dementia, MCI, or SCD from the Norwegian Registry of Persons Assessed for Cognitive Symptoms (NorCog) during 2009-2022 were included and followed up for mortality. Sex differences in LE and loss in LE were predicted using flexible parametric survival models and sex-specific mortality in the general population as reference.

Results: Among dementia patients, women with dementia had the largest loss in LE: 17 years loss at 60 years; correspondingly, men lost 13.5 years. Similar patterns were observed for MCI and dementia subtypes.

Discussion: Women with dementia or MCI had a larger loss in LE compared to men with these diagnoses.

Highlights: Women with dementia had the largest loss in life expectancy compared to the general population.The excess female loss in life expectancy was also evident for all the dementia subtypes and for mild cognitive impairment.The loss in life expectancy was more pronounced in younger patients with dementia, with a loss of 17 years in women at 60 years of age. Men, in comparison, lost 13.5 years at the same age.Subjective cognitive decline was associated with a minor loss in life expectancy in both sexes.

Rachel Amland, Geir Selbæk, Anne Brækhus, Hanneke F M Rhodius-Meester, Bjørn H Strand

Abstract:
Background:
With increasing population longevity, Alzheimer’s disease and dementia have become a health priority, and high-quality incidence estimates are needed.

Objective:
To provide reliable and precise incidence estimates of dementia applying a population-based sample of individuals aged 70+.

Methods:
A longitudinal cohort design was used, with baseline assessment in the Norwegian HUNT4 70+ study (2017–19) and at follow-up four years later (2021–23). Age-specific dementia incidence rates, standardized for the Norwegian population, were calculated as the number of new dementia cases per 1000 person-years assuming onset midway between study waves with inverse probability weights based on baseline factors associated with non-participation or death.

Results:
Among 5229 dementia-free individuals at baseline, 749 developed dementia over a 4.2-year period, resulting in a cumulative incidence proportion of 14.3%. At follow-up, 33.8% of new dementia cases showed no baseline cognitive impairment, while the rest had mild cognitive impairment (MCI). Of those with baseline MCI, 25.5% reverted to normal cognition, 48.2% remained MCI, and 26.2% developed dementia. The dementia incidence per 1000 person-years, was 43.9 (95% confidence interval (CI) 40.8, 47.1) (weighted for non-response and standardized to the dementia-free Norwegian population).

Conclusions:
Our study found higher dementia incidence rates in the 70+ population than hospital records indicate. Most individuals had preceding MCI, with similar numbers reverting to normal cognition as developing dementia. The projected incident dementia cases suggest a near doubling between 2023 and 2050, significantly impacting families and healthcare planning, including early detection and interventions.

Inger Molvik, Bjørn Heine Strand, Anne Marie Mork Rokstad, Eivind Aakhus, Stina Aam, Sverre Bergh, Anne Brækhus, Knut Engedal, Linda Gjøra, Grete Kjelvik, Marte Kvello-Alme, Gill Livingston, Fiona E Matthews, Karin Persson, Håvard Kjesbu Skjellegrind, Geir Selbæk

Abstract

Objectives:
The study aimed to investigate the psychometric properties of the Norwegian version of the Threadgold Communication Tool, a proxy-rated instrument assessing communication abilities in people with dementia.

Design:
The study employed a prospective design, with two measurement points within 10 days. The Threadgold Communication Tool was translated into Norwegian following the World Health Organization’s protocol for translation and back-translation.

Setting and participants:
The study included 126 residents from ten different nursing homes and one assisted living facility in Norway. The participants consisted of 99 women (78.57 %) and 27 men (21.43 %), aged between 61 and 100 years, with a mean age of 85.67 (SD 7.59).

Outcome measures:
The outcome measures were the internal consistency, test-retest reliability, and construct validity of the Threadgold Communication Tool.

Results:
The Norwegian version of the Threadgold Communication Tool demonstrated satisfactory psychometric properties, with a high level of internal consistency (Cronbach’s α coefficient = 0.95) and robust test-retest reliability (r = 0.8, p < 0.001). Principal Component Analysis revealed a two-component structure, explaining 62.9 % of the variance. However, the item ‘vocalization’ scored lower than other items and was identified as difficult to interpret by the Sonas Licensed Practitioners.

Conclusions:
The Norwegian version of the Threadgold Communication Tool is a reliable and valid tool for assessing communication abilities in people with dementia. However, further research is needed to refine the instrument based on these findings, particularly regarding the interpretation of the ‘vocalization’ item.

Anne-Martha Utne Øygarden, Ellen Karine Grov, Anne Marie Mork Rokstad, Orla Brady, Knut Engedal, Benedicte Sørensen Strøm

Abstract

Meaning in life is a key aspect of our well-being and is a central issue within the field of existential health. Knowledge is scarce on the experience of meaning in life of people living with dementia. Dementia is defined as loss of memory and other cognitive abilities, reducing the person’s ability to perform activities of daily living. This poses challenges to interviewing and including persons with dementia in qualitative research. In this study we explore how nursing home residents with dementia experience meaning in life, and how they can reflect on this existential question. We used an exploratory qualitative design with semi-structured interviews of ten people with mild to severe dementia living in one nursing home and found that conversations about meaning in life with persons with dementia were feasible. Some memories of the past were told as if they were happening here and now, and some topics were repeated several times throughout the interview. This study highlights the importance of awareness of existential themes and interventions facilitating meaning in life for this population, despite certain challenges to be overcome. The past and present merge, giving their stories a unique character. This holds significance for the moment by providing insight into how cognitive impairment might affect the perception of time. It is important to acknowledge this perspective and understand that meaning in life may be connected to memories and experiences from the past, and that this might be more prominent for this group than others.

Silje M Nylund, Lars Danbolt, Ingvild Hjorth Feiring, Sverre Bergh, Bjørn Lichtwarck, Øyvind Kirkevold & Knut A. Hestad