A Tablet App Supporting Self-Management for People With Dementia: Explorative Study of Adoption and Use Patterns.

BACKGROUND: Assistive technology (AT) is rapidly emerging within dementia care and support. One area of AT application is support of people with dementia in compensating for cognitive symptoms and thereby promoting their self-management. There is, however, little evidence for the applicability, usability, and effectiveness of AT for people with dementia, and there is a need to identify factors that can promote adoption. OBJECTIVE: This study aimed to (1) evaluate the applicability and usability of an app, tailor-made for people with dementia; (2) explore factors affecting adoption; (3) explore the possible influence of caregiver involvement; and (4) contribute to process evaluation of the intervention. METHODS: The ReACT (Rehabilitation in Alzheimer's disease using Cognitive support Technology) app was designed as a holistic solution to support memory and structure in daily living. Persons with dementia had access to a personal user account, and family caregivers were given a parallel login. Written and Web-based materials were provided to support self-applied implementation. A mixed methods design was applied to explore adoption and use patterns, including background and disease-related data, qualitative data from a survey, and log data. Adoption was defined as the use of the app over a period of ≥90 days. RESULTS: Data from 112 participants and 98 caregivers were included. Shorter time from diagnosis (U=595; P=.046; r=0.19) and caregiver activating the app (P=.02) had a significant impact on the participant adoption status. Logistic regression analysis showed that if caregivers had activated the app, the participant was five times more likely to become an adopter (odds ratio 5.1, 95% CI 1.29-19.99; P=.02). However, the overall predictive power was low, and there was a wide variation in background and disease-related characteristics among adopters. The level of experience and skills in tablet use were not significantly different between adopters and nonadopters. Adopters generally rated the app high on usefulness, satisfaction, and ease of use (rated on the USEdem questionnaire). Their scores were significantly higher compared with nonadopters (U=5.5; P=.02; r=0.64). Analysis of use patterns showed that all functionalities of the app were used among adopters. CONCLUSIONS: For participants who became adopters, the ReACT app and the methods for self-applied implementation were applicable. However, the results were also in accordance with the well-known challenges of nonadoption and nonadherence to digital health interventions. The study provided insight into the importance of timely introduction and caregiver support for adoption of AT among people with dementia. It also underlined the high complexity of personal and contextual factors that influence adoption. These complex factors need to be considered when designing and implementing AT for people with dementia.

White matter hyperintensities and prepulse inhibition in a mixed elderly population.

Prepulse inhibition (PPI) of the startle response, a measure for sensorimotor gating, exhibits a relatively high inter-individual variability in elderly subjects. The aim of this study was to investigate whether white matter hyperintensities (WMH), frequently identified on cranial magnetic resonance imaging (MRI) in elderly subjects with and without cognitive impairment, may contribute to variations in PPI. A passive acoustic PPI paradigm was applied in 92 human subjects (53 healthy and 39 patients with Alzheimer's disease or mild cognitive impairment) between 60 and 85years of age. WMH were rated visually on craniel MRI FLAIR images using the Fazekas scale. WMH were identified in 70% of all subjects. The latency to peak of the startle response increased significantly with increasing WMH load, whereas the inhibition of the startle response (PPI) was neither significantly related to the degree of WMH nor to cognitive performance. We conclude that the presence of WMH in the fronto-striatal brain circuit may affect the latency of the startle response, but not information processing in elderly subjects.

Access to diagnostic evaluation and treatment for dementia in Europe.

This paper reviews and discusses existing barriers to diagnosis and treatment for patients with dementia in Europe as well as approaches to overcome these barriers. The barriers to care are manifold, being present at all levels in each society and between countries in Europe. Multilevel and multifaceted strategies are needed to improve diagnosis and treatments for all patients with cognitive complaints. A multidisciplinary approach based on close collaboration between GPs and specialised memory clinics may be the ideal model for early accurate diagnosis and subsequently early pharmacological and psychosocial interventions. For all healthcare professionals, there should be specialised training in dementia and frequently updated practice guidelines to provide the framework for standards of care. Culture-sensitive strategies to promote public knowledge and destigmatize dementia are essential. Policy makers and authorities should be made aware of the benefits of early access to diagnosis and treatment.

Prepulse inhibition in patients with Alzheimer's disease.

Prepulse inhibition (PPI) is used as a measure for sensorimotor gating. Studies in animals have indicated that hippocampus and entorhinal cortex, structures which are affected in mild Alzheimer's disease (AD), are involved in the regulation of PPI. The objectives of this study were to determine if patients with very mild AD had altered PPI, and to study possible correlations between PPI and cognitive performance or neuropsychiatric symptoms. A passive acoustic PPI paradigm was applied in 48 patients with either mild AD or Mild Cognitive Impairment (MCI) and in 49 healthy controls. No differences were found between patients and healthy controls regarding PPI. Further, PPI was not found to correlate with cognitive performance or neuropsychiatric symptoms. PPI is significantly altered in patients with neuropsychiatric disorders associated with dopaminergic, glutamatergic and/or serotonergic dysfunctions, such as schizophrenia. Since mild AD is primarily associated with loss of cholinergic markers in the limbic regions this study suggests that acetylcholine only plays a minor role in the regulation of PPI.