Dementia e Neuropsychologia最新文献

Five Digit Test (FDT) is an executive function assessment tool designed to be used across the lifespan, from children to the aged.

Objective: To provide validity evidence for FDT in the neuropsychological assessment of working memory in the aged.

Methods: A total of 100 subjects, aged between 56 and 86 years, representing both genders with varying levels of education, underwent a comprehensive clinical history and neuropsychological evaluation using FDT. The mean age of participants was 71.04 years, with 67.3% having intermediate education. Participants were categorized into two groups: Control Group and Cognitive Decline Group. To establish validity evidence, FDT scores (both time and errors) were correlated with the WAIS-III Digits scale. Spearman's correlation coefficient and ROC curve methodology were employed to determine psychometric properties.

Results: A significant and moderate negative correlation was evident between FDT Shifting (number of errors) and Digits score (rho=-0.51; p<0.0001), Direct Order (rho=-0.39; p<0.0001), and Indirect Order (rho=-0.46; p<0.0001). The area under the curve was higher for FDT Shifting (errors) (AUC=0.935) for a cutoff point greater than or equal to 5 points, compared to Digits (AUC=0.748).

Conclusion: The assessment of the number of errors in FDT Shifting appears to be a statistically significant tool for evaluating working memory impairment in the aged.

Although the most prominent symptoms of Parkinson's disease (PD) are those impacting movement, cognitive dysfunction is prevalent and often presents early in the disease process. Individuals with cognitive symptoms of PD often complete cognitive screening, making it important to identify factors associated with cognitive screening performance to ensure prompt and accurate detection of cognitive impairments.

Objective: Despite a body of research examining relationships between motor symptoms and cognitive dysfunction in PD, no prior study has undertaken a systematic review of the magnitude of the relationship between motor symptoms and cognitive screening performance in PD.

Methods: This study was a systematic review and meta-analysis of the relationship between cognitive screening performance, as assessed by the Montreal Cognitive Assessment (MoCA), and motor symptoms of PD. After the systematic screening, 20 studies were included, and meta-regressions using mixed-effects models were conducted.

Results: Motor symptoms across included studies were relatively mild, but average MoCA scores were at the established cutoff for risk of dementia in PD. The average disease duration was 5 years. Consistent with hypotheses, more severe motor symptoms were associated with lower MoCA scores (r=-0.22 (95%CI -0.29 to -0.16), p<0.001), indicating worse cognitive functioning.

Conclusion: The results indicate a significant negative correlation between MoCA performance and motor symptoms of PD. Average MoCA scores captured early disease-stage cognitive impairment when motor symptoms remained relatively mild. Serial screening for cognitive impairment beginning early in the disease course may be of benefit to ensure that cognitive dysfunction is detected as it arises.

Dementia is one of the growing diseases in the world and has different types based on its definition. The Montreal Cognitive Assessment (MoCA) test has been employed to screen patients with dementia, cognitive impairment, and disruption of daily activities.

Objective: This study examined the diagnostic value of the total MoCA score and its subscores in differentiating Alzheimer's disease (AD), frontotemporal dementia (FTD), dementia with Lewy body (DLB), and vascular dementia (VaD).

Methods: A total of 241 patients (AD=110, FTD=90, DLB=28, and VaD=13) and 59 healthy persons, who were referred to a dementia clinic with memory impairment in Firoozgar Hospital, were included in this study. MoCA tests were performed in all patients and normal persons.

Results: By using the receiver operating characteristic (ROC) curve and measuring the area under the curve (AUC) for the total MoCA score in each group, AUC was 0.616, 0.681, 0.6117, and 0.583 for differentiating AD, FTD, DLB, and VaD patients, respectively. Among the groups, just the VaD group showed no significant usefulness in using the total MoCA score to differentiate it. To compare MoCA subscores, AD patients had higher scores in digit span, literal fluency, and abstraction but lower delayed recall scores compared with FTD patients.

Conclusion: The total MoCA score and its subscores could not differentiate people with different types of dementia in the setting of screening.

The World Health Organization developed the "iSupport for Dementia" program for family caregivers of people with dementia.

Objective: To explore studies on adaptation, randomized clinical trial protocols, and preliminary results of iSupport by unpaid caregivers of people living with dementia in different countries.

Methods: Systematic review.

Results: Ten cultural adaptation studies, eight randomized clinical trial protocols, and two preliminary results were included. Adaptation studies showed adjustments in terminology, design, and additional resources. Clinical trial protocols included burden as the primary outcome, and baseline, three months of intervention, and follow-up after six months. Studies with preliminary results found positive effects on the mental health and well-being of caregivers after using the program.

Conclusion: iSupport is an online program of the World Health Organization in response to dementia in implementation in different countries.

The global increase in the aging population has raised concerns over various age-related conditions like dementia and mild cognitive impairment (MCI) and their consequences on the affected persons. People with MCI exhibit cognitive deficits more significantly than expected for their age and literacy level. Though the nature of this condition is considered "mild", studies have reported that even more subtle deficits can influence the quality of life (QOL).

Objective: The present work aimed at exploring and comparing QOL in older adults with and without MCI through a systematic review and meta-analysis.

Methods: After a detailed search of articles till May 2021 in the relevant electronic databases (PubMed Central, PubMed, Scopus, CINAHL Plus, Web of Science, ProQuest, and Cochrane) using the keywords "mild cognitive impairment", "quality of life", "old", "old aged", "aged", "older adult", "geriatrics", "healthy controls", "healthy participants", and "normal controls", we included 23 articles in the systematic review and 12 in the meta-analysis.

Results: The quality of all the included articles were assessed using the Modified Downs and Black tool. Most of the studies in the systematic review demonstrated differences in QOL scores in older adults with MCI compared to healthy older adults. However, meta-analysis findings suggest that older adults with MCI had statistically non-significant yet lower differences in QOL compared to their healthy counterparts.

Conclusion: Future research should focus on developing QOL assessment tools specifically for older adults with MCI and follow-up studies that could provide better knowledge of their changing cognitive profile and life quality.

It is estimated that 45% of individuals with cognitive impairment experience sleep disturbances prior to the onset of cognitive symptoms. Assessing sleeping problems and enhancing sleep quality are critical first steps to reduce the risk of cognitive impairment.

Objective: To review existing literature based on predefined eligibility criteria to understand the connection between sleep disturbance and Alzheimer's disease.

Methods: A thorough and systematic evaluation of numerous studies was carried out to assess one or more of the following epidemiological factors: (1) sleep disorders, (2) cognitive impairment, and (3) risk estimates for cognitive impairment due to sleep.

Results: Studies suggest that individuals who experience memory loss may encounter sleep disturbances before noticing other symptoms. Numerous sleep disorders, such as excessive and inadequate sleep duration, poor sleep quality, circadian rhythm abnormalities, insomnia, and obstructive sleep apnea were found to increase the risk of cognitive dysfunction and dementia. Additionally, lower sleep quality and shorter sleep duration have been linked to higher cerebral-β-amyloid levels. Objective evidence for the development of cognitive impairment is provided by the architecture of sleep stages. Patients experiencing sleep problems may benefit from specific types of sleep medicine as a preventative measure against cognitive decline.

Conclusion: Sleep disorders can have adverse effects on cognitive health. The duration and quality of sleep are fundamental factors for maintaining a healthy brain as we age. Proper sleep can aid prevent cognitive impairment, particularly Alzheimer's disease and dementia.

Today, talking about autism spectrum disorder (ASD) is the same as talking about cases that occur in one in 160 births worldwide. Some of them will be able to live independently when they grow up while others will have less autonomy and will be more dependent, requiring the support of caregivers throughout their lives.

Objective: Understanding the emotional burden that this could generate on parents, we sought to analyze the level of stress and coping techniques in caregivers of children with ASD in Chile, 2021.

Methods: Interview with a sample composed of 61 parents or guardians of people with ASD.

Results: After data analysis, it was possible to perform a statistically significant correlation (p=0.002) between the level of stress and the coping strategies (problem-solving, self-criticism, emotional expression, wishful thinking, social support, cognitive restructuring, problem avoidance, and social withdrawal). In addition, positive strategies that reduce stress levels in parents or caregivers of children with ASD were identified (problem resolution, cognitive restructuring, social support, and emotional expression).

Conclusion: Through this research, it was possible to respond to each of the stated objectives, managing to determine what were the characteristics of caregivers and their main difficulties. It was also observed that the majority lost the possibility of working to dedicate themselves to the care of the diagnosed person.

The aging of the world population has led to an increase in the epidemiology and burden of Alzheimer's disease and other dementias.

Objective: To describe the global burden of young-onset Alzheimer's disease and other dementias by world region and income through a secondary analysis of the Global Burden of Disease Study 2019.

Methods: This is a descriptive cross-sectional ecological study. Data by sex and five-year age groups from 40 to 64 years were extracted from the Global Burden of Disease Study results tool. We performed a descriptive analysis of prevalence, incidence, deaths, disability-adjusted life years, years of life lost, and years lived with disability.

Results: In 2019, young-onset Alzheimer's disease and other dementias presented a prevalence of 2.67 cases and an incidence of 0.44 per 1,000 inhabitants globally. It carried a significant burden, resulting in 1.16 disability-adjusted life years per 1,000 inhabitants, primarily due to years of life lost, and to a lesser extent due to years lived with disability. East Asia & the Pacific, Latin America & the Caribbean, and North America are the most affected regions. Burden rates are consistently higher among women; no gradient was observed by country income. Smoking was the most relevant risk factor, presenting a broad difference by country income level.

Conclusion: The global burden of young-onset Alzheimer's disease and other dementias may reshape healthcare requirements and the societal impact of dementias, and its understanding is relevant to inform decisions related to service offerings and research agendas.

Despite the increasing knowledge in the past years, only minimal attention has been directed to the neuropsychological aspects and the prevalence of cognitive impairment associated with reversible cerebral vasoconstriction syndrome (RCVS).

Objective: To describe the frequency and expand the understanding of cognitive dysfunction in RCVS.

Methods: The neuropsychological evaluation was performed using a battery consisting of specific neuropsychological instruments that were administered to patients diagnosed with RCVS. A triage was conducted to exclude other potential causes of cognitive impairment. Performance on the tests was treated as a categorical variable, and a cutoff of -1.5 Z-score was adopted to indicate impaired performance.

Results: Seven patients diagnosed with RCVS were evaluated, all of whom had a bachelor's degree and normal score in the Mini-Mental State Examination. The average time between diagnosis and neuropsychological evaluation was 1.8 years. Among the patients, 85.6% (n=6) exhibited performance below that of the normal population in at least two of the administered tests. Specifically, 71.4% (n=5) showed alterations in tests from the Psychological Battery for Attention Assessment, with impairment observed in concentrated (n=1), divided (n=3), or alternating (n=4) attention. Furthermore, 28.6% (n=2) demonstrated impairments in the Phonological Verbal Fluency Task, another 28.6% (n=2) exhibited difficulties copying elements of the Rey Complex Figure, and 14.3% (n=1) displayed lower performance in the Five-Digit test, all indicating executive dysfunction.

Conclusion: This study provides evidence that cognitive impairment associated with RCVS is more prevalent than previously believed and has not received sufficient attention. Specifically, attention and executive functions are the cognitive domains most significantly impacted by RCVS.

The majority of people with dementia live in low or middle-income countries (LMICs) where resources that play a crucial role in brain health, such as quality education, are still not widely available. In Brazil, illiteracy remains a prevalent issue, especially in communities with lower socioeconomic status (SES). The PROAME study set out to explore basic education in illiterate adults as a means to improve cognitive reserve.

Objective: This manuscript aims to explore the relationship between SES and learning, as well as cognitive outcomes, in an older illiterate population.

Methods: This six-month clinical trial (NCT04473235) involved 108 participants, of which 77 concluded all assessments, enrolled in late-life basic education. SES assessments included Quality of Urban Living Index, Municipal Human Development Index and Household SES calculated for each participant. Cognitive assessments encompassed the Free and Cued Selective Reminding Test (FCSRT), a word list to assess reading, and the Beta III matrix.

Results: The sample consisted primarily of women, with a mean age of 58.5. Participants improved their reading (p=0.01) and their FCSRT (p=0.003). Regarding episodic memory, women outperformed men (p=0.007) and younger participants improved more than their older counterparts (p=0.001). There was no association observed between SES and cognitive outcomes.

Conclusion: Irrespective of SES, participants demonstrated positive outcomes after attending basic education. These findings highlight that late life education could be an important non-pharmacologic preventative measure, especially in LMICs.