Factors influencing time between onset of signs/symptoms and referral for dementia in elderly outpatients

Distal radius fractures and risk of incident neurocognitive disorders in older adults: a retrospective cohort study

INTRODUCTION

Distal radius fractures (DRF) are associated with increased risk of subsequent fractures and physical decline in older adults. This study aims to evaluate the risk cognitive decline following DRF and potential for timely screening and intervention.

METHODS

A cohort of 1046 individuals 50-75 years of age with DRF were identified between 1995 and 2015 (81.5% female; mean age 62.5 [± 7.1] years). A control group (N = 1044) without history of DRF was matched by age, sex, and fracture date (i.e., index). The incidence of neurocognitive disorders (NCD) in relation to DRF/index was determined. Group comparisons were adjusted by age and comorbidity measured by the Elixhauser index.

RESULTS

The DRF group had a greater incidence of NCD compared to the control group (11.3% vs. 8.2%) with a 56% greater relative risk (HR = 1.56, 95% Cl: 1.18, 2.07; p = 0.002) after adjusting for age and comorbidity. For every 10-year age increase, the DRF group was over three times more likely to develop a NCD (HR = 3.23, 95% Cl: 2.57, 4.04; p < 0.001).

CONCLUSION

DRF in adults ages 50 to 75 are associated with increased risk of developing neurocognitive disorders. DRF may represent a sentinel opportunity for cognitive screening and early intervention. Distal radius fractures (DRF) have been associated with greater risk of future fractures and physical decline. This study reports that DRF are also associated with greater risk of developing neurocognitive disorders in older adults. Timely intervention may improve early recognition and long-term outcomes for older adults at risk of cognitive decline.

Frequency of missed or delayed diagnosis in dementia is associated with neighborhood socioeconomic status

Introduction

Underdetection of dementia in areas with low socioeconomic status (SES) may interfere with findings concerning associations between SES and dementia.

Methods

Using administrative registers we assessed the associations between age- and sex-adjusted dementia incidence and neighborhood socioeconomic status (nSES) in 94 Danish municipalities. Wealth was divided into income quartiles and other nSES variables were dichotomized into high versus low according to the median.

Results

High population density (odds ratio [OR] 1.21, 95% confidence interval [CI] 1.18-1.24), higher proportion of inhabitants in higher income quartiles (P for trend < .0001), and high educational level (OR 1.19, 95% CI 1.15-1.22) were associated with higher incidence of dementia. High proportion of residents above 65 years was associated with lower age-adjusted dementia incidence (OR 0.86, 95% CI 0.84-0.89).

Discussion

Low nSES municipalities have a lower age-adjusted incidence of dementia diagnosis. These findings corroborate prior concerns that a large number of dementia diagnoses may be missed in municipalities characterized by low SES.

Self-Administered Gerocognitive Examination: longitudinal cohort testing for the early detection of dementia conversion

Background

Significant cognitive changes as individuals’ age are not being identified in a timely manner, delaying diagnosis and treatments. Use of brief, multi-domain, self-administered, objective cognitive assessment tools may remove some barriers in assessing and identifying cognitive changes. We compared longitudinal Self-Administered Gerocognitive Examination (SAGE) test scores to non-self-administered Mini-Mental State Examination (MMSE) scores in 5 different diagnostic subgroups.

Methods

A cohort study evaluating annual rates of change was performed on 665 consecutive patients from Ohio State University Memory Disorders Clinic. Patients with at least two visits 6 months apart evaluated with SAGE and MMSE and classified according to standard clinical criteria as subjective cognitive decline (SCD), mild cognitive impairment (MCI), or Alzheimer’s disease (AD) dementia were included. The pattern of change in SAGE scores was compared to MMSE. One way and repeated measures ANOVA and linear regression models were used.

Results

Four hundred twenty-four individuals (40 SCD, 94 MCI non-converters to dementia, 70 MCI converters to dementia (49 to AD dementia and 21 to non-AD dementia), 220 AD dementia) met inclusion criteria. SAGE and MMSE scores declined respectively at annual rates of 1.91 points/year (p < 0.0001) and 1.68 points/year (p < 0.0001) for MCI converters to AD dementia, and 1.82 points/year (p < 0.0001) and 2.38 points/year (p < 0.0001) for AD dementia subjects. SAGE and MMSE scores remained stable for SCD and MCI non-converters. Statistically significant decline from baseline scores in SAGE occurred at least 6 months earlier than MMSE for MCI converters to AD dementia (14.4 vs. 20.4 months), MCI converters to non-AD dementia (14.4 vs. 32.9 months), and AD dementia individuals (8.3 vs. 14.4 months).

Conclusions

SAGE detects MCI conversion to dementia at least 6 months sooner than MMSE. Being self-administered, SAGE also addresses a critical need of removing some barriers in performing cognitive assessments. Limitations of our single-site cohort study include potential referral and sampling biases. Repetitively administering SAGE and identifying stability or decline may provide clinicians with an objective cognitive biomarker impacting evaluation and management choices.

Understanding help-seeking decisions in people with subjective cognitive decline: A systematic review of qualitative studies

OBJECTIVE

To synthesize the findings of qualitative research on help-seeking in people with subjective cognitive decline.

METHODS

Relevant qualitative studies were identified by searching the PubMed, CINAHL, Ovid Medline, PsycInfo, Embase, and Web of Science databases. Studies that investigated help-seeking behavior in older adults with subjective cognitive decline were retrieved. The systematic review was conducted in line with JBI methodology for systematic reviews of qualitative evidence.

RESULTS

11 studies were included and three themes related to the process of help-seeking for cognitive problems emerged. These themes included: detected changes, challenges in identifying the need for help and decision to seek professional help.

CONCLUSION

Making decisions to seek help for people with subjective cognitive decline is a multi-stage process. A better understanding of the complex psychological responses to subjective cognitive decline among older adults may help health care professionals to develop strategies to improve help-seeking in clinical practice.

Improvement of cognitive performance by a nutraceutical formulation: Underlying mechanisms revealed by laboratory studies

Cognitive decline, decrease in neuronal function and neuronal loss that accompany normal aging and dementia are the result of multiple mechanisms, many of which involve oxidative stress. Herein, we review these various mechanisms and identify pharmacological and non-pharmacological approaches, including modification of diet, that may reduce the risk and progression of cognitive decline. The optimal degree of neuronal protection is derived by combinations of, rather than individual, compounds. Compounds that provide antioxidant protection are particularly effective at delaying or improving cognitive performance in the early stages of Mild Cognitive Impairment and Alzheimer's disease. Laboratory studies confirm alleviation of oxidative damage in brain tissue. Lifestyle modifications show a degree of efficacy and may augment pharmacological approaches. Unfortunately, oxidative damage and resultant accumulation of biomarkers of neuronal damage can precede cognitive decline by years to decades. This underscores the importance of optimization of dietary enrichment, antioxidant supplementation and other lifestyle modifications during aging even for individuals who are cognitively intact.

Embarking on a memory assessment voices of older persons living with memory impairment

AIM

To describe older persons who had commenced a memory assessment, experiences of living with memory impairment and related symptoms.

BACKGROUND

Persons with subjective memory impairment are two times more likely to develop dementia over the years than their peers. Older persons seldom seek help from primary health care clinics solely for subjective memory impairment. Of those who seek help, it can take up to 35 months from the person experiencing initial symptoms to referral to a memory clinic. Further research is needed regarding how older persons live with memory impairment with related symptoms before they receive a memory diagnosis.

METHOD

A qualitative study with 23 participants who had commenced a memory assessment in primary care. Semi-structured interviews were held. During the interviews, the Neuropsychiatric Inventory was completed and discussed with the participants. Interview data were analysed using Interpretive Description.

RESULTS

The results are presented under four themes: Conflicting views about the situation, Unveiling the presence of neuropsychiatric symptoms, Compensating with external and internal strategies to recall and Worrying about self and future. Persons with memory impairment were encouraged by family members or others to seek a memory assessment. Few persons were self-referred as memory impairment was often seen as a part of aging. Polarised viewpoints existed within the families regarding the impact of memory impairment on daily life. The presence of neuropsychiatric symptoms appeared unexplored in the participants seeking a memory assessment. In this study, the majority of participants experienced neuropsychiatric symptoms at the time of contact for a memory assessment.

CONCLUSIONS

Memory problems experienced were often viewed by the person as being part of an aging process. The presence of neuropsychiatric symptoms was not acknowledged as being connected to memory impairment. Contextualising 'memory impairment' as a part of a 'cognitive process' may help the person in identifying the presence of neuropsychiatric symptoms.

Relative Efficacy of a Nutritional Intervention on Cognitive Performance Across the Adult Lifespan and During Early Cognitive Decline

A nutritional supplement has maintained or improved cognitive performance for healthy adults and individuals with mild cognitive impairment (MCI). Performance varied between 93 healthy adults aged 18-73 years versus 43 aged 75-85 years and among individuals with MCI. Healthy adult performance was stratified by age and for MCI as "intact" or "impaired" (Dementia Rating Scale guidelines). Some older individuals performed as well as younger individuals. All intact individuals with MCI maintained baseline performance; only impaired individuals receiving the supplement maintained baseline performance. Variation among elderly individuals can preclude observation of efficacy. Supplementation may maintain rather than improve performance for some individuals.

Apparent Cognitive Decline as Revealed by an Executive Function Test within a Cohort of Elderly Individuals Self-Reporting Normal Cognitive Performance

Alzheimer's disease (AD) can be preceded by subtle memory decline that can last a decade or more before progressing to what would be diagnosed as the mild cognitive impairment stage. During this early stage of decline, individuals and even their caregivers can fail to perceive any serious difficulty or need to consult a physician. Herein, we present evidence in support of these concerns, and demonstrate how this can interfere not only with clinical trials of AD but also those involving cognitive performance of elderly individuals without intentional reference to AD.