Obese Body Mass Index in late-life as a protective factor for Mild Cognitive Impairment, Dementia and Death

Objective: The goal of the current study was to estimate the hazards of conversion from unimpaired to mild cognitive impairment (MCI) to probable dementia and death for underweight, normal, overweight and obese older adults in an aging cohort where the timing of examinations may be associated with the severity of dementia. Methods: We analyzed six waves of the National Health and Aging Trends Study (NHATS); a longitudinal aging cohort. Participants were classified into mutually exclusive cognitive statuses: cognitively unimpaired, MCI, probable dementia and death. Time-to-event ratios and cognitive transitions were examined with multistate survival models accounting for misclassification. BMI was computed from height and weight measurements and expressed in kg/m2 and categorized into underweight, normal, overweight and obese. Results: Participants (n=6,078) were 77 years old, on average, and the majority were white, females and high school graduates. About one third (32.68%) of the sample has normal BMI, one third is overweight (35.59%), the rests are obese (26.41%) or underweight (5.33%). After adjusting for the effects of diabetes, CVD, vigorous physical activity, age and race/ethnicity, the protective effect of obesity in late-life against developing dementia (HR=0.44; 95%CI[0.29-0.67]) and dying from dementia (HR=0.63; 95%CI[0.42-0.95). Discussion: Prior research shows the risk of dementia associated with obesity at older ages is either attenuated or reversed. Our findings support a protective factor of obesity in late-life against conversion to dementia and death.

Gait, physical function, and physical activity in three groups of home-dwelling older adults with different severity of cognitive impairment – a cross-sectional study

Background The research on associations between gait, physical function, physical activity (PA), and cognitive function is growing. Still, clinical assessments of cognitive function and motor function is often kept separate. In this study, we aimed to look at a broad range of measures of gait, physical function, and PA in three groups of home-dwelling older adults with no or questionable dementia, mild dementia, and moderate/severe dementia. Methods This cross-sectional study included 100 home-dwelling older adults, recruited from an outpatient geriatric memory clinic. Severity of dementia was categorised using the clinical dementia rating scale (CDR), with no or questionable dementia (CDR score 0 and 0.5), mild dementia (CDR score 1) and moderate/severe dementia (CDR score 2 and 3). We used thigh worn accelerometers to measure daily PA, the Short Physical Performance Battery (SPPB) to measure physical function, and an electronic gait mat to evaluate gait characteristics. Associations between severity of dementia and measures of PA, physical function, and gait characteristics were assessed by linear regression. Results Participants’ (mean age 78.9 (SD 6.7) years, 57% women) average gait speed was 0.93 m/sec, and average upright time was 301 min/day. Statistically significant associations were found for the severity of dementia and gait speed (p=0.002), step time (p=0.001), physical function (SPPB, p=0.007), and PA (upright time, p=0.031), after adjusting for age. Overall, having no or questionable dementia was associated with faster gait speed (mean difference 0.163 (95% CI: 0.053 to 0.273)), shorter step time (-0.043 (-0.082 to -0.005)), better SPPB score (1.7 (0.5 to 2.8)), and longer upright time (78.9 (18.9 to 139.0)), compared to those with mild dementia. Furthermore, having no or questionable dementia was also associated with faster gait speed and better SPPB scores, as compared to those with moderate to severe dementia. No evidence of any differences was found between the participants with the mild dementia versus the moderate to severe dementia. Conclusions After adjusting for age, we found that the no or questionable dementia group to be associated with better gait and physical function, and more PA, as compared with the two groups with mild or moderate/severe dementia. Evaluation of gait, physical function, and PA can add clinically important information of everyday functioning in memory clinics meeting geriatric patients, but investigations on how to use these results to guide interventions are still needed.

The Relationship Between Family Caregivers’ Anticipatory Grief and Severity of Dementia

Anticipatory grief is the process of experiencing normal bereavement before the physical death of a significant person. To date, anticipatory grief has been related to higher levels of caregiver depression, anxiety, subjective burden, and poorer problem solving. Additionally, higher levels anticipatory grief are observed in caregivers of those with Alzheimer’s Disease and Related Dementias (ADRD) compared to caregivers of those with mild cognitive impairment, implying a relationship between disease severity and caregiver anticipatory grief. Analyses were performed on data for ADRD caregivers (n=56) enrolled in the IU Telephone Acceptance and Commitment Therapy for Caregiver (TACTICs) trial; an RCT evaluating an ACT intervention for ADRD caregivers with anxiety. Inclusion criteria included identifying as the primary caregiver of an ADRD patient, and clinically significant anxiety (GAD7 score >10). The average age of caregivers was 61.9 years, 41.1% were spouses, 83.9% were white and 14.3% were black. Mean anticipatory grief scores were notably higher (84.6) compared to the previously reported means across the literature (74.9). Using multiple regression models, we determined a caregivers’ anticipatory grief, as measured by the anticipatory grief scale, is not significantly associated with the patients’ dementia severity, as measured by the Dementia Severity Rating Scale (DSRS) (p=0.66), Results revealed that higher levels of caregiver burden, as measured by the Zarit Burden Index, are significantly associated with more anticipatory grief (p< 0.01). Understanding these relationships contributes to a better understanding of ADRD caregivers, identifying “high-risk” caregivers, and informing future interventions and care.

Factors influencing caregiver burden by dementia severity based on an online database from Seoul dementia management project in Korea

Backgrounds As the prevalence of dementia rises, caregiver burden also increases in South Korea, especially for informal family caregivers. This study aimed to analyze factors affecting caregiver burden by the severity of dementia based on data of patients in Seoul. Methods A total of 12,292 individuals aged ≥65 years enrolled in the Seoul Dementia Management Project from 2010 to 2016 in an online database were selected. Caregiver’s burden was assessed using the Korea version of Zarit Burden Interview. Multiple regression analyses were performed to determine factors associated with primary caregiver’s burden after stratifying the severity of dementia. Results Most patients showed moderate levels of cognitive impairment (49.4%), behavior problems (82.6%), and ADL dependency (73.6%). After stratifying the severity of dementia, caregivers caring for patients with mild symptoms of dementia were experienced with higher caregiver burden if patients were under a lower score of IADL. Significant factors for caregiver burden among caregivers supporting patients with moderate symptoms of dementia include caregivers’ residence with patients, subjective health status, and co-work with secondary caregivers. Lastly, caregivers for patients with severe dementia symptoms experienced a higher caregiver burden from limited cognitive function, problematic behavior, and caregivers’ negative health status. Conclusion In terms of sample size, this study had far more patients than any other domestic or international study. It was meaningful in that it analyzed characteristics of patients with dementia and caregivers affecting the burden of caregivers in Korea. Intensive social supports with multiple coping strategies focusing on different levels of patients’ clinical symptoms and caregivers’ needs should be planned to relieve the caregiver burden.

Exploring the impact of Covid-19 on the care and quality of life of people with dementia and their carers: A scoping review

This article reports on findings of a scoping review aimed to map the published literature concerning the impact of Covid-19 on the care and quality of life of people living with dementia and their carers. Twenty-nine articles were included in the review. Three overarching themes were identified: (1) Impact on people with dementia – unmet and increased care needs; (2) Impact on carers – increased stress and burden and (3) Impact according to demographics. Overall, findings show that Covid-19 has led to a reduction in support from health and social services and to a move towards technology-based support. Furthermore, Covid-19 has had a negative impact on the care and quality of life of people living with dementia and their carers, and that this impact was influenced by the severity of dementia.

Prevalence of Behavioral and Psychological Symptoms of Dementia in Community-Dwelling Dementia Patients: A Systematic Review

Background: Identifying the characteristics of behavioral and psychological symptoms of dementia (BPSD) associated with different dementia types may be a promising strategy to effectively deal with BPSD. We aimed to synthesize the prevalence rates of BPSD characteristics in community-dwelling dementia patients.Methods: We searched Medline, EMBASE, and PsycARTICLES databases for original clinical studies published until December 2020 that enrolled at least 300 community-dwelling dementia patients. The methodological qualities of prevalence studies were assessed using the Joanna Briggs Institute's critical appraisal checklist.Results: Thirty studies were included. The prevalence of the BPSD characteristic ranged from 4 (elation and mania) to 32% (apathy) in the pooled samples. The prevalence of delusions, anxiety, apathy, irritability, elation and mania, and aberrant motor behavior in Alzheimer's disease patients was 1.72–2.88 times greater than that in vascular dementia (VD) patients, while the prevalence of disinhibition in VD patients was 1.38 times greater. The prevalence of anxiety, irritability, and agitation and aggression, delusion, hallucinations, apathy, disinhibition, and aberrant motor behavior tended to increase as the severity of dementia increased, while that of depression, eating disorder, sleep disorders, and elation and mania tended to stable. In community-dwelling patients with dementia, the pooled prevalence of apathy, depression, anxiety, irritability, agitation and aggression, sleep disorders, and eating disorder was higher than 20%, while that of disinhibition and elation and mania was lower than 10%.Conclusion: Overall, the pooled prevalence of apathy, depression, anxiety, irritability, agitation and aggression, sleep disorders, and eating disorder was generally high in patients with dementia. Also, the prevalence of some BPSD characteristics differed according to the type and the severity of dementia. The methodological quality of the included studies is not the best, and high heterogeneity may affect the certainty of the findings. However, the results of this review can deepen our understanding of the prevalence of BPSD.Systematic Review Registration:https://osf.io/dmj7k, identifier: 10.17605/OSF.IO/DMJ7K.

549 - Psychosocial factors in the formation of non-cognitive symptoms of dementia

Background:The growing prevalence of severe cognitive impairment in populations, the involvement of a significant number of people of working age in the medical, economic, psychological and social problems associated with late dementia, the insufficiency and inconsistency of information about the mechanisms of formation of these disorders actualize a comprehensive medical and social study of dementia.The goal is to study the psychosocial mechanisms of the formation of clinical, functional disorders in dementia, to develop comprehensive medical and psychosocial programs to help patients with dementia and those involved in caring for them, based on the proposals of the psychosocial model of dementia.Methods:A selective observational comparative dynamic study of 315 people with Alzheimer’s dementia and 214 people who care for the patients was carried out. The study used clinical, clinical, psychopathological, neuropsychological, psychometric, sociometric, and statistical research methods.Results:An increase in the severity of dementia contributes to a significant (p <0.05) increase in the number of patients in a dependent position in the family. The appearance of psychotic (painful ideas [r = 0.589]), behavioral (agitation/aggression [r = 0.654]), affective (anxiety [r = 0.536], unstable mood/irritability [r = 0.581]) symptoms of dementia contribute to family role changes structure and increase interpersonal distance in the dyad “caretaker - patient.” Decreased functional activity of the patient (r = 0.758), development of behavioral disorders (aberrant behavior [r = 0.675], agitation/aggression [r = 0.713], impaired night behavior [r = 0.597]), affective symptoms (anxiety [r = 0.685]) contribute to aggravation of the distress of the caregiver. Those who provide unprofessional care for dementia patients in a statistically significant (p <0.05) majority of cases have a high level of emotional involvement in the care process. Changes in family-role and social parameters, a high level of “expressed” emotions of caregivers have an adverse effect on the development of psychotic (r = 0.618), affective (r = 0.701), behavioral (r = 0.837) dementia disorders. The degree of adherence to anti- dementia therapy by the caregiver is one of the important factors determining the amount of care received by the patient (r = 0.698). Agitation/aggression (r = 0.761), anxiety (r = 0.562), sleep disturbances (r = 0.521) contribute to increased compliance. The low satisfaction of the caregiver with premorbid (r = 0.698) and current (r = 0.653) relationships with the patient leads to a decrease in the compliance of the caregiver.Conclusion:It was revealed that the formation of cognitive impairment is caused by biological factors, their severity depends on the severity of dementia. The mechanism of psychopathological symptoms, functional disorders is heterogeneous, depending on the biological causes and psychosocial conditions of functioning of patients.

Do prescription rates of psychotropic drugs change over three years from nursing home admission?

Background In this longitudinal study, we describe how psychotropic drugs (PTDs) are prescribed in nursing home (NH) patients from admission and over a 3-year period, to understand which clinical and environmental factors are associated with PTD prescription. Methods We used data from the Resource Use and Disease Course in Dementia – Nursing Home (REDIC-NH) study, examining physical and mental health, dementia, and PTD prescription during a 3-year period from admission to a NH. Data were collected every six months. At baseline, we included 696 participants from 47 Norwegian NHs. We presented prevalence, incidence, and deprescribing rates of PTD prescriptions for each assessment point. We calculated the odds of receiving PTDs and used a generalized linear mixed model to analyze the variables associated with a change in odds throughout the 3-year period. Results PTD prescriptions were frequent throughout the 3-year period. Antidepressants had the highest prescription rates (28.4%–42.2%). Every PTD category had the highest incidence rate between admission and six months, and antipsychotics had the highest values (49.4%). Deprescribing rates were comparable between assessment points. The odds of antipsychotic prescriptions were lower for older people (OR = 0.96, 95%CI:0.92–0.99, p = 0.023). People with more severe dementia had lower odds of being prescribed sedatives/hypnotics (OR = 0.89, 95%CI:0.85–0.94, p < 0.001). Conclusions PTDs, particularly antidepressants, are widely prescribed over time to NH patients. Older patients are less likely to receive antipsychotics. A higher severity of dementia decreases the odds of being prescribed sedatives/hypnotics. Close attention should be paid to PTD prescriptions during long-term NH stay to avoid prolonged and excessive treatment with these types of drugs. Trial registration ClinicalTrials.gov Identifier: NCT01920100.

Effectiveness of Therapeutic Gardens for People with Dementia: A Systematic Review

This paper is a systematic review of quantitative studies conducted on the benefits of visiting gardens and gardening therapy for people with dementia (PWD) in an effort to assess the effectiveness of such treatments and obtain information on the most appropriate garden design for this population. This review followed the Preferred Reporting Items for Systematic Review and Meta-Analysis Protocols (PRISMA) guidelines. Four databases were searched (PubMed, Web of Science, PsycINFO, Scopus), with no time limits. Out of a total of 480 articles considered, 16 studies were selected for review. In all but two of the studies examined, gardening therapy and the use of therapeutic gardens induced psychophysiological improvements in PWD. The areas showing the greatest effects were Engagement, Agitation, Depression/Mood, Stress, and Medication. It also emerged that interest in this sphere has been growing in the last decade, but there is still a shortage of empirical evidence of the beneficial effects of therapeutic gardens in relation to the type and severity of dementia, and of garden design guidelines. Despite the limited number of studies investigated, the review confirmed the benefits of gardening and therapeutic gardens in PWD. There is nonetheless a need to conduct more quantitative research to support currently-available evidence and generate more information, focusing on garden design criteria, in-garden activities, the type and severity of dementia examined, and effects on caregivers as well as on PWD.