Appendicular Lean Mass, Grip Strength, and the Incidence of Dementia Among Older Adults in the Health ABC Study.

BACKGROUND: Identification of novel risk factors for dementia in older adults could facilitate development of methods to identify patients most at risk and improve their cognitive outcomes. We aimed to determine whether lower appendicular lean mass (ALM), assessed by dual-energy x-ray absorptiometry (DXA), and lower grip strength are associated with a greater likelihood of incident dementia among older adults in the Health Aging and Body Composition Study (Health ABC). METHODS: Health ABC data from 1997 to 2008 were analyzed (n = 2 704). Baseline ALM to body mass index (BMI) ratio (ALMBMI) was assessed by DXA. Baseline grip strength was assessed by hand-held dynamometry. Incident dementia diagnosis was defined as either (i) dementia-related hospitalization plus a Modified Mini-Mental State Examination (3MS) score of ≤ 90; or (ii) record of prescription for anti-dementia medication; or (iii) decline of at least 1.5 SDs on the 3MS score compared to baseline. Cox proportional hazard models estimated associations of ALMBMI and grip strength with incident dementia over follow-up with and without adjusting for covariates, stratified by sex. RESULTS: Among older men, each standard deviation decrement in ALMBMI (adjusted hazard ratio [aHR]: 1.33; 95% confidence interval [CI]: 1.07, 1.65) or grip strength (aHR 1.22; 95% CI: 1.06, 1.41) was associated with increased likelihood of incident dementia. CONCLUSIONS: Lower ALMBMI and grip strength may be important risk factors for the development of dementia among older men. How these factors may belong to a causal pathway of dementia must be elucidated in future work.

Cognitive Impairment is Common in a Veterans Affairs Population with Peripheral Arterial Disease.

BACKGROUND: Despite the shared pathogenesis of peripheral arterial disease (PAD) and vascular dementia, there are little data on cognitive impairment in PAD patients. We hypothesized that cognitive impairment will be common and previously unrecognized. METHODS: Cognitive impairment screening was prospectively performed for veterans presenting to a single Veterans Affairs outpatient vascular surgery clinic from 2020-2021 for PAD consultation or disease surveillance. Overall, 125 Veterans were screened. Cognitive impairment was defined as a score of <26 on the Montreal Cognitive Assessment (MoCA) survey. A multivariable logistic regression assessed for independent risk factors for cognitive impairment. RESULTS: Overall, 77 (61%) had cognitive impairment, 92% was previously unrecognized. Cognitive impairment was associated with increased age (74.4 vs. 71.8 years, P = 0.03), Black versus White race (94% vs. 54%, P < 0.01), hypertension (66% vs. 31%, P = 0.01), prior stroke/TIA (79% vs. 58%, P = 0.03), diabetes treated with insulin (79% vs. 58%, P = 0.05), and post-traumatic stress disorder (PTSD) (80% vs. 57%, P = 0.04). On multivariable analysis, risk factors for newly diagnosed cognitive impairment included age ≥70 years, diabetes treated with insulin, PTSD, and Black race. CONCLUSIONS: Many veterans with PAD have evidence of cognitive impairment and is overwhelmingly underdiagnosed. This study suggests cognitive impairment is an unrecognized issue in a VA population with PAD, requiring more study to determine cognitive impairment's impact on surgical outcomes, and how it can be mitigated and incorporated into clinical care.

Appendicular Lean Mass, Grip Strength, and the Development of Hospital-Associated Activities of Daily Living Disability Among Older Adults in the Health ABC Study.

BACKGROUND: Half of all physical disability, including activity of daily living (ADL) disability, among older adults occurs in the setting of hospitalization. This study examines whether appendicular lean mass (ALM) and grip strength, which are commonly included in various definitions of sarcopenia, are associated with the development of hospital-associated ADL disability in older adults in the Health ABC Study. METHODS: Individuals hospitalized during the first 5 years of follow-up (n = 1 724) were analyzed. ALM to body mass index (BMI) ratio (ALMBMI), by dual-energy x-ray absorptiometry (DXA), and grip strength, by hand-held dynamometery, were assessed annually. Development of new ADL disability was assessed at the time of the next annual assessment after hospitalization. Separate regression analyses modeled the association of prehospitalization ALMBMI or grip strength with death before the next scheduled annual assessment. Next, among those who survived to the next annual assessment, separate regression analyses modeled the association of ALMBMI or grip strength with development of ADL disability. RESULTS: Each standard deviation decrement in prehospitalization grip strength was associated with an adjusted 1.80 odds of new ADL disability at follow-up (95% CI: 1.18, 2.74). Low, compared with not low, grip strength (per FNIH definition) was associated with an adjusted 2.36 odds of ADL disability at follow-up (95% CI: 1.12, 4.97). ALM measures were not associated with the development of hospital-associated ADL disability. ALM and grip strength measures were not associated with death. CONCLUSIONS: Prehospitalization lower grip strength may be an important risk factor for ADL disability among older adult survivors of hospitalization.

An Interprofessional Process for the Limitation of Life-Sustaining Treatments at the End of Life in France.

CONTEXT: The provision of potentially non-beneficial life-sustaining treatments (LSTs) remains a challenging problem. In 2005, legislation in France established an interprofessional process by which non-beneficial LSTs could be withheld or withdrawn, permitting exploration of the effects of such a legally-protected process and its implementation. OBJECTIVES: To characterize intensive care unit (ICU) interprofessional team decision-making and consensus-building practices regarding withholding and withdrawing of LSTs in two Parisian hospitals and to explore physician and nurse perceptions of and experiences with these practices. METHODS: This was an exploratory qualitative study utilizing thematic analysis of semi-structured, in-depth interviews of physicians and nurses purposively sampled based on level of training and experience from two hospitals in Paris, France. RESULTS: A total of 25 participants were interviewed. Participants reported that the two Parisian hospitals in this study have each created an interprofessional process for withholding or withdrawing non-beneficial LSTs, providing insight into how norms of decision-making respond to systems-level legal changes. Participants reported that these processes tended to be consistent across several domains: maintaining unified messaging with patients, empowering nurses to participate in end-of-life decision-making, reducing moral distress provoked by end-of-life decisions, and shaping the ethical milieu within which end-of-life decision-making takes place. CONCLUSIONS: The architecture of the interprofessional process created at two Parisian hospitals and its perceived benefits may be useful to clinicians and policy-makers attempting to establish processes, policies, or legislation directed at withholding or withdrawing potentially non-beneficial LSTs in the United States and elsewhere.

Do Caregiving Factors Affect Hospitalization Risk Among Disabled Older Adults?

BACKGROUND/OBJECTIVES: Hospitalization is common among older adults with disability, many of whom receive help from a caregiver and have dementia. Our objective was to evaluate the association between caregiver factors and risk of hospitalization and whether associations differ by dementia status. DESIGN: Longitudinal observational study. SETTING: The 1999 and 2004 National Long-Term Care Survey and the 2011 and 2015 National Health and Aging Trends Study, linked caregiver surveys, and Medicare claims. PARTICIPANTS: A total of 2,589 community-living Medicare fee-for-service beneficiaries, aged 65 years or older (mean age = 79 years; 63% women; 31% with dementia), with self-care or mobility disability and their primary family or unpaid caregiver. MEASUREMENTS: Self-reported characteristics of older adults and their caregivers were assessed from older adult and caregiver survey interviews. Older adult hospitalization over the subsequent 12 months was identified in Medicare claims. Multivariable Cox proportional hazards models adjusted for older adult characteristics and were stratified by dementia status. RESULTS: In this nationally representative cohort, 38% of older adults with disabilities were hospitalized over 12 months following interview. Increased hospitalization risk was associated with having a primary caregiver who helped with healthcare tasks (adjusted hazard ratio (aHR) = 1.22; 95% confidence interval (CI) = 1.05-1.40), reported physical strain (aHR = 1.21; 95% CI = 1.04-1.42), and provided more than 40 hours of care weekly (aHR = 1.26; 95% CI = 1.04-1.54 vs ≤20 hours). Having a caregiver who had helped for 4 years or longer (vs <1 year) was associated with 38% lower risk of hospitalization (aHR = 0.62; 95% CI = 0.49-0.79). Older adults with and without dementia had similar rates of hospitalization (39.5% vs 37.3%; P = .4), and caregiving factors were similarly associated with hospitalization regardless of older adults' dementia status. CONCLUSION: Select caregiving characteristics are associated with hospitalization risk among older adults with disability. Hospitalization risk reduction strategies may benefit from understanding and addressing caregiving circumstances.

Difficulty and help with activities of daily living among older adults living alone with cognitive impairment.

INTRODUCTION: There is limited research on difficulties with activities of daily living (I/ADLs) among older adults living alone with cognitive impairment, including differences by race/ethnicity. METHODS: For U.S. Health and Retirement Study (2000-2014) participants aged 55+ living alone with cognitive impairment (4,666 individuals; 9,091 observations), we evaluated I/ADL difficulty and help. RESULTS: Among 4.3 million adults aged 55+ living alone with cognitive impairment, an estimated 46% reported an I/ADL difficulty; 72% reported not receiving help with an I/ADL. Women reported more difficulty than men. Compared to white women, black women were 22% more likely to report a difficulty without help, and Latina women were 36% more likely to report a difficulty with help. Among men, racial/ethnic differences in outcomes were not significant. Patterns of difficulty without help by race/ethnicity were similar among Medicaid beneficiaries. DISCUSSION: Findings call for targeted efforts to support older adults living alone with cognitive impairment.

A Practical Approach to Assessing and Mitigating Loneliness and Isolation in Older Adults.

Loneliness and social isolation are strongly associated with several adverse health outcomes in older persons including death and functional impairments. The strength of these associations has been compared with smoking. Accordingly, loneliness and isolation have significant public health implications. Despite the adverse impacts of loneliness and social isolation on quality of life, and their strong association with health outcomes, the evaluation of loneliness and isolation have not been integrated into medical care. The risks for loneliness may be of particular concern to persons with serious illness as patients and caregivers cope with the experience of loss, loss of independence, and increasing care needs. To date, there has been no uniform way of evaluating and documenting loneliness and social isolation as a part of a review of a patient's social determinants of health. This article provides a framework for healthcare systems, providers, and community members working with older adults to (1) understand loneliness, isolation, and its counterpart social connection; (2) describe the different ways loneliness affects health; and (3) create a framework for asking about and documenting these experiences. Finally, because the lack of studies assessing whether targeting loneliness can improve health outcomes is a major gap, we provide guidance on the future of interventions. J Am Geriatr Soc 67:657-662, 2019.

Frailty phenotypes and mortality after lung transplantation: A prospective cohort study.

Frailty is associated with increased mortality among lung transplant candidates. We sought to determine the association between frailty, as measured by the Short Physical Performance Battery (SPPB), and mortality after lung transplantation. In a multicenter prospective cohort study of adults who underwent lung transplantation, preoperative frailty was assessed with the SPPB (n = 318) and, in a secondary analysis, the Fried Frailty Phenotype (FFP; n = 299). We tested the association between preoperative frailty and mortality following lung transplantation with propensity score-adjusted Cox models. We calculated postestimation marginalized standardized risks for 1-year mortality by frailty status using multivariate logistic regression. SPPB frailty was associated with an increased risk of both 1- and 4-year mortality (adjusted hazard ratio [aHR]: 7.5; 95% confidence interval [CI]: 1.6-36.0 and aHR 3.8; 95%CI: 1.8-8.0, respectively). Each 1-point worsening in SPPB was associated with a 20% increased risk of death (aHR: 1.20; 95%CI: 1.08-1.33). Frail subjects had an absolute increased risk of death within the first year after transplantation of 12.2% (95%CI: 3.1%-21%). In secondary analyses, FFP frailty was associated with increased risk of death within the first postoperative year (aHR: 3.8; 95%CI: 1.1-13.2) but not over longer follow-up. Preoperative frailty is associated with an increased risk of death after lung transplantation.

Long-term cumulative depressive symptom burden and risk of cognitive decline and dementia among very old women.

BACKGROUND: Depressive symptoms and cognitive outcomes are strongly interrelated. Despite that rates of depressive symptoms fluctuate during late life, little is known about the impact of long-term cumulative depressive symptom burden on cognitive decline and dementia in older adults. This study examines the association of nearly 20 years of cumulative depressive symptoms with cognitive outcomes in a cohort of older women. METHODS: We assessed depressive symptoms in 7,240 women using the Geriatric Depression scale (GDS) at serial visits. We used a Poisson model with random slopes to estimate GDS trajectories for each participant from baseline to death or end of follow-up, and then characterized depressive symptom burden by quartile of the area under the curve. We assessed cognitive outcomes using repeated measures of the Mini-Mental State Examination (MMSE) and Trails B score over 20 years, Year-20 neuropsychological test battery, and adjudicated dementia and mild cognitive impairment (MCI). RESULTS: Adjusting for potential confounders, compared with women in the lowest quartile of cumulative depressive symptoms burden, women in the highest quartile had 21% more MMSE errors over time (95% CI = 17%, 26%), 20% worse Trails B score over time (95% CI = 17%, 23%), worse scores on most of the Year-20 cognitive tests, and a twofold greater likelihood of developing dementia or MCI (95% CI = 1.48, 3.11). CONCLUSIONS: Long-term cumulative depressive symptom burden was associated with cognitive decline and risk of dementia or MCI. Older adults with a history of depression should be closely monitored for recurrent episodes or unresolved depressive symptoms as well as any cognitive deficits.

Prevalence and risk factors for depressive symptoms in persons with chronic obstructive pulmonary disease.

BACKGROUND: Although depression is a risk factor for adverse outcomes in chronic illness, little is known about the prevalence or risk factors for depressive symptoms in chronic obstructive pulmonary disease (COPD). OBJECTIVE: To determine the prevalence of depressive symptoms in COPD as compared to other chronic illnesses and to identify risk factors for depressive symptoms in COPD. DESIGN AND PATIENTS: Cross-sectional study of 18,588 persons (1,736 subjects with self-reported COPD), representing a sample of the US population aged > or =50 years who participated in the 2004 Health and Retirement Survey. MEASUREMENTS: Presence of COPD and other chronic conditions was defined by self-report. Presence of depressive symptoms was assessed using the CES-D8 scale. Participants with a score > or =3 on CES-D8 were classified as having clinically significant depressive symptoms. MAIN RESULTS: Of 1,736 participants with COPD, 40% had > or =3 depressive symptoms. Depressive symptoms were more common in COPD than in coronary heart disease, stroke, diabetes, arthritis, hypertension, and cancer. Risk factors for > or =3 depressive symptoms in COPD: younger age (OR 1.02/per year younger, 95% CI [1.02-1.03]), female gender (1.2 [1.1-1.3]), current smoking (1.5 [1.3-1.7]), marital status [divorced/separated (1.8 [1.6-2.1]), widowed (1.8 [1.6-2]), never married (1.4 [1.1-1.8]), < or =high school degree (1.6 [1.5-1.8]), dyspnea (2.3 [2.1-2.6]), difficulty walking (2.8 [2.5-3.2]), and co-morbid diabetes (1.2 [1.1-1.4]), arthritis (1.3 [1.2-1.5]) or cancer (1.2 [1.1-1.4]). CONCLUSIONS: Depressive symptoms are common in COPD and are more likely to occur in COPD than in other common chronic illnesses. The risk factors identified may be used for targeted depression screening in COPD patients.