Hippocampal subfield viscoelasticity in amnestic mild cognitive impairment evaluated with MR elastography.

Hippocampal subfields (HCsf) are brain regions important for memory function that are vulnerable to decline with amnestic mild cognitive impairment (aMCI), which is often a preclinical stage of Alzheimer's disease. Studies in aMCI patients often assess HCsf tissue integrity using measures of volume, which has little specificity to microstructure and pathology. We use magnetic resonance elastography (MRE) to examine the viscoelastic mechanical properties of HCsf tissue, which is related to structural integrity, and sensitively detect differences in older adults with aMCI compared to an age-matched control group. Group comparisons revealed HCsf viscoelasticity is differentially affected in aMCI, with CA1-CA2 and DG-CA3 exhibiting lower stiffness and CA1-CA2 exhibiting higher damping ratio, both indicating poorer tissue integrity in aMCI. Including HCsf stiffness in a logistic regression improves classification of aMCI beyond measures of volume alone. Additionally, lower DG-CA3 stiffness predicted aMCI status regardless of DG-CA3 volume. These findings showcase the benefit of using MRE in detecting subtle pathological tissue changes in individuals with aMCI via the HCsf particularly affected in the disease.

An Innovative Non-Pharmacologic Treatment for Delusional Misidentification in Persons with Major Neurocognitive Disorder.

Misidentification delusions are false, fixed beliefs that assign an incorrect identity to a previously familiar or unfamiliar person or place. Such delusions are common in several neuropsychiatric disorders and place a particular burden on individuals with Major Neurocognitive Disorder and their caregivers. No standard pharmacologic or non-pharmacologic treatment approaches have been shown to be consistently effective in addressing this problem. We describe two caregiver-care recipient dyads in which an innovative non-pharmacologic, digital intervention reduced delusional misidentification, improved care recipient behavior, and decreased caregiver burden.

Late Life Depression: The Essentials and the Essential Distinctions.

Late life depression (LLD), a familiar syndrome, is not differentiated in the DSM-5. LLD can resemble depressive syndromes in younger adults but it differs in demographic characteristics, phenomenology, prognosis, treatment, suicide risk, relationship to other disorders, and etiology. Older depressed adults often present with fewer major depressive symptoms, less emphasis on mood disturbance, greater preoccupation with somatic or psychotic symptoms, and misleading cognitive deficits. LLD's relationships with medical and neurocognitive symptoms and with inflammatory and immune factors are complex. Formal screening tools and biopsychosocial assessment informs diagnosis and treatment. Evidence supports the effectiveness of lifestyle interventions, several psychotherapies, and a variety of somatic treatment approaches. Comorbid medical disorders must be taken into account when planning treatment. In this article, the authors describe the characteristics of LLD, present an approach to assessment and management, and recommend that future DSM editions include a new specifier to differentiate LLD from other depressive syndromes.

Effect of Aging on the Viscoelastic Properties of Hippocampal Subfields Assessed with High-Resolution MR Elastography.

Age-related memory impairments have been linked to differences in structural brain parameters, including the integrity of the hippocampus (HC) and its distinct hippocampal subfields (HCsf). Imaging methods sensitive to the underlying tissue microstructure are valuable in characterizing age-related HCsf structural changes that may relate to cognitive function. Magnetic resonance elastography (MRE) is a noninvasive MRI technique that can quantify tissue viscoelasticity and may provide additional information about aging effects on HCsf health. Here, we report a high-resolution MRE protocol to quantify HCsf viscoelasticity through shear stiffness, µ, and damping ratio, ξ, which reflect the integrity of tissue composition and organization. HCsf exhibit distinct mechanical properties-the subiculum had the lowest µ and both subiculum and entorhinal cortex had the lowest ξ. Both measures correlated with age: HCsf µ was lower with age (P < 0.001) whereas ξ was higher (P = 0.002). The magnitude of age-related differences in ξ varied across HCsf (P = 0.011), suggesting differential patterns of brain aging. This study demonstrates the feasibility of using MRE to assess HCsf microstructural integrity and suggests incorporation of these metrics to evaluate HC health in neurocognitive disorders.

Cause for Concern: Behavioral and Psychological Symptoms of Dementia in Delaware's Long-Term Care Facilities.

Introduction: Much of the suffering and expense associated with treatment of persons with dementia (Major Neurocognitive Disorder) arises from associated noncognitive behavioral and psychological symptoms of dementia (BPSD). Although a consensus on the prevalence of BPSD is lacking, evidence suggests that most people with dementia will manifest one or more of these symptoms during the disorder's progression. BPSD raise the cost of care by leading to more frequent emergency room visits, more and longer hospitalizations, and earlier admission to long-term care facilities (LTCF). Treatment of BPSD presents a stressful challenge in LTCFs. We sought to investigate the care burden of BPSD in Delaware's LTCFs and to gather data that can inform management approaches. Methods: Using REDCap, we created an anonymous cross-sectional survey designed for completion by LTCF administrators. The Delaware Health Care Facilities Association (DHCFA) and Delaware's Division of Services for Aging and Adults with Physical Disabilities (DSAAPD) encouraged participation. A link to the survey was emailed to the administrators of 81 facilities in Delaware. The resulting data were evaluated using descriptive statistics. Results: Forty-four of the 81 facilities surveyed opened the survey link. Thirty-eight facilities answered at least some of the questions, and 19 surveys were fully completed. The reported average prevalence of BPSD among Delaware LTCF residents with dementia was 49.3% (SD 28.9). The five most frequently reported BPSD symptoms were anxiety, agitation, wandering, dysphoria/depression, and appetite/eating abnormalities. All facilities reported employing a spectrum of pharmacologic and non-pharmacologic management strategies. Twenty-two of 24 respondents (91.7%) reported that behavioral health consultation was available at their facilities and 18 of 20 respondents (90.0%) indicated that they provided training on how to manage residents with BPSD. Conclusion: BPSD are a pervasive concern among Delaware's LTCFs. LTCFs may benefit from the development of training programs and dissemination of treatment guidelines incorporating evidence-based interventions and their implementation in managing BPSD to improve care, decrease stress on residents and caregivers, and reduce some avoidable health care costs.

The "Counseling+" Roles of the Speech-Language Pathologist Serving Older Adults With Mild Cognitive Impairment and Dementia From Alzheimer's Disease.

Purpose: Persons with dementia and mild cognitive impairment (MCI) are major consumers of services provided by speech-language pathologists (SLPs). These services include not only direct assessment and treatment of communication and swallowing but also counseling, collaboration, prevention, and wellness. These "counseling+" activities can be especially challenging for SLPs to deliver because of the lack of evidence, as well as the complex nature of Alzheimer's disease (AD) and other conditions that cause MCI and dementia. Method: This tutorial is written by a speech-language pathologist, a neuropsychologist, and a geriatric psychiatrist to provide education, resources, and recommendations for SLPs delivering counseling+ activities to patients with MCI and dementia from AD and related disorders. Results and Conclusions: We describe counseling+ activities across the continuum of care ranging from educating and conducting cognitive screenings with adults experiencing age-related cognitive decline to supporting end-of-life wishes. Because of their expertise in communication, SLPs can provide an array of important leading and supporting services to patients, their family, and other health care professionals on the care team, such as providing patients with appropriate feedback following a cognitive screening and helping caregivers identify the communicative intent of a responsive behavior. The demand for SLP services for patients with MCI and dementia will grow significantly over the next few decades, necessitating more systematic research and clinical evidence in this area.

Medicolegal Implications of Mild Neurocognitive Disorder.

INTRODUCTION: The syndromes of mild cognitive impairment (MCI) or mild neurocognitive disorder (MiND), often prodromal to dementia (Major Neurocognitive Disorder), are characterized by acquired clinically significant changes in one or more cognitive domains despite preserved independence. Mild impairment has significant medicolegal consequences for an affected person and their care system. We review the more common etiologies of MiND and provide a systematic review of its medicolegal implications. METHODS: We conducted a systematic review of the peer-reviewed English literature on medicolegal aspects of MCI or MiND using comprehensive search terms and expanding our review to include sources cited by these reports. RESULTS: Impairment of memory, executive function, social cognition, judgment, insight or abstraction can alter an individual's abilities in a variety of areas that include decision making, informed consent, designation of a surrogate decision-maker such as a health care proxy, understanding and management of financial affairs, execution of a will, or safe driving. CONCLUSION: Even mild cognitive impairment can have significant behavioral consequences. Clinicians can assist care partners and persons with MCI or MiND by alerting them to the medicolegal concerns that often accompany cognitive decline. Early recognition and discussion can help a care system manage medicolegal risk more effectively and promote thoughtful advance planning.

Machine Learning Enhances the Efficiency of Cognitive Screenings for Primary Care.

BACKGROUND: Incorporation of cognitive screening into the busy primary care will require the development of highly efficient screening tools. We report the convergence validity of a very brief, self-administered, computerized assessment protocol against one of the most extensively used, clinician-administered instruments-the Montreal Cognitive Assessment (MoCA). METHOD: Two hundred six participants (mean age = 67.44, standard deviation [SD] = 11.63) completed the MoCA and the computerized test. Three machine learning algorithms (ie, Support Vector Machine, Random Forest, and Gradient Boosting Trees) were trained to classify participants according to the clinical cutoff score of the MoCA (ie, < 26) from participant performance on 25 features of the computerized test. Analysis employed Synthetic Minority Oversampling TEchnic to correct the sample for class imbalance. RESULTS: Gradient Boosting Trees achieved the highest performance (accuracy = 0.81, specificity = 0.88, sensitivity = 0.74, F1 score = 0.79, and area under the curve = 0.81). A subsequent K-means clustering of the prediction features yielded 3 categories that corresponded to the unimpaired (mean = 26.98, SD = 2.35), mildly impaired (mean = 23.58, SD = 3.19), and moderately impaired (mean = 17.24, SD = 4.23) ranges of MoCA score ( F = 222.36, P < .00). In addition, compared to the MoCA, the computerized test correlated more strongly with age in unimpaired participants (ie, MoCA ≥26, n = 165), suggesting greater sensitivity to age-related changes in cognitive functioning. CONCLUSION: Future studies should examine ways to improve the sensitivity of the computerized test by expanding the cognitive domains it measures without compromising its efficiency.

A Delphi study of late-onset personality disorders.

OBJECTIVES: The DSM-5 describes personality disorders (PDs) as emerging in early life and remaining continuous throughout the life-span. Yet case studies and expert opinion support the existence of late-onset PDs. Little is known about PDs in late life, and our instruments for assessing them are not well validated. Thus, the focus of this exploratory Delphi study was the late-onset PD, with special attention to the accuracy of the core criteria for the diagnosis. DESIGN: A Delphi study was designed to assess the presentation of PDs in late life. The Delphi consisted of three successive rounds of inquiry. Between rounds, the participants were provided with a summary of the panel's responses. PARTICIPANTS: A panel of 21 experts included published authors, researchers, and teachers from the USA, the UK, Australia, France, Belgium, and the Netherlands. MEASUREMENTS: Researchers designed a survey that included an introduction, a demographic questionnaire, and five questions that varied in presentation and response format. RESULTS: Experts reached consensus that a variant of PD appears de novo in old age. The core features of inflexibility and pervasiveness may not pertain to late-onset PD. There was agreement that frequently occurring life events contribute selectively to the expression of late-onset PD, with the major ones being death of a spouse or partner and transition to a nursing or assisted-living facility. CONCLUSIONS: Nearly all participants took the position that PD can present for the first time in old age and be clinically identifiable without having been so identified earlier in life.

Health Care Needs of Homeless Older Adults:: Examining the Needs of a Senior Center Cohort.

OBJECTIVES: To assess the medical status and health care needs of Wilmington's largest accessible group of homeless elders located at St. Patrick's Center in order to identify areas for improvement of medical screening, preventive health care delivery, and disease management. METHODS: A cross sectional study was conducted between December 2016 and August 2018 at St. Patrick's center in Wilmington, DE. Utilizing a structured health needs assessment, 64 unique individuals aged 50 years and older were interviewed. Descriptive statistics were used to compare data from homeless older adults with data from non-homeless older adults. RESULTS: Of the 64 total subjects, 17 self-reported as homeless at the time of interviewing. High rates of depressive and cognitive impairment symptoms were self-reported in both homeless and non-homeless participants. When compared to the non-homeless group at St. Patrick's Center, the homeless cohort was less likely to have received a non-acute assessment (such as a routine physical exam/well check-up) or a routine dental cleaning/x-ray within the past year. Tobacco and alcohol use and were frequently self-reported by homeless and non-homeless respondents and were more frequent in the homeless group. The homeless individuals were more likely to have engaged in illicit drug use. Overall, more than 90% of the subjects had some form of health insurance coverage. The most frequently cited reasons for lack of healthcare were inability to afford co-payments/deductibles and lack of transportation. CONCLUSIONS: To address the health care needs of this population, new programs to improve care should focus on facilitating access to services which address areas of deficiency. This group of older adults has benefited from a range of available services that reflect the work of a staff aware of their medical needs, as indicated by the high rate of insured individuals. Licit and illicit substance use assessment and treatment and dental screening remain areas of need for the homeless older adults interviewed in this study. The high rates of depression and cognitive impairment in both the homeless and non-homeless older adult groups suggest the need for further services in these areas as well. Access to care may be improved by addressing concerns regarding co-payments, deductibles, and transportation to care.

Cognitively Impaired Physicians: How Do We Detect Them? How Do We Assist Them?

Our older physicians, an increasing number of those in practice, constitute a valuable human resource in the medical profession. Professional satisfaction, increasing life expectancy, concerns regarding financial security, and reluctance to retire are among the many reasons a physician might choose to extend practice into later adulthood. Despite the benefits of experience and expertise acquired by older physicians, cognitive changes associated with normal or pathological aging have been shown to have a significant negative effect on physician performance. Age-based cognitive assessment of physicians has been adopted in some countries and by some U.S. healthcare institutions for patient protection and improvement of physician quality of life, but there is no general guideline for the assessment and assistance of cognitively impaired late career physicians in the United States. Self-reports and reports from peers are an inadequate safeguard, leaving impaired physicians and their patients at risk. In this discussion, we will describe cognitive aging, the effects of cognitive aging on physician performance, some current monitoring systems, and recommendations for identifying and assisting physicians found to be impaired.

A cross-validation Delphi method approach to the diagnosis and treatment of personality disorders in older adults.

INTRODUCTION: The Delphi method is a consensus-building technique using expert opinion to formulate a shared framework for understanding a topic with limited empirical support. This cross-validation study replicates one completed in the Netherlands and Belgium, and explores US experts' views on the diagnosis and treatment of older adults with personality disorders (PD). METHODS: Twenty-one geriatric PD experts participated in a Delphi survey addressing diagnosis and treatment of older adults with PD. The European survey was translated and administered electronically. RESULTS: First-round consensus was reached for 16 out of 18 items relevant to diagnosis and specific mental health programs for personality disorders in older adults. Experts agreed on the usefulness of establishing criteria for specific types of treatments. The majority of psychologists did not initially agree on the usefulness of pharmacotherapy. Expert consensus was reached following two subsequent rounds after clarification addressing medication use. CONCLUSIONS: Study results suggest consensus among regarding psychosocial treatments. Limited acceptance amongst US psychologists about the suitability of pharmacotherapy for late-life PDs contrasted with the views expressed by experts surveyed in Netherlands and Belgium studies.