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https://www.readbyqxmd.com/read/29334498/evidence-based-interpretation-of-amyloid-%C3%AE-pet-results-a-clinician-s-tool
#1
David Bergeron, Rik Ossenkoppele, Robert Jr Laforce
BACKGROUND: Amyloid-β positron emission tomography (PET) allows for in vivo detection of fibrillar amyloid plaques, a pathologic hallmark of Alzheimer's disease (AD). However, amyloid-β PET interpretation is limited by the imperfect correlation between PET and autopsy, and the fact that it is positive in about 20% to 30% of cognitively normal individuals and non-AD dementias, especially when older or carrying the ε4 allele of apolipoprotein E (ApoE4). When facing a positive amyloid PET, clinicians have to evaluate the probability of a pathologic false positive as well as the probability of amyloid positivity being age-related, comorbid to a primary non-AD dementia (clinicopathologic false positive)...
January 12, 2018: Alzheimer Disease and Associated Disorders
https://www.readbyqxmd.com/read/29329363/validity-of-teleneuropsychological-assessment-in-older-patients-with-cognitive-disorders
#2
Hannah E Wadsworth, Kaltra Dhima, Kyle B Womack, John Hart, Myron F Weiner, Linda S Hynan, C Munro Cullum
Objective: The feasibility and reliability of neuropsychological assessment at a distance have been demonstrated, but the validity of this testing medium has not been adequately demonstrated. The purpose of this study was to determine the ability of video teleconferencing administration of neuropsychological measures (teleneuropsychology) in discriminating cognitively impaired from non-impaired groups of older adults. It was predicted that measures administered via video teleconference would distinguish groups and that the magnitude of differences between impaired and non-impaired groups would be similar to group differences achieved in traditional administration...
January 10, 2018: Archives of Clinical Neuropsychology: the Official Journal of the National Academy of Neuropsychologists
https://www.readbyqxmd.com/read/29328963/the-effect-of-white-matter-hyperintensities-on-cognition-is-mediated-by-cortical-atrophy
#3
Batool Rizvi, Atul Narkhede, Briana S Last, Mariana Budge, Giuseppe Tosto, Jennifer J Manly, Nicole Schupf, Richard Mayeux, Adam M Brickman
White matter hyperintensities (WMH) have been linked to cognitive dysfunction and dementia, although the reasons are unclear. One possibility is that WMH promote neurodegeneration, which, in turn, affects cognition. We examined whether cortical thickness, a marker of neurodegeneration, mediates the relationship between WMH and cognition among 519 older adults. Using conditional process analysis modeling techniques, we examined the association between WMH volume and global cognition and tested whether cortical thickness mediates this relationship statistically...
December 16, 2017: Neurobiology of Aging
https://www.readbyqxmd.com/read/29325531/costs-of-potentially-inappropriate-medication-use-in-residential-aged-care-facilities
#4
S L Harrison, L Kouladjian O'Donnell, R Milte, S M Dyer, E S Gnanamanickam, C Bradley, E Liu, S N Hilmer, M Crotty
BACKGROUND: The potential harms of some medications may outweigh their potential benefits (inappropriate medication use). Despite recommendations to avoid the use of potentially inappropriate medications (PIMs) in older adults, the prevalence of PIM use is high in different settings including residential aged care. However, it remains unclear what the costs of these medications are in this setting. The main objective of this study was to determine the costs of PIMs in older adults living in residential care...
January 11, 2018: BMC Geriatrics
https://www.readbyqxmd.com/read/29325105/predictors-of-secondary-role-strains-among-spousal-caregivers-of-older-adults-with-functional-disability
#5
Courtney A Polenick, Nicole DePasquale
Background and Objectives: Aging spouses commonly care for a partner with functional disability, but little is known about how spousal caregiving may impact different life domains. This study evaluated how caregiving characteristics are associated with secondary role strains among spousal caregivers. Research Design and Methods: This cross-sectional study examined 367 spousal caregivers and their partners from the 2011 National Health and Aging Trends Study and National Study of Caregiving...
January 8, 2018: Gerontologist
https://www.readbyqxmd.com/read/29323557/neuropsychological-assessment-of-412-hiv-infected-individuals-in-s%C3%A3-o-paulo-brazil
#6
Maria Rita Polo Gascón, José Ernesto Vidal, Yolanda Marques Mazzaro, Jerusa Smid, Rosa Maria Nascimento Marcusso, Claudio Garcia Capitão, Elizeu Macedo Coutinho, Glaucia Rosana Guerra Benute, Mara Cristina Souza De Lucia, Augusto César Penalva de Oliveira
HIV-associated neurocognitive disorders (HAND) remain frequent even among individuals receiving combined antiretroviral therapy (cART). In addition, HAND may adversely affect the quality of life and adherence to cART. There is scarce epidemiological information about HAND in Latin America. This cross-sectional study recruited HIV-infected patients from a tertiary teaching institution in São Paulo, Brazil, between May 2013 and February 2015. The patients were adults with at least 4 years of education and patients with current neurological or psychiatric diseases were excluded...
January 2018: AIDS Patient Care and STDs
https://www.readbyqxmd.com/read/29322470/associations-between-the-drug-burden-index-potentially-inappropriate-medications-and-quality-of-life-in-residential-aged-care
#7
Stephanie L Harrison, Lisa Kouladjian O'Donnell, Clare E Bradley, Rachel Milte, Suzanne M Dyer, Emmanuel S Gnanamanickam, Enwu Liu, Sarah N Hilmer, Maria Crotty
BACKGROUND: Inappropriate polypharmacy may negatively impact the quality of life of residents in aged care facilities, but it remains unclear which medications may influence this reduced quality of life. OBJECTIVE: The objective of this study was to examine whether the Drug Burden Index and potentially inappropriate medications were associated with quality of life in older adults living in residential care with a high prevalence of cognitive impairment and dementia...
January 11, 2018: Drugs & Aging
https://www.readbyqxmd.com/read/29319337/reliable-change-and-minimum-clinically-important-difference-mcid-of-the-repeatable-battery-for-the-assessment-of-neuropsychology-status-rbans-in-a-heterogeneous-dementia-sample-support-for-reliable-change-methods-but-not-the-mcid
#8
Megan E O'Connell, Benjamin Gould, Jake Ursenbach, Joe Enright, Debra G Morgan
We compare reliable change scores and recently published anchor-based cutoffs for minimum clinically important difference (MCID) for the Repeatable Battery for the Assessment of Neuropsychological Status (RBANS) in a sample of patients diagnosed with various forms of dementia. For memory clinic patients with dementia evaluated twice over a one-year interval (N = 53), observed retest RBANS index scores were compared with predicted retest index scores based on regression formulae developed from cognitively healthy older adults...
January 10, 2018: Applied Neuropsychology. Adult
https://www.readbyqxmd.com/read/29318705/relevance-of-frailty-to-mortality-associated-with-the-use-of-antipsychotics-among-community-residing-older-adults-with-impaired-cognition
#9
Colleen J Maxwell, Michael A Campitelli, David B Hogan, Christina Diong, Peter C Austin, Joseph E Amuah, Kate Lapane, Dallas P Seitz, Sudeep S Gill, Andrea Gruneir, Walter P Wodchis, Susan E Bronskill
PURPOSE: To examine the association between new antipsychotic use and mortality over 6 months among community-based older adults with cognitive impairment, and variation in risk by frailty and sex. METHODS: We conducted a retrospective cohort study of older (aged 66+) home care clients in Ontario, Canada, using linked administrative health and clinical databases. Included were clients with dementia and/or significant cognitive impairment assessed during April 2008 to March 2013...
January 10, 2018: Pharmacoepidemiology and Drug Safety
https://www.readbyqxmd.com/read/29313802/augmenting-cognitive-training-in-older-adults-the-act-study-design-and-methods-of-a-phase-iii-tdcs-and-cognitive-training-trial
#10
Adam J Woods, Ronald Cohen, Michael Marsiske, Gene E Alexander, Sara J Czaja, Samuel Wu
BACKGROUND: Adults over age 65 represent the fastest growing population in the US. Decline in cognitive abilities is a hallmark of advanced age and is associated with loss of independence and dementia risk. There is a pressing need to develop effective interventions for slowing or reversing the cognitive aging process. While certain forms of cognitive training have shown promise in this area, effects only sometimes transfer to neuropsychological tests within or outside the trained domain...
December 4, 2017: Contemporary Clinical Trials
https://www.readbyqxmd.com/read/29304204/death-depression-disability-and-dementia-associated-with-self-reported-hearing-problems-a-25-year-study
#11
Hélène Amieva, Camille Ouvrard, Céline Meillon, Laetitia Rullier, Jean-François Dartigues
Background: Hearing loss in older adults is suspected to play a role in social isolation, depression, disability, lower quality of life and risk of dementia. Such suspected associations still need to be consolidated with additional research. With a particularly long follow-up, this study assessed the relationship between hearing status and four major adverse health events: death, dementia, depression, and disability. Methods: Prospective community-based study of 3777 subjects aged ≥ 65 followed-up for 25 years...
January 3, 2018: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
https://www.readbyqxmd.com/read/29290048/screening-and-detection-of-delirium-in-older-ed-patients-performance-of-the-modified-confusion-assessment-method-for-the-emergency-department-mcam-ed-a-two-step-tool
#12
Wolfgang Hasemann, Florian F Grossmann, Rahel Stadler, Roland Bingisser, Dieter Breil, Martina Hafner, Reto W Kressig, Christian H Nickel
Delirium is frequent in older Emergency Department (ED) patients, but detection rates for delirium in the ED are low. To aid in identifying delirium, we developed and implemented a two-step systematic delirium screening and assessment tool in our ED: the modified Confusion Assessment Method for the Emergency Department (mCAM-ED). Components of the mCAM-ED include: (1) screening for inattention, the main feature of delirium, which was performed with the Months Backwards Test (MBT); (2) delirium assessment based on a structured interview with questions from the Mental Status Questionnaire by Kahn et al...
December 30, 2017: Internal and Emergency Medicine
https://www.readbyqxmd.com/read/29261535/limbic-and-basal-ganglia-neuroanatomical-correlates-of-gait-and-executive-function-older-adults-with-mild-cognitive-impairment-and-intact-cognition
#13
Ellen L McGough, Valerie E Kelly, Kurt E Weaver, Rebecca G Logsdon, Susan M McCurry, Kenneth C Pike, Thomas J Grabowski, Linda Teri
OBJECTIVE: This study aimed to examine differences in spatiotemporal gait parameters between older adults with amnestic mild cognitive impairment (aMCI) and normal cognition (NC), and to examine limbic and basal ganglia neural correlates of gait and executive function in older adults without dementia. DESIGN: This was a cross sectional study of 46 community dwelling older adults, ages 70-95 with aMCI (n=23) and NC (n=23). Structural magnetic resonance imaging (MRI) was used to attain volumetric measures of limbic and basal ganglia structures...
December 19, 2017: American Journal of Physical Medicine & Rehabilitation
https://www.readbyqxmd.com/read/29261088/cognitive-and-gait-decrements-among-non-demented-older-adults-with-type-2-diabetes-or-hypertension-a-systematic-review
#14
Madison A Niermeyer
OBJECTIVE: Older adults with Type 2 diabetes (DM2) and hypertension (HTN) often experience cognitive weaknesses. Growing evidence suggests that such weaknesses place patients at risk for gait disturbance and falls. The current systematic review evaluated (a) the impact of DM2 and HTN on cognition and gait and (b) the association between cognition and gait in the context of DM2 and HTN. METHODS: PubMed was searched to identify studies published in English before 15 April 2017 that evaluated both cognition and gait among non-demented older adults either as a function of DM2 or HTN status or as a function of continuous variables that indicate disease severity and/or management (e...
December 20, 2017: Clinical Neuropsychologist
https://www.readbyqxmd.com/read/29249960/behavioral-and-neuroimaging-evidence-for-facial-emotion-recognition-in-elderly-korean-adults-with-mild-cognitive-impairment-alzheimer-s-disease-and-frontotemporal-dementia
#15
Soowon Park, Taehoon Kim, Seong A Shin, Yu Kyeong Kim, Bo Kyung Sohn, Hyeon-Ju Park, Jung-Hae Youn, Jun-Young Lee
Background: Facial emotion recognition (FER) is impaired in individuals with frontotemporal dementia (FTD) and Alzheimer's disease (AD) when compared to healthy older adults. Since deficits in emotion recognition are closely related to caregiver burden or social interactions, researchers have fundamental interest in FER performance in patients with dementia. Purpose: The purpose of this study was to identify the performance profiles of six facial emotions (i.e., fear, anger, disgust, sadness, surprise, and happiness) and neutral faces measured among Korean healthy control (HCs), and those with mild cognitive impairment (MCI), AD, and FTD...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/29248758/poor-cognitive-ageing-vulnerabilities-mechanisms-and-the-impact-of-nutritional-interventions
#16
REVIEW
Sophie Miquel, Claire Champ, Jon Day, Esther Aarts, Ben A Bahr, Martijntje Bakker, Diána Bánáti, Vittorio Calabrese, Tommy Cederholm, John Cryan, Louise Dye, Jonathan A Farrimond, Aniko Korosi, Sophie Layé, Stuart Maudsley, Dragan Milenkovic, M Hasan Mohajeri, John Sijben, Alina Solomon, Jeremy P E Spencer, Sandrine Thuret, Wim Vanden Berghe, David Vauzour, Bruno Vellas, Keith Wesnes, Peter Willatts, Raphael Wittenberg, Lucie Geurts
BACKGROUND: Ageing is a highly complex process marked by a temporal cascade of events, which promote alterations in the normal functioning of an individual organism. The triggers of normal brain ageing are not well understood, even less so the factors which initiate and steer the neuronal degeneration, which underpin disorders such as dementia. A wealth of data on how nutrients and diets may support cognitive function and preserve brain health are available, yet the molecular mechanisms underlying their biological action in both normal ageing, age-related cognitive decline, and in the development of neurodegenerative disorders have not been clearly elucidated...
December 15, 2017: Ageing Research Reviews
https://www.readbyqxmd.com/read/29237710/short-term-outcomes-and-factors-associated-with-adverse-events-among-adults-discharged-from-the-emergency-department-after-treatment-for-acute-heart-failure
#17
MULTICENTER STUDY
Dana R Sax, Dustin G Mark, Renee Y Hsia, Thida C Tan, Grace H Tabada, Alan S Go
BACKGROUND: Although 80% of patients with heart failure seen in the emergency department (ED) are admitted, less is known about short-term outcomes and demand for services among discharged patients. METHODS AND RESULTS: We examined adult members of a large integrated delivery system who visited an ED for acute heart failure and were discharged from January 1, 2013, through September 30, 2014. The primary outcome was a composite of repeat ED visit, hospital admission, or death within 7 days of discharge...
December 2017: Circulation. Heart Failure
https://www.readbyqxmd.com/read/29228201/widespread-brain-tau-and-its-association-with-ageing-braak-stage-and-alzheimer-s-dementia
#18
Val J Lowe, Heather J Wiste, Matthew L Senjem, Stephen D Weigand, Terry M Therneau, Bradley F Boeve, Keith A Josephs, Ping Fang, Mukesh K Pandey, Melissa E Murray, Kejal Kantarci, David T Jones, Prashanthi Vemuri, Jonathan Graff-Radford, Christopher G Schwarz, Mary M Machulda, Michelle M Mielke, Rosebud O Roberts, David S Knopman, Ronald C Petersen, Clifford R Jack
Autopsy data have proposed that a topographical pattern of tauopathy occurs in the brain with the development of dementia due to Alzheimer's disease. We evaluated the findings of tau-PET to better understand neurofibrillary tangle development as it is seen in cognitively unimpaired and impaired individuals. The evolution of Alzheimer's disease tauopathy in cognitively unimpaired individuals needs to be examined to better understand disease pathogenesis. Tau-PET was performed in 86 cognitively impaired individuals who all had abnormal amyloid levels and 601 cognitively unimpaired individuals...
December 8, 2017: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/29226863/associations-between-use-of-specific-analgesics-and-concentrations-of-amyloid-%C3%AE-42-or-phospho-tau-in-regions-of-human-cerebral-cortex
#19
Margaret E Flanagan, Eric B Larson, Rod L Walker, C Dirk Keene, Nadia Postupna, Brenna Cholerton, Joshua A Sonnen, Sascha Dublin, Paul K Crane, Thomas J Montine
Analgesics are commonly used by older adults, raising the question of whether their use might contribute to dementia risk and neuropathologic changes of Alzheimer's disease (AD). The Adult Changes in Thought (ACT) study is a population-based study of brain aging and incident dementia among people 65 years or older who are community dwelling and not demented at entry. Amyloid-β (Aβ)42 and phospho-tau were quantified using Histelide in regions of cerebral cortex from 420 brain autopsies. Total standard daily doses of prescription opioid and non-aspirin nonsteroidal anti-inflammatory drug (NSAID) exposure during a defined 10-year exposure window were identified using automated pharmacy dispensing data and used to classify people as having no/low, intermediate, or high exposure...
December 8, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/29226070/economic-burden-of-community-acquired-pneumonia-among-elderly-patients-a-japanese-perspective
#20
Keiko Konomura, Hideaki Nagai, Manabu Akazawa
Background: This study aimed to estimate the economic burden of community-acquired pneumonia (CAP) among elderly patients in Japan. In addition, the study evaluated the relationship between total treatment cost and CAP risk factors. Methods: An administrative database was searched for elderly patients (≥ 65 years old) who had pneumonia (ICD-10 code: J12-J18) and an antibiotic prescription between 1 June 2014 and 31 May 2015. The all-cause total healthcare costs of outpatient and inpatient CAP episodes were calculated...
2017: Pneumonia
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