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1.
J Am Geriatr Soc ; 2024 Mar 25.
Artículo en Inglés | MEDLINE | ID: mdl-38526042

RESUMEN

BACKGROUND: The United States faces a growing challenge with over 6.5 million people living with dementia (PLwD). PLwD and their caregivers struggle with cognitive, functional, behavioral, and psychosocial issues. As dementia care shifts to home settings, caregivers receive inadequate support but bear increasing responsibilities, leading to higher healthcare costs. In response, the Centers for Medicare & Medicaid Services (CMS) introduced the Guiding an Improving Dementia Experience (GUIDE) Model. The study explores the real-world implementation of the Cedars-Sinai C.A.R.E.S. Program, a pragmatic dementia care model, detailing its recruitment process and initial outcomes. METHODS: The Cedars-Sinai C.A.R.E.S. Program was integrated into the Epic electronic health record system and focused on proactive patient identification, engagement, interdisciplinary collaboration, care transitions, and ongoing care management. Eligible patients with a dementia diagnosis were identified through electronic health record and invited to join the program. Nurse practitioners with specialized training in dementia care performed comprehensive assessments using the CEDARS-6 tool, leading to personalized care plans developed in consultation with primary care providers. Patients benefited from a multidisciplinary team and support from care navigators. RESULTS: Of the 781 eligible patients identified, 431 were enrolled in the C.A.R.E.S. PROGRAM: Enrollees were racially diverse, with lower caregiver strain and patient behavioral and psychological symptoms of dementia (BPSD) severity compared to other programs dementia care programs. Healthcare utilization, including hospitalizations, emergency department (ED) admissions, and urgent care visits showed a downward trend over time. Completion of advanced directives and Physician Order of Life-Sustaining Treatment (POLST) increased after enrollment. CONCLUSION: The Cedars-Sinai C.A.R.E.S. Program offers a promising approach to dementia care. Its real-world implementation demonstrates the feasibility of enrolling a diverse population and achieving positive outcomes for PLwD and their caregivers, supporting the goals of national dementia care initiatives.

2.
Sci Rep ; 14(1): 1838, 2024 01 22.
Artículo en Inglés | MEDLINE | ID: mdl-38246978

RESUMEN

Blood pressure variability (BPV) and heart rate variability (HRV) have been associated with Alzheimer's Disease and Related Dementias (ADRD) in rigorously controlled studies. However, the extent to which BPV and HRV may offer predictive information in real-world, routine clinical care is unclear. In a retrospective cohort study of 48,204 adults (age 54.9 ± 17.5 years, 60% female) receiving continuous care at a single center, we derived BPV and HRV from routinely collected clinical data. We use multivariable Cox models to evaluate the association of BPV and HRV, separately and in combination, with incident ADRD. Over a median 3 [2.4, 3.0] years, there were 443 cases of new-onset ADRD. We found that clinically derived measures of BPV, but not HRV, were consistently associated with incident ADRD. In combined analyses, only patients in both the highest quartile of BPV and lowest quartile of HRV had increased ADRD risk (HR 2.34, 95% CI 1.44-3.81). These results indicate that clinically derived BPV, rather than HRV, offers a consistent and readily available metric for ADRD risk assessment in a real-world patient care setting. Thus, implementation of BPV as a widely accessible tool could allow clinical providers to efficiently identify patients most likely to benefit from comprehensive ADRD screening.


Asunto(s)
Enfermedad de Alzheimer , Adulto , Humanos , Femenino , Persona de Mediana Edad , Anciano , Masculino , Frecuencia Cardíaca , Presión Sanguínea , Estudios Retrospectivos , Proyectos de Investigación
3.
J Am Geriatr Soc ; 72(3): 822-827, 2024 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-37937688

RESUMEN

BACKGROUND: While patients with dementia entering the hospital have worse outcomes than those without dementia, early detection of dementia in the inpatient setting is less than 50%. We developed and assessed the positive predictive value (PPV) and feasibility of a novel electronic health record (EHR) banner to identify patients with dementia who present to the inpatient setting using data from the medical record. METHODS: We developed and implemented an EHR algorithm to flag hospitalized patients age ≥65 years with potential cognitive impairment in the Epic EHR system using dementia ICD-10 codes, FDA-approved medications, and the use of the term "dementia" in the emergency department physician note. Medical records were reviewed for all patients who were flagged with an EHR banner from October 2022 to May 2023. RESULTS: A total of 344 individuals were identified who had a banner on their chart of which 280 (81.4%) were either diagnosed with dementia or were on an FDA-approved dementia medication. Forty-three individuals who had confirmed dementia were identified by a medication only (15.4%). Of the patients without confirmed dementia, the majority (N = 33, 9.6%) had a diagnosis of altered mental status, cognitive dysfunction, or mild cognitive impairment. Only 31 individuals (9.0%) had no indication of dementia or cognitive decline in their problem list, past medical history, or medication list. CONCLUSIONS: We found that it was feasible to implement an EHR algorithm for prospective dementia identification with a high PPV. These types of algorithms provide an opportunity to accurately identify hospitalized older individuals for inclusion in quality improvement projects, clinical trials, pay-for-performance programs, and other initiatives.


Asunto(s)
Demencia , Registros Electrónicos de Salud , Humanos , Anciano , Estudios Prospectivos , Reembolso de Incentivo , Valor Predictivo de las Pruebas , Algoritmos , Demencia/diagnóstico
4.
Geriatr Nurs ; 54: 144-147, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37782977

RESUMEN

PROBLEM: Acute care nurses are the front line of hospital care for persons with dementia (PwD), yet many have inadequate dementia education and lack the confidence to appropriately manage PwD in the hospital setting. IMPLEMENTATION: Two acute care units with high rates of PwD in a large tertiary-care hospital were provided an education intervention involving interactive case-based discussion of the challenges of inpatient dementia care. RESULTS: Out of 190 nurses, 171 completed a one-hour virtual educational session, 142 completed pre/post-session confidence surveys, and 123 completed pre/post-session knowledge tests. There was a statistically significant improvement in knowledge scores from 75.8% pre-session to 88.4% post-session (p < 0.001), and pre/post-session dementia care confidence increased from 3.49 to 4.44 ( + 27.22%; p < 0.001) CONCLUSION: An interactive virtual education intervention improves acute care nurses' confidence and knowledge in managing PwD in the acute care setting and may improve hospital outcomes for this population.


Asunto(s)
Demencia , Enfermeras y Enfermeros , Humanos , Cuidados Críticos , Hospitales , Demencia/terapia
5.
Front Neurol ; 14: 1085885, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-36824417

RESUMEN

Background and objectives: Recognized as a potential risk factor for Alzheimer's disease and related dementias (ADRD), blood pressure variability (BPV) could be leveraged to facilitate identification of at-risk individuals at a population level. Granular BPV data are available during acute care hospitalization periods for potentially high-risk patients, but the incident ADRD risk association with BPV measured in this setting is unknown. Our objective was to evaluate the relation of BPV, measured during acute care hospitalization, and incidence of ADRD. Methods: We retrospectively studied adults, without a prior ADRD diagnosis, who were admitted to a large quaternary care medical center in Southern California between January 1, 2013 and December 31, 2019. For all patients, determined BPV, calculated as variability independent of the mean (VIM), using blood pressure readings obtained as part of routine clinical care. We used multivariable Cox proportional hazards regression to examine the association between BP VIM during hospitalization and the development of incident dementia, determined by new ICD-9/10 coding or the new prescription of dementia medication, occurring at least 2 years after the index hospitalization. Results: Of 81,892 adults hospitalized without a prior ADRD diagnosis, 2,442 (2.98%) went on to develop ADRD (2.6 to 5.2 years after hospitalization). In multivariable-adjusted Cox models, both systolic (HR 1.05, 95% CI 1.00-1.09) and diastolic (1.06, 1.02-1.10) VIM were associated with incident ADRD. In pre-specified stratified analyses, the VIM associations with incident ADRD were most pronounced in individuals over age 60 years and among those with renal disease or hypertension. Results were similar when repeated to include incident ADRD diagnoses made at least 1 or 3 years after index hospitalization. Discussion: We found that measurements of BPV from acute care hospitalizations can be used to identify individuals at risk for developing a diagnosis of ADRD within approximately 5 years. Use of the readily accessible BPV measure may allow healthcare systems to risk stratify patients during periods of intense patient-provider interaction and, in turn, facilitate engagement in ADRD screening programs.

6.
J Hosp Med ; 17(9): 702-709, 2022 09.
Artículo en Inglés | MEDLINE | ID: mdl-35972233

RESUMEN

BACKGROUND: Hospitalized persons living with dementia (PLWD) often experience behavioral symptoms that challenge medical care. OBJECTIVE: This study aimed to identify clinical practices and outcomes associated with behavioral symptoms in hospitalized PLWD. DESIGN: A retrospective cross-sectional study. SETTINGS AND PARTICIPANTS: The study included PLWD (65+) admitted to one of severe health system hospitals in 2019. INTERVENTION: Behavioral symptoms were defined as the presence of (1) a psychoactive medication for behavioral symptoms; (2) an order for physical restraints or constant observation; and/or (3) physician documentation of delirium, encephalopathy, or behavioral symptoms. MAIN OUTCOME AND MEASURES: Associations between behavioral symptoms and patient characteristics and hospital practices (e.g., bladder catheter) were examined. Multivariable logistic/linear regression was used to evaluate the association between behavioral symptoms and clinical outcomes (e.g., mortality). RESULTS: Of hospitalized PLWD (N = 8637), the average age was 84.5 years (IQR = 79-90), 61.7% were female, 60.1% were white, and 9.4% (n = 833) were Hispanic. Behavioral symptoms were identified in 40.6% (N = 3606) of individuals. Behavioral symptoms were significantly associated with male gender (40.3% vs. 36.9%, p = .001), white race (62.7% vs. 58.3%, p < .001), and residence in a facility prior to admission (26.6% vs. 23.7%, p < .001). Regarding hospital practices, indwelling bladder catheters (11.2% vs. 6.0%, p < .001) and dietary restriction (41.9% vs. 33.8%, p < .001) were associated with behavioral symptoms. In multivariable models, behavioral symptoms were associated with increased hospital mortality (odds ratio [OR]: 1.90, CI95%: 1.57-2.29), length of stay (parameter estimate: 2.10, p < .001), 30-day readmissions (OR: 1.14, CI95%: 1.014-1.289), and decreased discharge home (OR: 0.59, CI95%: 0.53-0.65, p < .001). CONCLUSIONS: Given the association between behavioral symptoms and poor clinical outcomes, there is an urgent need to improve the provision of care for hospitalized PLWD.


Asunto(s)
Demencia , Hospitales , Anciano de 80 o más Años , Síntomas Conductuales/etiología , Estudios Transversales , Demencia/complicaciones , Demencia/epidemiología , Femenino , Humanos , Masculino , Estudios Retrospectivos
8.
9.
Geriatr Nurs ; 42(2): 447-459, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-33714024

RESUMEN

The University of California, Los Angeles Alzheimer's and Dementia Care (ADC) program enrolls persons living with dementia (PLWD) and their family caregivers as dyads to work with nurse practitioner dementia care specialists to provide coordinated dementia care. At one year, despite disease progression, overall the PLWDs' behavioral and depressive symptoms improved. In addition, at one-year, overall caregiver depression, strain, and distress related to behavioral symptoms also improved. However, not all dyads enrolled in the ADC program showed improvement in these outcomes. We conducted a mixed qualitative-quantitative study to explore why some participants did not benefit and what could be changed in this and other similar dementia management programs to increase the percentage who benefit. Semi-structured interviews (N=12) or surveys (N=41) were completed with 53 caregivers by telephone, mail and online. Seven areas for potential program improvement were identified from the first 12 interviews. These included: recommendations that did not match caregivers' perceived care needs, barriers to accessing care and utilizing resources, differing care needs based on stage of dementia, needing services not offered by the ADC, needing more education or support, behavioral recommendations that the caregiver felt did not work, and poor rapport of the dementia expert with caregivers. Despite having been identified as having had no clinical benefit from participating in the program, most caregivers (85%) reported that the program was very beneficial or extremely beneficial. Respondents identified the close, longitudinal relationship and access to a dementia care expert as particularly beneficial. This dichotomy highlights that perceived benefit for most of the interviewed caregivers was not captured with the formal instruments used by the program.


Asunto(s)
Enfermedad de Alzheimer , Demencia , Cuidadores , Demencia/terapia , Humanos , Teléfono
10.
Hypertension ; 77(3): 972-979, 2021 03 03.
Artículo en Inglés | MEDLINE | ID: mdl-33461314

RESUMEN

Hypertension is related to increased risk of cognitive decline in a highly age-dependent manner. However, conflicting evidence exists on the relation between age of hypertension onset and cognition. Our goal was to investigate the association between early- versus late-onset hypertension and midlife cognitive performance in 2946 CARDIA study (Coronary Artery Risk Development in Young Adults) participants (mean age 55±4, 57% women). The participants underwent 9 repeat examinations, including blood pressure measurements, between 1985 to 1986 and 2015 to 2016. The participants underwent brain magnetic resonance imaging and completed Digit Symbol Substitution Test, Rey Auditory Verbal Learning Test, Stroop interference test, and the Montreal Cognitive Assessment to evaluate cognitive function at the year 30 exam. We assessed the relation between age of hypertension onset and cognitive function using linear regression models adjusted for cognitive decline risk factors, including systolic blood pressure. We observed that individuals with early-onset hypertension (onset at <35 years) had 0.24±0.09, 0.22±0.10, 0.27±0.09, and 0.19±0.07 lower standardized Z-scores in Digit Symbol Substitution Test, Stroop test, Montreal Cognitive Assessment, and a composite cognitive score than participants without hypertension (P<0.05 for all). In contrast, hypertension onset at ≥35 years was not associated with cognitive function (P >0.05 for all). In a subgroup of 559 participants, neither early- nor late-onset hypertension was related to macrostructural brain alterations (P >0.05 for all). Our results indicate that early-onset hypertension is a potent risk factor for midlife cognitive impairment. Thus, age of hypertension onset assessment in clinical practice could improve risk stratification of cognitive decline in patients with hypertension.


Asunto(s)
Presión Sanguínea/fisiología , Trastornos del Conocimiento/fisiopatología , Cognición/fisiología , Función Ejecutiva/fisiología , Hipertensión/fisiopatología , Adulto , Edad de Inicio , Encéfalo/diagnóstico por imagen , Encéfalo/fisiología , Femenino , Humanos , Modelos Lineales , Imagen por Resonancia Magnética/métodos , Masculino , Persona de Mediana Edad , Estudios Prospectivos , Factores de Riesgo , Adulto Joven
11.
J Am Geriatr Soc ; 69(1): 210-215, 2021 01.
Artículo en Inglés | MEDLINE | ID: mdl-32978784

RESUMEN

BACKGROUND/OBJECTIVES: Cognitive and mobility impairments are common and underdiagnosed chronic conditions that afflict community-dwelling older adults. This study describes the organization, implementation, and evaluation of an intervention for underserved and ethnically diverse older patients with dementia and/or falls risk. DESIGN: Observation, baseline and 1 year after intervention. SETTING: Community-based primary care county clinics in inland southern California. PARTICIPANTS: A total of 272 persons, aged 70 years and older, who screened positive for falls and/or dementia and enrolled in the Cognition and Mobility Care Management program during the study period. INTERVENTION: A nurse care manager performed a patient and caregiver evaluation and created and implemented a care plan with medical, behavioral, and psychosocial interventions in partnership with patients and their primary care providers. MEASUREMENTS: Process outcomes included rates of positive screening for dementia and fall risk, referral, enrollment, and visit completion. Patient outcomes included fall history, mobility and cognitive assessments, and depression scales. Patients and/or caregivers completed questionnaires rating perceived benefits of enrollment after 1 year in the program. RESULTS: Medical assistants screened 573 patients aged 70 years and older during the study period; 78% screened positive for dementia and/or fall risk. Of the patients who screened positive, 94% were referred; 91% of contacted patients elected to enroll, and 272 patients completed an intake visit (meanage = 77 years; 65% female; 75% Latino; 10% African American). The patients and caregivers who completed satisfaction questionnaires 1 year after enrollment rated the program highly, and 92% would recommend the program to others. CONCLUSION: A primary care-based screening and comanagement program to identify and manage dementia and falls risk in primarily Latino and African American older adult patients living in an underserved area was well received, with high satisfaction and perceived benefit from patients and caregivers.


Asunto(s)
Accidentes por Caídas/prevención & control , Cuidadores/psicología , Demencia , Enfermeras Administradoras , Manejo de Atención al Paciente , Poblaciones Vulnerables , Anciano , Anciano de 80 o más Años , California , Redes Comunitarias , Demencia/diagnóstico , Demencia/etnología , Etnicidad/estadística & datos numéricos , Femenino , Humanos , Masculino , Tamizaje Masivo , Atención Primaria de Salud , Derivación y Consulta , Encuestas y Cuestionarios
12.
Gerontol Geriatr Educ ; 41(1): 121-132, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-31451093

RESUMEN

The In-Home Supportive Services (IHSS) program in California provides direct care for low-income seniors and people with disabilities. Yet, the vast majority of these workers receive little to no training in caring for consumers, especially those with Alzheimer's disease and related dementias (ADRD). We developed and implemented a competency-based training program for IHSS caregivers who provide care for persons with ADRD. The 10-week, 35-hour program consisted of training modules with topics ranging from roles and rights of the care recipient to assisting with personal hygiene, with a focus on managing ADRD-related behaviors. The in-person training was delivered in English and Spanish to two cohorts of 30 IHSS workers each. Fifty-seven participants completed the training program; the majority in both trainings were female (79%) and self-identified as Latina (70%). There were statistically significant gains post-intervention in overall confidence in caregiving skills and knowledge among all participants.


Asunto(s)
Enfermedad de Alzheimer/enfermería , Cuidadores/educación , Servicios de Atención de Salud a Domicilio , Adulto , California , Femenino , Humanos , Masculino , Persona de Mediana Edad , Adulto Joven
13.
J Am Geriatr Soc ; 67(11): 2267-2273, 2019 11.
Artículo en Inglés | MEDLINE | ID: mdl-31355423

RESUMEN

BACKGROUND/OBJECTIVES: Persons with Alzheimer disease and related dementias (ADRDs) require comprehensive care that spans health systems and community-based organizations. This study examined the clinical outcomes of a comprehensive dementia care program and identified subgroups who were more likely to benefit. DESIGN: Observational, baseline and 1 year after intervention. SETTING: Urban, academic medical center. PARTICIPANTS: A total of 554 persons with dementia and their caregivers who had 1-year follow-up evaluations and data on clinical outcomes. INTERVENTION: Health system-based comprehensive dementia care management program using nurse practitioner dementia care managers. MEASUREMENTS: Patient measures included the Mini-Mental State Examination (MMSE), the Functional Activities Questionnaire, Basic and Instrumental Activities of Daily Living scales, the Cornell Scale for Depression in Dementia, and the Neuropsychiatric Inventory Questionnaire (NPI-Q) Severity. Caregiver measures included the Modified Caregiver Strain Index, the Patient Health Questionnaire-9, NPI-Q Distress, and the Dementia Burden Scale-Caregiver). We used established minimal clinically important differences and lowest tertiles of baseline symptoms to define improving symptoms and maintaining low symptoms as clinical benefit for patients and caregivers. RESULTS: At year 1, persons with ADRD improved on all scales, except MMSE and functional status measures; caregivers improved on all scales. Using validated instruments, 314/543 (58%) of patients, 282/447 (63%) of caregivers, and 376/501 (75%) of patients or caregivers demonstrated clinical benefit. In adjusted multivariate models, at year 1, more behavioral symptoms and fewer depression symptoms at baseline were associated with patient improvement; and fewer baseline depression symptoms were associated with maintaining low behavioral symptoms. Male caregiver sex, higher baseline caregiver burden, and caring for patients with fewer baseline depression symptoms were associated with caregiver improvement. Male caregiver sex and patients with fewer depression symptoms, fewer behavioral symptoms, and more functional impairment at baseline were associated with caregivers maintaining low burden at 1 year. CONCLUSIONS: Health system-based comprehensive dementia care management is a promising approach to improving clinical outcomes, with benefits for both patients and caregivers. J Am Geriatr Soc 67:2267-2273, 2019.


Asunto(s)
Actividades Cotidianas/psicología , Adaptación Psicológica , Enfermedad de Alzheimer/psicología , Cuidadores/psicología , Atención Integral de Salud/métodos , Demencia/psicología , Adulto , Anciano , Anciano de 80 o más Años , Enfermedad de Alzheimer/terapia , Demencia/terapia , Femenino , Estudios de Seguimiento , Humanos , Masculino , Persona de Mediana Edad , Pruebas Neuropsicológicas , Escalas de Valoración Psiquiátrica , Estudios Retrospectivos , Índice de Severidad de la Enfermedad
14.
J Health Care Poor Underserved ; 30(2): 739-748, 2019.
Artículo en Inglés | MEDLINE | ID: mdl-31130548

RESUMEN

Despite the complexity of care associated with older adults who have been diagnosed with Alzheimer's disease and related dementias, many in-home paid caregivers receive little to no training in competent care for these older adults. The In-Home Supportive Services program in California provides care for elderly, blind, and disabled people with the goal of ensuring the care recipients may remain safely in their own homes. Yet, these caregivers are not required to receive training in any specific disease or condition prior to providing caregiving services. A Geriatrics Workforce Enhancement Program and the Riverside County Department of Social Services jointly developed and implemented three different interactive, community-based, knowledge and skills-based training courses for IHSS caregivers. Analysis of pre/post course evaluations across all three courses demonstrated statistically significant gains in knowledge and self-rated skills among the participants.


Asunto(s)
Cuidadores/educación , Servicios de Atención de Salud a Domicilio , Área sin Atención Médica , Adulto , Anciano , California , Demencia/terapia , Femenino , Humanos , Masculino , Persona de Mediana Edad , Encuestas y Cuestionarios , Adulto Joven
18.
J Am Geriatr Soc ; 65(1): 207-211, 2017 01.
Artículo en Inglés | MEDLINE | ID: mdl-27902840

RESUMEN

As many as 50% of people satisfying diagnostic criteria for dementia are undiagnosed. A team-based training program for dementia screening and management was developed targeting four professions (medicine, nursing, pharmacy, social work) whose scope of practice involves dementia care. An interprofessional group of 10 faculty members was trained to facilitate four interactive competency stations on dementia screening, differential diagnoses, dementia management and team care planning, and screening for and managing caregiver stress. Registrants were organized into teams of five members, with at least one member of each profession per team. The teams rotated through all stations, completing assigned tasks through interprofessional collaboration. A total of 117 professionals (51 physicians, 11 nurses, 20 pharmacists, 24 social workers, 11 others) successfully completed the program. Change scores showed significant improvements in overall competence in dementia assessment and intervention (very low = 1; very high = 5; average change 1.12, P < .001), awareness of importance of dementia screening (average change 0.85, P < .001), and confidence in managing medication (average change 0.86, P < .001). Eighty-seven participants (82.9%) reported feeling confident or very confident using the dementia toolkit at their home institution. In a survey administered 3 months after the session, 48 respondents reported that they had changed their approach to administering the Mini-Cog test (78%), differential diagnosis (49%), assessment of caregiver stress (74%), and accessing community support and services (69%). In conclusion, team-based interprofessional competency training is a team teaching model that can be used to enhance competency in dementia screening and management in medical, nursing, pharmacy, and social work practitioners.


Asunto(s)
Competencia Clínica , Demencia/diagnóstico , Demencia/terapia , Educación Continua , Grupo de Atención al Paciente , Congresos como Asunto , Humanos , Cuerpo Médico , Pruebas Neuropsicológicas , Personal de Enfermería , Farmacéuticos , Trabajadores Sociales
19.
J Gerontol A Biol Sci Med Sci ; 72(6): 789-795, 2017 Jun 01.
Artículo en Inglés | MEDLINE | ID: mdl-27422439

RESUMEN

BACKGROUND: Several longitudinal studies found an inverse relationship between levels of physical activity and cognitive decline, dementia, and/or Alzheimer's disease (AD), but results have been inconsistent. We followed an older, community-based cohort for over a decade to examine the association of physical activity with the risk of incident dementia and subclinical brain MRI markers of dementia. METHODS: The physical activity index (PAI) was assessed in the Framingham Study Original and Offspring cohorts, aged 60 years or older. We examined the association between PAI and risk of incident all-cause dementia and AD in participants of both cohorts who were cognitively intact and had available PAI (n = 3,714; 54% women; mean age = 70±7 years). We additionally examined the association between PAI and brain MRI in the Offspring cohort (n = 1,987). RESULTS: Over a decade of follow-up, 236 participants developed dementia (188 AD). Participants in the lowest quintile of PAI had an increased risk of incident dementia compared with those in higher quintiles (hazard ratio [HR] = 1.50, 95% confidence interval [CI] = 1.04-1.97, p = .028) in a multivariable-adjusted model. Secondary analysis revealed that this relation was limited to participants who were apolipoprotein (APO)E ε4 allele noncarriers (HR = 1.58, 95% CI = 1.08-2.32; p = .018) and strongest in participants aged 75 years or older. PAI was also linearly related to total brain and hippocampal volumes (ß ± SE = 0.24±0.06; p < .01 and 0.004±0.001; p = .003, respectively). CONCLUSION: Low physical activity is associated with a higher risk for dementia in older individuals, suggesting that a reduced risk of dementia and higher brain volumes may be additional health benefits of maintaining physical activity into old age.


Asunto(s)
Enfermedad de Alzheimer/epidemiología , Encéfalo/diagnóstico por imagen , Demencia/epidemiología , Ejercicio Físico , Factores de Edad , Anciano , Alelos , Apolipoproteína E4/genética , Estudios de Cohortes , Femenino , Humanos , Estudios Longitudinales , Imagen por Resonancia Magnética , Masculino , Riesgo , Estados Unidos/epidemiología
20.
J Alzheimers Dis ; 53(4): 1597-608, 2016 07 14.
Artículo en Inglés | MEDLINE | ID: mdl-27540965

RESUMEN

BACKGROUND: Handgrip strength and gait speed are simple measures of physical capability and have been associated with current and future health outcomes. However, studies on their associations with brain structure and function in middle-aged adults are lacking. OBJECTIVE: To assess the relationship of fast-paced walking speed and handgrip strength with risk of dementia, Alzheimer's disease (AD), and stroke, as well as the cross-sectional associations with cognitive and brain magnetic resonance imaging (MRI) measures in a middle-aged community sample. METHODS: Framingham Offspring (n = 2,176; mean age 62, 54% female) had physical function, brain MRI, and cognitive evaluations between 1999 and 2005 and were followed-up for incident dementia AD and stroke until 11 years later. We related walking speed and handgrip strength to incident dementia, AD, and stroke using Cox models, and to brain and cognitive measures using multivariable linear and logistic regression. Models were adjusted for age, sex, education, and vascular risk factors. RESULTS: Slow walking and weak handgrip were associated with more than 2.5-fold increase in risk of AD. Weaker handgrip was associated with an increased risk of incident stroke (HR 1.74, 95% CI: 1.12-2.70/SDU, p = 0.01) in persons ≥65 years. Both measures were associated with lower total brain volume and poorer performance on tests of visual memory, language, executive function, and visuoperceptual function. Slower gait was also related to poorer verbal memory, and weaker handgrip to poorer abstraction. CONCLUSION: Tests of walking speed and handgrip strength may serve as clinical markers of brain structure and function and may improve dementia risk prediction.


Asunto(s)
Encefalopatías/fisiopatología , Trastornos del Conocimiento/diagnóstico , Trastornos del Conocimiento/etiología , Fuerza de la Mano/fisiología , Caminata/fisiología , Adulto , Anciano , Anciano de 80 o más Años , Enfermedad de Alzheimer/complicaciones , Encefalopatías/diagnóstico por imagen , Estudios de Cohortes , Estudios Transversales , Demencia/complicaciones , Femenino , Humanos , Procesamiento de Imagen Asistido por Computador , Imagen por Resonancia Magnética , Masculino , Persona de Mediana Edad , Pruebas Neuropsicológicas , Características de la Residencia , Factores de Riesgo , Accidente Cerebrovascular/complicaciones
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