Sex differences between post-menopausal women and similar age men in response to orthostatic stress following two weeks of bed rest.

Reduced orthostatic tolerance is common following periods of bed rest that are associated with illness or surgery, putting individuals at higher risk for syncope and falls following hospitalization. Following menopause, mechanisms of female cardiovascular regulation change, which may be associated with sex-specific responses to orthostatic stress following bed rest. The purpose of our experiment was to investigate sex differences between healthy post-menopausal women and similar age men (age: 55-65 years) for their orthostatic tolerance and cerebrovascular responses to standing following bed rest.

Trajectories of functional decline and predictors in long-term care settings: a retrospective cohort analysis of Canadian nursing home residents.

Unlabelled: Decline in the ability to perform activities of daily living (ADL) or 'functional decline' is a major health concern among aging populations. With intervention, ADL decline may be delayed, prevented or reversed. The capacity to anticipate the trajectory of future functional change can enhance care planning and improve outcome for residents.

Impact of a national dementia research consortium: The Canadian Consortium on Neurodegeneration in Aging (CCNA).

The Canadian Consortium on Neurodegeneration in Aging (CCNA) was created by the Canadian federal government through its health research funding agency, the Canadian Institutes for Health Research (CIHR), in 2014, as a response to the G7 initiative to fight dementia. Two five-year funding cycles (2014-2019; 2019-2024) have occurred following peer review, and a third cycle (Phase 3) has just begun. A unique construct was mandated, consisting of 20 national teams in Phase I and 19 teams in Phase II (with research topics spanning from basic to clinical science to health resource systems) along with cross-cutting programs to support them.

Trabecular Bone Score in Individuals with Chronic Spinal Cord Injury: A Cross-Sectional Study.

Objectives: To describe lumbar spine (LS) trabecular bone score (TBS) values after SCI, and to explore the differences in fractures risk assessment between FRAX® and TBS-adjusted FRAX® in individuals living with chronic SCI.

Methods: Baseline dual-energy x-ray absorptiometry (DXA) scans from an established cohort were acquired using a Hologic Discovery QDR 4500. TBS measurements were performed using the TBS iNsight software version 2.

Being a Husband and Caregiver: The Adjustment of Roles When Caring for a Wife Who Has Dementia.

As demographics and gender norms shift, more older men will be providing care for their wives living with dementia than ever before. Research on husbands as caregivers is limited and offers an incomplete picture of their role development and how they experience caregiving. This study examined husbands whose wives have dementia and how they provide care and construct their sense of self.

Barriers and facilitators to providing rehabilitation for long-term care residents with dementia: a qualitative study.

Background: Rehabilitation can help long-term care (LTC) residents with dementia maintain their independence. However, many residents do not receive rehabilitation. This study aimed to identify the barriers and facilitators to providing rehabilitation for LTC residents with dementia and propose practical interventions for overcoming them.

Beamforming-integrated neural networks for ultrasound imaging.

Sparse matrix beamforming (SMB) is a computationally efficient reformulation of delay-and-sum (DAS) beamforming as a single sparse matrix multiplication. This reformulation can potentially dovetail with machine learning platforms like TensorFlow and PyTorch that already support sparse matrix operations. In this work, using SMB principles, we present the development of beamforming-integrated neural networks (BINNs) that can rationally infer ultrasound images directly from pre-beamforming channel-domain radiofrequency (RF) datasets.

Among people on osteoporosis medication, loss of appendicular or total body lean mass is an independent risk factor for hip and major osteoporotic fractures.

Unlabelled: People with prior lean mass loss had a ~ 10% higher risk of MOF and ~ 22-26% higher risk of hip fracture, and the results were similar in people on anti-osteoporosis medications. Loss of lean mass is associated with increased fracture risk. Patients should be encouraged to pursue strategies to prevent loss of lean mass.

Plasticity of the heart in response to changes in physical activity.

The human heart is very adaptable, with chamber size, wall thickness and ventricular stiffness all modified by periods of inactivity or exercise training. Herein, we summarize the cardiac adaptations induced by changes in physical activity, ranging from bed rest and spaceflight to endurance exercise training, while also highlighting how the ageing process (a long-term model of inactivity) affects cardiac plasticity. Severe inactivity during bed rest or spaceflight leads to cardiac atrophy and ventriculo-vascular stiffening.

Factors Associated With the Initiation of Comfort-Focused Nutrition Care Orders for Long-Term Care Residents at End of Life.

Background: Comfort-focused nutrition orders are recommended to manage eating changes among long-term care (LTC) residents nearing the end of life, though little is known about their current use. This investigation aims to describe current practices and identify resident-level and time-dependent factors associated with comfort-focused nutrition orders in this context.

Methods: Data were retrospectively extracted from resident charts of decedents (≥65 years at death, admitted ≥6 months) in 18 LTC homes from two sampling frames across southern Ontario, Canada.

Use of Potentially Inappropriate Medications among Older Adults with Dementia or Cognitive Impairment Attending Memory Clinics: A Protocol for a Systematic Review and Meta-Analysis.

Introduction: Older adults with dementia who are on multiple medications are more vulnerable to the use of potentially inappropriate medications (PIMs), which can significantly increase the risk of adverse events and drug-related problems. PIMs use is prevalent and varies among older adults with dementia or cognitive impairment (CI) attending memory clinics. However, the prevalence of PIMs, polypharmacy, and hyper-polypharmacy among older adults with dementia or CI who are attending memory clinics is not well understood.

What Do We Know About Nurse Practitioner/Physician Care Models in Long-Term Care: Results of a Scoping Review.

Objectives: Due to the rise of the nurse practitioner (NP) role in long-term care settings, it is important to understand the underlying structures and processes that influence NP and physician care models. This scoping review aims to answer the question, "What are the structures, processes, and outcomes of care models involving NPs and physicians in long-term care (LTC) homes?" A secondary aim was to describe the structural enablers and barriers across care models.

Research Design And Methods: Seven databases were searched.

Prevalence of malnutrition and impact on 30-day hospital readmission in adults receiving home care and ambulatory care: A descriptive cohort study.

Background: Little is known about the prevalence of malnutrition among patients receiving home care (HC) and ambulatory care (AC) services. Further, the risk of hospital readmission in malnourished patients transitioning from hospital to HC or AC is also not well established. This study aims to address these two gaps.

Anticonvulsants in the Treatment of Behavioral and Psychological Symptoms in Dementia: A Systematic Review.

Objectives: Behavioral and psychological symptoms of dementia (BPSD) are common and impart a significant burden to patients, caregivers, and the health system. However, there are few pharmacological options for treating BPSD. We conducted a systematic review of clinical trials examining the efficacy of anticonvulsants in BPSD.

Characterization of internal jugular vein region-specific distension and flow patterns during progressive volume shifting.

Blood volume shifts during postural adjustment lead to irregular distension of the internal jugular vein (IJV). In microgravity, distension may contribute to flow stasis and thromboembolism, though the regional implications and associated risk remain unexplored. We characterized regional differences in IJV volume distension and flow complexity during progressive head-down tilt (HDT) (0°, -6°, -15°, -30°) using conventional ultrasound and vector flow imaging.

ESPEN guideline on nutrition and hydration in dementia - Update 2024.

Background & Aims: Dementia is accompanied by a variety of changes that result in an increased risk of malnutrition and low-intake dehydration. This guideline update aims to give evidence-based recommendations for nutritional care of persons with dementia in order to prevent and treat these syndromes.

Methods: The previous guideline version was reviewed and expanded in accordance with the standard operating procedure for ESPEN guidelines.

The Detrimental Effects of Bedrest: Premature Cardiovascular Aging and Dysfunction.

Bedrest as an experimental paradigm or as an in-patient stay for medical reasons has negative consequences for cardiovascular health. The effects of severe inactivity parallel many of the changes experienced with natural aging but over a much shorter duration. Cardiac function is reduced, arteries stiffen, neural reflex responses are impaired, and metabolic and oxidative stress responses impose burden on the heart and vascular systems.