The European Working Group on Sarcopenia in Older People (EWGSOP) developed a practical clinical definition and consensus diagnostic criteria for age-related sarcopenia. EWGSOP included representatives from four participant organisations, i.e. the European Geriatric Medicine Society, the European Society for Clinical Nutrition and Metabolism, the International Association of Gerontology and Geriatrics-European Region and the International Association of Nutrition and Aging. These organisations endorsed the findings in the final document. The group met and addressed the following questions, using the medical literature to build evidence-based answers: (i) What is sarcopenia? (ii) What parameters define sarcopenia? (iii) What variables reflect these parameters, and what measurement tools and cut-off points can be used? (iv) How does sarcopenia relate to cachexia, frailty and sarcopenic obesity? For the diagnosis of sarcopenia, EWGSOP recommends using the presence of both low muscle mass + low muscle function (strength or performance). EWGSOP variously applies these characteristics to further define conceptual stages as 'presarcopenia', 'sarcopenia' and 'severe sarcopenia'. EWGSOP reviewed a wide range of tools that can be used to measure the specific variables of muscle mass, muscle strength and physical performance. Our paper summarises currently available data defining sarcopenia cut-off points by age and gender; suggests an algorithm for sarcopenia case finding in older individuals based on measurements of gait speed, grip strength and muscle mass; and presents a list of suggested primary and secondary outcome domains for research. Once an operational definition of sarcopenia is adopted and included in the mainstream of comprehensive geriatric assessment, the next steps are to define the natural course of sarcopenia and to develop and define effective treatment.

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Sarcopenia: European consensus on definition and diagnosis Report of the European Working Group on Sarcopenia in Older People

NCCN Clinical Practice Guidelines in Oncology (NCCN Guidelines

Degeneration and regeneration of the nervous system

Mini Mental State

The purpose of this book is to provide nurses with the best available research, thereby enabling better decisions that result in improved health care and safety practices and lead to better outcomes. Nurses often are the ones who find errors and prevent pa tient harm. In their focus on patient safety, nurses identify critical issues and research for evidence-based practice. This book is a great resource for practicing nurses, nurse educators, re searchers, leaders, and students. The Agency for Healthcare Research and Quality strongly promotes that safety and quality of health care is dependent on the availability of the best research possible and the ability to deliver results of research into the hands of practitioners, policy makers, and consumers. This text is a culmination of subject expert knowledge, practice, and research from 89 contributors who represent a broad range of nurses and senior researchers across the nation. The topics covered in this text provide excellent background for any clinician, nurse educator, or nurse leader. The topics include • evidence-based practice, • patient-centered care, • working environment for nurses, • care models, and • patient acuity. The chapters provide an easy-tounderstand guide and include a background section and analysis of the literature based on the topic presented. Practice implications are identified at the end of each chapter and guide efforts for improving quality and patient care. Research implications for each topic outline target areas for improvement and can be used by clinicians to inform and guide practice. There are also questions and issues to develop or expand thesis topics and research papers, which faculty members may find useful. A section on critical opportunities contains current topics, including wrong site surgery, communication hand offs by nurses, medication administration safety, medication reconciliation, and personal safety for nurses. These topics are very well presented with numerous research citations and examples from all areas of nursing— from patient entry to the facility to discharge and home care. The authors use exhibits, tables, guides, templates, models, and representations within each chapter and conclude with a list of references including web sites for further independent review and citation. The volumes are written in a manner that allows for quick access, and they are

Patient Safety and Quality: An Evidence-Based Handbook for Nurses

The postsurgical period during which neurons remain without target connections (chronic axotomy) and distal nerve stumps and target muscles are denervated (chronic denervation) deleteriously affects functional recovery. An autologous nerve graft and cross-suture paradigm in Sprague Dawley rats was used to systematically and independently control time of motoneuron axotomy, denervation of distal nerve sheaths, and muscle denervation to determine relative contributions of each factor to recovery failure. Tibial (TIB) nerve was cross-sutured to common peroneal (CP) nerve via a contralateral 15 mm nerve autograft to reinnervate the tibialis anterior (TA) muscle immediately or after prolonging TIB axotomy, CP autograft denervation, or TA muscle denervation. Numbers of motoneurons that reinnervated TA muscle declined exponentially from 99±15 to asymptotic mean (±SE) values of 35 ± 1, 41 ± 10, and 13 ± 5, respectively. Enlarged reinnervated motor units fully compensated for reduced motoneuron numbers after prolonged axotomy and autograft denervation, but the maximal threefold enlargement did not compensate for the severe loss of regenerating nerves through chronically denervated nerve stumps and for failure of reinnervated muscle fibers to recover from denervation atrophy. Muscle force, weight, and cross-sectional area declined. Our results demonstrate that chronic denervation of the distal stump plays a key role in reduced nerve regeneration, but the denervated muscle is also a contributing factor. That chronic Schwann cell denervation within the nerve autograft reduced regeneration less than after the denervation of both CP nerve stump and TA muscle, argues that chronic muscle denervation negatively impacts nerve regeneration.

https://www.jneurosci.org/content/jneuro/31/14/5325.full.pdf

The Basis for Diminished Functional Recovery after Delayed Peripheral Nerve Repair

Background and aims: Little is known about muscle strength as a predictor of disability among older Mexican Americans. The aim of this study was to examine the association between hand grip strength and 7-year incidence of ADL disability in older Mexican American men and women. Methods: A 7-year prospective cohort study of 2493 non-institutionalized Mexican American men and women aged 65 or older residing in five south-western states. Maximal hand grip strength test, body mass index, cognitive function, activities of daily living, self-reports of medical conditions (arthritis, diabetes, heart attack, stroke, cancer, hip fracture), and depressive symptoms were obtained. Results: In a Cox proportional regression analysis, there was a linear relationship between hand grip strength at baseline and risk of incident ADL disability over a 7-year follow-up. Among non-disabled men at baseline, the hazard ratio of any new ADL limitation was 1.90(95% CI 1.14–3.17) for those in the lowest quartile, when compared with men in the highest hand grip strength quartile, after controlling for age, marital status, medical conditions, high depressive symptoms, MMSE score, and BMI at baseline. Among non-disabled women at baseline, the hazard ratio of any new ADL limitation was 2.28 (95% CI 1.59–3.27) for those in the lowest quartile, when compared with women in the highest hand grip strength quartile. Conclusions: Hand grip strength is an independent predictor of ADL disability among older Mexican American men and women. The hand grip strength test is an easy, reliable, valid, inexpensive method of screening to identify older adults at risk of disability.

Hand grip strength and incident ADL disability in elderly Mexican Americans over a seven-year period

Background Cognitive decline and dementia are associated with disability and premature death in old age We examined whether low handgrip strength predicts subsequent cognitive decline in older Mexican Americans Methods We worked with a 7-year prospective cohort of 2160 noninstitutionalized Mexican Americans aged 65 years or older from the Hispanic Established Population for the Epidemiological Study of the Elderly (H-EPESE) who had a Mini-Mental State Examination (MMSE) score � 21 at baseline Measures included: (i) sociodemographic factors (age, gender, and education), handgrip strength, and near and distant visual impairment from baseline interview; and (ii) MMSE, body mass index (BMI), and medical conditions (stroke, heart attack, diabetes, depression, and hypertension) from four waves of data collection Results Using general linear mixed models, we found a significant trend with scores in the lowest quartile of handgrip strength at baseline to be associated with lower MMSE scores over time (estimate ¼� 128, standard error ¼ 016; p , 0001) There was a significant handgrip Strength-by-Time interaction with MMSE scores Participants in the lowest handgrip strength quartile had a greater cognitive decline over time (estimate ¼� 026, standard error ¼ 007; p , 001) than did those participants in the highest quartile This association remained statistically significant after controlling for potential confounding factors Conclusion Older Mexican Americans with reduced handgrip strength at baseline demonstrated a statistically significant decline in cognitive function over a 7-year period By contrast, participants in the highest handgrip strength quartile maintained a higher level of cognitive function

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Handgrip Strength and Cognitive Decline in Older Mexican Americans

OBJECTIVES: To examine the association between frailty status and change in cognitive function over time in older Mexican Americans.

DESIGN: Data used were from the Hispanic Established Population for the Epidemiological Study of the Elderly.

SETTING: Five southwestern states: Texas, New Mexico, Colorado, Arizona, and California.

PARTICIPANTS: One thousand three hundred seventy noninstitutionalized Mexican-American men and women aged 65 and older with a Mini-Mental State Examination (MMSE) score of 21 or higher at baseline (1995/96).

MEASUREMENTS: Frailty, defined as three or more of the following components: unintentional weight loss of more than 10 pounds, weakness (lowest 20% in grip strength), self-reported exhaustion, slow walking speed (lowest 20% in 16-foot walk time in seconds), and low physical activity level (lowest 20% on Physical Activity Scale for the Elderly score). Information about sociodemographic factors, MMSE score, medical conditions (stroke, heart attack, diabetes mellitus, arthritis, cancer, and hypertension), depressive symptoms, and visual impairment was obtained.

RESULTS: Of the 1,370 subjects, 684 (49.9%) were not frail, 626 (45.7%) were prefrail (1–2 components), and 60 (4.4%) were frail (≥3 components) in 1995/96. Using general linear mixed models, it was found that frail subjects had greater cognitive decline over 10 years than not frail subjects (estimate=−0.67, standard error=0.13; P<.001). This association remained statistically significant after controlling for potential confounding factors.

CONCLUSION: Frail status in older Mexican Americans with MMSE scores of 21 or higher at baseline is an independent predictor of MMSE score decline over a 10-year period. Future research is needed to establish pathophysiological components that can clarify the relationship between frailty and cognitive decline.

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Relationship between frailty and cognitive decline in older Mexican Americans.

Background:Testosterone therapy for older men has increased substantially over the past decade. Research on the effects of testosterone therapy on cardiovascular outcomes has yielded inconsistent results. Objective: To examine the risk of myocardial infarction (MI) in a population-based cohort of older men receiving intramuscular testosterone. Methods: Using a 5% national sample of Medicare beneficiaries, we identified 6355 patients treated with at least 1 injection of testosterone between January 1, 1997, and December 31, 2005. We matched this cohort to 19 065 testosterone nonusers at a 1:3 ratio based on a composite MI prognostic score. Patients were followed until December 31, 2005, or until they lost coverage from Medicare, enrolled in a health maintenance organization, experienced a MI, or died. Results: In a Cox regression analysis adjusting for demographic and clinical characteristics, receipt of testosterone therapy was not associated with an increased risk of MI (hazard ratio [HR] = 0.84; 95% CI = 0.69-1.02). In this analysis, there was an interaction between receipt of testosterone and quartile of risk of MI (P = 0.023). For men in the highest quartile of the MI prognostic score, testosterone therapy was associated with a reduced risk of MI (HR = 0.69; 95% CI = 0.53-0.92), whereas there was no difference in risk for the first (HR = 1.20; 95% CI = 0.88-1.67), second (HR = 0.94; 95% CI = 0.691.30), and third quartiles (HR = 0.78; 95% CI = 0.59-1.01). Conclusions: Older men who were treated with intramuscular testosterone did not appear to have an increased risk of MI. For men with high MI risk, testosterone use was modestly protective against MI.

Mukaila A. Raji

Papers

The Basis for Diminished Functional Recovery after Delayed Peripheral Nerve Repair

Hand grip strength and incident ADL disability in elderly Mexican Americans over a seven-year period

Handgrip Strength and Cognitive Decline in Older Mexican Americans

Relationship between frailty and cognitive decline in older Mexican Americans.

Risk of Myocardial Infarction in Older Men Receiving Testosterone Therapy