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Aims Chronic heart failure (CHF) is often a common comorbidity in critically ill patients admitted to the intensive care unit (ICU) and carries an extremely poor prognosis. The study aimed to investigate the relationship between the blood urea nitrogen to serum albumin ratio (BAR) and the prognosis of patients with CHF admitted to the ICU. Methods and resultsThis retrospective cohort study included 1545 critically ill patients with CHF as a diagnosed comorbidity admitted to the ICU deposited in the MIMIC-III database, of whom 90 day all-cause mortality was 27.6% (n = 427) and in-hospital mortality was 17.3% (n = 267). The results of multiple logistic regression analysis indicated that BAR is an independent risk factor for in-hospital mortality in critically ill patients with CHF [compared with BAR ≤ 0.83; 0.83

Aim This systematic review and meta-analysis aim to explore the effects of HMB on body composition in older adults. Finding Available evidence suggests that HMB supplementation in older adults can promote increased muscle mass but may not be effective in reducing fat mass. The results of subgroup analysis indicated that exercise might limit the effect of HMB supplementation in older people, but this did not indicate that exercise did not help the muscle mass and function of older people. Message This study not only illustrates that HMB supplementation is an effective way to improve sarcopenia in older people but also highlights the urgent need to develop rational exercise programs to meet the needs of older people.

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