Introduction
Sarcopenia, characterized by the progressive loss of muscle mass and function, is exacerbated in older adults with cardiovascular diseases. In hospitalized older adults, quick and practical questionnaires such as the SARC-F and SARC
CalF are important for early risk screening and help guide effective interventions.
Objective
To identify the prevalence of sarcopenia and sarcopenia risk, and to assess the diagnostic accuracy of the SARC-F and SARC
CalF questionnaires in screening for probable and confirmed sarcopenia.
Methods
Cross-sectional study with older adults admitted to the emergency department of a public hospital for cardiovascular diseases between January and September 2023. Sarcopenia was assessed based on muscle strength (handgrip dynamometry), muscle mass (calf circumference), and physical performance (gait speed). The risk of sarcopenia was estimated using the SARC-F and SARC
CalF questionnaires. Statistical analyses included Mann-Whitney U tests and ROC curves.
Results
In a sample of 160 participants, the prevalence of sarcopenia was 21.3%. The SARC
CalF identified 42.5 % of older adults at risk and the SARC-F 32.5 %. The SARC
CalF demonstrated greater accuracy in identifying confirmed sarcopenia (AUC=0.85 [95%CI: 0.79, 0.91]) and low muscle strength (AUC=0.71 [95%CI: 0.62, 0.79]) when compared to the SARC-F.
Conclusion
The prevalence of sarcopenia was lower than expected in the study population. The SARC
CalF was better able to identify older adults at risk of sarcopenia and demonstrated greater diagnostic accuracy than the SARC-F in detecting probable and confirmed sarcopenia, standing out as a more effective screening tool for this population.
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