The goal of this observational study is to evaluate whether thigh muscle mass and muscle wasting are associated with mortality in patients who visit the emergency department. The main questions it aims to answer are: * Is thigh muscle mass associated with mortality in patient who visit the emergency department? * Does muscle wasting exist during staying in the emergency department? * Is muscle wasting associated with mortality in patient who visit the emergency department? Participants will be evaluated for serial thigh muscle mass using point-of-care ultrasound at the emergency department.
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28 day mortality
Timeframe: 28 days after study enrollment