Keywords
Malnutrition
Obesity paradox
Hospitalization
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Abstract
Objective: To evaluate body composition, presence of myopenia and myosteatosis in an overweight hospitalized population and identify predictors for long hospitalization. Methods: Observational, longitudinal study, carried out with overweight and obese patients admitted to a Brazilian public tertiary institution. Sociodemographic, clinical and nutritional variables were collected. Hospitalization ≥16 days was considered long. Body composition was defined by computed tomography images, obtaining the areas and indices of skeletal muscle mass (SMM) and adipose tissues; and, presence of myopenia and myosteatosis. Results: The sample consisted of 158 patients and long hospital stays were observed in 43.0%. The frequency of myopenia and myosteatosis was 24.7% and 63.3%, respectively. Patients with myosteatosis and those who had both myopenia and myosteatosis were mostly female, older, neoplastic, at risk for sarcopenia, nutritional risk and malnutrition; in addition to having less MME and greater amounts of adipose tissue. Only myosteatosis was considered an independent risk factor for long hospitalization, increasing the probability of hospitalization ≥16 days by five times. Conclusion: Myosteatosis is common in overweight hospitalized patients, being an independent risk factor for long hospital stay.
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