Phase angle and standardized phase angle from bioelectrical impedance measurements as a prognostic factor for mortality at 90 days in patients with COVID-19: A longitudinal cohort study
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2022-11-30
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Cornejo-Pareja, Isabel
Vegas-Aguilar, Isabel M.
Garcia-Almeida, Jose Manuel
Bellido-Guerrero, Diego
Talluri, Antonio
Lukaski, Henry
Tinahones, Francisco J.
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Churchill livingstone
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Abstract
Background & aims: Severe acute COVID-19 has taken on pandemic proportions with growing interest in identification of prognostic factors for mortality. Standardized bioelectrical impedance (BI) phase angle (SPhA), which is PhA adjusted by age and sex, has been related to mortality in patients with several diseases but never investigated in COVID-19. Inflammation, a consequence of COVID-19 infection, affects fluid status (hydration) and can be identified with PhA. The aim of this study was to determine the predictive role of PhA on 90 days survival of adults with COVID-19.Methods: We studied 127 consecutive patients diagnosed with COVID-19. BI measurements determined with a 50 kHz phase-sensitive BI device, body composition parameters and laboratory markers were evaluated as predictors of mortality.Results: Non-surviving COVID-19 patients had significantly lower PhA and SPhA values (p
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Bioelectrical impedance, COVID-19, Phase angle, Survival analysis, Mortality, Body cell mass, Clinical characteristics, Normal values, Fat mass, Vector, Adult