This prospective, blinded observational clinical study was aimed to determine the effect of hyperhydration and muscle loss measured by Bioelectrical impedance vector analysis (BIVA) on mortality. The aim was to compare hydratation parameters measured by BIVA: OHY, Extracellular Water (ECW) / Total Body Wate (TBW) and quadrant, vector length, phase angle (PA) with cumulative fluid balance (CFB) recording (input-output) in their ability in predicting mortality as the abilities of the prognostic markers PA (BIVA), Acute Physiology and Chronic Health Evaluation II (APACHE II - score) and presepsin (serum Cluster of Differentiation (CD) 14-ST). The investigators also compared BIVA nutritional indicators (SMM, fat) with BMI and laboratory parameters (albumin, prealbumin and C-reactive protein (CRP) inflammation parameters) in the prediction of mortality. An important goal was to evaluate the usability of the BIVA method in critically ill patients on extracorporeal circulation, to compare the impedance data of the extracorporeal membrane oxygenation (ECMO) and non-ECMO groups.
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Body Mass (physique) - Bioelectrical impedance analysis (BIA)
Timeframe: The first within 48 hours of admission, the second one week after admission and third before transport from the ICU
Body Mass (physique) - Phase Angle (PA)
Timeframe: The first within 48 hours of admission, the second one week after admission and third before transport from the ICU
Body Mass (physique) - BIVA vector analysis (Cole Cole graf)
Timeframe: The first within 48 hours of admission, the second one week after admission and third before transport from the ICU