Energy expenditure in critically ill patients estimated by population-based equations indirect calorimetry and CO2-based indirect calorimetry

摘要

BackgroundIndirect calorimetry (IC) is the reference method for measurement of energy expenditure (EE) in mechanically ventilated critically ill patients. When IC is unavailable, EE can be calculated by predictive equations or by VCO2-based calorimetry. This study compares the bias, quality and accuracy of these methods.