JPEN. Journal of parenteral and enteral nutrition
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JPEN J Parenter Enteral Nutr · Aug 2017
Comparative StudyApproximation of Resting Energy Expenditure in Intensive Care Unit Patients Using the SenseWear Bracelet: A Comparison With Indirect Calorimetry.
Indirect calorimetry (IC) is the gold standard for determining energy expenditure in patients requiring mechanical ventilation. Metabolic armbands using data derived from dermal measurements have been proposed as an alternative to IC in healthy subjects, but their utility during critical illness is unclear. The aim of this study was to determine the level of agreement between the SenseWear armband and the Deltatrac Metabolic Monitor in mechanically ventilated intensive care unit (ICU) patients. ⋯ The systematic bias and large variability of the SenseWear armband when compared with gas exchange measurements confer limited benefits over the Harris Benedict equation in determining caloric requirements of ICU patients.
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JPEN J Parenter Enteral Nutr · Aug 2017
Metabolic Requirement of Septic Shock Patients Before and After Liberation From Mechanical Ventilation.
This study identified the difference in energy expenditure and substrate utilization of patients during and upon liberation from mechanical ventilation. ⋯ Measured energy expenditure was higher during than upon liberation from mechanical ventilation. This could be the increase in work of breathing from the continuous positive pressure support, repeated weaning cycles from mechanical ventilation, and/or the asynchronization between patients' respiration and ventilator support. Future studies should examine whether more appropriately matching energy expenditure with energy intake would promote positive health outcomes.