Continuous resting energy expenditure measurement in ventilated critically ill children / 中华临床营养杂志

ABSTRACT

Objective To monitor the changes of resting energy expenditure in ventilated critically ill children,to compare the results of standard equations and indirect calorimetry (IC) in predicting energy expenditure,and to investigate the possible influence factors of the metabolic status of the critically ill children.Methods From September 2012 to September 2013,56 critically ill children on assisted ventilation and fitting the requirements of IC in pediatric intensive care unit of Shanghai Children's Medical Center were enrolled in this prospective study.IC measurements were performed using metabolic cart on day 1,4,7,10 after trachea intubation.General clinical data of these children were recorded.Results 130 IC measurements were performed in the 56 children.The measured resting energy expenditure (MREE) did not exhibit significant differences among day 1,4,7,and 10 (P =0.379).Although there were no significant differences between MREE and energy expenditure predicted with Schofield and WHO equations (P =0.917,P =0.995),the agreement was poor between the measured and predicted values (R2 =0.185,R2 =0.322).The metabolic status of the children on day 1 of ventilation was only correlated with age (P =0.000) and height (P =0.027),not with severity of underlying diseases or clinical outcomes.Conclusions MREE of IC method in ventilated critically ill children did not significantly change over time in this study.A poor agreement was observed between equationpredicted energy expenditure and MREE.IC measurement of resting energy expenditure is recommended for guiding individual nutritional support among critically ill children so as to improve clinical outcome.