Editorial Energy Expenditure in the ICU

Malone provides an overview of assessing energy expenditure in the ICU.1 Malone’s article comple-ments two previous reviews in this journal regard-ing indirect calorimetry.2,3 The topics discussed include basic concepts in indirect calorimetry, appropriate measurement conditions, application of resting energy expenditure toward estimation of total energy expenditure, pitfalls and potential applications of the Fick equation, use of various predictive formulas, and indications for indirect cal-orimetry. It would be impractical to write an exhaustive review on indirect calorimetry as there are entire books dedicated to this subject. However, these three reviews1–3 from the journal would pro-vide the reader with a solid foundation in the under