Two-hour indirect calorimetry measurement as a predictor of 24-hour energy expenditure in critically ill surgical patients: A longitudinal study.

Periodic measurements of EE can differ slightly when performed in various hours of the day, but the error range is small and may not necessarily have a clinical impact. When continuous IC is not available, a 2-hour EE measurement between 18:00-19:59 can serve as a reasonable alternative. This article is protected by copyright. All rights reserved.