Which of the following methods of estimating energy requirements in critically ill children is LEAST accurate when compared to resting energy expenditure measured by indirect calorimetry?

• A. World Health Organization Equations
• B. White Equation
• C. Schofield Equation
• D. Recommended Dietary Allowance RDA for energy

Answer: (D)

In critically ill children, energy needs are influenced by the stress of illness, fever, catabolism, and interventions, so the most accurate way to gauge them is to measure resting energy expenditure (REE) directly with indirect calorimetry. Predictive equations aim to approximate REE using factors like age and weight, and the World Health Organization, Schofield, and White equations are established pediatric tools that reflect growth and developmental needs rather than general deficiency prevention. The Recommended Dietary Allowance for energy, however, is a fixed target designed for healthy populations to prevent energy deficiency; it does not account for the dynamic metabolic changes of critical illness or the individual variability seen in these patients. Because of that mismatch with the actual metabolic state, the RDA for energy tends to be least accurate compared with indirect calorimetry measurements.