Figure 3From: Development and current use of parenteral nutrition in critical care – an opinion paper Relationship between two commonly used equations and the value of energy expenditure. Indirect calorimetry study on day 3 shows that both equations overestimated and underestimated energy expenditure in an unpredictable manner. (A) Pre-enrollment target 25 to 30 kcal/kg actual body weight (BW): arrows show the relation between the calculated energy target used for enrollment (25 or 30 kcal/kg/day) and the measured energy expenditure that became the target used from day 4. (B) Target of the supplemental parenteral nutrition patients recalculated using an equation based on a corrected ideal body weight, age and gender [39], which was used in the Early Parenteral Nutrition Completing Enteral Nutrition in Adult Critically Ill Patients (EPaNIC) trial [40] (corrected ideal body weight, age and gender [34] + absolute maximal target of 2,880 kcal).Back to article page