What percentage of kcals should come from carbohydrates in infant parenteral nutrition for a stable patient?

• A. 20-30%
• B. 45-50%
• C. 60-70%
• D. 80-90%

Answer: (B)

Determining the right energy mix in infant parenteral nutrition. Carbohydrates in PN provide readily available glucose energy, and for a stable infant the goal is to deliver roughly half of total kcal from dextrose. Targeting about forty-five to fifty percent of energy from carbohydrates allows enough glucose to meet growth and metabolic needs while leaving ample calories from lipids to supply essential fatty acids and overall energy. If carbohydrate intake is too high, there’s a greater risk of hyperglycemia and increased CO2 production; if it’s too low, energy deficits can develop and ketosis may occur. Therefore, for a stable infant, the mid-range of carbohydrate energy—about 45-50% of total kcal—is the best balance. Monitor glucose and adjust as needed, while ensuring lipids continue to provide the remaining energy and essential fatty acids.