Stress-factor Energy

REE × activity factor × stress factor, with optional fever correction. A pragmatic estimate when indirect calorimetry isn’t available.

Reviewed by Pooja V. Menon, Registered Dietitian · Last updated

Add 13 % per °C above normal (Elwyn 1980).

Equations

  • Mifflin–St Jeor:
    Men: 10 × kg + 6.25 × cm − 5 × age + 5
    Women: 10 × kg + 6.25 × cm − 5 × age − 161
  • Harris-Benedict (revised 1984):
    Men: 88.362 + 13.397 × kg + 4.799 × cm − 5.677 × age
    Women: 447.593 + 9.247 × kg + 3.098 × cm − 4.330 × age

Sources

  • Long CL, Schaffel N, Geiger JW, Schiller WR, Blakemore WS. Metabolic response to injury and illness: estimation of energy and protein needs from indirect calorimetry and nitrogen balance. JPEN 1979;3:452–6.
  • Elwyn DH. Nutritional requirements of adult surgical patients. Crit Care Med 1980;8:9–20.
  • Mifflin MD, St Jeor ST, Hill LA, et al. A new predictive equation for resting energy expenditure in healthy individuals. Am J Clin Nutr 1990;51:241–7.
  • Roza AM, Shizgal HM. The Harris Benedict equation reevaluated: resting energy requirements and the body cell mass. Am J Clin Nutr 1984;40:168–82.
  • Singer P, Blaser AR, Berger MM, et al. ESPEN guideline on clinical nutrition in the intensive care unit. Clin Nutr 2019;38:48–79.