Estimation Of Energy Requirements

Calculation of resting energy expenditure (REE) (Harris Benedict equation): Males: 66.47 ^ (13.75 x BW) ^ (5 x height) - (6.76 x age) Females: 655.1 ^ (9.56 x BW) ^ (1.85 x height) - (4.67 x age) The average REE is approximately 25 kcal/kg BW/day Stress factors to correct calculated energy requirement for hypermetabolism: Postoperative (no complications) 1.0 Long bone fracture 1.15-1.30 Cancer 1.10-1.30 Peritonitis/sepsis 1.20-1.30 Severe infection/polytrauma 1.20-1.40

Burns (= approxim. REE + % burned body surface area) 1.20-2.00 Corrected energy requirements (kcal/d) = REE x stress factor

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