Table 1.
Formulae to calculate daily caloric requirements (kcal day−1) in patients with burn injuries. TBSA, total body surface area.
| Formula | Calculation (kcal day−1) | Comments |
|---|---|---|
| Harris–Benedict | Men: 66.5 + 13.75 (weight in kg) + 5 (height in cm) – 6.76 (age in yrs) Women: 66 + 9.56 (weight in kg) + 1.85 (height in cm) – 4.68 (age in yrs) |
Multiplied by factor determined by burn size: <20% TBSA ×1.5 20–40% TBSA ×1.6 >40% TBSA ×1.7 |
| Toronto | –4343 + 10.5 (%TBSA) + 0.23 (caloric intake in last 24 h) + 0.84 (Harris–Benedict unadjusted) + 114 (temp in °C) – 4.5 (days after injury) | Can be adjusted by activity factor: Confined to bed: ×1.2 Minimal ambulation: ×1.3 Moderate activity: ×1.4 |
| Curreri | 25 (weight in kg) + 40 (%TBSA) | Can overestimate caloric needs |
| Hangang | 867.542–5.546 (age in yrs) + 13.297 (weight in kg) + 4.879 (% TBSA) – 9.844 (PBD) + 500.612 (V) | Adjusted for each post-burn day (PBD) and if mechanically ventilated (V=1 if ventilated, V=0 if not) |