The daily energy requirements of the individual are highly variable. They are dependent on numerous factors e.g.:
The energy input of the diet can be roughly calculated using the following algorithm; it is useful for quantifying the nutritional support needed for the hospitalized patient:
Practically, patients with uncomplicated disease processes require around 30 kcal/kg/day. Those exceptionally stressed e.g. multiple trauma victims, extensive operation, major sepsis, may require up to 40 kcal/kg/day.
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