Back to basics: Estimating energy requirements for adult hospital patients

Predictive equations are a quick and non-invasive way to estimate a patient's energy requirements, and can be a useful tool when used appropriately. However, as with any tool, the skill and experience of the user will affect the quality of the result. This paper looks at the origins and limitations of some of the more commonly used equations. Considerations in their use and interpretation, such as the use of injury and activity factors, adjusting weight and non-protein calories, are also discussed.

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