The physiological and hormonal responses to the stress of an acute brain injury, like other critical illnesses, result in a redistribution of fat, protein, and glycogen stores. There is also evidence that brain injury may lead to more severe metabolic derangements compared with those associated with critical illness affecting other organs.1 This hypermetabolic response can lead to a undernourished state and impair the normal reparative processes essential for recovery if the patient does not receive adequate nutritional supplementation.
Badjatia N, Elkind MSV. Nutritional Support After Ischemic StrokeMore Food for Thought. Arch Neurol. 2008;65(1):15-16. doi:10.1001/archneurol.2007.5