Early enteral nutrition in critically ill patients.

Malnutrition in the critically ill patient is associated with adverse outcomes such as increased morbidity, infectious processes, and length of stay. Alterations to the gastrointestinal system during critical illness can be devastating. Current evidence suggests that, in the presence of a functioning gut, initiating early enteral nutrition therapy (within 24-48 hours of intensive care unit admission) results in enhanced tissue repair, preservation of immune competence, and conservation of the integrity of gut flora. Recommendations for practice include development of a national nutrition support protocol for widespread use in the intensive care unit.