Denver Health Medical Center institutional protocol for early enteral nutrition of severely injured patients. Adapted from: . Abbreviations: ABGA, arterial blood gas analysis; ATI, Abdominal Trauma Index; CBC, complete blood count; HR, heart rate; ETF, enteral tube feeding; IAP, intraabdominal pressure (bladder pressure); ISS, Injury Severity Score; MAR, medicine administration record; NCJ, needle catheter jejunostomy; PEG, percutaneous endoscopic gastrostomy; PRBC, packed red blood cells. * Monitoring of IAP for high risk patients with severe pelvic ring injuries, lumbar spine fractures, polytrauma with ISS > 17, hemorrhagic shock with > 6 units PRBC in 12 h. ** In massively injured patients (ISS>40, ATI>40, PRBC mass transfusions), administer low dose enteral feeding (15–30 ml/h) for the first 3 days due to anticipated intolerance to full-dose enteral feeding. Advance per protocol on the 4th day post injury.