Early Enteral Nutrition in Severe Acute Pancreatitis

Naso-gastro-jejunal tube will be set up by X-ray within 24 hours of admission. The distal end of the feeding tube would be placed at the remote end of Treitz ligament, and verified by X-ray. • After catharsis, Standard enteral nutrition liquid regimen will be used step by step. Patients are targeted to receive calories for 25 kcal/kg/day. nutrition form: short peptide ,1 kcal/ml,target 200k kcal/day

Naso-gastro-jejunal tube will be set up by X-ray within 24 hours of admission. * The distal end of the feeding tube would be placed at the remote end of Treitz ligament, and verified by X-ray. * After catharsis, Only Normal Saline were given through nasojejunal tube until 2 or more followed requirements were meted (mean arterial pressure≥65mmHg; oxygenation index≥ 300;APCHEII≤8; intra-abdominal pressure \<20mmHg).Then Standard enteral nutrition liquid regimen (Peptisorb Liquid) will be used step by step. * Patients are targeted to receive calories for 25 kcal/kg/day.