Objective: To study the effects of vasoactive intestinal peptide (VIP) on blood stream of portal collateral vessels in patients with cirrhosis.

Objective to study the effect of portal vein occlusion on intestinal mucosa barrier in rats and the protection of ulinastatin to the injury, to present the experimental data for the clinical surgery.

AIM: to observe the relationship among acute portal hypertension, intestinal endotoxemia and hepatic microcirculatory disturbance.