PH and HCO3- of parietal yenous branch were lower than in control group and cubital vein in the same group.

• 门脉高压症患者胃网膜右动、静脉胃壁支血氧分压差低于对照组，胃网膜右静脉压力高于对照组，胃壁支静脉血pH和HCO3-低于对照组和同组肘静脉血。