Compared the cirrhosis patients with different portal vein bore, with or without nevus araneus or with different Child-Pugh, the difference in PaO_ 2 and SaO_ 2 were significant, respectively ( All P < 0.01). 肝硬化患者不同门静脉内径、有无蜘蛛痣、不同肝功能分级的PaO2和SaO2值比较,均有极显著差异(P<0.01)。