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目的：探讨肝硬变患者的门静脉压力、肺动脉压力的变化及其与肝功能损害间的关系。方法：应用阻抗微分图，测定４７例肝硬变患者的门脉指数（ｈＤ／ｈＳ）、平均肺动脉压（ＰＰＡ）；将肝硬变患者的肝功能按ＣｈｉｌｄＰｕｇｈ分级（Ａ级１４例，Ｂ级２１例，Ｃ级１２例），并同时测定动脉血氧分压（ＰａＯ２）。结果：反映门静脉压力的参数（ｈＤ／ｈＳ）与腹水的发生率有关。ｈＤ／ｈＳ及ＰａＯ２参数在ＰＰＡ增高组与正常组间差异有显著性，且ｈＤ／ｈＳ与ＰＰＡ的升高与肝功能损害程度呈正相关。结论：阻抗微分图可以反映肝硬变患者的肝功能损害程度及门静脉压力、肺动脉压力的变化，可作为一项辅助诊断指标
Objective: To investigate the changes of portal pressure and pulmonary pressure in cirrhotic patients and its relationship with liver dysfunction. Methods: The impedance differential graph was used to determine the portal venous index (hD / hS) and mean pulmonary arterial pressure (PPA) in 47 patients with cirrhosis. The liver function of patients with cirrhosis was graded according to Child-Pugh classification (A grade: 14 cases, B grade in 21 cases, C grade in 12 cases), and mean arterial partial pressure of oxygen (PaO2). Results: Parameters reflecting portal pressure (hD / hS) were associated with the incidence of ascites. There was significant difference of hD / hS and PaO2 between high PPA group and normal group, and there was a positive correlation between hD / hS and PPA and liver dysfunction. Conclusion: The impedance differential graph can reflect the degree of liver damage and the changes of portal vein pressure and pulmonary artery pressure in patients with cirrhosis and can be used as an auxiliary diagnostic indicator