作者对8例成人慢性肝病伴有持久性门体脑病(PSE)者应用苯甲酸钠和/或苯乙酸钠每日10g,分次口服,作双盲交叉治疗。治疗前曾作常规治疗,其中3例仅采用饮食控制,2例饮食控制加新霉素,3例饮食控制加乳果糖。常规治疗的平均PSE指数为0.354±0.034,8例中7例血氨升高。应用苯甲酸 The authors of 8 cases of chronic liver disease in adults with persistent portal encephalopathy (PSE) who apply sodium benzoate and / or sodium phenylacetate 10g daily, sub-oral, double-blind cross treatment. Treatment was routinely treated, of which only 3 cases of diet control, 2 cases of dietary control plus neomycin, 3 cases of diet control plus lactulose. The average PSE index of routine treatment was 0.354 ± 0.034, and in 7 of 8 cases, the blood ammonia level increased. Application of benzoic acid