肝性脑病是并发于重症肝脏病的一个神经精神性综合征,原因复杂,可见于重型病毒性肝炎、药物性或中毒性肝炎、妊娠期急性脂肪肝,失代偿期肝硬变等急、慢性肝脏病。在重型病毒性肝炎时,脑病主要起因于急性或亚急性肝细胞衰竭,而在肝硬变时则有门-体静脉分流的作用。诱发因素可为麻醉剂与镇 Hepatic encephalopathy is a neuropsychiatric syndrome complicated by severe liver disease. The reasons are complex and can be seen in acute viral hepatitis, drug-induced or toxic hepatitis, acute fatty liver during pregnancy, decompensated cirrhosis, Chronic liver disease. In severe viral hepatitis, encephalopathy mainly results from acute or subacute hepatocyte failure, and in the cirrhosis there is the role of portal-venous shunts. The predisposing factor can be for narcotics and the town