肝衰竭是由多种因素引起肝细胞严重损害,导致其合成、分泌以及生物转化等功能发生严重障碍,出现以黄疸、凝血功能障碍、肝性脑病、腹水等为主要表现的一种临床综合征[1]。1肝衰竭诊断1.1急性肝衰竭急性起病,2周以内出现肝衰竭的临床表现。急性起病,在2周内出现以下表现。(1)极度乏力,并有明显厌食、腹胀、频繁恶心呕吐等严重消化道症状和/或腹水;(2)短期内黄疸进行性加深(血清总胆红素>171μmol/L或每 Hepatic failure is caused by a variety of factors that cause serious damage to liver cells, resulting in serious obstacles to its synthesis, secretion and biotransformation functions. A clinical syndrome characterized by jaundice, coagulation disorders, hepatic encephalopathy, and ascites has emerged [1]. 1 Diagnosis of liver failure 1.1 acute onset of acute liver failure, liver failure within 2 weeks of clinical manifestations. Acute onset, the following performance within 2 weeks. (1) severe fatigue, with severe gastrointestinal symptoms such as anorexia, abdominal distension, frequent nausea and vomiting and / or ascites; (2) progressive jaundice in the short term (serum total bilirubin> 171 μmol / L or per