肝功能衰竭是指患者因肝细胞功能损害而出现的肝性脑病和严重凝血功能障碍。迄今无特殊治疗 ,预后差。 1993年Ｏ’Ｇｒａｎｄｙ等根据黄疸至脑病发生的相距时间提出新的分类法 ,即 0～ 7天为超急性 ,8～ 2 8天为急性 ,2 9天～ 12周为亚急性肝衰竭。 1996年Ｗｉｌｌｉａｍｓ认为 Liver failure refers to patients with hepatic encephalopathy and severe coagulopathy that develop due to impaired hepatocyte function. So far no special treatment, the prognosis is poor. In 1993, O’Grandy et al. Proposed a new taxonomy based on the time between jaundice and encephalopathy, ie hyperacute 0 to 7 days, acute 8 to 28 days and subacute liver failure from 29 to 12 weeks. In 1996, Williams said