中文摘要：

营养不良易导致机体的免疫功能降低，从而使感染、相关并发症发生率明显增高，最终导致患者住院天数、住院费用及病死率增加。目前，营养评估已经在广泛的应用于肿瘤、肾病、老年病等学科，并起到很好的临床效果，在肝病方面也有应用，但大多集中在慢性肝病、肝硬化患者，在肝衰竭方面的应用相对较少。而在临床实践工作中，肝衰竭的患者往往合并营养不良，且需要进行营养干预。因此，对于肝衰竭患者，早期对其营养状况进行判断、干预，并遵循个体化的营养状况特点，已逐渐成为治疗肝衰竭患者的重要环节。

英文摘要：

Malnutrition can reduce the body＇s immune function, and significantly increased higher incidence of infection, related complications, leading to higher hospitalization days, hospitalization expenses and mortality. At present, the nutrition assessment not only has been widely used in tumor disease; kidney disease; geriatric disease and other disciplines, but also concentrated in the patients with chronic liver disease. However, the clinic application of nutrition assessment in liver failure is limited. In the clinical practice work, malnutrition commonly comes with the course of patients with liver failure, and need to treatment. Therefore, the early judgment on their nutritional status, and follow the nutrition characteristics of individualized has gradually become an important part of the treatment of liver failure patients.