危重内、外科疾病住院患者常伴有高血糖症。危重患者血糖适当升高是有益的,如不需要胰岛素的脑摄取葡萄糖获得能量供应。但危重疾病出现高血糖并不是生理或良性状况,是疾病危重状态的表现之一。血糖升高的程度可能是疾病危重程度的一种表现,或是导致危重疾病死亡增加的原因。有人做的Leuven强化胰岛素治疗的研究,结果显示强化胰岛素治疗可减少ICU患者的病死率、住院天数及并发症发生 In-critically ill, surgical patients are often hospitalized with hyperglycemia. It is beneficial for critically ill patients to have an appropriate elevation of blood glucose, such as glucose intake in the brain that does not require insulin. However, the emergence of critically ill hyperglycemia is not a physiological or benign condition and is one of the manifestations of a critically ill condition. The extent of the increase in blood sugar may be a manifestation of the severity of the disease or the cause of increased death from critically ill diseases. Someone who did intensive Leuven Insulin treatment showed that intensive insulin therapy reduced mortality, length of stay, and complications in ICU patients