低血糖症是指由多种原因引起的血糖低于2.78mmol/L(50mg/dl),临床上产生以交感神经过度兴奋及脑功能障碍为特征的综合征。其中约70％为原因不明功能性低血糖症,其次为胰岛素瘤及肝源性低血糖症等。严重的低血糖可致昏迷,称低血糖昏迷(亦称低血糖脑病)。若及早给予葡萄糖等治疗,可使之迅速缓解,否则可引起脑的实质性损害,甚至引起死亡。故临床上早期识别,诊断和治疗是至关重要的。 Hypoglycemia refers to the blood glucose caused by a variety of causes is less than 2.78mmol / L (50mg / dl), clinical syndrome characterized by sympathetic overdrive and brain dysfunction. About 70% of them are unknown functional hypoglycemia, followed by insulinoma and hepatic hypoglycemia. Severe hypoglycemia can cause coma, said hypoglycemic coma (also known as hypoglycemic encephalopathy). If early treatment of glucose, can make it quickly relieve, or can cause substantial brain damage, and even cause death. Therefore, clinical early identification, diagnosis and treatment is crucial.