一、代谢性脑病的定义和原因在意识障碍的原因中 ,除颅内病变外 ,还有由颅外病变而致者。颅外病变主要是由于脑神经细胞的代谢障碍引起机能低下。因为神经细胞的主要能量是葡萄糖和Ｏ2 ,所以低氧状态 ,低血糖 ,由此引发的脑循环障碍 (脱水、血压低下、心律不齐等 )所致的脑缺血 First, the definition and causes of metabolic encephalopathy In the reasons for disturbance of consciousness, in addition to intracranial lesions, there are caused by extracranial lesions. Extracranial lesions are mainly due to dysfunction of brain nerve cells caused by dysfunction. Because the main energy of nerve cells is glucose and O2, hypoxia, hypoglycemia, resulting cerebral circulation disorders (dehydration, hypotension, arrhythmia, etc.) caused by cerebral ischemia