患者,69岁。于1997年9月13日骑自行车时被汽车撞倒,伤后神志不清3h,急送我院,行头颅 CT平扫,结果提示:双额硬膜下积液,左顶后脑组织小片挫伤,右侧脑桥腹外侧一模糊的低密度区,直径约0.7cm。入院查体:昏睡状,双侧瞳孔1.5mm,光反应迟钝,颈有抵抗,左下肢肌力Ⅰ级,肌张力减弱,左膝反射减弱,感觉检查不合作,双侧巴氏征(+),伤前无任何神经系统受损表现,既往无高血压病史。2d后复查,表现右侧桥脑腹 Patient, 69 years old. On September 13, 1997 when riding a bicycle was knocked down by a car, unconsciousness after injury 3h, emergency hospital, line skull CT scan, the results suggest that: double subdural effusion, small left brain contusion, The right lateral pontine extravasal a fuzzy low density area, a diameter of about 0.7cm. Admission examination: Drowsiness, bilateral pupil 1.5mm, light response, neck resistance, left lower extremity muscle strength Ⅰ grade, weakened muscle tone, decreased left knee reflex, sensory check uncooperative, bilateral Pakistan’s sign (+ , Before the injury without any nervous system performance, no previous history of hypertension. After 2d review, the performance of the right pontine abdomen