患者男,81岁,因急性胃肠炎于1995年8月入院。该患入院前1天出现腹泻,入院当天腹泻稀水便数次,恶心,剧烈呕吐,并抽搐一次,轻度头痛。既往震颤麻痹病史。查体:体温37℃,血压13.3/10.7kPa,神志消醒表情淡漠,或侧鼻唇沟稍浅,咽部充血,心肺正常,左下腹压痛,走路慌张步态,无病理反射,头部 CT 检查:明显脑动脉硬化改变,左侧基底节区见一点状出血灶。分析出血原因:一是年龄大,有脑动脉硬化病理基础:二是剧烈呕吐引起血压升高,造成小肠支血管破裂出血.抽搐可能是出血原因,也可能是 Male, 81 years old, admitted to hospital in August 1995 for acute gastroenteritis. The patient had diarrhea one day before admission, and had diarrhea and water several times on the day of admission. He was nauseated, vomited violently and convulsions once with mild headache. History of Parkinsonism paralysis. Physical examination: body temperature 37 ℃, blood pressure 13.3 / 10.7kPa, consciousness awake expression indifference, or slightly lateral lip and groove, throat congestion, normal heart and lungs, left lower quadrant tenderness, walking panic gait, no pathological reflex, head CT Check: obvious changes in cerebral arteriosclerosis, the left basal ganglia see a little bit of hemorrhage. Analysis of bleeding causes: First, older, with pathological basis of cerebral arteriosclerosis: Second, severe vomiting caused by elevated blood pressure, resulting in rupture of the small intestine blood vessels bleeding. Twitch may be the cause of bleeding may also be