甘露醇(ｍａｎｎｉｔｏｌ)属渗透性脱水剂,主要是使脑循环的阻力降低,氧的供应增加,脑缺氧获得改善,用甘露醇能使血浆渗透压升高,将组织中水分吸回到血浆,产生组织脱水,从而降低颅内压,被临床广泛应用。但随着临床使用药量的增加,不良反应日益多见。1　低颅压文献[1]报道1例女 Mannitol is an osmotic dehydrating agent, mainly to reduce the resistance of cerebral circulation, increase the supply of oxygen, improve the cerebral hypoxia, increase the osmotic pressure of the mannitol, draw the moisture in the tissue back to the plasma , Resulting in tissue dehydration, thereby reducing intracranial pressure, is widely used clinically. However, with the increase of clinical use of drugs, more and more adverse reactions. 1 low intracranial pressure literature [1] reported a case of female