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脑脊液(CSF)充满蛛网膜间的蛛网膜下腔,主要由脑室内的脉络丛产生,为无色透明的液体。成人脑脊液(CSF)总量约为125ml,其压力为70～80mmH_2O(相当于40～50滴/分)。当某些疾病(如脑炎、脑膜炎、脑血管病、脑瘤等)可使脑脊液压力升高,临床上常可根据脑脊液压力的测定来对这些疾病作出诊断。 临床上当某些病人有明显的颅高压或颅内有活动性出血等,为避免其颅压迅速下降而形成脑疝,一般不做腰穿。但有些疾病如不进行此项检查就无法诊断,故可在先用脱水剂甘露醇减低颅压后行腰穿术,此时所测得的脑脊液(CSF)压力非原压力,那么如何估计病人脑脊液(CSF)的实际压
Cerebrospinal fluid (CSF) filled the arachnoid subarachnoid space, mainly produced by the choroid plexus in the ventricle, a colorless and transparent liquid. The total amount of adult cerebrospinal fluid (CSF) is about 125 ml, with a pressure of 70-80 mmH2O (equivalent to 40-50 drops / minute). When certain diseases (such as encephalitis, meningitis, cerebrovascular disease, brain tumor, etc.) can increase cerebrospinal fluid pressure, clinically based on the determination of cerebrospinal fluid pressure to make a diagnosis of these diseases. Clinically, some patients have significant intracranial hypertension or intracranial bleeding, in order to avoid the rapid decline in intracranial pressure and the formation of herniation, generally do not wear lumbar. However, if some diseases can not be diagnosed without this test, it can reduce the intracranial pressure with dehydration agent mannitol before lumbar surgery, measured at this time of cerebrospinal fluid (CSF) pressure is not the original pressure, then how to estimate the patient The actual pressure of cerebrospinal fluid (CSF)