本文报告97例患者的205份脑脊液(CSF)标本,用气-液色谱法(Gas-liquid chromatography)检查了乳酸的浓度。97例中,对照组25例(非中枢神经系统感染),无菌性(病毒性)脑膜炎26例,细菌性(化脓性)脑膜炎27例,脑脓肿1例,结核性脑膜炎5例,球孢子菌性脑膜炎3例,新型隐球菌性脑膜炎3例,狂犬病1例,脑膜旁灶性感染4例,脑血管意外2例。结果:治疗前,所有急性细菌性、结核性或隐球菌性脑膜炎患者CSF的乳酸浓度均>35mg/100ml。细菌性脑膜炎治疗后第1天仍高,第3天已缓慢下 This article reports 205 CSF samples of 97 patients and examines lactic acid concentrations using gas-liquid chromatography. Of the 97 patients, 25 were in the control group (non-central nervous system infection), 26 were aseptic (viral) meningitis, 27 were bacterial (purulent) meningitis, 1 brain abscess, 5 were tuberculous meningitis , 3 cases of coccidioidomycosis, 3 cases of new cryptococcal meningitis, 1 case of rabies, 4 cases of focal meningeal infection and 2 cases of cerebrovascular accident. Results: All patients with acute bacterial, tuberculous or cryptococcal meningitis had lactate concentrations> 35 mg / 100 ml prior to treatment. Bacterial meningitis remained high on day 1 and slowly on day 3