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目的：探讨病毒性脑膜炎(病脑)，结核性脑膜炎(结脑)，化脓性脑膜炎(化脑)患儿脑脊液中ＮＯ含量及临床意义。方法：采用比色法测定病脑(１８例)，结脑(９例)，化脑(１０例)，对照组(１１例)脑脊液中ＮＯ浓度．结果：病脑，化脑，结脑脑脊液中ＮＯ浓度较对照组显著性升高，化脑脑脊液中ＮＯ浓度较病脑，结脑显著升高，差异均有显著意义，(Ｐ＜０．０１)．结论：ＮＯ参与了小儿中枢神经系统感染性疾病的病理生理过程，并可作为化脑诊断及脑膜炎鉴别诊断的客观参考指标。“,”Objective: To explore the clinical significance of nitric oxide (NO) in cerebrospinal fluid (CSF) in the patients with viral meningitis, tuberculosis meningitis, and purulent meningitis. Method: The CSF NO of 18 cases of viral meningitis, of tuberculosis, 10 of purulent meningitis and 11 of controls were determined by coloimetric method. Result: The NO concentration in patients with viral meningitis, tuberculosis meningitis and purulent meningitis was higher than that in controls. The NO concentration in pa...