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观察颅内感染与非感染的脑脊液（CSF）与血液的碱指标变化。颅内感染组33例患儿为观察组,除外中枢神经病变的10例普通患儿作对照观察。以血气分析的常规方法取CSF及股动脉血进行操作,分析结果,两组结果比较有明显的差异（P<0.05）。观察组的恢复期与对照组无明显差异（P>0.05）。正常时CSF与血的PH值不相关。而脑炎时CSF比血的PH值低。化脑与病脑的CSF的PH间无明显差异（P>0.05）,但当有意识障碍时,有明显差异（P<0.01）。CSF与血的PH检测能观察病情鉴别疾病。
To observe the change of alkaline index between intracranial infection and non-infected cerebrospinal fluid (CSF) and blood. 33 cases of intracranial infection group were observed group, except for 10 cases of central nervous disease in children as control. CSF and femoral arterial blood were taken by the conventional method of blood gas analysis. The results of the two groups were significantly different (P <0.05). The observation group recovery period and the control group no significant difference (P> 0.05). Normal CSF and blood PH value is not relevant. The encephalitogenic CSF when the blood PH value is low. There was no significant difference (P> 0.05) between the CSF of brain and brain CSF, but there was significant difference when there was disturbance of consciousness (P <0.01). CSF and blood PH detection can observe the disease identification disease.