Abstract: 【Objective】 To explore the change of C-reactive protein(CRP) and the occurrence of extra pulmonary organ injury in the children with different titers of mycoplasma pneumoniae (MP) -IgM after MP infection. 【Methods】 300 cases with MP infection were divided into 3 groups according to the titers of MP-IgM,group A with titer of 1∶80,group B with titer of 1∶160 and group C with titer equal to or above 1∶320.The positive rate of CRP and the occurrence of extra pulmonary organ injury were retrospectively analysed in the different groups. 【Result】 Higher positive rate of CRP and also higher occurrence of extra pulmonary organ injury were observed in the group C compared with group A and B. 【Conclusion】 The determinations of CRP and the titer of MP-IgM are useful for early diagnosis,observation of the disease course and prediction of the prognosis of children with MP.

Key words: mycop lasma pneumoniae, MP antibody titer, C-reactive protein

摘要： 【目的】 观察肺炎支原体感染患儿MP-IgM不同滴度时的C反应蛋白变化及肺外脏器损害情况。 【方法】 回顾性分析300例肺炎支原体感染患儿,按MP-IgM滴度分为A组(1∶80),B组(1∶160),C组(≥1∶320),统计分析CRP阳性率和肺外脏器损害例数。 【结果】 MP-IgM滴度≥1∶320时,CRP阳性率升高,发生肺外脏器损害的机率明显升高。 【结论】 联合MP-IgM滴度和CRP检测对MP感染患儿的病情判断有很大作用,有利于及时诊断,合理治疗。

关键词: 肺炎支原体, MP-IgM滴度, C-反应蛋白