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目的探讨血清降钙素原(PCT)、C-反应蛋白(CRP)、白细胞计数(WBC)在下呼吸道感染中的诊断价值。方法本研究共纳入62例下呼吸道感染者,将患者分为细菌感染组32例,非细菌感染组30例,正常人40例,分别监测患者入院时PCT、CRP、WBC,并统计分析三者的阳性率、敏感度、特异性来说明其在老年下呼吸道感染中的价值。结果三组入院时血清PCT、CRP、WBC结果两组比较,细菌感染组与非感染组、正常组有明显差别,但非细菌感染与正常组无差别。结论细菌感染组中的PCT、WBC、CRP明显高于非细菌感染组,且三种中间PCT的灵敏度及特异度都最高。
Objective To investigate the diagnostic value of serum procalcitonin (PCT), C-reactive protein (CRP) and white blood cell count (WBC) in lower respiratory tract infection. Methods A total of 62 patients with lower respiratory tract infection were enrolled in this study. The patients were divided into bacterial infection group (32 cases), non-bacterial infection group (30 cases) and normal control group (40 cases). The PCT, CRP and WBC were monitored and statistically analyzed The positive rate, sensitivity and specificity of its value in elderly patients with lower respiratory tract infection. Results The serum PCT, CRP and WBC results of the three groups were significantly different between the two groups when compared with the non-infected group and the normal group, but no difference was found between the non-bacterial group and the normal group. Conclusion The PCT, WBC and CRP in bacterial infection group were significantly higher than those in non-bacterial infection group, and the sensitivity and specificity of the three intermediate PCTs were the highest.