血清降钙素原、C-反应蛋白和血沉联合检测在老年肺炎中的临床价值

目的探讨血清降钙素原（PCT）、C-反应蛋白（CRP）和血沉（ESR）在老年肺炎诊断、预后及疗效评价中的临床价值。方法对62例老年肺炎患者及52例健康老年人PCT、CRP、ESR检查指标进行比较。结果与对照组相比肺炎患者三项指标均明显升高，有显著性差异（P〈0．05）。PCT、CRP、ESR的诊断敏感性分别为90．3％、83．9％、80．6％，敏感性无统计学意义。PCT特异性为98．4％，显著高于CRP、ESR的特异性（79．0％、74．2％），有显著差异性。结论血清PCT、CRP、ESR的测定对老年肺炎有一定诊断价值，特别是PCT水平可以作为早期诊断老年肺炎的重要指标。

Clinical value of serum procalcitonin, C-reactive protein and erythrocyte sedimentation rate in the elder patients with pneumonia

Objective To investigate clinical value of the serum procalcitonin （PCT）, C- reactive protein（CRP） and erythrocyte sedimentation rate（ESR） in diagnosis, treatment and condi- tion assessment in the elder patients with pneumonia. Methods Make a comparison of serum PCT,CRP and ESR between 62 elder patients with pneumonia and 52 healthy counterparts. Results The serum PCT~CRP and ESR levels in eider patients with pneumonia group were higher than the control group, it presented significant difference （ P 〈 0.05 ）. The diagnostic sensitivity of PCT, CRP and ESR was 90.3% , 83.9% and 80.6% respectively. The specificity of PCT（ 98.4% ） was higher than CRP and ESR （ 79.0% vs 74. 2% ） , and it presented significant difference. Conclusions The serum PCT, CRP and ESR are very important in diagnosing the elder patients with pneumonia, especially the level of PCT is a important diagnostic index.