感染性疾病患儿血清降钙素原、CRP及WBC的变化及临床意义

Clinical significance of serum levels of procalcitonin,C-reactive protein and white blood cell count in children with infectious diseases

目的探讨不同病原感染性疾病患儿血清降钙素原(PCT)、C反应蛋白(CRP)及白细胞计数(WBC)的变化及诊断价值。方法回顾性分析2013年6月至2014年5月该院儿科确诊的94例感染性患儿,根据病原体检测结果分为细菌感染组36例,支原体感染组28例,病毒感染组30例,于入院时检测患儿血清PCT、CRP及WBC水平并进行统计学分析。结果细菌感染组患儿血清PCT、CRP及WBC分别为(2.41±0.94)ng/mL、(47.91±18.26)mg/L及(13.18±6.03)×109/L,明显高于支原体感染组及病毒感染组,差异有统计学意义(F=133.4,F=60.1,F=8.5,P<0.05);在细菌性感染诊断中PCT灵敏度及特异度分别为92.11%及91.05%,阳性、阴性预测值为89.84%及94.01%均明显高于CPR及WBC。以支原体感染组为对照,PCT、CRP及WBC在诊断细菌性感染ROC曲线下面积分别为0.816、0.728及0.614。结论血清PCT对于鉴别细菌性感染中有较高的诊断价值,值得推广应用。

Objective To explore the diagnostic value of serum procalcitonin ,C‐reactive protein and white blood cell count in children with different diseases .Methods Retrospective analysis 94 cases of pathogenic infectious children from June 2013 to May 2014 in our hospital ,according to the results of pathogen detection was divided into bacterial infection 36 cases ,mycoplasma infec‐tion group 28 cases ,30 cases of viral infection ,detection and analysis serum PCT ,CRP and WBC levels .Results Bacterial infection group serum PCT ,CRP and WBC were (2 .41 ± 0 .94)ng/mL ,(47 .91 ± 18 .26)mg/L and (13 .18 ± 6 .03) × 109/L ,significantly higher than the mycoplasma infection and viral infection group (F=133 .4 ,F=60 .1 ,F=8 .5 ,P<0 .05);diagnosis of bacterial in‐fections ,PCT sensitivity and specificity were 92 .11% and 91 .05% ,positive and negative predictive value of 89 .84 % and 94 .01%were significantly higher than CPR and WBC ,Mycoplasma infection as the control group ,PCT ,CRP and WBC in the diagnosis of bacterial infections ,the area of under the ROC curves were 0 .816 ,0 .728 and 0 .614 ,respectively .Conclusion Serum PCT for the i‐dentification of bacterial infections has a high diagnostic value ,worth generalizing and applying .