Early diagnosis values of C-reactive protein and procalcitonin for children with bacterial infectious pneumonia
10.3969/j.issn.1673-4130.2015.11.047
- VernacularTitle:C 反应蛋白及降钙素原对儿童细菌感染性肺炎的早期诊断价值研究
- Author:
Qingfu LI
;
Wen FANG
;
Chengxin WANG
;
Lifan ZHANG
;
- Publication Type:Journal Article
- Keywords:
pneumonia;
procalcitonin;
C-reactive protein;
sputum culture
- From:
International Journal of Laboratory Medicine
2015;(11):1586-1588
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the early diagnosis value of C‐reactive protein (CRP) and procalcitonin (PCT ) for bacterial in‐fectious pneumonia of children .Methods A total of 101 children with bacterial infectious pneumonia ,64 children with non‐bacterial infectious pneumonia and 73 children with non‐infectious disease were selected in bacterial infectious pneumonia group ,non‐bacterial infectious pneumonia group and non‐infectious disease group respectively .Serum PCT and CRP levels were measured before treat‐ment in the three groups .With sputum culture results as gold standard for the diagnosis of bacterial infectious pneumonia ,the sensi‐tivity ,specificity ,positive predictive value ,negative predictive value ,Youden index and diagnostic accuracy of PCT ,CRP ,PCT /CRP series test and parallel test were calculated for bacterial infectious pneumonia diagnosis .Results The levels of PCT and CRP of children in bacterial infectious pneumonia group were significant higher than those of children in non‐bacterial infectious pneumonia group and non‐infectious disease group(P < 0 .05) .The sensitivity ,specificity ,positive predictive value ,negative predictive value , Youden index and diagnostic accuracy of PCT ( ≥ 0 .5 ng/mL as the best intercept point) for bacterial infectious pneumonia diagno‐sis were 0 .743 ,0 .719 ,0 .806 ,0 .639 ,0 .461 and 0 .733 .And the same values for PCT /CRP series test were 0 .604 ,0 .875 ,0 .884 , 0 .583 ,0 .479 and 0 .709 respectively .All the values were higher than those of children in non‐bacterial infectious pneumonia group and non‐infectious disease group except sensitivity .Conclusion The combination of PCT and PCT /CRP series test is ideal method for early diagnosis of bacterial infectious pneumonia with high sensitivity and specificity .
