C反应蛋白和降钙素原对颅脑损伤患者肺部感染的诊断价值

目的：探讨降钙素原（PCT ）和急性时相C反应蛋白（CRP）对颅脑损伤患者肺部感染的临床意义。方法选取该院重症学科2014年1～10月的63例重症颅脑损伤患者，分为感染组（n＝37）和非感染组（n＝26）。留取静脉血标本要在患者入住重症监护病房1 h内，观察指标有：体温（℃）、白细胞计数（WBC ，×109／L）、PCT、CRP。结果感染组各时段 PCT、CRP水平均高于非感染组，差异有统计学意义（P＜0．05）；PCT、CRP和PCT联合CRP诊断肺部感染灵敏度分别为78％、81％、81％。特异度方面，PCT联合CRP为77％，明显高于PCT （69％）和CRP（15％）。结论 PCT联合CRP的检测阳性率及特异度较高，可作为颅脑损伤患者继发肺部感染早期较特异和敏感指标。

The diagnostic value of CRP and PCT on pulmonary infection of patients with craniocerebral injury

Objective To investigate the clinical significance of procalcitonin and acute phase protein on pulmonary infection of patients with craniocerebral injury .Methods Totally 63 cases of severe craniocerebral injury patients treated in our hospital from January 2014 to October 2014 were divided into infection group(n=37) and non infection group(n=26) .Peripheral blood speci‐mens was collected within one hour patients′admission of ICU ,the observation index were:T(℃) ,WBC(× 109/L) ,PCT and CRP . Results The level of PCT and CRP of infection group in each period were higher than non infected group (P<0 .05);the diagnos‐tic sensitivity of PCT ,CRP and PCT combined CRP was 78% ,81% and 81% ,respectively ;the diagnostic specificity of PCT com‐bined CRP was 77% ,which was significantly higher than PCT (69% ) and CRP(15% ) .Conclusion The positive rate and specifici‐ty of PCT combined with CRP is high ,thus it could be used as specific and sensitive indexes for early secondary pulmonary infection in head injury patients .