下呼吸道感染的实验室诊断与临床意义

Laboratory diagnosis of lower respiratory tract infection and its clinical significance

下呼吸道感染(LRTI)是指终末气道、肺泡和肺间质的炎症,细菌、病毒、真菌、衣原体、支原体等病原微生物感染均可引起下呼吸道感染;降钙素原、C反应蛋白、β-防御素2、磷、白细胞计数与分类、血沉等对下呼吸道感染有一定的诊断价值。笔者对下呼吸道感染实验室早期诊断与临床意义进行综述。

Lower respiratory tract infection（ LRTI） refers to the terminal airway,alveoli and interstitial lung inflammation,which may be caused by infection of pathogenic microorganismsm,such as bacteria,viruses,fungus,chlamydia,mycoplasma,and the like. Procalcitonin,c-reactive protein and beta-defense element 2,phosphorus,WBC count and classification,blood sedimentation of the lower respiratory tract infection have certain diagnostic values. The author reviews the early laboratory diagnosis of LRTI and its clinical significance.