Clinical Application Value of NLR in the Etiology Diagnosis of Community-Acquired Pneumonia

doi:10. 3969 / j. issn. 2096-2266. 2021. 08. 021

Abstract

Abstract: Objective: To explore the clinical application value of neutrophil-lymphocyte ratio (NLR) in the etiological diagnosis
of community-acquired pneumonia. Methods: The routine blood indices, CRP and the concentration of PCT were retrospectively
analyzed in 47 patients with streptococcus pneumonia (SP), 50 patients with mycoplasma pneumonia (MP) and 64 patients with viral
pneumonia (VP) within 48 hours after admission to hospital. NLR <5 was selected as cut-off value, and the results were analyzed by
statistical methods. Results: Compared with those in MP group and VP group, the patients in SP group had higher levers of white
blood cell counts, NLR, NLR<5, and PCT, the differences were statistically significant (P<0.05). NLR<5 had the best diagnostic
efficacy in distinguishing between SP and MP (AUC=0.92), VP (AUC=0.74), and non-SP (AUC=0.84), respectively. Conclusion:
NLR can distinguish bacterial infection from non-bacterial infection in the early stages. At the level of NLR<5, non-bacterial infection
such as mycoplasma or virus should be considered, which can better guide clinical medication.

Key words: community-acquired pneumonia, neutrophil-lymphocyte ratio, C-reactive protein, procalcitonin

CLC Number:

R563.1

Li Fuxing, He Yingchun, Yan Ping, Wang Li, Fan Yujuan, Zhao Weidong. Clinical Application Value of NLR in the Etiology Diagnosis of Community-Acquired Pneumonia[J]. Journal of Dali University, 2021, 6(8): 88-92.

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