检验医学 ›› 2021, Vol. 36 ›› Issue (3): 275-280.DOI: 10.3969/j.issn.1673-8640.2021.03.009

• 临床应用研究∙论著 • 上一篇    下一篇

中性粒细胞/淋巴细胞比值与新型冠状病毒肺炎短期不良预后的相关性

王斌   

  1. 华中科技大学同济医学院附属同济医院检验科,湖北 武汉 430030
  • 收稿日期:2020-04-21 出版日期:2021-03-30 发布日期:2021-03-30
  • 作者简介:王斌,女,1972年生,硕士,副主任技师,主要从事临床检验工作。

Correlation between neutrophil-to-lymphocyte ratio and short-term poor prognosis in patients with corona virus disease 2019

WANG Bin   

  1. Department of Clinical Laboratory,Tongji Hospital,Tongji Medical College,Huazhong University of Science and Technology,Wuhan 430030,Hubei,China
  • Received:2020-04-21 Online:2021-03-30 Published:2021-03-30

摘要:

目的 探讨中性粒细胞/淋巴细胞比值(NLR)对新型冠状病毒肺炎(COVID-19)短期不良预后的预测价值。方法 选取2020年1月28日—2月20日华中科技大学同济医学院附属同济医院收治的302例COVID-19患者作为COVID-19组,以2020年1月7日57名健康体检者作为对照组。COVID-19患者根据入院时临床表现分为非重症组(218例)和重症组(84例);根据院内短期预后情况分为生存组(269例)和病亡组(33例)。收集所有患者临床资料以及入院时白细胞(WBC)计数、中性粒细胞绝对数(NEUT#)、淋巴细胞绝对数(LYMPH#)、血小板(PLT)计数、高敏C反应蛋白(hs-CRP)、降钙素原(PCT)等炎性反应指标检测结果,计算中性粒细胞/淋巴细胞比值(NLR)、血小板/淋巴细胞比值(PLR)。结果 COVID-19组与对照组比较,NEUT#、LYMPH#、PLT计数、NLR、PLR差异均有统计学意义(P<0.05)。重症组男性比例、高血压比例、年龄、WBC计数、NEUT#、NLR、PLR、hs-CRP和PCT均高于非重症组(P<0.05),LYMPH#和PLT计数均低于非重症组(P<0.05)。病亡组男性比例、年龄、WBC计数、NEUT#、NLR、PLR、hs-CRP和PCT均高于生存组(P<0.05),院内生存时间、LYMPH#和PLT计数均低于生存组(P<0.05)。多因素Logistic回归分析结果显示,男性、年龄、NEUT#和NLR均是COVID-19患者短期不良预后的独立危险因素,PLT计数是独立保护因素。受试者工作特征(ROC)曲线分析结果显示,NLR预测COVID-19患者院内死亡的曲线下面积(AUC)为0.819[95%可信区间(CI)为0.756~0.882,P<0.001],最佳临界值为6.18时,其敏感性、特异性、阳性预测值、阴性预测值分别为79.63%、68.95%、35.88%、93.96%。结论 NLR与COVID-19患者短期不良预后的发生密切相关,是院内死亡的独立预测因素。

关键词: 新型冠状病毒肺炎, 中性粒细胞/淋巴细胞比值, 预后, 死亡

Abstract:

Objective To investigate the predictive value of neutrophil/lymphocyte ratio(NLR)on the short-term poor prognosis in patients with corona virus disease 2019(COVID-19). Methods A retrospective analysis was conducted in 302 patients with COVID-19 at Tongji Hospital,Tongji Medical College,Huazhong University of Science and Technology from January 28,2020 to February 20,2020. Totally,57 healthy subjects were enrolled as control group on January 7,2020. According to the clinical manifestations on admission,the patients were classified into non-severe group(218 cases) and severe group(84 cases). According to in-hospitalization prognosis,the patients were classified into survival group(269 cases) and non-survival group(33 cases). Clinical data and inflammatory indicators,including white blood cell(WBC) count,the absolute value of neutrophil count(NEUT#),the absolute value of lymphocyte count(LYMPH#),platelet(PLT) count,high-sensitivity C-reactive protein(hs-CRP),procalcitonin(PCT),were collected on admission. NLR and platelet/lymphocyte ratio(PLR)were calculated. Results There were statistical differences in terms of NEUT#,LYMPH#,PLT count,NLR and PLR between COVID-19 group and healthy control group(P<0.05). On admission in the severe group,male proportion,patient proportion of hypertension,age,WBC count,NEUT#,NLR,PLR,hs-CRP and PCT were higher than those in the non-severe group(P<0.05),while LYMPH# and PLT count were lower than those in the non-severe group(P<0.05). In the non-survival group,male proportion,age,WBC count,NEUT#,NLR,PLR,hs-CRP and PCT were higher than those in the survival group(P<0.05),while the in-hospital survival time,LYMPH# and PLT count were lower than those in the survival group(P<0.05). Multivariate Logistic regression analysis showed that male,age,NEUT# and NLR were independent risk factors for short-term prognosis in COVID-19 patients. Meanwhile,PLT count was the independent protective factor. The receiver operating characteristic(ROC)curve analysis indicated the area under curve(AUC)of NLR was 0.819 [95% confidence interval(CI) 0.756-0.882,P<0.001). When the cut-off value was 6.18,the sensitivity,specificity,positive predictive value and negative predictive value were 79.63%,68.95%,35.88% and 93.96%,respectively. Conclusions NLR is closely related to the occurrence of short-term poor prognosis in patients with COVID-19 and is an independent predictor for in-hospital death.

Key words: Corona virus disease 2019, Neutrophil/lymphocyte ratio, Prognosis, Death

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