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中性粒细胞与淋巴细胞比值和淋巴细胞与 C 反应蛋白比值与 COVID-19 相关死亡率的关系。

Association of neutrophil-to-lymphocyte and lymphocyte-to-C-reactive protein ratios with COVID-19-related mortality.

机构信息

Department of Internal Medicine.

Endocrine Diseases Medical Research Unit, Specialty Hospital, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Mexico City, Mexico.

出版信息

Gac Med Mex. 2020;156(6):553-558. doi: 10.24875/GMM.M21000481.

DOI:10.24875/GMM.M21000481
PMID:33877103
Abstract

INTRODUCTION

Neutrophil-to-lymphocyte (NLR) and lymphocyte-to-C-reactive protein (LCR) ratios are used to predict severity and mortality in various infections.

OBJECTIVE

To establish the best NLR and LCR cutoff point to predict mortality in patients hospitalized for COVID-19 in Mexico.

METHOD

Analytical cross-sectional study of patients hospitalized for severe COVID-19 in a specialty hospital.

RESULTS

Out of 242 analyzed patients, 34 % died. The deceased subjects were older (62 vs. 51 years; p < 0.001), had a higher prevalence of > 10 years with systemic arterial hypertension (59.4 vs. 45.1 %, p = 0.022), as well as a higher NLR (17.66 vs. 8.31, p < 0.001) and lower LCR (0.03 vs. 0.06, p < 0.002) with regard to those who survived. The cutoff points to predict mortality were NLR > 12 and LCR < 0.03. The combination of NLR/LCR had a sensitivity of 80 %, specificity of 74 %, positive predictive value of 46.15 %, negative predictive value of 93.02 % and an odds ratio of 11.429 to predict mortality.

CONCLUSION

NLR > 12 and LCR < 0.03 are useful biomarkers to evaluate the risk of mortality in Mexican patients with severe COVID- 19.

INTRODUCCIÓN: Los índices neutrófilo/linfocito (INL) y linfocito/proteína C reactiva (ILR) se usan para predecir severidad y mortalidad en diversas infecciones.

OBJETIVO

Establecer en México el mejor punto de corte de INL e ILR para predecir la mortalidad en pacientes hospitalizados por COVID-19.

MÉTODO: Estudio transversal analítico de pacientes hospitalizados por COVID-19 grave en un hospital de especialidades.

RESULTADOS

Falleció 34 % de 242 pacientes analizados. Los sujetos fallecidos tenían mayor edad (62 versus 51 años, p < 0.001), mayor prevalencia de hipertensión arterial sistémica > 10 años (59.4 versus 45.1 %, p = 0.022), así como INL más alto (17.66 versus 8.31, p < 0.001) e ILR más bajo (0.03 versus 0.06, p < 0.002) respecto a quienes sobrevivieron. Los puntos de corte para predecir mortalidad fueron INL > 12 e ILR < 0.03. La combinación de INL e ILR tuvo sensibilidad de 80 %, especificidad de 74 %, valor predictivo positivo de 46.15 %, valor predictivo negativo de 93.02 % y razón de momios de 11.429 para predecir la mortalidad.

CONCLUSIÓN: INL > 12 e ILR < 0.03 son biomarcadores útiles para evaluar el riesgo de mortalidad en pacientes mexicanos con COVID-19 grave.

摘要

简介

中性粒细胞与淋巴细胞(NLR)和淋巴细胞与 C 反应蛋白(LCR)比值可用于预测各种感染的严重程度和死亡率。

目的

确定墨西哥 COVID-19 住院患者死亡预测的最佳 NLR 和 LCR 截止值。

方法

对一家专科医院严重 COVID-19 住院患者进行分析性横断面研究。

结果

在分析的 242 例患者中,34%死亡。死亡患者年龄较大(62 岁比 51 岁;p<0.001),患有 >10 年系统性动脉高血压的比例更高(59.4%比 45.1%,p=0.022),NLR(17.66 比 8.31,p<0.001)更高,LCR(0.03 比 0.06,p<0.002)更低。与存活者相比,死亡患者的 NLR 和 LCR 水平更高。预测死亡率的截断值为 NLR>12 和 LCR<0.03。NLR/LCR 联合检测的敏感性为 80%,特异性为 74%,阳性预测值为 46.15%,阴性预测值为 93.02%,死亡风险的优势比为 11.429。

结论

NLR>12 和 LCR<0.03 是评估墨西哥严重 COVID-19 患者死亡风险的有用生物标志物。

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