中性粒细胞/淋巴细胞比值对多发性骨髓瘤患者的预后评估价值

目的探讨外周血中性粒细胞/淋巴细胞比值(NLR)在多发性骨髓瘤(MM)患者预后中的价值。方法回顾性分析87例初诊MM患者和100例体检健康者临床资料,将MM患者以NLR平均值为临界值分为低NLR组(NLR<2.68)和高NLR组(NLR≥2.68),分析2组性别、年龄、国际分期体系(ISS)、总体生存期、实验室检查结果等资料的差异,通过Kaplan-Meier法和Cox比例风险回归模型做单因素和多因素分析,确定影响MM患者的预后因素。结果MM组的NLR值明显高于健康对照组(t=2.21,P<0.05)。与低NLR组比较,高NLR组血清β2-微球蛋白(β2-MG)、钙、肌酐水平偏高,差异有统计学意义(P<0.05)。高NLR组较低NLR组总体生存期短、5年生存率低。单因素分析和多因素分析结果显示,NLR≥2.68,β2-MG升高是MM预后不良的危险因素及独立危险因素(P<0.05)。结论NLR是MM患者预后判断的1个独立危险因素,高水平NLR患者的总体生存期短,但需大样本资料证实。     

The value of the neutrophil‐to‐lymphocyte ratio and platelet‐to‐lymphocyte ratio as complementary diagnostic tools in the diagnosis of rheumatoid arthritis: A multicenter retrospective study

BackgroundThe neutrophil‐to‐lymphocyte ratio (NLR) and platelet‐to‐lymphocyte ratio (PLR) have drawn attention in recent years as novel non‐specific inflammatory markers; however, only a few studies have been conducted to investigate their value in RA.ObjectiveTo investigate the value of the neutrophil‐to‐lymphocyte ratio (NLR) and the platelet‐to‐lymphocyte ratio (PLR) as complementary diagnostic tools in rheumatoid arthritis (RA).MethodThis study included 1009 patients with RA, 170 patients with other rheumatic diseases, and 245 healthy individuals from four medical centers. The patients'' general data, including complete blood count, C‐reactive protein (CRP), erythrocyte sedimentation rate (ESR), and rheumatoid factor (RF), were retrospectively analyzed, and the NLR and PLR were calculated. Potential effective indicators were screened by logistic regression analysis, and a receiver operating characteristic (ROC) curve was plotted to evaluate their diagnostic value for RA.Results(a) The NLR and PLR were significantly higher in the RA group than in the non‐RA group and the control group (P < .05). (b) Spearman''s Rho showed that the NLR was positively correlated with the PLR (r = .584, P < .05), RF (r = .167, P < .01), and CRP (r = .280, P < .01) but was not significantly correlated with ESR (r = .100, P > .05). The PLR was positively correlated with RF (r = .139, P < .01), CRP (r = .297, P < .01), and ESR (r = .262, P < .05). (c) Logistic analysis showed that RF, CRP, ESR, and the NLR had diagnostic value for RA. (d) For the NLR, the area under the curve (AUC) of the ROC curve was 0.831; at the cutoff value of 2.13, the diagnostic sensitivity, specificity, accuracy, and Youden index were 76.7%, 75.9%, 76.4%, and 0.5424, respectively.ConclusionThe NLR was less effective than CRP and RF but was superior to ESR in the diagnosis of RA. The NLR can thus be used as a complementary diagnostic indicator in the diagnosis of RA.     

血浆中性粒细胞与淋巴细胞比值预测急性缺血性脑卒中机械取栓患者半年预后的价值

目的 探讨血浆中性粒细胞与淋巴细胞比值(NLR)预测急性缺血性脑卒中(AIS)机械取栓患者半年预后的价值.方法 将105例AIS机械取栓患者根据半年后改良Rankin量表(mRS)评分结果分为预后良好组48例和预后不良组57例,比较2组患者的临床资料.将有统计学差异的相关指标采用二元Logistic回归分析,采用受试者...     

高血压患者外周血中性粒细胞与淋巴细胞比例对高血压患者心脑血管事件的预测价值

目的探讨高血压患者外周血中性粒细胞与淋巴细胞比值(N/L比值)对高血压患者心脑血管事件的预测价值。方法选取2013年5月至2014年5月在该院治疗的高血压治疗的660例患者,记录患者纳入研究时外周血N/L比值,所有患者均随访到2016年5月31日,根据患者是否出现心脑血管事件,分为观察组和对照组,对比两组患者白细胞分类结果。采用Logistic回归模型探讨N/L比值对心脑血管事件的预测价值。结果观察组患者吸烟、糖尿病、高脂血症发病率分别为87.5%、72.5%、77.5%,平均动脉压(MAP)水平为(95±12)mmHg,均明显高于对照组(P0.05)。观察组患者白细胞计数、中性粒细胞比例(N%)、单核细胞计数比例、N/L比值分别为(11.6±2.5)×10~9/L、(70.8±5.9)%、(8.3±5.5)%、3.7±1.5,均高于对照组患者(P0.05)。N/L上升10%(P=0.04)、MAP升高10mmHg(P=0.02)、N%上升15%(P=0.03)是心脑血管事件的独立风险因素。结论 N/L比值、MAP是高血压患者心脑血管事件的独立风险因素。     

The prognostic value of the lactate/albumin ratio for predicting mortality in septic patients presenting to the emergency department: a prospective study

ObjectivesLactate/albumin (L/A) ratio is a biomarker in sepsis that has been shown to outperform lactate. This prospective study aims to validate the superior prognostic value of the L/A ratio to lactate in sepsis and septic shock.MethodsProspective cohort conducted from September 2018 till February 2021 on adult patients presenting to the Emergency Department (ED) at a tertiary care centre with sepsis or septic shock. The primary outcome was the prognostic value of the L/A ratio compared to lactate with regards to mortality.ResultsA total of 939 septic patients were included throughout the study period. A total of 236 patients developed septic shock. The AUC value of the L/A ratio in septic patients was 0.65 (95% CI 0.61–0.70) and was higher than that of lactate alone 0.60 (95% CI 0.55–0.64) with a p < .0001. The optimal L/A ratio cut-off threshold that separated survivors from non-survivors was found to be 0.115 for all septic patients. The AUC of the L/A ratio was significantly higher for patients with a lactate ≥2 mmol/L: 0.69 (95% CI 0.64–0.74) versus 0.60 (95% CI 0.54–0.66) with a p < .0001 as well as for patients with an albumin level less than 30 g/L (AUC = 0.69 95% CI= 0.62–0.75 vs AUC= 0.66 95% CI= 0.59–0.73, p = .04). Among septic shock patients there was no statically significant difference in the AUC value of the L/A ratio compared to lactate (0.53 95% CI 0.45–0.61 vs 0.50 95% CI 0.43–0.58 respectively with a p-value = .11).ConclusionsThe L/A ratio is a better predictor of in-patient mortality than lactate in sepsis patients. This superiority was not found in the septic shock subgroup. Our results encourage the use of the ratio early in the ED as a superior prognostic tool in sepsis patients.

Key messages

1. We aimed to assess the prognostic usefulness of the Lactate/Albumin ratio compared to lactate alone in septic and septic shock patients.
2. The L/A ratio proved to be a better predictor of in-patient mortality than lactate alone in sepsis patients. This pattern also applies across various subgroups in our study (malignancy, diabetics, age above 65, lactate level less than 2 mmol/L, albumin less than 30 g/L). Our results favour the use of the L/A ratio over lactate alone in patients with sepsis and the previously mentioned subgroups.
3. Our results do not favour the use of the ratio instead of lactate in septic shock patients as there was no statistically significant difference between the AUCs of the ratio and lactate alone.

     

Cardiac troponin I does not independently predict mortality in critically ill patients with severe sepsis

Objective: Patients with sepsis often have elevated cardiac troponin I even in the absence of coronary artery disease. The prognostic value of cardiac troponins in critically ill patients with sepsis remains debatable. Our objective was to evaluate the prognostic value of cardiac troponin I in critically ill patients with severe sepsis. Methods: In this retrospective study, we included patients with severe sepsis who had troponin assayed within 12 h of admission to intensive care over a 6 year period. Patients who had myocardial infarction at intensive care admission in the setting of sepsis were excluded. Included patients were classified into two groups based on their serum troponin I levels: low troponin group (troponin ≤ 0.1 µg/L) and elevated troponin group (troponin > 0.1 µg/L). The primary outcome of interest was hospital mortality. The secondary outcome measures included intensive care mortality, intensive care and hospital length of stay. Results: A total of 382 patients were admitted to intensive care with sepsis. Of these, 293 patients were included in analyses. There was a statistically significant difference in hospital (15% vs 36.1%; P < 0.01) and intensive care (11% vs 25%; P < 0.01) mortality, but not in intensive care and hospital duration of stay. Logistic regression analysis revealed temperature, simplified acute physiology score II and serum lactate to be independent predictors of hospital mortality. Cardiac troponin I was not an independent predictor of hospital mortality. Conclusion: Critically ill patients with severe sepsis who had elevated troponin had increased hospital and intensive care mortality. However, cardiac troponin I did not independently predict hospital mortality.     

中性粒细胞/淋巴细胞比值、血小板/淋巴细胞比值对溃疡性结肠炎的诊断价值

目的探讨中性粒细胞/淋巴细胞比值(NLR)和血小板/淋巴细胞比值(PLR)在溃疡性结肠炎(UC)患者外周血中的水平,评估两者对UC的诊断效能。方法收集87例UC患者纳入UC组,收集65例肠易激综合征(IBS)患者纳入对照组。分析患者临床资料,比较两组NLR和PLR水平差异;采用Pearson相关分析NLR、PLR与临床常用指标白细胞计数(WBC)、血小板计数(PLT)、C反应蛋白(CRP)、红细胞沉降率(ESR)的相关性;采用受试者工作特征(ROC)曲线计算NLR和PLR最佳临界值及曲线下面积(AUC),并与常用炎性指标进行比较。结果UC组患者外周血NLR和PLR均明显高于对照组(P<0.05)。相关性分析发现,NLR、PLR均与WBC、CRP和ESR呈正相关(P<0.05)。NLR用于诊断UC的最佳临界值为2.64,灵敏度和特异度分别为81.9%和62.6%,AUC为0.758,PLR用于诊断UC的最佳临界值为163.40,灵敏度和特异度分别为75.0%和60.6%,AUC为0.759,两者均优于WBC(AUC:0.687)和PLT(AUC:0.745),稍逊于ESR(AUC:0.783)和CRP(AUC:0.830)。NLR联合CRP、PLR联合CRP对UC的诊断价值均优于CRP单独检测。结论NLR和PLR在UC患者外周血中的水平升高。NLR、PLR诊断UC的效能优于常用指标WBC和PLT,其与CRP联合应用可提高UC的诊断效能。     

The neutrophil‐to‐lymphocyte ratio as a marker of chronic obstructive pulmonary disease and its exacerbations: A systematic review and meta‐analysis

Introduction

The main white blood cell populations, neutrophils and lymphocytes, are involved in the pathophysiology of chronic obstructive pulmonary disease (COPD). We conducted a systematic review and meta‐analysis of studies investigating the relationship between the neutrophil to lymphocyte ratio (NLR, a marker of subclinical inflammation), presence of COPD, and its exacerbations.

Methods

A comprehensive literature search was conducted in Pubmed, Web of Science and Scopus databases; two investigators independently reviewed suitable studies.

Results

Nine studies, from 247 initially identified, were included in the meta‐analysis. Seven studies, in 775 COPD patients with stable disease and 496 healthy controls, showed a significant increase in NLR values in stable COPD (standardised mean difference, SMD, 0.773, 95% CI 0.410‐1.136; P < 0.001). Furthermore, in six studies in 527 COPD patients with acute exacerbation and 620 COPD patients with stable disease, NLR values were significantly higher in patients with exacerbations (random effects SMD 0.850, 95% CI 0.549‐1.151; P < 0.001).

Conclusions

Our meta‐analysis showed that NLR values are significantly higher in stable COPD patients when compared to healthy individuals, although the magnitude of the difference is reduced after trim and fill adjustment, and in patients with COPD exacerbations when compared to patients with stable disease. Further studies, in larger cohorts, are needed to confirm whether the NLR is a useful tool in discriminating between COPD patients with stable disease, those with acute exacerbations, and subjects without the disease.