目的 探析细胞分布宽度，CURB评分与ICU肺炎病情严重程度的关系。方法 选取2017年4月-2018年5月本院ICU肺 炎患者120例，依据美国感染病学会/胸科学会发布的重症肺炎标准，将患者分为重症肺炎组(n=58)与非重症肺炎 组(n=62)，分析两组患者细胞分布宽度(RDW)，CURB评分对患者病情严重程度的预测价值。结果 重症肺炎组患者 RDW水平以及CURB评分高于对照组，差异有统计学意义(P＜0.05)；对ICU患者RDW水平与CURB评分指标进行ROC曲 线分析，ROC曲线下面积分别为RDW[0.845(95%CI0.773-0.916)]、CURB[0.912(95%CI0.863-0.961)]，联合诊断 [0.956(95%CI0.922-0.989)]。结论 RDW与CURB评分可用于ICU肺炎病情严重程度的判断，应用价值较高。

Objective To explore and analyze the relationship between cell distribution width, CURB score and severity of ICU pneumonia. Methods A total of 120 patients with ICU pneumonia in our hospital from April 2017 to May 2018 were selected. According to the criteria of severe pneumonia issued by the Infectious Disease Society of America/American Thoracic Society, the patients were divided into severe pneumonia group(n=58) and non-severe pneumonia group (n=62). The predictive value of cell distribution width(RDW) and CURB score on the severity of diseasewas analyzed. Results The RDW level and CURB score in severe pneumonia group were significantly higher than those in control group(P<0.05). ROC curve analysis was performed on RDW level and CURB score in ICU patients, and the area under the ROC curve was 0.845 (95% CI 0.773-0.916) of RDW, 0.912 (95% CI 0.863-0.961) of CURB and 0.956 (95% CI 0.922-0.989) of combined diagnosis. Conclusion RDW level and CURB score can be used to judge the severity of ICU pneumonia, and they have higher application value.