摘要目的 评价血管外肺水指数(extravascular lung water index,EVLWI)联合血管内皮生长因子受体1(sFlt-1)对重症肺炎ARDS合并感染性休克患者预后评估的价值.方法 回顾性分析2016年1月至2017年12月入住郑州大学附属郑州中心医院RICU的重症肺炎ARDS合并感染性休克,并行脉搏指示连续心排出量仪(PICCO)监测且存活超过3 d的52例患者的一般临床资料和严重度评分(APACHEⅡ和SOFA评分),按28 d预后分为存活(31例)和死亡(21例)两组.PICCO监测EVLWI,用酶联免疫吸附试验(ELISA)检测血清sFlt-1水平,多元Logistic回归分析预后的独立危险因素,行sFlt-1与EVLWI和APACHEⅡ评分相关性分析,并绘制ROC曲线分析各指标对预后(28病死率)评估的价值.结果 入RICU时,死亡组的血乳酸、APACHEⅡ评分和SOFA评分明显高于存活组(P均<0.05),RICU住院时间明显低于存活组(P<0.05),其余基线指标在两组间差异均无统计学意义(P均>0.05).治疗第1、2、3天时,与存活组相比,死亡组的EVLWI、sFlt-1水平、血乳酸、APACHEⅡ评分和SOFA评分均显著增高(P均<0.05),而在第2、3天时,其PaO2/FiO2明显降低(P均<0.05).Logistic回归分析显示sFlt-1水平和EVLWI与重症肺炎ARDS合并感染性休克死亡密切相关.入RICU 1、2、3 d时的sFlt-1分别与EVLWI及APACHEⅡ评分均显著相关(P均<0.01).入RICU第1天和第3天时,sFlt-1联合EVLWI预后评估的敏感度和特异度分别为89.7％,78.2％ 和86.3％,75.7％,AUC分别为0.875和0.856(P均<0.01),比同期单个指标有更好的预后评估价值.结论 sFlt-1可作为重症肺炎ARDS合并感染性休克的一个生物标志物,与EVLWI联合可早期对患者进行预后评估(28 d病死率).

abstractsObjective To evaluate the prognosis value of plasma soluble vascular endothelial growth factor receptor (sFlt-1) combined with extravascular lung water index (EVLWI) in acute respiratory distress syndrome (ARDS) complicated with septic shock caused by severe pneumonia. Methods A retrospective analysis was conducted in Respiratory Intensive Care Unit of the Affiliated Zhengzhou Central Hospital of Zhengzhou University from January 2015 to July 2017. The study included 52 severe pneumonia patients with ARDS complicated with septic shock, who was performed by measurement of pulse index continuous cardiac output (PICCO) and survived more than 3 days after admission. According to the 28-day mortality, these patients were divided into the survival group (31 cases) and the death group (21 cases). PICCO was used to record the EVLWI level. The plasma level of sFlt-1 was measured by enzyme-linked immunosorbent assay (ELISA). Acute physiology and chronic health evaluation II (APACHE II) score and sequential organ failure assessment (SOFA) score were calculated. Independent risk factors were analyzed by multiple logistic regression. Correlation analysis between plasma sFlt-1 and EVLWI and APACHE II values was performed on the 1st, 2nd and 3rd day after admission. Receiver operating characteristic curve (ROC) was calculated, and the prognostic value of each parameter was assessed. Results The blood lactate, APACHE II score and SOFA score in the death group were significantly higher than those in the survival group at RICU admission (P<0.05), and the length of RICU stay was significantly shorter than that in the survival group (P<0.05), while differences in other clinical characteristics between the two groups were not statistically significant. The levels of EVLWI, sFlt-1 and blood lactate, APACHE II score and SOFA score in the death group were significantly higher than those in the survival group on the 1st, 2nd and 3rd day (all P<0.05), whereas the PaO2/FiO2 was significantly lower than that of the survival group on the 2nd and 3rd day (all P<0.05). Logistic regression analysis showed that sflt-1 level and EVLWI were significantly related with the patient mortality. The levels of sFlt-1 on day 1, 2 and 3 after RICU admission were positively related to EVLWI and APACHE II score (all P<0.01). The sensitivity and specificity of sFlt-1 combined with EVLWI in prognosis evaluation were 89.7％, 78.2％ and 86.3％, 75.7％, respectively. The AUC of sFlt-1 combined with EVLWI was 0.875 and 0.856 on the 1st and 3rd day, respectively (all P<0.01), which had a better prognostic value than each of them. Conclusions SFlt-1 could be used as a biomarker of mortality for severe pneumonia patients with ARDS complicated with septic shock. The combination of sFlt-1 and EVLWI might be important in early prediction of the prognosis of the 28-day mortality in patients with ARDS complicated with septic shock caused by severe pneumonia.