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目的:探讨肾阻力指数（RRI）联合中心静脉压（CVP）对脓毒性休克诱导急性肾损伤（AKI）的预测价值，以期寻找诊断脓毒性休克诱导AKI更好的指标。方法:采用前瞻性观察性研究，选择河北省人民医院重症医学科2017年11月至2018年10月连续收治的脓毒性休克成人患者。记录患者的一般资料，如年龄、性别、基础疾病、感染部位、第一个24 h的急性生理学与慢性健康状况评分Ⅱ（APACHEⅡ）、序贯器官衰竭评分（SOFA）；入重症监护病房（ICU）后24 h内在血流动力学相对稳定后行床旁超声测定RRI，并记录测量时去甲肾上腺素（NE）用量及血流动力学指标；记录每小时尿量、机械通气时间、ICU住院时间及28 d存活情况。观察终点事件为死亡、出院或入ICU 28 d，以首先出现的终点事件为观察终止时间。根据2012年改善全球肾脏病预后组织（KDIGO）制定的AKI诊断标准将患者分为AKI组及非AKI组，比较两组间基线资料、预后情况及可能导致AKI指标的差异；采用多因素Logistic回归分析脓毒性休克发生AKI的危险因素；用受试者工作特征曲线（ROC）评价各指标对脓毒性休克AKI的预测价值。结果:入选107例患者，其中AKI组59例，非AKI组48例。两组RRI、CVP、NE用量≥0.5 μg·kgn -1·minn -1的比例、降钙素原（PCT）、血乳酸（Lac）及血肌酐（SCr）比较差异均有统计学意义。Logistic回归分析显示，CVP、RRI、Lac、PCT为脓毒性休克发生AKI的危险因素〔CVP：优势比（n OR）＝1.20，95%可信区间（95%n CI）为1.03～1.40，n P＝0.022；RRI：n OR＝3.02，95%n CI为2.64～3.48，n P＝0.006；Lac：n OR＝2.43，95%n CI为1.32～4.50，n P＝0.005；PCT：n OR＝1.20，95%n CI为1.05～1.38，n P＝0.009〕。ROC曲线分析显示，CVP≥9.5 mmHg（1 mmHg＝0.133 kPa）、RRI≥0.695预测脓毒性休克患者发生AKI的ROC曲线下面积（AUC）分别为0.656和0.662；RRI联合CVP的预测价值大于单一指标，但诊断价值不高，其AUC为0.712，95%n CI为0.615～0.809，敏感度为59%，特异度为75%。n 结论:高RRI和CVP为脓毒性休克诱导AKI的危险因素，RRI联合CVP预测脓毒性休克诱导AKI发生的价值不高，需要对多普勒超声测得RRI的影响因素进一步分析，才可为AKI的早期预防及干预提供线索。“,”Objective:To explore a better indicator that can predict septic shock induced acute kidney injury (AKI) by combining renal resistive index (RRI) and central venous pressure (CVP).Methods:A prospective observational study was conducted. Patients with septic shock admitted to department of critical care medicine of Hebei General Hospital from November 2017 to October 2018 were enrolled. Baseline characteristics such as age, gender, underlying diseases, infection sites, acute physiology and chronic health evaluation Ⅱ(APACHEⅡ) in the first 24-hour, sequential organ failure assessment (SOFA) were recorded; Doppler-based RRI was obtained on the first day when hemodynamics was relatively stable, meanwhile the dose of norepinephrine and hemodynamic parameters were assessed. Urine output per hour, the total duration of mechanical ventilation, the length of intensive care unit (ICU) stay and 28-day mortality were also collected. Observational end point was death at discharge or the 28th day after ICU admission, whenever which came first. The patients were divided into AKI and non-AKI groups according to the 2012 Kidney Disease: Improving Global Organization (KDIGO) clinical practice guideline. The baseline and prognostic indicators, variables potentially associated with AKI were compared between the two groups. The variables independently associated with septic shock induced AKI were identified using multivariable Logistic regression. The predictive value of RRI and RRI combining CVP for AKI were analyzed by the receiver operating characteristic (ROC) curve.Results:A total of 107 patients were enrolled, with 59 patients in AKI group and 48 patients in non-AKI group. There was significant difference in RRI, CVP, percentage of norepinephrine dosage ≥0.5 μg·kg n -1·minn -1, procalcitonin (PCT), lactate (Lac), and serum creatinine (SCr) between the two groups. Logistic regression analysis showed that high CVP, RRI, Lac and PCT were independent risk factors for septic shock induced AKI [CVP: odds ratio (n OR) = 1.20, 95% confidence interval (95%n CI) was 1.03-1.40, n P = 0.022; RRI: n OR = 3.02, 95%n CI was 2.64-3.48, n P = 0.006; Lac: n OR = 2.43, 95%n CI was 1.32-4.50, n P = 0.005; PCT: n OR = 1.20, 95%n CI was 1.05-1.38, n P = 0.009]. ROC curve analysis showed that the area under ROC curve (AUC) values of CVP≥9.5 mmHg (1 mmHg = 0.133 kPa) and RRI≥0.695 for predicting septic shock induced AKI were 0.656 and 0.662 respectively. The AUC value of the combination of RRI and CVP was greater compared with either RRI or CVP alone in predicting septic shock induced AKI, which AUC value was 0.712, 95%n CI was 0.615-0.809, the sensitivity was 59% and the specificity was 75%.n Conclusions:High CVP and RRI were independent risk factors for septic shock induced AKI. The combination of RRI and CVP performs poorly in predicting septic shock induced AKI. Further studies are needed to describe factors influencing Doppler-based assessment of RRI, which may help clinicians to prevent AKI early.