Radiology:小儿患者行对比增强CT会有肾损伤风险吗?

2020-04-13 shaosai MedSci原创

对住院小儿患者行碘剂增强药物(ICM)来行CT检查发生急性肾损伤(AKI)一直是个备受关注的问题。成人相关研究显示经静脉注射ICM行CT发生AKI的发生率与倾向分值匹配的无ICM暴露的患者;而在小儿患

背景

对住院小儿患者行碘剂增强药物(ICM)来行CT检查发生急性肾损伤(AKI)一直是个备受关注的问题。成人相关研究显示经静脉注射ICM行CT发生AKI的发生率与倾向分值匹配的无ICM暴露的患者;而在小儿患者中尚缺少相关研究。

结果

本研究旨在通过与倾向分值匹配法的行腹部US的小儿患者相比较来评价住院小儿患者在行经静脉ICM暴露于AKI的相关性。

材料与方法

本研究回顾性分析了<18岁、肾功能正常且行经静脉注射ICM增强CT或腹部CT的患者。利用23个协变量进行倾向分值匹配,通过评估肾小球滤过率(eGFR)进行分层 (≥60 mL/min/1.73 m2 or <60 mL/min/1.73 m2)。AKI定义参照AKINSCr相关标准。利用多远logistics回归分析评价CT检查后AKI风险指标,包括CT检查前eGFR和颈静脉ICM暴露的影响。

目的

共有1850例拿着纳入到倾向分值匹配样本中(925例暴露ICM组和925例未暴露ICM组)。CT和US检查中eGFR≥60 mL/min/1.73 m2和<60 mL/min/1.73 m2的患者发生AKI的发生率分别为2.2% (20/ 889) (OR: 0.98; 95% CI: 0.52, 1.86; adjusted P = .95) 5.6% (2/ 36) 、11.1% (4/36) (OR: 0.75; 95% CI: 0.11, 5.00; adjusted P = .76)。预测AKI相关性指标包括扫描前eGFR(OR: 0.99; 95% CI: 0.98, 0.995; P = .001)、体质指数(OR: 1.95; 95% CI: 1.004, 3.78; P = .049)、获得性肾脏疾病和肾毒性药物史(OR: 2.86; 95% CI: 1.55, 5.25; P < .001)。经静脉注射ICM并不能预测AKI的发生(OR: 0.91; 95% CI: 0.51, 1.64; P > .05)。

结论

经静脉注射碘剂对比增强药物(ICM)CT的正常肾功能小儿患者发生急性肾损伤的发生率与无注射ICM的倾向分值匹配小儿患者相似。在估算肾小球滤过率≥60 mL/min/1.73 m2的小儿患者,ICM与AKI并无显著相关性。

原始出处:

Gilligan LA, Davenport MS, Trout AT. et al. Risk of Acute Kidney Injury Following Contrast-enhanced CT in Hospitalized Pediatric Patients: A Propensity Score Analysis.DOI:10.1148/radiol.2020191931

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