Crit Care:血浆胱抑素C升高与急性呼吸窘迫综合征患者死亡率有关

2020-07-13 MedSci原创 MedSci原创

胱抑素C是慢性肾脏疾病中肾小球滤过率的有效标记。在重症患者的异质人群中,较高的血浆中胱抑素C浓度与较差的临床结局相关,在确定重症患者的肾脏损伤方面可能优于肌酐。近日,危重病医学领域权威杂志Critic

胱抑素C是慢性肾脏疾病中肾小球滤过率的有效标记。在重症患者的异质人群中,较高的血浆中胱抑素C浓度与较差的临床结局相关,在确定重症患者的肾脏损伤方面可能优于肌酐。近日,危重病医学领域权威杂志Critical Care上发表了一篇研究文章,研究人员假设急性呼吸窘迫综合征(ARDS)患者血浆胱抑素C水平升高与死亡风险之间的相关性。

在这项回顾性研究中,研究人员通过浊度法对919名患者入组时获得的血浆进行了胱抑素C的测定。研究人员进行了多变量logistic回归,以评估胱抑素C四分位数与60天死亡率之间的关联。根据“肾脏疾病:改善全球预后”(KDIGO)标准,在入组后的前7天中确定了急性肾损伤(AKI)状态,并对分析进行了分层。

与存活60天的患者相比,死亡患者中的胱抑素C水平显著更高[1.2(0.9-1.9)mg/L vs. 0.8(0.6-1.2)mg/L,p<0.001]。与最低的三分位数相比,胱抑素C水平最高四分位数的受试者在60天时的死亡几率显著升高[OR为1.8(1.2–2.6),经调整分析的p=0.003];与最低的四分位数(OR为1.1、1.8和2.5)相比,胱抑素C水平处于较高的四分位数个体死亡几率逐渐增加。在按AKI状态进行分层的调整后分析中,与较低的四分位数的受试者相比,胱抑素C水平处于最高四分位数的AKI受试者[OR为1.6(1.0-2.4),p=0.048]和那些无AKI的受试者[OR为2.4(1.2–5.0),p=0.017]60天时的死亡几率显著升高。在调整后的分析中,性别分层基线肌酐四分位数与死亡率之间无显著关联。

由此可见,通过肌酐确定的伴有或不伴有AKI的ARDS患者入选时较高血浆胱抑素C浓度与60天死亡率密切相关。与肌酐相比,胱抑素C可能是ARDS患者肾功能的更好生物标志物,因此,可以确定多器官功能衰竭患者的死亡风险更高。

原始出处:

Carolyn M. Hendrickson.et al.Higher plasma cystatin C is associated with mortality after acute respiratory distress syndrome: findings from a Fluid and Catheter Treatment Trial (FACTT) substudy.Critical Care.2020.https://ccforum.biomedcentral.com/articles/10.1186/s13054-020-03065-4

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