• J Am Heart Assoc · Aug 2016

    Dynamic Predictive Scores for Cardiac Surgery-Associated Acute Kidney Injury.

    • Wuhua Jiang, Jie Teng, Jiarui Xu, Bo Shen, Yimei Wang, Yi Fang, Zhouping Zou, Jifu Jin, Yamin Zhuang, Lan Liu, Zhe Luo, Chunsheng Wang, and Xiaoqiang Ding.
    • Department of Nephrology, Zhongshan Hospital, Shanghai Medical College, Fudan University, Shanghai, China Shanghai Kidney and Dialysis Institute, Shanghai, China.
    • J Am Heart Assoc. 2016 Aug 4; 5 (8).

    BackgroundCardiac surgery-associated acute kidney injury (CSA-AKI) is a common complication with a poor prognosis. In order to identify modifiable perioperative risk factors for AKI, which existing risk scores are insufficient to predict, a dynamic clinical risk score to allow clinicians to estimate the risk of CSA-AKI from preoperative to early postoperative periods is needed.Methods And ResultsA total of 7233 cardiac surgery patients in our institution from January 2010 to April 2013 were enrolled prospectively and distributed into 2 cohorts. Among the derivation cohort, logistic regression was used to analyze CSA-AKI risk factors preoperatively, on the day of ICU admittance and 24 hours after ICU admittance. Sex, age, valve surgery combined with coronary artery bypass grafting, preoperative NYHA score >2, previous cardiac surgery, preoperative kidney (without renal replacement therapy) disease, intraoperative cardiopulmonary bypass application, intraoperative erythrocyte transfusions, and postoperative low cardiac output syndrome were identified to be associated with CSA-AKI. Among the other 1152 patients who served as a validation cohort, the point scoring of risk factor combinations led to area under receiver operator characteristics curves (AUROC) values for CSA-AKI prediction of 0.74 (preoperative), 0.75 (on the day of ICU admission), and 0.82 (postoperative), and Hosmer-Lemeshow goodness-of-fit tests revealed a good agreement of expected and observed CSA-AKI rates.ConclusionsThe first dynamic predictive score system, with Kidney Disease: Improving Global Outcomes (KDIGO) AKI definition, was developed and predictive efficiency for CSA-AKI was validated in cardiac surgery patients.© 2016 The Authors. Published on behalf of the American Heart Association, Inc., by Wiley Blackwell.

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