• Xi Hui Li, Feng Xiao, Yan Li, Jin Wang, Bo Song, Yang Yang, Wei Qiang Xin, Ying Li DU, Nai Qing Song, and Ming Li Zhang.
• Department of Cardiac Surgery, Peking University First Hospital, Beijing 100034, China. heart2000@163.com
• Beijing Da Xue Xue Bao. 2009 Oct 18; 41 (5): 554-7.

ObjectiveTo investigate the incidence, correlate factors and effect on convalescent of acute kidney injury (AKI) after coronary artery bypass grafting (CABG).MethodsSixty-eight consecutive patients who underwent scheduled CABG were included. AKI was diagnosed according to the diagnostic criteria from expert group of AKI. The patients were divided into AKI group with AKI and control group without AKI. Difference of clinic features was contrasted between the two groups. And multivariable logistic regression modeling was used to identify the risk factors of AKI.ResultsAKI occurred in 27.94% patients (19/68). There was significant difference between the two groups in gender, hypertension, hyperlipemia, number of grafts, the duration of mechanic ventilation, the time of ICU and the length of stay post operation. Hypertension(Wald 3.27, P=0.07, 95% CI 0.85-53.59), number of grafts(Wald 7.67, P=0.01, 95%CI 1.48-9.73), the duration of mechanic ventilation(Wald 4.94, P=0.03, 95%CI 1.00-1.18) were risk factors of AKI in multivariable logistic regression modeling.ConclusionThe incidence of AKI was high (27.94%). Female, hypertension, hyperlipemia, number of grafts, the duration of mechanic ventilation were risk factors in monovariance analysis, and AKI may increase the time of ICU and the length of stay post operation. Hypertension, number of grafts, duration of mechanic ventilation were independent risk factors of AKI in multivariable logistic regression model.

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