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Background The epidemiology of acute kidney injury after cardiac surgery depends on the definition used.Limited study reports the incidence of acute kidney injury after isolated aortic valve replacement.Methods We retrospectively analyzed clinical data of 165 adults who had isolated aortic valve replacement between January 2010 and June 2011 and compared the maximum acute kidney injury stage according to the RIFLE(risk,injury,failure,loss of function,end-stage kidney disease) and AKIN(Acute Kidney Injury Network) criteria.Receiver operating curves were used to compare the predictive ability of each AKI definition for the occurrence of renal replacement therapy.Results The incidence of AKI using the RIFLE and AKIN criteria was82.4%and 71.5%respectively,but individual patients were classified differently.The area under the receiver operating characteristic curve for renal replacement therapy showed no difference between the RIFLE and AKIN criteria(0.710 vs.0.703,P>0.05).Conclusion There is a high incidence of acute kidney injury after isolated aortic valve replacement,and there is no difference between the RIFLE and AKIN criteria for predicting renal replacement therapy.
Background The epidemiology of acute kidney injury after cardiac surgery depends on the definition used. Limited study reports the incidence of acute kidney injury after isolated aortic valve replacement. Methods We retrospectively analyzed clinical data of 165 adults who had isolated aortic valve replacement between January 2010 and June 2011 and compared the maximum acute kidney injury stage according to the RIFLE (risk, injury, failure, loss of function, end-stage kidney disease) and AKIN (Acute Kidney Injury Network) criteria. Receiver operating curves were used to compare the predictive ability of each AKI definition for the occurrence of renal replacement therapy. Results The incidence of AKI using the RIFLE and AKIN criteria was 82.4% and 71.5% respectively, but individual patients were classified specifically.. the area under the receiver operating characteristic curve for renal replacement therapy showed no difference between the RIFLE and AKIN criteria (0.710 vs.0.703, P> 0.05) .Conclusion There is a high incidence of acute kidney injury after isolated aortic valve replacement, and there is no difference between the RIFLE and AKIN criteria for predicting renal replacement therapy.