Analyzing Chinese patients with post-operative acute kidney injury.

Ren Fail

Department of Nephrology, Shanghai Ruijin Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, PR China.

Published: January 2012

Background: To investigate clinical characteristics and risk factors of Chinese patients with post-operative acute kidney injury (PO-AKI).

Methods: Patients with PO-AKI in Ruijin Hospital from December 1997 to December 2005 were retrospectively studied.

Results: Patients' mean age was 62.2 ± 18.1 years. There were 111 males and 57 females. The mean serum creatinine at diagnosis was 370.41 ± 320.92 μmol/L and the mean estimated glomerular filtration rate was 33.56 ± 24.24 mL/min. For the outcome of the patients, 38 died and the mortality rate was 22.6%. There were 17 patients (10.1%) with Acute Dialysis Quality Initiative-RIFLE (risk-injury-failure-loss-end classification) phase R, 21 (12.5%) with phase I, and 130 (77.4%) with phase F. There was no significant difference in mortality regarding patients who underwent different types of surgeries. For the risk factors related to PO-AKI, acute tubular necrosis (ATN) increased relative risk of mortality PO-AKI (odds ratio = 7.089, 95% confidence interval = 2.069-24.288, p < 0.001). Multivariate regression models showed that ATN had a positive correlation with mortality of PO-AKI.

Conclusions: PO-AKI is one of the most common causes of AKI in patients who underwent operations. Special attention should be paid to risk factors related to PO-AKI in order to improve prognosis.

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http://dx.doi.org/10.3109/0886022X.2011.601827DOI Listing

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