Abstract: Objective To evaluate the incidence of acute kidney injury and its risk factors after vascular surgery. Method The clinical, surgery and laboratory data of 1,332 patients undergoing vascular surgery in the year of 2011 were collected from electronic medical records and retrospectively reviewed. Result Fiftyfour (4.1%) of 1332 patients developed AKI after the surgery, including 16/61 aortic aneurysm, 10/57 acute limb arterial embolism, and 15/451 arterial stenosis/embolism. Nine of the 54 AKI patients (16.7%) died. The morbidity of chronic kidney disease (CKD) before the surgery was 17%. Logistic regression analysis revealed that radio-contrast media, a history of CKD, intraoperative hypotension and multiple organ dysfunction syndrome (MODS) were the risk factor of AKI (OR=1.149, 2.432, 5.126 and 6.645, respectively; P＜0.05). Conclusion Higher morbidity of AKI was found after vascular surgery, especially after aortic aneurysm and acute arterial embolism. A history of CKD, intraoperative hypotension and MODS were the major risk factors of AKI. Therefore, we should pay attention to the presence of CKD before surgery and changes of renal function after the surgery, to facilitate early diagnosis and appropriate treatment of AKI.

Key words: Acute kidney injury, Vascular surgery, Risk factor