Predictors of creatinine rise post-endovascular abdominal aortic aneurysm repair

Background: Endovascular abdominal aortic aneurysm repair involves manipulation of the aorta around the renal arteries. Fenestrated grafts involve the direct cannulation, stenting and injecting of contrast into the renal arteries. These procedures may be associated with an acute post‐operative creatinine rise. Methods: We retrospectively examined data from all endovascular aortic repairs at our institution from 2005 to 2009, where contrast dosage had been recorded. Renal impairment was defined as a 25% increase in creatinine during the 5‐day post‐operative period. Univariable analysis was undertaken for a number of likely predictors, including: age, contrast dosage, preoperative creatinine, graft type (fenestrated or standard), diabetes mellitus, hypertension, hypercholesterolaemia, ischaemic heart disease, aspirin therapy, statins therapy, non‐steroidal anti‐inflammatory drug use, preoperative N‐acetyl‐cysteine and intravenous pre‐hydration. Multivariable analysis was then applied to variables with a univariable P‐value of