Currently, there are two methods of stentgraft implantation considering patients with abdominal aortic aneurysms (AAA) undergoing endovascular repair: the suprarenal and infrarenal fixation. It has been suggested that suprarenal fixation may lead towards impaired kidney function.
<bold>The aim of the study</bold> was to assess the influence of suprarenal stentgraft fixation on kidney function in patients after endovascular repair of abdominal aortic aneurysms.
<bold>Material and methods.</bold> The inclusion criteria were fulfilled by 118 patients who were subjected to endovascular treatment, due to abdominal aortic aneurysms. They were consequently divided into two groups - suprarenal (NN) or infrarenal (PN) - based on the stentgraft system used. Both groups were compared on the basis of co-morbidities, operative risk (ASA score), and volume of contrast medium used intraoperatively. The creatinine concentration (cr) and creatinine clearance (Cr.cl) were assessed during the preoperative period, between the 3-rd and 7-th postoperative day, and after 3 months.
<bold>Results.</bold> Increased creatinine level during the first postoperative week was observed in 12 of 118 patients (10.1%): in the suprarenal group - 7 of 66 (10.6%), and in the infrarenal group 5 of 52 (9.96%). During the 3-rd postoperative month the increase (cr > 1.5 mg/dL) was present in 3 of 118 patients (2.5%): in the suprarenal group - 2 of 66 (3.03%) and in the infrarenal group-1 of 52 (1.9%). The difference between both groups was statistically insignificant. Furthermore, there was no statistically significant difference between creatinine clearance levels considering both groups.
<bold>Conclusions.</bold> In case of patients undergoing endovascular repair for AAA, implantation of a suprarenal device is a safe method, which does not significantly impair postoperative renal functioning. This increases the number of patients eligible for AAA treatment by means of stentgraft implantations.