[Predictors of aneurysmal sac growth after endovascular aortic repair]

The growth of the aneurysmal sac after endovascular treatment of infrarenal abdominal aortic aneurysms remains a significant problem associated with the risk of late complications. Identifying reliable predictors of this process is essential for improving long-term treatment outcomes. The aim to evaluate the predictors of aneurysmal sac growth after endovascular treatment of infrarenal abdominal aortic aneurysms.

A retrospective study was conducted on 214 patients who underwent endovascular treatment of infrarenal abdominal aortic aneurysms between 2017 and 2023. Patients were divided into two groups: those with aneurysm regression or stability (n=180) and those with aneurysm growth (n=34). Clinical, demographic, anatomical, and technical predictors of sac growth were assessed.

It was found that the most significant factors influencing aneurysmal sac growth were the initial aneurysm diameter, the volume of its patent lumen, and the patency of the inferior mesenteric artery. Some patients with a stable aneurysm diameter showed an increase in sac volume of more than 10%.

Measuring the volume of the aneurysmal sac allows for the identification of patients at risk of disease progression, even when the aneurysm diameter remains stable. The identified predictors will improve the results of endovascular treatment of infrarenal abdominal aortic aneurysms.