Endovascular Repair of Iliac Aneurysms Using the Gore Iliac Branch Endoprosthesis with Up-and-Over Technique.

Abstract

Objectives: The Gore iliac branch endoprosthesis (IBE) enables internal iliac artery (IIA) reconstruction, extending the indications of endovascular aneurysmal repair (EVAR); however, the up-and-over technique is challenging. This study aimed to clarify the advantages and procedural limitations of the up-and-over technique. Methods: From January 2019 to October 2022, 22 patients who underwent IIA reconstruction with Gore IBE were enrolled. The patients were divided into the S and Up groups that underwent IIA reconstruction using the standard and up-and-over techniques, respectively. Aortic anatomic measurements, surgical factors, and postoperative outcomes were examined. Results: No significant differences in operative time, fluoroscopy time, contrast medium use, blood loss volume, and length of postoperative hospital stay were observed between the S (12 patients) and Up (10 patients) groups. However, the distance from the lower renal artery to the reconstructed IIA origin was considerably shorter in the Up group than in the S group. During the 19-month follow-up, no adverse events were observed in the Up group. Conclusions: The up-and-over technique can be a valuable option for cases where IIA reconstruction is difficult with standard procedures with Gore IBE. Therefore, understanding the procedural precautions and ensuring safety are crucial to its success.