Special iliac artery considerations during aneurysm endografting

Area of Science:

• Vascular Surgery
• Interventional Radiology
• Endovascular Techniques

Background:

• Endograft exclusion is established for abdominal aortic aneurysms (AAA).
• Technical challenges in delivering grafts through tortuous or diseased iliac arteries are understudied.
• Treatment of associated iliac aneurysmal disease requires specific attention.

Purpose of the Study:

• To review the impact of iliac artery anatomy on endovascular repair of AAA.
• To identify specific anatomical challenges and their management during endografting.
• To highlight the need for specialized planning in complex iliac anatomies.

Main Methods:

• Retrospective review of 74 patients undergoing endoluminal repair of AAA and/or iliac artery aneurysms over 19 months.
• Analysis of iliac anatomy requiring special consideration during endograft delivery.
• Categorization of anatomical variations including aneurysms, ectasia, tortuosity, stenosis, and bifurcation issues.

Main Results:

• 47% of patients (35/74) presented with iliac anatomy requiring special attention.
• 18% (13/74) had common iliac artery aneurysms, with 11 requiring extension into the external iliac artery (EIA) and hypogastric embolization.
• 36% (27/74) experienced tortuosity or stenosis, necessitating advanced techniques; 8 patients required intervention for EIA occlusive disease or trauma.

Conclusions:

• Iliac artery anatomy significantly impacts endovascular AAA repair, affecting up to 47% of patients.
• Supplemental surgical and endovascular procedures are often necessary for successful graft placement.
• Thorough understanding and meticulous planning of iliac constraints are essential for optimal patient outcomes.