Cost-utility Analysis of Fenestrated Aortic Stents Versus Open Surgery for the Treatment of Complex Abdominal Aortic Aneurysms

Fenestrated endovascular aortic aneurysm repair consists in excluding a juxtrenal or suprarenal aneurysm by deploying a covered stent (stent graft) in the aorta so as to created sealing zones on both sides of the aneurysm. Since the proximal sealing is located in the visceral segment of the aorta, fenestrations are created to maintain blod flow in renal and visceral arteries. These fenestrations are custom made for each patient. Brindging covered stents are deployed between each fenestration and corresponding target arteries in order to insure sealing of the system.

Open repair of abdominal aortic aneurysms consists in cross-clamping the aorta on both sides of the aneurysm and replace the diseased segment by a prosthetic graft.