Fenestrated EVAR (FEVAR) is a specialized endovascular procedure used to treat complex aortic aneurysms, particularly those involving the branches of the aorta. The procedure involves using a custom-made stent graft with openings (fenestrations) to allow blood to flow into branch arteries while repairing the aneurysm. FEVAR is typically used for patients with aneurysms located near major arterial branches such as the renal or mesenteric arteries.

This technique offers a minimally invasive alternative to open surgery, improving recovery time and reducing surgical risks for high-risk patients with complex aortic aneurysms.