Branched and fenestrated repair is a type of surgery used to repair the aorta in patients with complex aortic aneurysms or dissections. In this type of surgery, a custom-made stent graft is used to repair the aorta. The stent graft has branches and fenestrations, or openings, that allow blood to continue flowing to the side branches of the aorta, such as the iliac and renal arteries. This type of repair can be performed using minimally invasive techniques, which can reduce the risk of complications and speed up the recovery process. It is an alternative to open surgery, which involves making a large incision in the chest or abdomen to repair the aorta. Branched and fenestrated repair can be an effective treatment option for patients with complex aortic aneurysms or dissections.