Aortic arch debranching is a procedure that creates new arterial pathways to reroute blood flow in the aortic arch, typically performed before an endovascular repair of aortic aneurysms or dissections. The procedure involves revascularizing the arteries that branch off the aortic arch, ensuring continued blood flow to the brain and other vital organs during the repair process.

This technique is essential for complex cases of aortic disease, improving the safety and outcomes of endovascular procedures in patients with compromised aortic arch anatomy.