What criteria are used to determine whether an aortic aneurysm can be treated by endovascular technique

What criteria are used to determine whether an aortic aneurysm can be treated by endovascular technique?

• The relationship of the aneurysm to the origins of other vessels: In the abdomen, the relationship of the aneurysm to the renal arteries is of paramount importance because the angiographer would not want to occlude the origin of these arteries with a stent-graft. In the chest, it is preferable not to cover the origin of the left subclavian artery with the stent, but this can be done if needed, with placement of a carotid-subclavian arterial bypass graft.

• The luminal size of the common and external iliac arteries: Because the stent-graft is delivered to the aorta via a femoral artery approach, the angiographer needs a vessel large enough to accommodate the size of the delivery system (currently 6 to 8 mm).

• The length of the aneurysm and whether it extends into the iliac arteries: This determines the size and type of stent-graft used.

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