Abdominal aortic aneurysm is an irreversible dilation of the infrarenal aorta, which if left untreated may rupture. Surgical intervention is usually necessary to prevent this outcome. The decision to operate is based on the maximum diameter of the aneurysm. Two types of treatment exist; these are open repair and endovascular repair (EVAR). Of concern here is EVAR, which is the minimally invasive technique of inserting a stent-graft into the site of the aneurysm in order to shield the aneurysm wall from the stresses of blood pressure.

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