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Endovascular aneurysm repair (EVAR) is a type of minimally-invasive endovascular surgery used to treat pathology of the aorta, most commonly an abdominal aortic aneurysm (AAA). When used to treat thoracic aortic disease, the procedure is then specifically termed TEVAR for "thoracic endovascular aortic/aneurysm repair."
A stent graft placed in the thoracic aorta to treat a thoracic aortic aneurysm. The size cut off for aortic aneurysm is crucial to its treatment. A thoracic aorta greater than 4.5 cm is generally defined as aneurysmal, while a size greater than 5.5 cm is the distinction for treatment, which can be either endovascular or surgical, with the ...
Patients with aneurysms which have a diameter less than 5 cm are at <1% rupture risk per year. When the aneurysm meets size criteria it can be treated with aortic replacement or EVAR. Thoracic. Thoracic aortic aneurysms are contained in the chest. Aneurysms of the descending aorta can often be treated with thoracic endovascular aortic repair or ...
Of these cases around 28% are confined to the thoracic portion of the aorta including the ascending aorta, aorta arch, and the descending aorta. [10] Of the thoracic aortic injuries the ligament arteriosum is the most common location followed by the portion of the aorta after the origin of the left subclavian artery. [10]
Valve-sparing aortic root replacement (also known as the David procedure) is a cardiac surgery procedure which is used to treat Aortic aneurysms and to prevent Aortic dissection. [1] It involves replacement of the aortic root without replacement of the aortic valve .
Thoracic aortic aneurysms occur on the aorta as it passes through the chest cavity. These are less common than abdominal aneurysms. Small aneurysms generally pose no threat. However, aneurysms increase the risk for: [citation needed] Atherosclerotic plaques to form at the site of the aneurysm, which causes further weakening of the artery wall.
A thoracic aorta diameter greater than 3.5 cm is generally considered dilated, whereas a diameter greater than 4.5 cm is generally considered to be a thoracic aortic aneurysm. [4] Still, the average diameter in the population varies by for example age and sex.
However, morbidity and mortality rates for surgical repair of the aorta for this condition are among the highest of any cardiovascular surgery. [3] For example, surgery is associated with a high rate of paraplegia , [ 11 ] because the spinal cord is very sensitive to ischemia (lack of blood supply), and the nerve tissue can be damaged or killed ...