Your Descending Aorta and Thoracic Aorta

The descending aorta begins after the origin of the left subclavian artery from the aortic arch and continues down through the chest to the diaphragm. The segment of aorta below the diaphragm is referred to as the abdominal aorta. The descending aorta provides important blood flow to the spinal cord. The anatomy of the descending aorta makes it more favorable for endovascular approaches in some cases, however, more complex problems will still require open surgery. Aneurysms involving the descending and abdominal aorta are classifed as thoracoabdominal aortic aneurysms.

Your Descending and Thoracic Aorta
Your Descending and Thoracic Aorta
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Figure 1. Your Descending Aorta and Thoracic Aorta

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Thoracoabodominal Aortic Aneurysm (TAAA) – Extent I

This procedure is indicated for aneurysmal disease involving the entire descending aorta and extending below the diaphragm to the first aortic branch of the abdominal aorta. The aorta is replaced from the left subclavian artery to the celiac artery with a Dacron graft.


Thoracoabodominal Aortic Aneurysm (TAAA) – Extent I Pre Thoracoabodominal Aortic Aneurysm (TAAA) – Extent I Post

Interactive 1. Thoracoabodominal Aortic Aneurysm (TAAA) – Extent I

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Thoracoabodominal Aortic Aneurysm (TAAA) – Extent II

This procedure is indicated for aneurysmal disease involving the entire descending aorta and extending below the diaphragm to involve the entire abdominal aorta. The aorta is replaced from the left subclavian artery to the infrarenal aorta with a Dacron graft. The arteries supplying all abdominal organs including the kidneys are reimplanted into the Dacron graft.


Thoracoabodominal Aortic Aneurysm (TAAA) – Extent II Pre Thoracoabodominal Aortic Aneurysm (TAAA) – Extent II Post

Interactive 2. Thoracoabodominal Aortic Aneurysm (TAAA) – Extent II

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Descending Aortic Stent Graft (TEVAR): Extent A

This procedure is indicated for aneurysmal disease involving the proximal descending thoracic aorta. Thoracic Endovascular Aortic Repair (TEVAR) is performed by placing a covered stent graft into the descending thoracic aorta via transfemoral access. The stent graft prevents blood flow from entering the aneurysm sac, resulting in aneurysm sac thrombosis and stabilization and/or regression.


Descending Aortic Stent Graft (TEVAR): Extent A Pre Descending Aortic Stent Graft (TEVAR): Extent A Post

Interactive 3. Descending Aortic Stent Graft (TEVAR): Extent A

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Descending Aortic Stent Graft (TEVAR): Extent B

This procedure is indicated for aneurysmal disease involving the distal descending thoracic aorta. Thoracic Endovascular Aortic Repair (TEVAR) is performed by placing a covered stent graft into the descending thoracic aorta via transfemoral access. The stent graft prevents blood flow from entering the aneurysm sac, resulting in aneurysm sac thrombosis and stabilization and/or regression.


Descending Aortic Stent Graft (TEVAR): Extent B Pre Descending Aortic Stent Graft (TEVAR): Extent B Post

Interactive 4. Descending Aortic Stent Graft (TEVAR): Extent B

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Descending Aortic Stent Graft (TEVAR): Extent C

This procedure is indicated for aneurysmal disease involving the entire descending thoracic aorta. Thoracic Endovascular Aortic Repair (TEVAR) is performed by placing a covered stent graft into the descending thoracic aorta via transfemoral access. The stent graft prevents blood flow from entering the aneurysm sac, resulting in aneurysm sac thrombosis and stabilization and/or regression.


Descending Aortic Stent Graft (TEVAR): Extent C Pre Descending Aortic Stent Graft (TEVAR): Extent C Post

Interactive 5. Descending Aortic Stent Graft (TEVAR): Extent C

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