Heart Disease Health Center

Thoracic or abdominal aortic aneurysms that are large, causing symptoms, or rapidly getting bigger are considered at risk of rupturing. Surgery is usually recommended if any one of these factors is present. Your doctor will consider:

• Whether you need urgent surgery.
• Whether you will be able to withstand a surgery.
• Whether you can avoid surgery, at least for the present.

When making a decision about surgery for an aortic aneurysm, the benefits in relation to the risks of surgery must be considered, as well as the risks of major surgery. People who are at significant risk from surgery may elect to use medical management or another technique such as a stent graft procedure.

Your doctor will closely monitor the size and rate of growth of smaller aneurysms using abdominal ultrasound, computed tomography (CT) scan, or other imaging tests.

Abdominal aortic aneurysms

In men, surgery is typically recommended for abdominal aortic aneurysms that are causing symptoms or that are 5.5 cm or larger in diameter. In women, surgery may be recommended for smaller aneurysms.

Surgery is also recommended for small aneurysms that have grown more than .5 cm in 6 months.

The decision to have surgery, delay surgery, or not have surgery at all depends on other things too. These may include older age or medical problems that make surgery more dangerous.

Surgical repair of abdominal aortic aneurysms

Both traditional (open) surgery and endovascular aortic repair are used to treat abdominal aortic aneurysms. Talk to your doctor about which surgery is best for you.

Traditional (open) surgery. If you have open surgery, your doctor will make a large cut in your chest or belly. Then, your aneurysm will be removed and the damaged portion of your blood vessel will be replaced with a man-made graft. For more information about open surgery, see surgery for an abdominal aortic aneurysm.

Endovascular repair. If you have an endovascular repair, a tube called a stent graft is inserted through an artery in the groin. The stent graft makes a bridge between the healthy parts of the aorta (above and below the aneurysm). Although this procedure works well right away, experts do not know enough about its long-term effects. Because of this, you will need regular X-rays or CT scans for as long as you have the graft. For more information about endovascular repair, see Endovascular repair with a stent for an abdominal aortic aneurysm.

For more information about surgical and endovascular repair, see:

• Questions about surgery for an abdominal aortic aneurysm.
• Complications of surgery for aortic aneurysm.

Thoracic aortic aneurysms

Your doctor will recommend that you have surgery for a thoracic aortic aneurysm based on many things. These include:

• The location of the aneurysm, such as the ascending or descending part of the aorta .
• The size of the aneurysm.
• Whether the aneurysm is part of a genetic problem, such as Marfan's syndrome.
• Whether you need another heart surgery such as a heart valve replacement surgery.