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What is endovascular aneurysm repair (EVAR)?

Endovascular aneurysm repair is a less invasive way than open surgery to repair an aneurysm in the blood vessel.

Endovascular aneurysm repair (EVAR) is a minimally invasive (without a large abdominal incision) procedure performed to repair an abdominal aortic aneurysm—a bulging, weakened area in the wall of the aorta (the largest artery in the body). EVAR may be performed in an operating room, radiology department, or a catheterization laboratory. The physician may use general anesthesia or regional anesthesia (epidural or spinal anesthesia). The physician will make a small incision in each groin to visualize the femoral arteries in each leg. With the use of special endovascular instruments, along with x-ray images for guidance, a stent-graft will be inserted through the femoral artery and advanced up into the aorta to the site of the aneurysm.

A stent-graft is a long cylinder-like tube made of a thin metal framework (stent), while the graft portion is made of various materials such as Dacron or polytetrafluoroethylene (PTFE) and may cover the stent. The stent helps to hold the graft in place. The stent-graft is inserted into the aorta in a collapsed position and placed at the aneurysm site. Once in place, the stent-graft will be expanded (in a spring-like fashion), attaching to the wall of the aorta to support the wall of the aorta. The aneurysm will eventually shrink down onto the stent-graft.

Dr. Mark J. Russo, MD
Cardiothoracic Surgeon

An endovascular aneurysm repair is a treatment for aneurysms of the descending (thoracic and abdominal) aorta. It is similar to the approach that is used for a cardiac catheterization of the coronary arteries. This procedure requires only small incisions in the groin. Then the surgeon inserts a catheter through the femoral artery in the groin and with the use of x-ray guidance and specially designed instruments, the aneurysm can be repaired from inside the aorta by inserting a tube, called a stent-graft. This is possible because the tube, or stent graft, is delivered through the catheter in a collapsed state and then expanded at the site of the aneurysm.

The tube replaces and reinforces the diseased aortic wall, ensuring continuity of blood flow while preventing further expansion of the aorta, aortic rupture, and/or aortic dissection.

The potential benefits of the procedure include less risk, a shorter hospital stay, and a more rapid recovery.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.