Health Library

Endovascular Repair of Abdominal Aortic Aneurysm

(Minimally Invasive Repair of Abdominal Aortic Aneurysm; EVAR)

Definition | Reasons for Procedure | Possible Complications | What to Expect | Call Your Doctor

Definition

The aorta is the largest artery in the body. The abdominal part of the aorta is located below the diaphragm. It carries blood to the abdomen, pelvis, and legs. Sometimes, the walls of the aorta weaken and bulge in one area. This is called an abdominal aortic aneurysm (AAA). When the aneurysm reaches a certain size, it may need to be repaired. Endovascular repair of an AAA (EVAR) is done from the inside of the artery. The doctor inserts a stent graft into the area to strengthen it.

Abdominal Aortic Aneurysm

Reasons for Procedure

This procedure is often done to repair AAA when the aneurysm:

Causes physical symptoms (eg, abdominal pain)
Causes complications (eg, clots that travel into the legs)
Reaches a certain size and position that meets criteria for EVAR
Has burst—Surgery must be done right away.

EVAR is now the preferred method to treat AAA. EVAR can result in less pain, shorter hospital stay, fewer complications, and faster recovery time compared to open surgery. However, closer follow-up over many years is needed.

Possible Complications

Your doctor will review a list of possible complications, which may include:

Adverse reaction to anesthesia

Infection

Bruising or bleeding

Damage to blood vessels or organs (possibly requiring open surgery)

Leaking of blood at the graft

Heart attack
Blood clots

Factors that may increase the risk of complications include:

Smoking
Recent or active infection
Recent or chronic illness (eg, kidney disease)
Diabetes
Old age
Heart or lung disease
Bleeding or clotting disorders

Be sure to discuss these risks with your doctor before the procedure.

What to Expect

Your doctor may:

Do a physical exam, blood tests, and imaging tests (eg, CT scan)
Ask about your medical history, including allergies, current medicines, bleeding disorders, and other concerns
Have you meet with an anesthesiologist

Before the procedure:

Do not eat or drink for eight hours prior to the procedure.
Talk to your doctor about your medicines. You may be asked to stop taking some medicines up to one week before the procedure, like:
- Anti-inflammatory drugs (eg, aspirin )
- Blood thinners, such as clopidogrel (Plavix) or warfarin (Coumadin)

Your doctor may use:

General anesthesia —puts the entire body to sleep
Regional anesthesia —blocks pain to a part of the body, may be used with a sedative

You will lie on your back. You will receive medicine to ease pain and relax you. Once you are asleep and sedated, a breathing tube will be inserted into your throat and lungs. Sometimes, regional anesthesia will be used. A breathing tube will not be needed in this case.

The doctor will make small incisions in both sides of the groin. Catheters (thin tubes) will be inserted into the blood vessels and threaded up toward the aneurysm. Contrast dye will be injected through the catheters. The doctor will then guide a stent graft to the site. The graft will be placed into the weakened area and extended into both pelvic arteries. To guide each step, the doctor will use live x-ray images. Your vital signs will be monitored. Once the graft is in place, the doctor will remove the catheters. The incisions will be closed. Sterile bandages will be applied.

You will be taken to the intensive care unit (ICU). If you have a breathing tube, it will be removed. Your vital signs will be closely monitored.

About 2-3 hours

Anesthesia will prevent pain during the procedure. Your doctor will give you medicine to manage the pain during the recovery process. There is little discomfort from the groin incisions.

The usual length of stay is 1-2 days. Your doctor may choose to keep you longer if needed.

At the hospital, you will:

Gradually move around and increase your activity level
Slowly return to eating solid foods, as tolerated

When you return home, do the following to help ensure a smooth recovery:

Keep the incision areas clean and dry. Follow your doctor’s instructions for changing your bandages.
Ask your doctor about when it is safe to shower, bathe, or soak in water.
Take pain medicine as directed.
Ask your doctor which activities are safe for you.
Your condition needs to be carefully monitored. Be sure to go to all of your appointments.

Call Your Doctor

After you leave the hospital, contact your doctor if any of the following occurs:

Redness, swelling, increasing pain, excessive bleeding, or discharge at the incision site

Signs of infection, including fever and chills

New abdominal pain

Back pain

Any change of color or sensation in your legs or feet

Burning, pain, or problems when urinating

Nausea or vomiting

Abdominal cramps or diarrhea
Unusual fatigue or depression
Disorientation or confusion
Numbness or tingling in the legs
Cough
New, unexplained symptoms

Call for medical help or go to the emergency room right away if you have:

Shortness of breath
Chest pain

If you think you have an emergency, call for medical help right away.

American Heart Association

http://www.americanheart.org/

Society for Vascular Surgery

http://www.vascularweb.org/

Canadian Cardiovascular Society

http://www.ccs.ca/home/index_e.aspx/

Canadian Society for Vascular Surgery

http://canadianvascular.ca/

Abdominal aortic aneurysm. Society for Vascular Surgery website. Available at: http://www.vascularweb.org/patients/NorthPoint/Abdominal_Aortic_Aneurysm.html. Updated January 2010. Accessed January 22, 2010.

Abdominal aortic aneurysm (AAA). EBSCO DynaMed website. Available at: http://www.ebscohost.com/dynamed/what.php. Updated January 22, 2010. Accessed January 27, 2010.

Abdominal aortic aneurysm repair. EBSCO Patient Education Reference Center website. Available at: http://www.ebscohost.com/pointOfCare/perc-about. Updated November 2009. Accessed January 25, 2010.

Abdominal aortic aneurism repair. Lancaster General Health website. Available at: http://www.lancastergeneral.org/content/greystone_27195.htm. Accessed January 25, 2010.

Dillon M, Cardwell C, Blair PH, Ellis P, Kee F, Harkin DW. Endovascular treatment for ruptured abdominal aortic aneurysm. Cochrane Database of Systematic Reviews website. Available at: http://www.cochrane.org/reviews/en/ab005261.html. Published January 24, 2007. Accessed January 22, 2010.

Endovascular repair of thoracic aortic aneurysms. Cleveland Clinic website. Available at: http://my.clevelandclinic.org/heart/disorders/aorta_marfan/endovascularaorticaneurysm.aspx. Updated August 2009. Accessed January 22, 2010.

Fotis T, Mitsos A, Perdikides T, et al. Regional Anesthesia versus general anesthesia in endovascular aneurism repair: the surgical nursing interventions. British Journal of Anesthetic and Recovery Nursing. 2009;10(1):11-14.

Minimally invasive surgery repairs potentially fatal aortic aneurysms. UCLA Health Systems website. Available at: http://www.uclahealth.org/body.cfm?xyzpdqabc=0&id=502&action=detail&ref=86. Published September 2006. Accessed February 2, 2010.

Last reviewed March 2013 by Marcin Chwistek, MD

Please be aware that this information is provided to supplement the care provided by your physician. It is neither intended nor implied to be a substitute for professional medical advice. CALL YOUR HEALTHCARE PROVIDER IMMEDIATELY IF YOU THINK YOU MAY HAVE A MEDICAL EMERGENCY. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with any questions you may have regarding a medical condition.