An abdominal aortic aneurysm (AAA) is often called silent because most people feel nothing until the wall of the aorta is dangerously thin. Aortic aneurysm repair is the surgical fix that prevents that wall from rupturing, an event that carries an out-of-hospital mortality above 80% according to the CDC. Two main approaches dominate modern care: minimally invasive endovascular repair (EVAR) and traditional open surgery. Knowing how each works, who qualifies, and what recovery looks like helps you have a clearer conversation with your vascular surgeon.
What Aortic Aneurysm Repair Is and Who Needs It
An aortic aneurysm is a balloon-like bulge in the aorta, the largest artery in the body. When the bulge grows past a critical size, the wall thins and rupture risk climbs. Repair reinforces or replaces the weakened section before that happens.
Most surgeons follow the size and growth thresholds described by the National Heart, Lung, and Blood Institute: elective repair is commonly offered for abdominal aneurysms 5.5 cm or larger in men, 5.0 cm or larger in women, or any aneurysm growing more than 0.5 cm in six months. Symptomatic aneurysms (back or abdominal pain) and ruptured aneurysms are surgical emergencies. Thoracic aortic aneurysms have separate thresholds, often 5.5–6.0 cm depending on cause.
Risk factors for AAA include age over 65, smoking, male sex, family history, and atherosclerosis. The USPSTF recommends one-time ultrasound screening for men aged 65–75 who have ever smoked.
How the Procedure Is Performed
Two approaches are widely used. EVAR (endovascular aneurysm repair) is the less invasive option. Through small groin incisions, the surgeon threads a stent graft up through the femoral arteries and deploys it inside the diseased aorta. Blood now flows through the graft instead of pushing on the weak wall. The procedure is usually done under general or regional anesthesia and takes two to four hours, per Cleveland Clinic.
Open AAA repair is the older but still vital option for complex anatomy. The surgeon makes a long abdominal or flank incision, clamps the aorta, removes the diseased segment, and sews in a fabric graft. Operating time runs three to six hours, with general anesthesia and a controlled hospital stay in an intensive care unit afterward. According to the Society for Vascular Surgery, EVAR now accounts for roughly 80% of elective AAA repairs in the United States. Thoracic endovascular aneurysm repair (TEVAR) uses similar principles for chest aneurysms.
Preparation and What to Expect on the Day
Pre-operative workup typically includes a CT angiogram to map the aneurysm and confirm whether the anatomy allows EVAR, plus an echocardiogram, pulmonary tests, and blood work. Patients are often asked to stop smoking, control blood pressure, and adjust blood thinners under guidance. Statins and beta-blockers are commonly continued.
On the morning of surgery you fast from midnight, arrive a few hours early, and meet anesthesia. EVAR patients usually walk into the operating room and home within one to two days. Open repair involves an arterial line, urinary catheter, and a planned ICU stay of one to two nights followed by step-down care. Cardiac risk is the dominant peri-operative concern for both, which is why pre-op cardiology clearance is common in patients with coronary disease. Many people pair their workup with a refresher on broader cardiovascular issues from the medical conditions reference library.
Recovery Timeline and Rehabilitation
EVAR recovery is fast. Most patients go home in 24–48 hours, walk normally within a week, and return to office work in two to three weeks. Heavy lifting is restricted for four to six weeks while the groin access sites fully heal. Lifelong surveillance imaging (CT or duplex ultrasound) is required to watch for endoleaks, where blood seeps around the graft.
Open repair takes longer. Hospital stays average five to eight days, full abdominal healing runs six to twelve weeks, and most people resume normal activity by three months. The trade-off is durability — open grafts rarely require reintervention, while EVAR has a 15–20% reintervention rate over ten years according to long-term randomized trial data. Cardiac rehab and a Mediterranean-style diet are commonly advised regardless of approach.
Risks, Complications, and Outcomes
Elective EVAR carries a 30-day mortality of roughly 1–2%, while elective open repair runs 3–5%, per Mayo Clinic data. Ruptured aneurysm repair, by contrast, has operative mortality near 40–50%. Common complications include bleeding, stroke, kidney injury from contrast dye, leg ischemia, graft infection, and — for EVAR specifically — endoleaks and graft migration.
When to seek emergency care: Call 911 if you experience sudden severe abdominal or back pain, a pulsating mass in the abdomen, fainting, cold or pale legs, blood in the urine, or shortness of breath after aortic repair. These can signal rupture, graft thrombosis, or aortic dissection, all of which are life-threatening.
Alternatives and When Surgery May Wait
Small aneurysms (typically below 5.0–5.5 cm) are usually monitored with ultrasound every 6–12 months rather than repaired. Blood pressure control, smoking cessation, and statin therapy slow growth. Aneurysms that remain stable can be watched indefinitely. The UK Small Aneurysm Trial showed that early surgery for sub-5.5 cm aneurysms offered no survival benefit over surveillance.
Complex aneurysms involving the renal arteries or aortic arch may require fenestrated EVAR (fEVAR) or hybrid procedures only available at specialized centers. Patients who are not surgical candidates due to severe heart or lung disease are sometimes managed medically with strict blood pressure control. If you are also being evaluated for vascular disease elsewhere, the planning often overlaps with a carotid endarterectomy workup or coronary stenting.
Cost Considerations
Without insurance, EVAR typically runs $30,000 to $60,000 in the United States, while open AAA repair averages $40,000 to $80,000 due to the longer hospital stay. Stent grafts alone cost $10,000–$20,000. With Medicare or commercial insurance, out-of-pocket costs are usually limited to deductibles, co-insurance, and any out-of-network anesthesia or facility fees. Asking for an itemized estimate before surgery and confirming in-network status for the hospital, surgeon, and anesthesiologist can prevent balance-billing surprises. Our broader healthcare costs guide walks through how to shop large surgical bundles.
Frequently Asked Questions
How long does an EVAR last?
Modern stent grafts are designed to last decades, but follow-up imaging is required for life. Roughly 15–20% of EVAR patients need a secondary procedure within 10 years to fix endoleaks or graft migration, compared with under 5% for open repair.
Can an aortic aneurysm shrink without surgery?
True shrinkage is rare. With aggressive blood pressure control, smoking cessation, and statins, growth often slows to under 0.2 cm per year. Most aneurysms either stay stable or grow slowly until they reach the surgical threshold.
What is the recovery like after open AAA repair?
Expect five to eight days in the hospital, four to six weeks of fatigue, and three months before returning to heavy activity. Walking is encouraged from day one to prevent blood clots and pneumonia. Most patients resume driving at four to six weeks once narcotic pain medication is no longer needed.
Will I need lifelong follow-up after aortic aneurysm repair?
Yes, especially after EVAR. Surveillance imaging at one month, six months, twelve months, and then annually is standard. Open repair patients need imaging less frequently but are still monitored for new aneurysms elsewhere in the aorta.
The Bottom Line
Aortic aneurysm repair has shifted dramatically toward minimally invasive EVAR for eligible patients, but open surgery remains the durable option for complex anatomy and younger patients. Anatomy, cardiac risk, and lifestyle goals all influence the right choice. Ask your vascular surgeon how your specific aneurysm size, location, and CT measurements affect candidacy for EVAR, what their center’s 30-day mortality and reintervention rates are, and what surveillance imaging schedule you should expect afterward.