“EVAR transformed aortic surgery. A procedure that once meant a 10-day ICU stay and a 5% mortality can now be done through two small groin punctures, with patients home in 2 days.”
Written by Dr Rahul Agarwal, Consultant Vascular & Endovascular Surgeon
CARE Hospitals, Banjara Hills, Hyderabad
When an aortic aneurysm reaches the threshold for repair, the choice between EVAR (endovascular aneurysm repair) and open surgical repair is one of the most important decisions in vascular surgery. Both are effective at excluding the aneurysm from blood flow and preventing rupture, but they differ significantly in recovery, risk profile, and long-term surveillance requirements.
🦧 EVAR — Endovascular Aneurysm Repair
EVAR deploys a stent-graft — a fabric tube reinforced by a metal scaffold — inside the aorta through two small groin punctures. The graft lines the aneurysm from the inside, diverting blood flow through the graft rather than the aneurysm sac. Over time, the sac thromboses and shrinks.
Advantages: No abdominal incision. Faster recovery (home in 2–3 days). Lower 30-day mortality. Suitable for high-risk surgical patients. Performed under local or regional anaesthesia in many cases.
Disadvantages: Requires suitable aortic anatomy (adequate “neck” below the renal arteries and access vessels). Needs lifelong surveillance CT scans. Risk of endoleak — blood continuing to flow into the aneurysm sac around the graft — which may require re-intervention. The aneurysm sac is not removed.
💉 Open Surgical Repair
Open repair involves a large abdominal incision, clamping the aorta above the aneurysm, opening the sac, and suturing a synthetic graft in place. The graft is sewn directly to the aorta — no metal components involved.
Advantages: Durable repair — once done correctly, no ongoing surveillance CT is required other than standard follow-up. Not anatomy-dependent. Lower risk of re-intervention in the long term. Aneurysm sac is definitively excluded.
Disadvantages: Major operation requiring general anaesthesia. Hospital stay 5–7 days. Higher 30-day mortality than EVAR in fit patients (though equivalent in medium-term outcomes). Longer recovery (6–8 weeks). Not ideal for high-risk cardiac or respiratory patients.
📊 Long-Term Outcomes
Long-term survival is equivalent between EVAR and open repair. EVAR has lower early mortality but higher re-intervention rates due to endoleaks and graft migration. Open repair has higher early mortality but more durable long-term results with fewer re-interventions. For younger, fit patients with good anatomy and long life expectancy, open repair may be preferred. For older, higher-risk patients, EVAR is clearly superior.
❓ FAQ
Will I need lifelong CT scans after EVAR?
Yes. Standard EVAR follow-up requires CT angiography at 1 month, 12 months, and annually thereafter to detect endoleaks and monitor sac size. This lifelong surveillance is an important commitment before choosing EVAR.
My aneurysm is 5.8 cm. Which repair is right for me?
This depends on your age, fitness, aortic anatomy, and the surgical team’s expertise. Both options should be discussed at a multidisciplinary meeting with your vascular surgeon, anaesthetist, and cardiologist.
💡 Key Insight: EVAR is not “easier” — it is differently demanding. The technical complexity is in the planning, device selection, and long-term surveillance. Choosing an experienced EVAR centre is as important as choosing EVAR itself.
📖 Related: Aortic Aneurysm Guide | Complete Guide to Vascular Surgery
About the Author 🧑🏻⚕️
Dr Rahul Agarwal is a Consultant Vascular & Endovascular Surgeon at CARE Hospitals, Banjara Hills, Hyderabad.