Thoracic aortic aneurysm repair (Repair of thoracic aortic aneurysm (open surgery or TEVAR))

What is thoracic aortic aneurysm repair?

The aorta is the body's main artery, carrying blood from the heart. A thoracic aortic aneurysm is a weakened section in the chest part of the aorta that has stretched and bulged. If it grows large, it can tear (dissect) or burst (rupture), which is life-threatening. Repair aims to fix or reinforce the weak section before that happens.

There are two main ways to repair it. Open surgery involves opening the chest, stopping blood flow through the affected part with clamps and replacing it with a fabric tube (graft); for the part nearest the heart this is heart surgery and may also involve the aortic valve or the heart's own blood vessels. TEVAR (thoracic endovascular aortic repair) is a keyhole approach where a covered stent-graft is passed up from an artery in the groin and placed inside the aorta to line and reinforce it.

Not every aneurysm needs surgery. Small, stable aneurysms are usually watched with scans and managed by controlling blood pressure, because the risk of the operation can outweigh the risk of the aneurysm until it reaches a certain size or grows quickly. Guidelines commonly consider repair when the ascending aorta reaches around 5.5cm (smaller if there is an inherited aortic condition or other risk factors), and at larger sizes for the descending aorta.

The decision depends on the size, location and growth of the aneurysm, your age and health, and any inherited condition. It is usually made by a specialist aortic team. Repair lowers the risk from the treated section but does not cure the underlying tendency, so the rest of the aorta still needs monitoring.

Types & techniques

There isn't one single operation. The right approach depends on you — which is something to discuss with your surgeon.

Open surgery vs TEVAR

TEVAR is less invasive but needs close lifelong imaging and can sometimes need further procedures. Your aortic team will advise which is safer for you.

Preparing for your surgery

• Expect detailed imaging (usually CT scans) so the team can plan the size, type and approach of the repair.
• Have your fitness for surgery assessed, including heart, lung and kidney function and any other conditions.
• Tell the team about all medicines, especially blood thinners and antiplatelets, and any allergies including to contrast dye.
• Get blood pressure well controlled, as this is central to managing an aneurysm before and after repair.
• Stop smoking as early as possible, as it harms the aorta, the lungs and healing.
• Discuss any inherited aortic condition, as this affects the plan and may mean screening relatives.
• Arrange substantial help at home and time off work, especially for open surgery.
• Ask whether the operation is planned (elective) or more urgent, as this changes the risks.

What happens

Both types of repair are done under general anaesthetic in a specialist centre.

For open surgery, the surgeon opens the chest, and for repairs near the heart uses a heart-lung bypass machine to take over the circulation. Blood flow through the affected part of the aorta is stopped with clamps, the weakened section is removed or opened, and a fabric tube graft is stitched in. Repairs of the arch may need special techniques to protect the brain, and descending repairs need care to protect the spinal cord.

For TEVAR, the surgeon makes a small access in an artery in the groin, passes a covered stent-graft up inside the aorta under X-ray guidance, and opens it across the weak section so blood flows through the graft rather than against the weak wall.

After open surgery you will usually spend time in intensive care or a high-dependency unit, with drains, monitoring and support while you recover. After TEVAR the stay is usually shorter. The length of the operation depends on the location and complexity of the aneurysm.

Is this operation right for me?

A good consultation should explore whether it's the right choice for you now — including reasons to wait or consider something else.

Before you decide

Use this as a shared-decision checklist. The aim is not just “can this be done?”, but whether it is right for you, now, with the risks and alternatives clearly understood.

Anaesthetic choices

The safest option depends on the operation, your health, the facility and your surgeon/anaesthetist. Ask what is planned and why.

This is high-stakes surgery, and the most feared complications are stroke, spinal-cord injury (which can cause leg weakness or paralysis) and death. Open repair of the descending aorta has a particular spinal-cord risk, and arch repairs carry stroke risk because of the brain's blood supply. Risk rises sharply for emergency operations on a tearing or bursting aneurysm compared with planned surgery, and for aneurysms extending into the arch or abdomen. Ask your aortic team for your own estimated risk based on the location, size and approach, and on your overall health.

Published figures to discuss

Risk varies greatly with the location of the aneurysm (ascending, arch or descending), whether the operation is planned or an emergency, the type of repair, your age and your other health problems. The figures below are broad anchors from modern reviews of descending thoracic/thoracoabdominal repair and should not be applied to every aortic operation; emergency repair and arch/root surgery have different risk profiles.

These are literature figures, not a personalised prediction. Your own risks and likely benefits depend on your circumstances, your health, and how your care is carried out and followed up.

Recovery — what to expect, and when

Recovery depends heavily on the type of repair. Open surgery is major surgery with intensive-care time and weeks to months of recovery, while TEVAR is usually less demanding, though both need lifelong monitoring of the rest of the aorta.

• Tiredness and reduced stamina that improve gradually over weeks to months
• Wound or chest discomfort that eases as healing progresses
• Some breathlessness on exertion early on after open surgery
• Emotional ups and downs, which are common after major surgery

Aftercare

• Take blood-pressure and other medicines exactly as prescribed; blood-pressure control protects the aorta.
• Follow advice on wound care and watch for signs of infection at the chest or groin.
• Avoid heavy lifting and straining while the chest or access site heals, as advised.
• Build activity up gradually and take part in cardiac rehabilitation if it is offered.
• Do not smoke, as it harms the aorta, lungs and healing.
• Attend all follow-up scans, which are lifelong and especially important after TEVAR.
• Know the warning signs of a tear or graft problem and seek emergency help if they occur.

• Substantial help arranged at home, especially after open surgery
• Blood-pressure and other medicines organised and understood
• Time off work planned (weeks to months for open surgery)
• Transport arranged, as you should not drive for a period
• Follow-up scan appointments booked
• Cardiac rehabilitation place arranged if offered
• Emergency plan and warning signs written down

Scars and how they heal

Open surgery leaves a scar from the chest incision, either down the breastbone or along the side of the chest, which fades over months but remains visible. TEVAR leaves small wounds or puncture sites in the groin that heal as smaller marks.

⚠ Get urgent help if…

• Sudden severe chest, back or tummy pain, often described as tearing — call 999, as this can mean a tear or rupture
• Fainting, severe breathlessness or collapse
• Signs of stroke: face drooping, arm weakness or slurred speech — call 999
• New weakness, numbness or loss of movement in the legs (possible spinal-cord problem)
• Coldness, pain, paleness or numbness in a leg or foot
• Spreading redness, swelling, heat or discharge from a wound, or a high temperature
• Coughing up blood or difficulty swallowing

Who to contact: your surgeon or clinic first (keep their number to hand). For urgent advice when you can't reach them, call NHS 111. In an emergency, call 999.

General guidance — it doesn't replace the specific advice your surgeon gives you.

Results & realistic expectations

A successful repair reinforces or replaces the weak section of the aorta, greatly lowering the chance of that part tearing or bursting. After open repair the graft is durable; after TEVAR the stent-graft lines the aorta, but it relies on a good seal, which is why close imaging follow-up is needed.

Repair treats the section that was at risk. It does not cure the underlying weakness of the aorta, so other parts can still enlarge over time, and people with an inherited aortic condition remain at risk elsewhere. Lifelong monitoring and blood-pressure control are part of a good long-term result, and a successful operation does not remove the need for them.

Open grafts are generally very durable and can last for many years. TEVAR stent-grafts also last well but are more likely to need further attention over time, for example if a leak develops around the graft (endoleak) or the graft shifts, which is why follow-up scanning is closer and lifelong. In all cases the rest of the aorta keeps its underlying tendency, so the wider aorta is monitored and blood pressure controlled to protect it.

Combining with other procedures

Repairs near the heart may be combined with aortic valve surgery or with reattaching the heart's own arteries. Complex aneurysms may need hybrid procedures combining open and keyhole techniques. People with an inherited aortic condition often have screening of relatives and monitoring of the whole aorta. Your aortic team will explain what is planned in your case.

Follow-up & long-term care

After discharge you will have wound and recovery checks, and regular imaging (usually CT or MRI) to monitor the graft and the rest of the aorta. Follow-up is lifelong and is closer after TEVAR. Blood-pressure control and, where relevant, screening of relatives are part of ongoing care. Seek emergency help for sudden severe chest or back pain rather than waiting for a routine appointment.

• Keep blood pressure well controlled for life to protect the aorta.
• Attend lifelong follow-up scans, more frequently after TEVAR.
• Do not smoke, and manage cholesterol and other cardiovascular risk factors.
• Report any inherited aortic condition so relatives can be screened.
• Carry information about your repair and know the warning signs of a tear.

Revision and secondary surgery reality

• TEVAR can need further procedures, for example if a leak around the graft (endoleak) develops.
• Open grafts are durable but the rest of the aorta can enlarge and may need treating later.
• Some people need staged operations for complex aneurysms involving the arch or abdomen.
• An inherited aortic condition means lifelong surveillance and possible further surgery elsewhere in the aorta.

Ask your surgeon for their own revision rate, what counts as a revision, and what is included in the written aftercare policy.

What good aftercare looks like

• A clear lifelong imaging schedule, especially after TEVAR, with a named point of contact.
• Active blood-pressure management and cardiovascular risk-factor support.
• Cardiac rehabilitation after open surgery where appropriate.
• Written emergency advice for the warning signs of a tear or graft problem.
• Screening and advice for relatives where an inherited aortic condition is identified.

What affects the cost

Costs vary a great deal between people and providers, and we don't publish prices. What matters is understanding what drives the cost and making sure your quote is complete. The main things that affect it:

• Whether open surgery or TEVAR is used, and how complex the repair is (arch and thoraco-abdominal repairs are more involved)
• The surgeon's and anaesthetist's fees and the theatre or catheter-lab and facility fees
• The graft or stent-graft device, including specially shaped (branched/fenestrated) grafts
• Intensive-care or high-dependency time and length of stay
• Pre-operative imaging and fitness assessments
• Lifelong follow-up imaging, which is closer after TEVAR
• The cost of managing a complication or a further procedure if one is needed

• The surgeon's and anaesthetist's fees and the theatre/catheter-lab and facility fee
• The graft or stent-graft device cost
• Intensive-care or high-dependency and inpatient-stay charges
• Pre-operative imaging and assessments
• Lifelong follow-up scans and review appointments
• What happens, and what is charged, if a complication or further procedure (such as for an endoleak) occurs
• The cancellation policy

On the NHS? Assessment, monitoring and repair of thoracic aortic aneurysms are provided on the NHS through specialist aortic teams; private care is generally for choice of consultant or speed of assessment.

You're entitled to your total cost in writing — including aftercare and any revision — before you decide.

Consent traps and marketing red flags

These are not small details. They are often where patients lose choice, time to reflect, or realistic expectations.

Choosing a surgeon safely

• Check your surgeon is on the GMC Specialist Register for this area.
• Make sure they practise at a CQC-registered location, and look for membership of bodies like BAAPS or BAPRAS.
• You're entitled to a two-stage consent process with time to reflect (a cooling-off period). The surgeon who will operate must consent you — not a salesperson.
• Be wary of pressure: time-limited offers, discounts or deposits taken before you've had time to think are red flags, not bargains.
• You're entitled to your total cost in writing — including aftercare and any revision — before you decide.

How Vuemedics verifies every consultant →

Take this to your consultation. A good surgeon will welcome every one of these.

• Where exactly is my aneurysm, how big is it, and how fast is it growing?
• Is open surgery or TEVAR safer for my aneurysm, and why?
• What is my estimated risk of stroke, spinal-cord injury and death for this repair?
• Is this planned surgery, or is my aneurysm at urgent risk of tearing?
• What follow-up scans will I need, and how often, after the repair?
• Could I have an inherited aortic condition, and should my relatives be screened?
• Are you on the GMC Specialist Register for this area, and which Royal College or professional body are you a member of?
• Will you be the surgeon who carries out my operation, and who looks after me afterwards?
• What are the risks for someone like me, and how often do your own patients have a problem or need it repeated or redone?
• What does a realistic result look like — and what can this operation not achieve?
• What are my options, including waiting, doing nothing for now, or choosing a different approach?
• Can I have written information, results and aftercare instructions in a format I can use, including any accessibility or communication support I need?
• What is the total cost in writing, including any follow-ups, and how much time do I have to decide?

Find a verified surgeon for thoracic aortic aneurysm repair

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How we made this page

Medically reviewed by a GMC-registered consultant. Written in plain English, checked against NHS, NICE, GMC and relevant Royal College / specialist-society guidance, and kept under review. No clinic paid to appear on this page, and we publish no pricing. This is general information to help you prepare — it is not a substitute for advice from your own clinician. How we review our guides →

Source hierarchy: UK regulator and NHS/NICE guidance first, then relevant Royal College or specialist-society guidance, then peer-reviewed evidence for procedure-specific figures where available.

Sources & standards: NHS (Liverpool Heart and Chest) — Thoracic aortic aneurysm surgery NHS (Cambridge) — Endovascular (TEVAR) repair of a thoracic aortic aneurysm British Heart Foundation — Aortic aneurysm NICE — Abdominal aortic aneurysm: diagnosis and management (NG156) Complications and management of TEVAR (review) — PMC Surgical intervention criteria for thoracic aortic aneurysms (growth and complications) — PubMed Spinal cord injury after descending thoracic and thoracoabdominal aortic aneurysm repair — meta-analysis

Reviews reflect patients' experience of care, not clinical outcomes. For procedure volumes and outcome data see PHIN.

Last medically reviewed 2026-09-21. Spotted something wrong or out of date? Report an error in this guide.