Thoracic Endovascular Aortic Repair (TEVAR)

Introduction

If you or a family member has been told that the thoracic aorta — the large artery that carries blood from the heart down through the chest — needs to be repaired, your doctor may have discussed a procedure called TEVAR. TEVAR stands for thoracic endovascular aortic repair. It is a way of fixing problems in the thoracic aorta from inside the blood vessel, using a fabric-covered metal tube called a stent-graft, without opening the chest.

TEVAR has changed how many thoracic aortic conditions are treated. Procedures that once required a long incision, the use of a heart-lung machine, and weeks in hospital can now often be done through small cuts in the groin, with a shorter hospital stay and a faster return to daily life. It is not the right option for every patient or every aortic problem, but where it fits, it is a well-established alternative to open surgery.

This article explains what TEVAR is, why doctors use it, who is a candidate, what alternatives exist, how the procedure is performed, what recovery looks like, what risks are involved, and what life looks like afterwards. It is written for people who already have a diagnosis — an aneurysm, a dissection, a traumatic injury, or another thoracic aortic problem — and are now planning the next phase of their care.

What Is TEVAR?

TEVAR is a minimally invasive procedure to repair a diseased or injured section of the thoracic aorta from the inside. Instead of opening the chest and replacing the damaged segment with a sewn-in graft, the surgeon delivers a stent-graft — a flexible fabric tube supported by a metal mesh frame — through the arteries in the groin and positions it precisely inside the aorta. Once deployed, the stent-graft expands against the inner wall of the aorta and forms a new channel for blood flow, sealing off the damaged section behind it.

The thoracic aorta is the part of the aorta that lies inside the chest. It has three sections: the ascending aorta (rising from the heart), the aortic arch (curving over the top, where arteries to the brain and arms branch off), and the descending thoracic aorta (running down through the chest before passing into the abdomen). TEVAR was first developed to treat the descending thoracic aorta, where the anatomy is most suited to a straight stent-graft. Newer techniques, including branched and fenestrated devices and hybrid approaches, have extended its use to parts of the arch and the area where the thoracic aorta joins the abdominal aorta.

TEVAR is closely related to EVAR (endovascular aneurysm repair), which treats the abdominal aorta. The principle is the same, but the devices, anatomical challenges, and risks differ because the thoracic aorta sits near the heart, the lungs, and the arteries that supply the brain and the spinal cord.

Why Is TEVAR Performed?

TEVAR is used to treat several distinct conditions of the thoracic aorta. The shared theme is that the aortic wall is weakened, torn, or otherwise compromised, and there is a meaningful risk of rupture, further dissection, or another life-threatening event if it is not repaired.

Thoracic aortic aneurysm

An aneurysm is a bulge in the wall of an artery where the wall has become weak and stretched. In the descending thoracic aorta, aneurysms often grow slowly and silently. Doctors generally consider repair when the aneurysm reaches a size where the risk of rupture starts to outweigh the risk of the procedure — typically around 5.5 to 6.0 cm in diameter for many patients, although thresholds vary based on growth rate, body size, genetic conditions, and symptoms. Major society guidelines, including those from the Society for Vascular Surgery and the American College of Cardiology / American Heart Association, describe these size thresholds in detail. The exact threshold for any individual patient is a clinical decision.

Type B aortic dissection

An aortic dissection is a tear in the inner lining of the aorta that allows blood to track between the layers of the aortic wall, creating a false channel. Dissections that begin in the descending thoracic aorta are called type B dissections. Uncomplicated type B dissections are often managed first with strict blood pressure control. TEVAR is commonly used when the dissection is complicated — for example, when there is rupture, when blood flow to the kidneys, intestines, or legs is compromised, when pain persists, or when the aorta is enlarging rapidly. Increasingly, TEVAR is also being considered in selected uncomplicated cases during the subacute phase, to reduce the risk of late aortic enlargement.

Traumatic aortic injury

Severe chest trauma — most often from high-speed road traffic accidents or falls — can tear the aorta, usually just past the arch. This is a life-threatening injury. Where the anatomy is suitable, TEVAR is now the preferred approach in many trauma centres because it avoids open thoracic surgery in a patient who is often critically unwell from other injuries.

Penetrating aortic ulcer and intramural haematoma

These are less common but related conditions in which the aortic wall is damaged without a classic dissection or aneurysm. A penetrating aortic ulcer is an ulcer in an atherosclerotic plaque that erodes into the aortic wall. An intramural haematoma is a collection of blood within the wall itself. Both can progress to rupture or dissection. TEVAR may be used when these lesions are symptomatic, enlarging, or otherwise high risk.

Other indications

TEVAR is sometimes used for thoracic aortic infections (mycotic aneurysms), aortic fistulas, and certain congenital conditions such as coarctation of the aorta in adults. These are specialised situations, and decisions are made by aortic teams that include vascular surgeons, cardiothoracic surgeons, and interventional radiologists.

Who Is a Candidate?

Not everyone with a thoracic aortic problem is suitable for TEVAR. The decision depends on a careful review of imaging, usually a CT angiogram of the chest, abdomen, and pelvis, along with a full assessment of overall health.

Doctors typically consider the following when deciding whether TEVAR is appropriate:

• Anatomy of the aorta. There needs to be enough healthy aorta above and below the diseased segment for the stent-graft to seal against (the “landing zones”). The aortic curve, diameter, and the position of important branch arteries all matter.
• Access vessels. The arteries in the pelvis and groin must be wide enough and healthy enough to accept the large delivery sheath used to introduce the device. In some patients, an alternative access route is planned in advance.
• Branch vessel involvement. When the diseased segment involves the arch arteries (which supply the brain and arms), or the arteries to the abdominal organs, more complex devices or hybrid procedures may be needed.
• Overall health. Heart, lung, and kidney function all influence the choice between TEVAR and open repair. TEVAR is often favoured in patients who would tolerate open thoracic surgery poorly.
• Underlying connective tissue conditions. In conditions such as Marfan syndrome, Loeys-Dietz syndrome, or vascular Ehlers-Danlos, the aortic wall is intrinsically abnormal. Major guidelines generally favour open surgical repair in these patients when feasible, because long-term durability of endovascular repair is less well established. TEVAR may still be used in selected emergency or bridging situations.
• Age and life expectancy. TEVAR requires lifelong imaging follow-up. The trade-off between immediate procedural risk and long-term durability is part of the conversation.

TEVAR is overwhelmingly an adult procedure. Its use in children is rare and limited to specific anatomical situations in specialist centres.

Alternatives to TEVAR

TEVAR is one option among several. The right choice depends on the underlying condition, the urgency, the aortic anatomy, and the patient's overall health.

Open surgical repair

Open repair of the descending thoracic aorta involves an incision along the side of the chest (a thoracotomy), temporarily clamping the aorta, and replacing the diseased segment with a fabric tube graft sewn in by hand. It is a major operation. Often a heart-lung bypass circuit or other circulatory support is used to protect the spinal cord and other organs during the repair.

Compared with TEVAR, open repair typically involves a longer hospital stay, a longer recovery, and higher short-term risks of complications such as bleeding, respiratory problems, and kidney injury. However, it is a more definitive repair: once healed, the sewn graft does not usually require the same intensity of lifelong imaging surveillance as a stent-graft. For younger patients with good fitness, for connective tissue disorders, and for aortic anatomy that is unsuitable for stenting, open repair remains an important option. Major society guidelines describe specific situations where open repair is preferred.

Medical therapy alone

For uncomplicated type B aortic dissections, smaller aneurysms, and some other conditions, the initial approach is often medical management. This typically includes strict blood pressure control with medications such as beta blockers, treatment of high cholesterol, smoking cessation, and regular imaging follow-up. The aim is to slow disease progression and avoid the risks of any procedure. Many people remain on medical therapy alone for years; some eventually progress to needing TEVAR or open repair.

Hybrid procedures

When the disease involves the aortic arch, a combined approach is sometimes used. The surgeon first surgically reroutes the branch arteries to the head and arms (a process called debranching), and then a stent-graft is deployed to cover the diseased arch. Hybrid procedures broaden the range of patients who can avoid full open arch surgery.

Branched and fenestrated endovascular repair

For complex anatomy involving the arch or the thoraco-abdominal aorta, custom or off-the-shelf devices with side branches or openings (fenestrations) can be used to preserve flow to important arteries while still excluding the diseased segment. These procedures are highly specialised and are performed in centres with specific expertise.

Preparing for TEVAR

Preparation for TEVAR is detailed because the procedure is technically demanding and small details of anatomy matter. In a planned (non-emergency) situation, preparation typically takes place over days to weeks.

Imaging and planning

A high-quality CT angiogram is essential. The team uses it to measure the diameter of the aorta in multiple locations, identify the position of branch arteries, study the curvature, and assess the access arteries in the pelvis. Specialist software is used to plan the size and length of the stent-graft, the exact landing zones, and the angles of approach. For complex anatomy, additional imaging such as MR angiography may be requested.

Cardiac and general assessment

You will usually have:

• An ECG and, often, an echocardiogram to assess heart function
• Blood tests including kidney function, blood count, and clotting
• A review of any chest or lung conditions; sometimes lung function testing
• A review of all medications, especially blood thinners, anti-platelet drugs, and diabetes medications
• An anaesthetic assessment to plan the type of anaesthesia and any specific precautions

Medications and lifestyle

Your team will give specific instructions about which medications to continue and which to pause before the procedure. Blood thinners and certain diabetes medications usually need careful timing. If you smoke, stopping — even shortly before the procedure — helps reduce respiratory complications. Blood pressure should be well controlled in the lead-up.

Discussion of spinal cord protection

One of the specific risks of TEVAR is injury to the spinal cord, because some of the small arteries that feed the spinal cord branch from the thoracic aorta. When a long section of aorta is being covered by the stent-graft, the team may plan a procedure called spinal drainage — placing a small catheter in the lower back to drain cerebrospinal fluid during and after the procedure. This is part of a wider set of spinal-cord protection strategies that may include keeping blood pressure higher than usual after the procedure, careful oxygenation, and staged repairs in selected cases.

The day before and the day of the procedure

You will usually be asked to fast from food and most fluids for several hours before the procedure. The groin areas will be checked and possibly shaved. An intravenous line will be placed, and you may receive antibiotics to reduce infection risk.

In emergencies — ruptured aneurysm, complicated dissection, traumatic aortic injury — this preparation is compressed into hours or minutes. The same principles apply but timing is dictated by the urgency.

What Happens During TEVAR

TEVAR is performed in an operating theatre or a hybrid theatre equipped with high-quality X-ray imaging (fluoroscopy). The team typically includes a vascular surgeon, an anaesthetist, an interventional radiologist or another endovascular specialist, scrub and theatre nurses, and a radiographer.

Anaesthesia

TEVAR is most commonly performed under general anaesthesia, although in selected patients regional or local anaesthesia with sedation may be used. The choice depends on the complexity of the procedure, patient health, and team preference.

Access

The surgeon gains access to the arterial system through the femoral arteries in the groin. This may be done through small surgical cuts (a “cut down”) or through a fully percutaneous technique using specialised closure devices. In some patients with narrow or diseased iliac arteries, alternative access is needed — for example, through an artery in the iliac vessel directly via a small abdominal incision, or by creating a temporary conduit.

Imaging and stent-graft deployment

Through the access sheath, the team passes wires and catheters up the aorta and injects contrast dye to perform an angiogram. This confirms the anatomy and the position of branch arteries. Pressure is often lowered temporarily during deployment to reduce the “windsock” effect of blood flow on the device. The stent-graft, compressed inside its delivery system, is advanced into position. Under live X-ray guidance, the surgeon deploys the device so that it expands and seals against the aortic wall above and below the diseased segment. Additional stent-graft components may be added to extend the repair or to seal landing zones.

Once the device is in place, a completion angiogram is performed to check that blood is flowing properly through the stent-graft and that there is no leak around it.

Closure

The delivery sheath is removed and the access sites are closed — either by direct surgical repair of the artery or with percutaneous closure devices. The procedure typically takes one to four hours for a straightforward repair, but complex cases with branched or fenestrated devices can take longer.

What you may feel afterwards

Most patients wake up in a recovery area or intensive care unit. You may feel some soreness in the groin where access was obtained, and the throat may feel slightly raw from the breathing tube used during anaesthesia. The team will monitor blood pressure carefully, often keeping it within a specific target range to protect the new repair and, in some cases, the spinal cord.

Recovery and Healing

Recovery from TEVAR is generally faster than recovery from open thoracic aortic repair, but it is still a major procedure on a major artery.

In hospital

Most patients are observed in a high-dependency or intensive care unit for the first 24 hours, sometimes longer. Monitoring focuses on:

• Blood pressure, kept in a target range to protect the repair and tissues
• Heart rhythm
• Pulses in the legs and signs of good blood flow
• Neurological checks for any sign of stroke or spinal cord problem, especially weakness in the legs
• Kidney function, since contrast dye and a temporary drop in blood pressure can stress the kidneys
• The access sites in the groin for bleeding, swelling, or signs of infection

Back at home

Once home, recovery continues for several weeks. Common features of this phase include:

• Tiredness. A general reduction in energy is normal for two to six weeks. Daily activity should be paced and gradually increased.
• Groin care. The access wounds need to be kept clean and dry. Mild bruising and tenderness are common. Any spreading redness, increasing pain, swelling, drainage, or a hard, painful lump should be reported to the team.
• Activity restrictions. Heavy lifting and strenuous exertion are usually avoided for several weeks. Walking and light activity are encouraged. Driving is restricted for a period defined by your team and depends on local rules and your overall recovery.
• Blood pressure control. Strict control of blood pressure is one of the most important parts of recovery and continues lifelong. Medications are usually adjusted at follow-up visits.
• Wound healing. Skin closures or stitches at the groin are checked at the first follow-up visit.

Return to work and daily life

People with desk-based work often return within two to four weeks. Physically demanding work may take longer. Each patient's situation is individual and is guided by the operating team.

First follow-up imaging

The first imaging study after TEVAR — usually a CT angiogram — is typically performed at around one month, then again at six and twelve months, and then yearly thereafter. The pattern varies between centres. Imaging looks for proper position of the stent-graft, exclusion of the aneurysm or dissection, and any leaks (endoleaks) around the device.

Risks and Complications

TEVAR is a safer procedure than open thoracic aortic repair in many circumstances, but it carries real risks. Honest information about these risks is part of informed consent.

Risks during and shortly after the procedure

• Stroke. Manipulation of catheters and the deployment of the stent-graft can dislodge fragments of plaque from the aortic wall, which can travel to the brain. The risk is higher when the procedure involves the aortic arch.
• Spinal cord injury and paraplegia. Covering branches that supply the spinal cord can reduce blood flow to it. Spinal cord injury after TEVAR can range from temporary leg weakness to permanent paraplegia. The risk is higher with long coverage of the thoracic aorta, prior abdominal aortic surgery, and certain anatomic factors. Spinal drainage and blood pressure management are used to reduce this risk.
• Access vessel injury. The large delivery sheaths can damage the iliac or femoral arteries, sometimes requiring additional repair.
• Bleeding at the access sites or, less commonly, internally.
• Kidney injury from contrast dye and from temporary drops in blood pressure. Most cases are mild and reversible, but in some patients kidney function does not fully recover.
• Heart events such as a heart attack or rhythm problems, particularly in patients with existing heart disease.
• Death. Mortality risk varies widely with the indication. For planned repair of a thoracic aortic aneurysm in a stable patient, short-term mortality is typically low single digits in most centres. For ruptured aneurysm or emergency repair, the risk is substantially higher.

Later complications

• Endoleak. An endoleak is blood flow into the aneurysm sac despite the stent-graft. Several types exist, depending on where the leak comes from. Some endoleaks resolve on their own; others need further treatment.
• Stent-graft migration. The device may shift over time, especially if the landing zone is short or the aorta enlarges.
• Aortic enlargement. The aorta above or below the stent-graft can continue to enlarge, sometimes requiring an additional procedure.
• Stent-graft infection. Rare but serious. It usually requires both surgical and antibiotic treatment.
• Retrograde type A dissection. A new dissection that travels backwards into the ascending aorta. This is uncommon but serious and may require emergency open surgery.
• Need for re-intervention. A meaningful proportion of patients need an additional endovascular or surgical procedure during the years after TEVAR. This is one of the trade-offs compared with open surgical repair, where re-interventions are less common but the initial procedure is more invasive.

Major society guidelines describe these risks and the strategies used to reduce them in detail. The specific risk for any one patient is shaped by the underlying condition, the anatomy, and overall health, and is best discussed with the operating team.

Life After TEVAR

Life after TEVAR is shaped by two themes: lifelong follow-up of the repair, and lifelong management of the conditions that caused the aortic disease in the first place.

Imaging surveillance

The stent-graft is a medical device sitting inside a major artery. Imaging surveillance — usually CT angiography, sometimes MR angiography in patients where reducing radiation exposure is a priority — is used to detect endoleaks, migration, enlargement, and other issues early, when they can be managed without an emergency. Skipping follow-up imaging is one of the most important risks a patient can take after TEVAR. Even if you feel completely well, the follow-up schedule continues.

Blood pressure control

Long-term, well-controlled blood pressure is one of the most important things you can do to protect the rest of your aorta and the repair. Many people remain on blood pressure medications such as beta blockers, ACE inhibitors, or angiotensin receptor blockers indefinitely. Home blood pressure monitoring is often recommended.

Other cardiovascular risk management

Most people who develop thoracic aortic disease have wider cardiovascular risk. Long-term care typically includes:

• Stopping smoking and avoiding second-hand smoke
• Treatment of high cholesterol, often with statins
• Healthy weight, regular moderate physical activity, and a diet that supports cardiovascular health
• Treatment of diabetes if present
• Regular review of medications and risk factors with a doctor

Physical activity

Most people return to normal daily activities, walking, swimming, cycling, and many forms of work. Heavy resistance exercise — particularly very heavy lifting that involves a Valsalva manoeuvre — raises blood pressure sharply and is generally limited. Specific activity guidance is individualised and is part of the conversation with the team.

Family screening

If you have been diagnosed with a thoracic aortic aneurysm or dissection, especially at a younger age or with features that suggest a genetic cause, first-degree relatives may be offered screening imaging. Some families carry inherited conditions that affect the aorta, and identifying them early in relatives can be life-saving. The decision about whether to pursue genetic testing or family screening is made with a vascular specialist or geneticist.

Emotional adjustment

A diagnosis of thoracic aortic disease, and the experience of going through TEVAR, can be psychologically heavy. Anxiety about “what might happen” is common, particularly around imaging follow-up visits. Many people find it helpful to talk openly with their family, with their team, or with a mental health professional. Returning to a normal, full life is possible for most people after TEVAR, but acknowledging the emotional side is part of recovery.

Frequently Asked Questions

How long does the stent-graft last?

Modern stent-grafts are designed to be permanent implants. They are made of medical-grade fabric (often polyester or PTFE) supported by metal frames (often nitinol or stainless steel). Many patients live for many years, even decades, with a well-functioning stent-graft. However, the device and the aorta around it can change over time, which is why lifelong imaging follow-up is essential.

Will I be able to feel the stent-graft?

No. The stent-graft sits inside the aorta in the chest. You will not feel it, and it does not move when you breathe or change position.

Can I travel, fly, and pass through airport security?

Yes. Stent-grafts do not normally set off airport metal detectors in a problematic way, and flying is not restricted by the device itself. Travel timing after the procedure depends on your overall recovery; most teams advise waiting a few weeks before long-haul flights.

Can I have an MRI scan after TEVAR?

Most modern thoracic stent-grafts are MR-conditional, meaning MRI is safe under specified conditions. Your team will give you a device card with the manufacturer and model. Always show this card before any MRI scan so the radiology team can confirm safety.

Is TEVAR a cure?

TEVAR treats the diseased segment of the thoracic aorta by excluding it from the circulation. It does not cure the underlying condition that weakened the aorta in the first place. The rest of the aorta, the heart, and the arteries throughout the body still need long-term care. That is why lifelong blood pressure control, cardiovascular risk management, and imaging follow-up matter so much.

What happens if a problem is found on follow-up imaging?

Many follow-up findings — small endoleaks, minor changes in aortic size — are observed rather than treated immediately. When a problem needs intervention, it is often handled with a further endovascular procedure (for example, an additional stent-graft component or coil embolisation), avoiding open surgery. Early detection through routine imaging is what makes this possible.

Is open surgery ever needed after TEVAR?

In a minority of cases, yes. This may happen when an endoleak cannot be controlled endovascularly, when there is a serious infection of the stent-graft, or when the aorta continues to enlarge in a way that cannot be addressed with further endovascular techniques. The likelihood depends on the original disease, the anatomy, and the long-term behaviour of the aorta.

What symptoms should make me seek urgent medical attention after TEVAR?

Most recovery is uneventful, but certain symptoms need urgent assessment:

• Severe chest, back, or abdominal pain — especially tearing or ripping pain
• Sudden weakness, numbness, or loss of movement in the legs
• Sudden weakness, slurred speech, drooping face, or other stroke-like symptoms
• Sudden coldness, pain, or colour change in a leg
• Fainting or collapse
• High fever, increasing redness, swelling, or discharge from a groin wound
• Coughing up blood

Any of these should prompt immediate emergency assessment.

Does TEVAR affect life expectancy?

TEVAR is designed to reduce the risk of dying from a thoracic aortic catastrophe such as rupture or complicated dissection. Overall life expectancy after TEVAR depends on the underlying condition, age, and other health problems — particularly heart, kidney, and lung disease. For many patients, TEVAR is a turning point that allows them to live for many years with regular follow-up.

Conclusion

TEVAR is an established, minimally invasive way of treating several serious conditions of the thoracic aorta. For the right patient, with the right anatomy, it offers a smaller incision, a shorter hospital stay, and a faster initial recovery than open surgery. The trade-off is the need for lifelong imaging surveillance and continued attention to the underlying disease and cardiovascular risk factors.

Decisions about whether to have TEVAR, when, and with what device or strategy are individualised and made together with an experienced aortic team. The information here is a foundation for that conversation — not a substitute for it. With careful planning, expert care, and consistent follow-up, most people return to a full and active life after TEVAR.