TAVI and TAVR: Minimally Invasive Aortic Valve Replacement

TAVI and TAVR are two names for the same minimally invasive procedure used to replace a narrowed aortic valve, most often in people with severe aortic stenosis. The procedure can improve blood flow from the heart and may offer an alternative to open-heart surgery for carefully selected patients.

Overview

TAVI and TAVR stand for transcatheter aortic valve implantation and transcatheter aortic valve replacement. The terms are often used interchangeably. Both describe a procedure in which a new biological valve is placed inside the diseased aortic valve using a thin tube called a catheter, without removing the old valve in the way that is done during open-heart surgery.

The aortic valve sits between the heart’s main pumping chamber, the left ventricle, and the aorta, the large blood vessel that carries oxygen-rich blood to the body. When this valve becomes severely narrowed, a condition called aortic stenosis, the heart must work harder to pump blood forward. Over time, this can lead to symptoms and can affect heart function.

TAVI/TAVR has become an important treatment option for many people with severe aortic stenosis. It is considered minimally invasive because it is usually performed through an artery, most often in the groin, rather than through a large chest incision. However, it is still a major heart procedure that requires detailed planning, advanced imaging, and care from an experienced multidisciplinary heart team.

When TAVI/TAVR May Be Recommended

TAVI/TAVR is most commonly recommended for patients with severe aortic stenosis when the valve narrowing is causing symptoms or when tests show that the heart is under strain. Symptoms may include shortness of breath, chest discomfort, dizziness, fainting, fatigue, reduced exercise capacity, or swelling in the legs. Some people adapt their activities gradually and may not realize how limited they have become until they are evaluated.

The decision is not based on age alone. Doctors consider the severity of valve disease, the patient’s symptoms, heart function, anatomy of the valve and blood vessels, other medical conditions, frailty, previous heart surgery, and personal treatment goals. TAVI/TAVR may be suitable for people at high surgical risk, and it is also used in selected intermediate- and low-risk patients when the expected benefits and valve durability are appropriate.

Not every patient is a candidate for TAVI/TAVR. Some people may be better served by surgical aortic valve replacement, especially if they need other heart procedures at the same time, have certain valve or aortic anatomy, or require a valve choice that is more suitable for long-term durability. A shared decision-making discussion with a heart team helps align the treatment plan with medical findings and patient preferences.

How the Procedure Works

During TAVI/TAVR, the replacement valve is compressed onto a delivery system and guided to the heart through a catheter. The most common access route is transfemoral, meaning the catheter enters through the femoral artery in the groin. If the femoral arteries are not suitable, the team may consider other access routes, such as through an artery near the shoulder or, less commonly, another carefully selected pathway.

Once the new valve reaches the diseased aortic valve, it is positioned with the help of real-time imaging. Depending on the valve type, it may expand on its own or be expanded with a balloon. The new valve pushes the narrowed old valve leaflets aside and begins working immediately to improve blood flow from the heart to the aorta.

The procedure may be performed under general anesthesia or conscious sedation, depending on the patient’s condition and the hospital’s approach. Throughout the procedure, the medical team monitors heart rhythm, blood pressure, oxygen levels, imaging findings, and valve performance. Many patients spend time in a cardiac care or monitored unit afterward so the team can observe recovery closely.

Tests and Heart Team Evaluation

A careful evaluation is essential before TAVI/TAVR. The goal is to confirm the diagnosis, understand the patient’s anatomy, estimate risks, and choose the safest access route and valve size. The process usually involves a cardiologist, cardiac surgeon, imaging specialists, anesthesiology team, nurses, and rehabilitation or geriatric specialists when needed.

Common tests include echocardiography to measure valve narrowing and heart function, electrocardiography to assess rhythm, blood tests to check general health, and computed tomography angiography to map the aortic valve, aorta, and blood vessels. Coronary angiography may be performed to look for blockages in the heart arteries, especially if symptoms or risk factors suggest coronary artery disease.

The evaluation also looks beyond the heart valve. Kidney function, lung disease, mobility, nutrition, cognitive health, previous strokes, bleeding risk, dental health, and current medications can all influence the treatment plan. This broader assessment helps the team anticipate recovery needs and reduce preventable complications.

Benefits, Risks, and Possible Complications

For suitable patients, TAVI/TAVR can relieve the obstruction caused by a narrowed aortic valve and improve symptoms such as breathlessness, fatigue, and reduced activity tolerance. Compared with traditional open-heart surgery, it often involves a smaller access site, less physical trauma, and a shorter hospital stay. These advantages can be especially meaningful for older adults or people with other health conditions.

Like all heart procedures, TAVI/TAVR has risks. The heart team discusses these in the context of each patient’s medical profile. Possible complications include bleeding, damage to blood vessels, stroke, heart rhythm problems, kidney injury, infection, leakage around the new valve, valve malposition, or the need for a permanent pacemaker. In some cases, an unexpected surgical or catheter-based intervention may be required.

Patients can support safer care by sharing a complete medication list, including blood thinners and supplements, reporting allergies, and following instructions about eating, drinking, and medications before the procedure. After the procedure, warning signs such as new chest pain, severe shortness of breath, fainting, sudden weakness, speech difficulty, fever, wound redness, or significant bleeding should be reported promptly.

Recovery and Follow-Up Care

Recovery after TAVI/TAVR varies, but many patients are encouraged to sit up, walk, and resume light activity relatively soon under supervision. The hospital team checks the access site, heart rhythm, blood pressure, kidney function, and valve performance before discharge. Some patients go home within a few days, while others need a longer stay depending on overall health and recovery progress.

After returning home, patients usually receive instructions about wound care, activity, bathing, driving, medications, and follow-up appointments. It is important not to stop or change prescribed antiplatelet or anticoagulant medicines without medical advice. A gradual return to activity is often recommended, and cardiac rehabilitation may help improve strength, confidence, and exercise tolerance.

Long-term follow-up is essential because the replacement valve must be monitored over time. Echocardiograms are used to check valve function, blood flow, and heart performance. Patients should also tell dentists and doctors that they have a replacement heart valve, because preventive measures may be needed before certain procedures to reduce the risk of valve infection.

Prevention, Self-Care, and When to See a Doctor

Aortic stenosis cannot always be prevented, particularly when it is related to aging or a congenital bicuspid aortic valve. However, general heart-healthy habits can support overall cardiovascular health. These include not smoking, controlling blood pressure and cholesterol, managing diabetes, staying physically active as advised, eating a balanced diet, and attending regular medical check-ups.

People diagnosed with mild or moderate aortic stenosis should keep scheduled cardiology visits even if they feel well. Symptoms can develop gradually, and routine echocardiography helps doctors monitor whether the valve narrowing is progressing. Patients should seek medical advice if they notice new shortness of breath, chest pressure, dizziness, fainting, unusual fatigue, palpitations, or swelling in the ankles or legs.

Anyone being considered for TAVI/TAVR should have an individualized evaluation in a center experienced in structural heart disease. Acibadem International’s multidisciplinary specialists and JCI-accredited hospitals provide diagnosis and treatment for international patients with aortic valve disease, including TAVI/TAVR when clinically appropriate. A qualified doctor can explain the options, expected recovery, and follow-up plan based on each person’s condition.

Frequently asked questions

Are TAVI and TAVR the same procedure?

Yes. TAVI means transcatheter aortic valve implantation, while TAVR means transcatheter aortic valve replacement. Both terms describe placing a new aortic valve through a catheter, usually to treat severe aortic stenosis.

Who is a good candidate for TAVI/TAVR?

Candidates are usually people with severe aortic stenosis who have symptoms or evidence of heart strain. Suitability depends on valve anatomy, blood vessel size, surgical risk, other medical conditions, and expected long-term benefit. A heart team evaluation is needed before a recommendation is made.

Is TAVI/TAVR open-heart surgery?

No. TAVI/TAVR is a catheter-based procedure and usually does not require opening the chest or using a heart-lung machine. It is less invasive than traditional surgical valve replacement, but it remains a major cardiac procedure requiring specialist care.

How long does recovery take after TAVI/TAVR?

Recovery is different for each patient, but many people begin walking soon after the procedure and leave the hospital within a few days if stable. Full recovery depends on age, fitness, other health conditions, and any complications. Follow-up visits and echocardiograms are important parts of recovery.

How long does a TAVI/TAVR valve last?

TAVI/TAVR valves are biological valves, and their durability is monitored over time with regular imaging. Longevity can vary depending on age, valve type, anatomy, and overall health. Patients should discuss expected durability and future treatment options with their cardiologist.

What are the main risks of TAVI/TAVR?

Possible risks include bleeding, vascular injury, stroke, heart rhythm problems, kidney injury, infection, leakage around the valve, or the need for a pacemaker. The individual risk level varies. The heart team reviews these risks before the procedure and takes steps to reduce them where possible.

References

• American Heart Association
• European Society of Cardiology
• American College of Cardiology
• Society of Thoracic Surgeons
• National Institute for Health and Care Excellence

This article is for general information only and is not a substitute for professional medical advice. Please consult a qualified doctor about your individual situation.