Transcatheter aortic valve replacement (TAVR) is a procedure to replace an aortic valve that is narrowed and doesn't open fully. The aortic valve is between the left lower heart chamber and the body's main artery. Narrowing of the aortic valve is called aortic valve stenosis. The valve problem blocks or slows blood flow from the heart to the body.

TAVR is minimally invasive, which means it uses smaller incisions than open-heart valve surgery. It may be an option for people who can't have heart surgery to replace the aortic valve. TAVR can help reduce chest pain, shortness of breath and other symptoms of aortic valve stenosis.

The decision to have TAVR is made after talking with a team of heart doctors and heart surgeons. The team works together to determine the best treatment option for you.

Transcatheter aortic valve replacement also may be called transcatheter aortic valve implantation (TAVI).

Before the procedure

A health care professional places an IV into your forearm or hand. Medicine called a sedative goes through the IV. The medicine helps you feel relaxed, calm or sleepy. Medicines to prevent blood clots and infection also may be given through the IV.

A member of your health care team may shave any hair from the area on your body where the procedure will take place.

During the procedure

During transcatheter aortic valve replacement (TAVR), a doctor replaces a damaged aortic valve with one made from cow or pig heart tissue. The cow or pig valve is called a biological tissue valve. Sometimes, doctors place a biological tissue valve into an existing one that no longer works.

TAVR uses small surgery cuts and a flexible, hollow tube called a catheter to reach the heart. It's different from open-heart surgery to replace the aortic valve. That surgery requires a long cut down the chest.

To do TAVR, a doctor inserts a catheter into a blood vessel, usually in the groin or chest area. The doctor guides the catheter to the location of the aortic valve in the heart using X-ray or other imaging tools as a guide.

The doctor sends a biologic tissue valve through the catheter and places it in the area of the aortic valve. A balloon on the catheter tip expands to press the new aortic valve into place. Some replacement valves expand without the use of a balloon.

The doctor removes the catheter once the new valve is securely in place.

During TAVR, your health care team carefully watches you. Your blood pressure, heart rate and rhythm, and breathing are constantly checked.

After the procedure

You may spend the night in a hospital's intensive care unit (ICU) so you can be carefully watched after your procedure. How long you stay in the hospital after TAVR depends on many things. Some people who have TAVR might go home the next day.

Before you leave the hospital, your treatment team tells you how to care for any wounds and how to watch for symptoms of infection. Warning signs of infection include fever, increased pain and redness, swelling, draining or oozing at the catheter site.

Several medicines may be prescribed after TAVR, including:

• Blood thinners, also called anticoagulants. This medicine helps prevent blood clots. Your health care team tells you how long you may need to take this medicine. Always take medicines as directed.
• Antibiotics. These medicines treat and prevent bacterial infections. Germs can stick to or infect an artificial heart valve. Most bacteria that cause heart valve infections come from the bacteria in the mouth. Taking good care of your teeth and mouth can help prevent these infections. Get regular dental checkups. Antibiotics may be prescribed for use before certain dental procedures.

Regular doctor's checkups and imaging tests are needed after TAVR to make sure the new valve is working properly. Let your doctor know if you have any new or worsening symptoms, including:

• Dizziness or light-headedness.
• Swelling of the ankles.
• Sudden weight gain.
• Extreme tiredness with activity.
• Swelling, redness, tenderness or other signs of infection at the catheter site.

Seek emergency medical help if you have:

• Chest pain, pressure or tightness.
• Severe, sudden shortness of breath.
• Fainting.