This glossary is available to help you understand complicated terms you will see on this website and may hear from your cardiologist, TAVR Specialist, or Heart Valve Team as you learn about severe symptomatic aortic stenosis, also known as heart valve failure. Be sure to check with your doctor if you have any questions.


Aortic Stenosis

One of the most common types of heart valve disease. Narrowing of the aortic valve that prevents normal blood flow and makes the heart work harder. Doctors will typically categorize it as mild, moderate, or severe stage which depends on how damaged your aortic valve is.

Aortic Valve

The valve that controls blood flow from the heart to the aorta (largest artery that carries blood to the rest of the body).


Bicuspid Aortic Valve

An aortic valve that has only two leaflets (instead of three).

Bioprosthetic Valve

Replacement heart valve made of animal tissue.


Echocardiogram (echo)

This diagnostic test uses sound wave technology, or ultrasound, to show video images of the heart to better assess its function.


Heart Failure

When the heart is unable to pump blood to the body’s organs to maintain their function.

Heart Murmur

An abnormal heart sound that may indicate heart valve disease.

Heart Valve Disease

In heart valve disease, one of the valves in your heart doesn't properly work. Aortic stenosis is one of the most common types of heart valve disease, affecting millions of people in the U.S.

Heart Valve Failure

Heart valve failure is another term for severe aortic stenosis. It is dangerous because the aortic valve has severe buildup of calcium, and has a difficult time opening and closing.

Heart Valve Team

A group of qualified healthcare professionals who work together to determine the best treatment plan for each individual patient.


Invasive Procedure

A medical procedure that requires entry into the body, usually by cutting skin and inserting instruments into body.



Triangular-shaped flaps of tissue within heart valves that open and close to control blood flow.


TAVR (Transcatheter Aortic Valve Replacement)

A minimally invasive procedure that replaces an unhealthy aortic valve. A medical procedure performed with a small incision and specialized equipment.



A diagnostic test that uses sound waves to look at organs and structures inside the body.