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Bicuspid Valve Other Name: An Evidence-Based Patient Guide

10 min read Published August 13, 2026
Doctor discussing heart valve health with patients in hospital corridor.
Quick answer

The mitral valve is also called the bicuspid valve because it normally has two leaflets. Bicuspid aortic valve is a separate, lifelong congenital heart valve difference.

Key Takeaways

  • The mitral valve is also called the bicuspid valve because it normally has two leaflets.
  • Bicuspid aortic valve is a separate, lifelong congenital heart valve difference.
  • Many people with a bicuspid aortic valve feel well for years but need regular monitoring.
  • Treatment depends on valve function, symptoms, heart changes, and whether the aorta is enlarged.
  • Valve repair or replacement may be recommended when valve disease becomes severe or causes complications.

Medically reviewed by the Acıbadem International Medical Board — August 14, 2026

Dr. Bahadır Kaynarkaya, MD Dr. Şule Eren, MD

The bicuspid valve other name usually refers to the mitral valve, which has two leaflets and sits between the left upper and lower chambers of the heart. A bicuspid aortic valve is different: it is a congenital condition in which the aortic valve has two leaflets instead of the usual three.

Bicuspid Valve Other Name: The Direct Answer

The bicuspid valve other name is the mitral valve, also known as the left atrioventricular valve. It is called bicuspid because it normally has two thin tissue flaps, called leaflets, that open and close to control blood flow.

It is important not to confuse this normal two-leaflet mitral valve with a bicuspid aortic valve. A bicuspid aortic valve is a congenital heart condition in which the aortic valve has two leaflets rather than the usual three. The two terms sound similar but describe different valves and different clinical situations.

This bicuspid aortic valve patient information guide explains the terminology, how the condition is assessed, and when treatment may be considered. A cardiologist can clarify which valve is being discussed in an individual report or echocardiogram result.

What Is Another Name for the Bicuspid Heart Valve?

What Is Another Name for the Bicuspid Heart Valve? — bicuspid valve other name

Another name for the bicuspid heart valve is the mitral valve. It lies on the left side of the heart, between the left atrium, which receives oxygen-rich blood from the lungs, and the left ventricle, which pumps blood to the body.

When the heart relaxes, the mitral valve opens to allow blood to move from the left atrium into the left ventricle. When the ventricle contracts, the valve closes to prevent blood from moving backward. Its two leaflets are supported by fine cords and heart muscle structures that help the valve close securely.

Conditions affecting the mitral valve include narrowing, called mitral stenosis, leakage, called mitral regurgitation, and mitral valve prolapse. These conditions are distinct from bicuspid aortic valve disease, although a person can have more than one heart condition.

Which Valve Is Called a Bicuspid Valve?

Which Valve Is Called a Bicuspid Valve? — bicuspid valve other name

The valve traditionally called the bicuspid valve is the mitral valve. “Bi” means two, and “cuspid” refers to its leaflets. In standard heart anatomy, it is the only valve that normally has two leaflets; the tricuspid valve has three leaflets, and the aortic and pulmonary valves usually have three cusps.

In everyday medical conversation, however, “bicuspid valve” can sometimes be used informally when someone means a bicuspid aortic valve. This can create understandable confusion. Reading the full wording in a medical report is helpful: “mitral valve” and “bicuspid aortic valve” are not interchangeable terms.

A clinician may use echocardiography, a painless ultrasound examination of the heart, to examine each valve’s structure and movement. It can show whether a valve opens normally, leaks, is narrowed, or has an unusual number of leaflets.

What Are the Different Types of Bicuspid Valves?

In anatomical terminology, the term bicuspid valve refers to the normal mitral valve. In congenital cardiology, the phrase usually relates to bicuspid aortic valve (BAV), a variation in the aortic valve’s formation before birth. Rather than having three separate leaflets, the valve has two functional leaflets, often because two leaflets are partly fused.

Doctors may describe BAV patterns according to which leaflets are fused or the direction of the valve opening. These descriptions help specialists understand valve shape and may assist with planning follow-up or treatment, but they do not alone determine whether someone will develop symptoms or need an intervention.

Bicuspid aortic valves may function well for many years. Over time, some can become narrowed, known as aortic stenosis, or leaky, known as aortic regurgitation. The aorta, the large blood vessel leaving the heart, may also enlarge in some people and should be measured during follow-up.

  • Normally functioning BAV: two leaflets are present, but blood flow remains adequate.
  • BAV with stenosis: the valve is stiff or narrowed, making it harder for blood to leave the heart.
  • BAV with regurgitation: the valve does not seal completely, allowing blood to leak backward.
  • BAV with aortic enlargement: the valve difference occurs alongside widening of part of the aorta.

Is Having a Bicuspid Valve Considered Heart Disease?

A bicuspid aortic valve is considered a congenital heart valve condition because it is present from birth. It does not necessarily mean a person is ill or will develop serious heart disease. Many people have no symptoms and live active lives, particularly when the valve opens and closes effectively and the aorta remains stable.

Regular follow-up matters because valve narrowing, valve leakage, or enlargement of the aorta may develop gradually. The timing of monitoring is individualized. It depends on echocardiogram findings, symptoms, blood pressure, family history, and whether there is any associated aortic change.

BAV can occur in families. A cardiologist may recommend screening echocardiography for first-degree relatives, such as parents, siblings, or children, particularly when a person has BAV together with aortic enlargement. This is a preventive assessment, not a prediction that relatives will necessarily have a problem.

A clear bicuspid aortic valve patient handout can support discussions at appointments, but it cannot replace individualized advice. Patients should ask their care team which valve is affected, how well it functions, the size of the aorta, and when repeat imaging is needed.

Assessment, Monitoring, and Treatment Options

Diagnosis commonly begins with a medical history, physical examination, and echocardiogram. A clinician may hear a heart murmur, although not every murmur indicates significant disease. Echocardiography evaluates the valve’s anatomy, blood flow, severity of narrowing or leakage, heart pumping function, and the visible portions of the aorta.

Additional imaging, such as cardiac magnetic resonance imaging or computed tomography, may be used when a closer view of the aorta is needed. Exercise testing, electrocardiography, and blood tests may also be appropriate in selected situations. Follow-up intervals range from periodic checks to more frequent monitoring when disease is more advanced.

There is no medicine that changes a bicuspid aortic valve into a three-leaflet valve. Medicines may still be used to manage blood pressure, symptoms, or related conditions. Treatment decisions follow established bicuspid valve replacement guidelines and are based on the severity of stenosis or regurgitation, symptoms, changes in heart size or function, and aortic measurements.

When a valve becomes severely narrowed or leaky, a specialist may discuss valve repair or replacement. The most suitable approach depends on age, anatomy, overall health, the condition of the aorta, and long-term treatment goals. If surgery is needed for the valve and the aorta is significantly enlarged, both issues may sometimes be addressed during the same operation.

How Valve Replacement Works: Candidacy, Steps, Recovery, Benefits and Risks

Valve replacement is considered when severe valve disease is causing symptoms, affecting heart function, or creating a meaningful risk of complications. Some people may be candidates for open-heart surgical aortic valve replacement, while selected patients may be evaluated for catheter-based valve replacement. Bicuspid aortic valve anatomy can make catheter procedures more complex, so careful imaging and specialist assessment are essential.

In surgical replacement, the care team uses anesthesia and opens access to the heart through the chest. The diseased valve is removed and replaced with a mechanical or biological valve, and any necessary aortic repair may be performed. In a catheter-based approach, a replacement valve is delivered through a blood vessel, often from the groin, and positioned within the diseased aortic valve. The exact steps vary according to the planned procedure.

Hospital recovery and the return to usual activities differ between procedures and between individuals. Patients typically have monitoring for heart rhythm, blood pressure, wound healing, mobility, and medication needs. Cardiac rehabilitation may support a gradual, supervised return to activity after treatment.

Potential benefits include improved blood flow, reduced symptoms, and protection of heart function when an intervention is appropriately timed. Risks can include bleeding, infection, abnormal heart rhythm, stroke, blood clots, valve-related complications, kidney problems, or a need for further treatment. The care team discusses these risks in the context of the individual’s health and the chosen procedure.

When to Seek Medical Care

People with known bicuspid aortic valve should attend recommended cardiology reviews even when they feel well. Regular monitoring can detect changes before they cause substantial symptoms. Maintaining healthy blood pressure, avoiding tobacco, staying physically active within medical guidance, and discussing exercise plans with a clinician are useful parts of long-term care.

Medical assessment should be arranged promptly for new or worsening shortness of breath, chest discomfort during activity, unusual fatigue, palpitations, lightheadedness, fainting, ankle swelling, or a noticeable reduction in exercise tolerance. These symptoms can have many causes, but they deserve evaluation, especially in someone with a known valve condition.

Emergency care is appropriate for severe or persistent chest pain, sudden severe breathlessness, fainting, or symptoms of stroke such as facial drooping, arm weakness, speech difficulty, or sudden confusion. These symptoms should not be managed by waiting for a routine appointment.

Acibadem International’s multidisciplinary cardiology and cardiac surgery specialists in JCI-accredited hospitals diagnose and treat heart valve conditions for international patients. A qualified cardiologist can provide an individualized monitoring and treatment plan based on imaging results and overall health.

Frequently asked questions

Is the bicuspid valve the same as the mitral valve?

Yes, in standard heart anatomy, the bicuspid valve is another name for the mitral valve. It has two leaflets and controls blood flow between the left atrium and left ventricle. This should not be confused with a bicuspid aortic valve, which affects the aortic valve.

What is a bicuspid aortic valve?

A bicuspid aortic valve is a congenital condition in which the aortic valve has two leaflets instead of the usual three. It may work normally for many years, but it can be associated with aortic valve narrowing, leakage, or enlargement of the aorta. Regular cardiology follow-up helps monitor for these changes.

Can a bicuspid aortic valve cause symptoms?

Some people have no symptoms, especially when the valve is functioning well. Symptoms may develop if the valve becomes significantly narrowed or leaky and can include breathlessness, chest discomfort, dizziness, fainting, fatigue, or reduced exercise tolerance. New symptoms should be discussed with a doctor.

Do all people with bicuspid aortic valve need surgery?

No. Surgery or another procedure is not needed simply because a person has a bicuspid aortic valve. Intervention is considered when valve disease is severe, symptoms occur, heart function is affected, or the aorta reaches a size where repair is advisable.

Should family members be checked for bicuspid aortic valve?

A clinician may recommend echocardiographic screening for first-degree relatives of a person with bicuspid aortic valve, particularly if there is a family history of aortic enlargement or related heart conditions. The decision is individualized. Screening can identify valve or aortic differences early.

Can people with bicuspid aortic valve exercise?

Many people can exercise safely, particularly if the valve and aorta are stable. The appropriate type and intensity depend on valve function, aortic size, blood pressure, symptoms, and the planned activity. A cardiologist can provide personalized guidance, especially before strenuous or competitive exercise.

References

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.

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Dr. Tarek Arafat
Dr. Tarek Arafat, MD
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