Heart Valve Disease: Types, Symptoms, and Treatment Options

An estimated 2.5% of the U.S. population has some form of heart valve disease, and its prevalence increases sharply with age — affecting more than 13% of people over 75, according to the National Heart, Lung, and Blood Institute. Heart valve disease occurs when one or more of the heart’s four valves do not open or close properly, disrupting the efficient flow of blood through the heart and body. Some cases are mild and require only monitoring, while others progress to heart failure and demand intervention. With advances in minimally invasive and transcatheter procedures, outcomes have improved dramatically — but only when the condition is detected and treated at the right time. This guide is part of our comprehensive medical conditions guide.

When valve disease is an emergency — call 911 or go to the nearest emergency department if you have:

Fainting or near-fainting (syncope), especially during or right after exertion. In aortic stenosis this is a particularly dangerous sign and can precede sudden death.
Severe or sudden shortness of breath, or breathlessness that wakes you from sleep or forces you to sit upright to breathe.
Chest pain or pressure, particularly with exertion.
Palpitations with dizziness, or a racing, irregular heartbeat that will not settle.
A persistent or unexplained fever if you have known valve disease or a prosthetic (replacement) valve — this can signal infective endocarditis, an infection of the valve that is a medical emergency and needs urgent evaluation, often with blood cultures and an echocardiogram.

This box does not replace medical advice. If you are unsure whether your symptoms are urgent, err on the side of seeking care.

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The short version: Heart valves can fail in two basic ways — stenosis (narrowing that blocks forward flow) and regurgitation (leakage that lets blood flow backward). Mild disease is monitored; severe, symptomatic disease is treated with valve repair or replacement, increasingly through catheter-based procedures such as TAVR and TEER rather than open surgery. The most important things you can do are keep your monitoring appointments, report new or worsening symptoms promptly, and — if you take a blood thinner for a mechanical valve or valve-related atrial fibrillation — never stop it on your own.

Understanding the Heart’s Valves

The heart has four valves, each positioned at the exit of one of the four chambers. The mitral valve and tricuspid valve are the atrioventricular valves, separating the upper chambers (atria) from the lower chambers (ventricles). The aortic valve and pulmonic valve are the semilunar valves, positioned at the exits to the great arteries. Each valve consists of thin, flexible leaflets (two for the mitral valve, three for the others) that open and close with every heartbeat — over 100,000 times per day.

When functioning properly, these valves ensure that blood flows in one direction: from the veins to the atria, through the ventricles, and out to the lungs and body. When a valve malfunctions, blood flow becomes inefficient. The heart must work harder to compensate, which over time can lead to chamber enlargement, muscle thickening, weakening of the heart, and ultimately heart failure.

The two fundamental types of valve dysfunction are stenosis (narrowing that restricts blood flow through the valve) and regurgitation (leakage that allows blood to flow backward). Some valves can have both problems simultaneously, a combination sometimes called mixed valve disease. The clinical impact depends on which valve is affected, the severity of the dysfunction, and how quickly it has developed — a valve that fails suddenly gives the heart no time to adapt and tends to cause more dramatic symptoms than one that deteriorates gradually over years.

Common Types of Valve Disease

Aortic Stenosis

Aortic stenosis (AS) is the most common valve disease requiring treatment in developed countries. In older adults, it is typically caused by calcific degeneration — a process in which calcium deposits accumulate on the valve leaflets, making them stiff and narrow over decades. In younger patients, a congenital bicuspid aortic valve (present in 1-2% of the population) predisposes to premature calcification and stenosis. Severe AS produces the classic triad of symptoms: exertional chest pain (angina), fainting (syncope), and shortness of breath from heart failure. Once symptoms develop, prognosis without intervention is poor — the American Heart Association and cardiology literature have long reported that symptomatic severe AS carries roughly a 50% two-year mortality without treatment, which is why timely valve replacement matters so much.

Mitral Regurgitation

Mitral regurgitation (MR) is the most common form of valve disease overall. In primary MR, the valve itself is abnormal — causes include mitral valve prolapse (a common condition in which one or both leaflets bulge back into the atrium), rheumatic heart disease, infective endocarditis, and myxomatous degeneration. In secondary (or functional) MR, the valve is structurally normal but leaks because the left ventricle has dilated from other conditions like cardiomyopathy or coronary artery disease. Severe MR causes shortness of breath, fatigue, and atrial fibrillation, and can lead to heart failure if untreated.

Aortic Regurgitation

Aortic regurgitation (AR) allows blood to leak backward from the aorta into the left ventricle during diastole. Chronic AR may be well-tolerated for years because the left ventricle gradually dilates to accommodate the extra volume. Causes include bicuspid aortic valve, aortic root dilation, and rheumatic disease. Acute AR, caused by conditions like aortic dissection or endocarditis, is a medical emergency because the ventricle cannot compensate for the sudden volume overload.

Other Valve Conditions

Mitral stenosis, most commonly caused by rheumatic heart disease, is less prevalent in developed countries but remains a significant problem globally. Tricuspid regurgitation often occurs secondary to right ventricular dilation from pulmonary hypertension or left-sided heart disease; long overlooked, it has recently drawn intense interest as new catheter-based treatments have become available. Pulmonic valve disease is the rarest in adults and is usually congenital in origin.

Causes and Risk Factors

Age-related degenerative changes are the most common cause of valve disease in developed nations. As we age, valve leaflets become thicker, stiffer, and more calcified. This process is accelerated by many of the same risk factors that promote atherosclerosis: hypertension, high cholesterol, diabetes, and smoking.

Rheumatic heart disease — caused by untreated or inadequately treated streptococcal throat infections — remains the leading cause of valve disease worldwide, particularly in lower-income countries. Rheumatic fever triggers an autoimmune inflammatory response that damages the heart valves, most commonly the mitral valve. The World Health Organization estimates that rheumatic heart disease affects more than 40 million people globally and remains a major cause of cardiovascular death in young people.

Congenital valve abnormalities, particularly bicuspid aortic valve, are common and may not cause problems until midlife. Infective endocarditis — infection of the valve leaflets — can destroy valve tissue rapidly and is a medical emergency. Other causes include connective tissue disorders (Marfan syndrome, Ehlers-Danlos syndrome), radiation therapy to the chest, certain medications, and carcinoid syndrome.

Symptoms to Watch For

Many people with mild to moderate valve disease have no symptoms at all, and the condition is discovered incidentally when a doctor hears a heart murmur during a routine physical exam. Murmurs are sounds created by turbulent blood flow across an abnormal valve and are the most common initial finding.

As valve disease progresses, symptoms develop — and they are often gradual, leading patients to unconsciously reduce their activity level to avoid triggering them. Common symptoms include shortness of breath (initially with exertion, later at rest), fatigue, reduced exercise tolerance, palpitations (often from atrial fibrillation), lightheadedness or fainting, chest pain, and swelling (edema) of the ankles, feet, or abdomen.

The severity of symptoms does not always correlate directly with the severity of valve disease. Some patients with objectively severe valve dysfunction report minimal symptoms because they have gradually limited their activities. This is why objective testing — including echocardiography and sometimes exercise testing — is essential for decision-making, particularly regarding the timing of intervention. If you notice that you can no longer keep up with activities that were easy a year ago, treat that as a symptom worth reporting, even if you have “gotten used to it.”

Diagnosis

Echocardiography is the primary diagnostic tool for heart valve disease. A transthoracic echocardiogram (TTE) uses ultrasound to visualize the valves, assess their structure and motion, measure the severity of stenosis or regurgitation, and evaluate heart chamber size and function. Doppler imaging measures blood flow velocity across the valves, providing quantitative data on severity. For more detailed imaging, particularly of the mitral valve and in cases of suspected endocarditis, a transesophageal echocardiogram (TEE) may be performed.

Additional diagnostic tests may include an electrocardiogram (ECG) to detect arrhythmias, chest X-ray to assess heart size and look for pulmonary congestion, exercise stress testing to objectively assess functional capacity, cardiac MRI for detailed assessment of valve regurgitation and ventricular function, and cardiac catheterization for preoperative evaluation or when noninvasive tests are inconclusive. Cardiac CT is now routine before transcatheter procedures to measure the valve and plan the approach.

The American College of Cardiology and American Heart Association joint guideline on valvular heart disease — the 2020 guideline that remains the governing U.S. document heading into 2026 — classifies valve disease in stages and grades severity as mild, moderate, or severe based on a combination of echocardiographic parameters. Treatment decisions are guided by the severity of the valve dysfunction, the presence and severity of symptoms, and the impact on heart function. Increasingly, these decisions are made by a multidisciplinary “heart team” that includes cardiologists and cardiac surgeons.

Medical Management

There are no medications that can repair or reverse valve damage. Medical therapy is used to manage symptoms, treat associated conditions, and optimize the patient for potential intervention. Diuretics help relieve fluid overload and congestion. Blood pressure medications may help reduce the workload on the heart in patients with regurgitant lesions. Beta-blockers or other rate-controlling medications may be used in patients with atrial fibrillation. Your clinician will tailor and adjust these medications to your situation — do not start, stop, or change doses on your own.

Anticoagulation is critically important for patients with certain valve conditions. Patients with mechanical prosthetic valves require lifelong anticoagulation with warfarin; the direct oral anticoagulants (DOACs) are not approved and are unsafe for mechanical valves. Patients with atrial fibrillation associated with valve disease may need anticoagulation as well, with the specific drug chosen by their clinician. If you take a blood thinner for a mechanical valve or valve-related atrial fibrillation, never stop it on your own — abruptly stopping can cause a clot on the valve or a stroke. If you have bleeding, an upcoming procedure, or a reason you think you should stop, contact the prescriber first. Endocarditis prophylaxis — antibiotics before certain dental procedures — is recommended for higher-risk patients, including those with prosthetic valves, prior endocarditis, certain congenital defects, and cardiac transplant recipients with valve disease.

Serial monitoring with echocardiography is essential to track disease progression. The interval depends on severity: mild disease may be monitored every 3-5 years, moderate disease every 1-2 years, and severe asymptomatic disease every 6-12 months, with close attention to any changes in symptoms or ventricular function. Keeping these appointments is one of the most important things a patient can do, because the window for the best outcome often closes before symptoms become severe.

Surgical and Interventional Treatment

When valve disease becomes severe and symptomatic — or when the heart shows signs of damage even without symptoms — intervention is indicated. The two main options are valve repair and valve replacement, and the choice depends on the specific valve, the nature of the disease, and patient factors. These are clinician-directed decisions; there is no self-managed or at-home version of valve treatment.

Valve repair is preferred when feasible, particularly for mitral regurgitation. Repair preserves the patient’s own valve tissue, avoids the need for lifelong anticoagulation, and is associated with better long-term outcomes compared to replacement in suitable patients. The Society of Thoracic Surgeons reports that mitral valve repair is successful in the large majority of cases when performed by experienced surgeons for degenerative mitral valve disease.

Valve replacement is necessary when repair is not feasible. Two types of prosthetic valves are available: mechanical valves (made of durable materials like pyrolytic carbon) and bioprosthetic valves (made from animal tissue, typically bovine pericardium or porcine valve). Mechanical valves are extremely durable but require lifelong warfarin anticoagulation. Bioprosthetic valves do not require long-term anticoagulation (unless another indication such as atrial fibrillation is present) but have a limited lifespan — often cited as roughly 10-20 years — after which they may degenerate and need replacement. The choice involves a trade-off between durability and the burden of anticoagulation, and it is highly individual; younger patients and those who cannot take warfarin reliably weigh these factors differently.

Transcatheter Options: TAVR and TEER

Transcatheter (catheter-based) procedures have transformed valve care. In transcatheter aortic valve replacement (TAVR, also called TAVI), a bioprosthetic valve is deployed through a catheter usually inserted via the femoral artery, avoiding open-heart surgery. Initially approved only for patients too high-risk for surgery, TAVR has been shown in landmark trials to be equivalent or superior to surgical replacement across high-, intermediate-, and selected low-risk patients, and its indications have continued to expand; multi-year follow-up data are now available and inform the durability discussion. TAVR is not right for everyone — bicuspid anatomy, coronary access, and the lifetime plan for future valve procedures all factor in — so the heart team’s assessment is essential.

For mitral regurgitation, transcatheter edge-to-edge repair (TEER), using devices such as the MitraClip, is an option for selected patients who are poor surgical candidates. More recently, transcatheter therapies for the tricuspid valve have moved from investigational to available: the U.S. Food and Drug Administration cleared the first transcatheter tricuspid edge-to-edge repair device (TriClip) and a transcatheter tricuspid valve replacement system in 2024, giving patients with severe tricuspid regurgitation — a group with historically few good options — new, less-invasive treatments. All of these are clinician-directed, device-based procedures; none involve any medication you take or adjust at home. Reviewing the healthcare costs associated with valve procedures can help with financial planning.

Recovery and Long-Term Outlook

Recovery from valve treatment depends on the approach. Open-heart surgery typically requires a hospital stay of several days, with fuller recovery over six to twelve weeks. Minimally invasive surgical approaches and transcatheter procedures generally mean shorter hospital stays (often one to a few days for TAVR) and faster recovery. Cardiac rehabilitation after valve surgery improves functional capacity, confidence, and quality of life, and is worth asking about.

Long-term outcomes for valve surgery are generally excellent. Survival after aortic valve replacement can approach that of the age-matched general population, particularly in patients without other significant comorbidities. After mitral valve repair for degenerative disease, most patients enjoy durable results with a low rate of reoperation at experienced centers.

Patients with prosthetic valves require lifelong follow-up. Periodic echocardiography monitors valve function, and patients must be vigilant about endocarditis prevention and, for mechanical valves, maintaining therapeutic anticoagulation. Signs of prosthetic valve dysfunction — a new or changing murmur, recurrent symptoms, or an embolic event such as a stroke — should prompt immediate evaluation.

Frequently Asked Questions

Can heart valve disease be prevented?

Some forms can be prevented or delayed. Treating strep throat promptly helps prevent rheumatic heart disease. Managing cardiovascular risk factors — blood pressure, cholesterol, diabetes, and smoking — may slow age-related valve degeneration, though the evidence for slowing established aortic stenosis with medication is limited. Congenital valve abnormalities cannot be prevented but can be detected and monitored early with appropriate screening.

What is the difference between a heart murmur and heart valve disease?

A heart murmur is a sound heard through a stethoscope, caused by turbulent blood flow. Many murmurs are “innocent” or “functional” — they do not indicate valve disease and are common in children, pregnant women, and athletes. Abnormal murmurs may indicate valve stenosis or regurgitation and should be evaluated with an echocardiogram. A murmur is a physical finding, not a diagnosis.

How long do replacement heart valves last?

Mechanical valves are designed to last for many years and rarely fail structurally, but they require lifelong warfarin. Bioprosthetic valves commonly last roughly 10-20 years before degenerating and potentially requiring replacement, though newer surgical and transcatheter valves are accumulating encouraging durability data. The choice between mechanical and biological valves involves trade-offs between durability, anticoagulation requirements, future re-intervention options, and individual patient factors — a decision to make with your heart team.

Is TAVR better than open-heart surgery for aortic stenosis?

For high-risk and intermediate-risk patients, TAVR has been shown to be equivalent or superior to surgical aortic valve replacement, and trials support favorable results in selected low-risk patients as well. Considerations such as long-term valve durability, the possible need for a pacemaker afterward, anatomy, and your lifetime treatment plan still matter. Your heart team will recommend the best approach based on your anatomy, risk profile, and preferences rather than a one-size-fits-all rule.

Can you live a normal life with heart valve disease?

Many people with mild to moderate valve disease live completely normal, active lives with regular monitoring and no restrictions. Even after valve surgery or replacement, most patients return to their usual activities, including exercise and work. The key is appropriate timing of intervention — waiting too long can lead to irreversible heart damage that limits recovery.

I feel fine but my valve disease is “severe” — do I really need treatment?

Sometimes, yes. For certain conditions such as severe aortic stenosis, guidelines support intervention once specific criteria are met even before dramatic symptoms appear, because the risks of waiting can outweigh the risks of the procedure. This is a decision for you and your heart team based on objective testing, not something to judge by how you feel alone.

What to Do If You Suspect Valve Disease

If your doctor has heard a murmur, or if you are experiencing unexplained shortness of breath, fatigue, or reduced exercise tolerance, ask about an echocardiogram. It is a painless, noninvasive test that provides definitive information about your valves. If you have been diagnosed with valve disease, stay on your recommended monitoring schedule, report new or worsening symptoms promptly, and discuss the timing of intervention with your cardiologist or cardiac surgeon.

Do not wait until symptoms become severe. The optimal time for valve intervention is before the heart sustains irreversible damage — and that window requires proactive monitoring and honest communication with your healthcare team. Heart valve disease is a treatable condition, and today’s treatment options are safer and more effective than ever.

Medical disclaimer: This article is for general education and is not a substitute for professional medical advice, diagnosis, or treatment. Always talk with your own physician or a qualified clinician about your specific situation, and never start, stop, or change a medication — including any blood thinner — on your own. If you think you are having a medical emergency, call 911 or your local emergency number.