Valvular heart disease:
symptoms not to ignore and when to worry

Article written and reviewed by Dr Luca Moretti

Heart valve diseases can remain symptom-free for years or present with very common complaints such as shortness of breath, reduced ability to exercise, fatigue, palpitations, chest pain, dizziness or ankle swelling. The key point is to pay particular attention to what is new, what appears during activities that were previously well tolerated and what tends to worsen over time.
Having one of these symptoms does not automatically mean that you have valvular heart disease. Likewise, feeling well does not rule out significant valve disease. When valvular heart disease has already been diagnosed, the onset of new symptoms may change the timing of follow-up or treatment decisions.

Valvular heart diseases include stenosis, in which a valve has difficulty opening, and regurgitation, in which the valve does not close properly. This guide does not replace the pages dedicated to individual diseases: it is intended to help identify which signs deserve attention in everyday life.

Symptoms that can occur with heart valve disease

The most common symptom is often shortness of breath, initially during exertion. It may become noticeable when climbing stairs, walking uphill or doing activities that until recently caused no difficulty. Some people do not describe true dyspnea, but simply notice that they have to slow down, stop more often or give up usual activities.
Fatigue and reduced exercise tolerance are also common, but they are nonspecific: they can result from many non-cardiac conditions. They become more meaningful when they represent a change from a person's usual level and especially when they occur together with shortness of breath, palpitations or other cardiovascular signs.

Some forms of valvular heart disease can cause palpitations or promote arrhythmias. In mitral valve disease, for example, enlargement of the left atrium may be associated with atrial fibrillation. In more advanced forms, swelling of the ankles and legs, increased venous congestion or a feeling of abdominal heaviness may occur.
With significant aortic stenosis, exertional dyspnea, chest pain, dizziness or syncope may occur. In mitral regurgitation, shortness of breath, reduced exercise capacity and palpitations may instead predominate. These examples can help provide orientation, but symptoms alone cannot establish which valve is diseased.

Why valvular heart disease can be important even without symptoms

The heart can compensate for a malfunctioning valve for a long time. A person may therefore feel apparently well while the ventricle or atria gradually adapt to pressure or volume overload. In addition, when the change occurs slowly, it is easy to unconsciously reduce daily activities and attribute lower endurance to age or physical fitness.
For this reason, the severity of valvular heart disease is not established simply by asking whether symptoms are present. An echocardiogram assesses the valve, blood flow and the effects on the heart chambers; in selected situations, exercise testing, computed tomography, magnetic resonance imaging or other tests may be needed.

The opposite is equally important: mild valvular heart disease may be present in a person who has marked shortness of breath for another reason. The relationship between symptoms and the valve therefore needs to be assessed in the overall clinical context. A term such as “mild” or “moderate” in a report should not be used on its own to explain every symptom.

When to see a doctor and when urgent assessment is needed

If valvular heart disease is already known, follow-up should be brought forward when a new symptom appears or when an existing symptom worsens. A clear reduction in the ability to walk or climb stairs, new dyspnea, persistent palpitations, episodes of dizziness or presyncope and increased leg edema deserve particular attention.
In people who have not yet been diagnosed, the same symptoms may justify medical assessment, especially if a doctor has already detected a heart murmur, if there is a history of valve disease or if the symptoms occur during exertion.

Severe or sudden breathing difficulty, fainting, significant chest pain or a rapid deterioration in general condition should not be managed by waiting for the next scheduled follow-up. Prompt assessment is indicated in these situations and, when symptoms are severe or sudden, emergency medical services should be contacted.
Some acute forms of valvular regurgitation can also present abruptly with severe dyspnea and instability. These are different from slowly progressive chronic forms and require urgent care.

How to tell whether symptoms are really caused by a valve

Assessment begins with the clinical history and cardiac auscultation. A heart murmur may suggest valve disease, but on its own it identifies neither the cause nor the severity. The central test is usually a transthoracic echocardiogram, which makes it possible to view the valves and measure the effects of stenosis or regurgitation on blood flow and the heart.
If symptoms and the resting echocardiogram do not match, the cardiologist may investigate further with exercise testing or additional imaging. The aim is not merely to apply a label to the valve, but to understand whether the valve disorder is actually responsible for the symptoms and whether it is producing consequences for the ventricle, atria or pulmonary circulation.

For people who already have a diagnosis, it is useful to attend follow-up appointments able to describe what has changed: how many flights of stairs they can climb, whether they have to stop during a usual walk, whether episodes of fainting or palpitations have appeared, and whether symptoms occur only with exertion or also at rest. This information may be clinically more useful than general statements such as “I feel more tired.”

Frequently asked questions about symptoms of valvular heart disease

What are the most common symptoms of valvular heart disease?
Shortness of breath, reduced exercise tolerance, fatigue, palpitations, chest pain or discomfort, dizziness or fainting, and ankle swelling are among the most common symptoms. None of these, however, is specific to valve disease.

Can valvular heart disease be severe even without symptoms?
Yes. Some significant forms can remain asymptomatic for a prolonged period. This is why, when valvular heart disease is known, follow-up should not depend solely on how a person feels.

When do symptoms require urgent assessment?
New severe breathing difficulty, fainting, significant chest pain or rapid deterioration require prompt assessment. If symptoms are severe or sudden, emergency medical services should be contacted.

Do palpitations always indicate valvular heart disease?
No. They can have many causes. In the presence of known valve disease, however, new or persistent palpitations deserve attention because they may be related to an arrhythmia.

If I have mild valvular heart disease, should I expect symptoms?
Often not. Mild forms are frequently asymptomatic and may be discovered incidentally during a medical examination or an echocardiogram.