Mitral Valve Prolapse on Echo: What Does It Mean and Is It Harmless?

Mitral valve prolapse (MVP) on an echocardiogram means the two flaps of the mitral valve, between the upper and lower chambers on the left side of the heart, bulge backwards and do not close normally. It is common and harmless for most people. The key question is whether the valve also leaks, and by how much.

This guide is for adults reading an echo report that mentions prolapse. It explains common terms and next steps. It cannot judge your own valve, which depends on the full report, an examination and your symptoms.

Call your local emergency number for chest pain, fainting, sudden severe shortness of breath, or dizziness with extreme weakness. Cleveland Clinic lists these as reasons for emergency care in people with MVP. Do not wait for a planned echo or clinic appointment.

Contact your clinician sooner than planned if chest discomfort, palpitations or breathlessness are getting worse, or if you have a lasting illness with fevers. MedlinePlus lists these as reasons to get in touch.

Cleveland Clinic estimates that MVP affects 2 to 3 out of every 100 people, and many never know they have it. It is often found by chance, for example when a doctor hears a click or murmur, or when an echo is done for another reason.

For most people MVP is harmless and needs no treatment. MedlinePlus describes the outlook as usually good. It can sometimes run in families and is linked with some connective tissue conditions such as Marfan syndrome. Your clinician can tell you whether anything in your history or examination points that way.

Regurgitation means blood leaks backwards through a valve that does not close fully. With MVP, some people have no leak, some have a small one and a smaller number develop a larger one. Cleveland Clinic describes MVP as one of the most common causes of mitral regurgitation.

Echo reports usually grade a leak with words such as trace, mild, moderate or severe. If your report shows prolapse with only a trace or mild leak, our guide to trace or mild valve regurgitation explains those grades in more detail.

A leak matters more when it is larger. MedlinePlus notes that symptoms are more likely with a severe leak, and that surgery to repair or replace the valve may be considered when a severe leak causes symptoms, the left lower chamber enlarges or heart function declines.

NHLBI notes that most heart valve conditions are treatable, but that valve problems left unmonitored or untreated can lead to complications such as heart failure and abnormal heart rhythms. This is the main reason follow-up is offered when a leak is found, even if you feel well.

Many people with MVP have no symptoms. Some report palpitations, chest discomfort, tiredness, dizziness or breathlessness. MedlinePlus notes that the link between these symptoms and the valve itself is unclear, and Cleveland Clinic adds that symptoms do not always mean the valve problem is severe.

Abnormal heart rhythms can occur with MVP and some can be serious, which is why new or worsening palpitations or fainting deserve assessment. If palpitations are your main concern and an ECG was normal, our guide on palpitations with a normal ECG covers how intermittent rhythms are checked.

That depends mainly on whether there is a leak and how large it is, along with your symptoms and the size and function of the heart chambers. When a leak is present, a repeat echo is often used to check whether it is changing over time. People with larger leaks are generally watched more closely than people with little or no leak.

There is no single interval that suits everyone, and local services set their own pathways. A plan for someone with prolapse and no leak can look very different from a plan for someone with a moderate leak.

Cleveland Clinic says your provider will decide how often you need visits and valve imaging. Ask for the planned interval in writing, and what would bring the next scan forward. If you have not heard about results after a few weeks, the NHS suggests contacting the doctor who referred you.

A standard transthoracic echo uses an ultrasound probe on the chest. Sometimes a transoesophageal echo, with a probe passed down the gullet, is used for a more detailed view of the valve. Look for the size and pumping function of the left ventricle and the size of the left atrium, as these help show whether a leak is affecting the heart.

Antibiotics before dental work were once common for MVP. MedlinePlus says they are now used much less often. Ask your clinician whether this applies to you rather than deciding yourself.

Bring the full echo report, any earlier reports and a note of your symptoms. Writing the answers down makes it easier to compare future reports with this one.

• Is there any mitral regurgitation, and how is it graded?
• Are the heart chambers a normal size, and is pumping function normal?
• Do I need a repeat echo, and if so, when?
• Which symptoms should make me call you, and which need emergency care?
• Could my palpitations or chest discomfort be related to the valve, or should they be checked separately?
• If the leak were to increase, what options would be discussed, and at what point?
• Should family members be checked, or is there any sign of a connective tissue condition?

On SameCase, patients and verified doctors share de-identified cases. Seeing how others with prolapse and a similar leak grade were followed up can help you prepare questions about scan intervals, symptoms and what was measured.

Similar cases cannot tell you how your own valve will behave or what treatment you need. Use them to plan the conversation, and rely on your own cardiology team for decisions.