Medical note: This article is for educational purposes only and does not replace medical advice, diagnosis, or treatment from a licensed healthcare professional.
Mitral valve prolapse, often shortened to MVP, and heart murmurs are related in a way that is surprisingly simple once you picture the heart as a very well-organized plumbing system with four one-way doors. MVP is a structural issue involving one of those doorsthe mitral valve. A heart murmur is not a disease by itself; it is a sound. More specifically, it is a whooshing, swishing, or blowing sound that a clinician may hear through a stethoscope when blood flow becomes turbulent.
So, how are MVP and heart murmurs related? MVP can cause a heart murmur when the mitral valve does not close tightly and blood leaks backward. That leak is called mitral regurgitation. When regurgitation occurs, the backward flow can create the classic murmur associated with MVP. In other words, MVP is one possible reason for a murmur, but not every person with MVP has a murmur, and not every murmur is caused by MVP. The heart, like a dramatic family group chat, has many ways to make noise.
What Is Mitral Valve Prolapse?
The mitral valve sits between the heart’s upper left chamber, called the left atrium, and the lower left chamber, called the left ventricle. Its job is to open and let oxygen-rich blood move from the atrium into the ventricle, then close firmly so blood can be pumped out to the body instead of slipping backward.
In mitral valve prolapse, one or both valve flaps, also called leaflets, become unusually floppy, stretchy, or billowy. When the left ventricle contracts, the leaflets bulge backward into the left atrium. The word “prolapse” simply means that something has slipped or bulged out of its normal position. It sounds dramatic, but many cases of MVP are mild and never cause major problems.
MVP is often discovered during a routine physical exam. A person may feel completely fine, only to hear, “Your doctor noticed a click or murmur.” That sentence can instantly turn a normal Tuesday into a Google marathon. Fortunately, most people with MVP live normal lives, especially when there is little or no mitral regurgitation.
What Is a Heart Murmur?
A heart murmur is an extra sound heard during a heartbeat. Normal heart sounds are often described as “lub-dub.” A murmur adds something extra: a whoosh, swish, rasp, or blowing sound. That sound happens when blood flow becomes turbulent instead of smooth.
Some murmurs are called innocent heart murmurs. These can occur in healthy people and may be related to exercise, pregnancy, fever, anemia, or simply faster blood flow through a normal heart. Innocent murmurs are not caused by structural heart disease and usually do not require treatment.
Other murmurs are considered abnormal heart murmurs. These may point to a valve problem, congenital heart defect, narrowing of a valve, leakage through a valve, or another cardiovascular issue. MVP belongs in this conversation because it can affect the mitral valve’s ability to close properly.
The Main Connection: MVP Can Cause Mitral Regurgitation
The direct link between MVP and heart murmurs is mitral regurgitation. When the mitral valve leaflets prolapse but still seal well, blood does not leak backward in a meaningful way. In that case, a doctor may hear a click but no murmur. However, if the leaflets do not meet tightly, some blood leaks backward from the left ventricle into the left atrium during contraction. That backward jet of blood can create a murmur.
Think of a door that closes almost all the way but leaves a small gap. Air may whistle through it. With MVP, the “door” is the mitral valve, and the “whistle” is turbulent blood flow. The murmur is not the prolapse itself; it is the sound produced when MVP allows blood to flow in the wrong direction.
The Classic MVP Sound: Click Plus Murmur
Many clinicians are trained to listen for a mid-systolic click in MVP. “Systolic” refers to the phase when the heart contracts and pumps blood. The click may happen when the floppy mitral valve leaflet suddenly tenses or snaps backward during contraction.
If mitral regurgitation is present, the click may be followed by a late systolic murmur. This murmur is often heard best near the apex of the heart, around the lower left side of the chest. In more significant mitral regurgitation, the murmur may become longer or more noticeable.
This is why a person with MVP might be told, “I hear a click,” “I hear a murmur,” or “I hear both.” The sound pattern depends on the valve’s shape, the amount of leakage, body position, heart rate, blood pressure, and sometimes the examiner’s listening skills. Stethoscopes are useful, but they are not magic wands.
Can You Have MVP Without a Heart Murmur?
Yes. A person can absolutely have MVP without a murmur. If the valve leaflets bulge but still close well enough to prevent significant backflow, there may be no turbulent leak to hear. Some people with MVP have only a click. Others have neither a clear click nor a murmur during one exam, but imaging later shows mild prolapse.
This is one reason an echocardiogram is so important. A stethoscope can raise suspicion, but an echocardiogram can show the valve moving in real time. It can also measure whether regurgitation is present and how severe it is.
Can You Have a Heart Murmur Without MVP?
Also yes. MVP is only one possible cause of a heart murmur. Murmurs can come from several situations, including aortic valve narrowing, mitral valve regurgitation from causes other than MVP, tricuspid valve leakage, congenital heart defects, anemia, pregnancy, fever, or high-output blood flow states.
That is why the phrase “heart murmur” should not automatically be translated as “mitral valve prolapse.” A murmur is a clue, not a final diagnosis. It tells the clinician, “Something about the flow sounds different.” The next step is figuring out whether that difference is harmless or important.
Why MVP Murmurs Can Change With Position
One fascinating feature of MVP is that its sound can change when a person stands, squats, or performs certain maneuvers during an exam. These movements alter the amount of blood returning to the heart and the size of the left ventricle. Because MVP depends partly on valve position and ventricular volume, the timing of the click and murmur may shift.
For example, standing can reduce the volume inside the left ventricle. With less volume, the prolapsing leaflet may billow earlier, so the click may occur sooner and the murmur may last longer. Squatting generally increases venous return and ventricular volume, which can delay the click and shorten the murmur. These changes can help clinicians distinguish MVP from other causes of systolic murmurs.
That said, most patients do not need to memorize the cardiology gymnastics. The practical takeaway is this: MVP-related murmurs can be dynamic, and a good evaluation looks at more than one sound at one moment.
Symptoms That May Occur With MVP
Many people with MVP have no symptoms. Others may report symptoms such as palpitations, chest discomfort, fatigue, lightheadedness, shortness of breath with activity, or reduced exercise tolerance. Some people describe feeling their heart skip, flutter, or thump unexpectedly, especially during stress or after caffeine. The heart apparently enjoys making surprise percussion solos.
Symptoms do not always match the severity of MVP. Someone with mild MVP may feel palpitations and anxiety, while another person with more valve leakage may have few symptoms for years. This mismatch is why testing matters. Doctors look at symptoms, exam findings, echocardiogram results, heart rhythm, and overall health before deciding what MVP means for a specific person.
When MVP and a Murmur Become More Concerning
The main concern is not MVP alone. The bigger issue is whether MVP causes moderate or severe mitral regurgitation. Significant leakage can make the heart work harder. Over time, the left atrium or left ventricle may enlarge, heart rhythm problems such as atrial fibrillation may develop, and symptoms like shortness of breath or fatigue may worsen.
Warning signs that deserve medical attention include new or worsening shortness of breath, chest pain, fainting, swelling in the ankles or feet, rapid or irregular heartbeat, sudden decline in exercise ability, or unusual fatigue that does not improve. Severe chest pain, fainting, severe breathing trouble, or symptoms of stroke should be treated as urgent or emergency situations.
How Doctors Diagnose MVP and Murmurs
The first step is usually a physical exam. A clinician listens with a stethoscope for clicks, murmurs, rhythm changes, and where the sound is loudest. The timing of the murmur matters. A late systolic murmur after a click may suggest MVP with regurgitation, while other patterns may suggest different valve problems.
The most important test is an echocardiogram. This ultrasound test shows the structure and motion of the mitral valve, the size of the heart chambers, the pumping function of the heart, and whether blood is leaking backward. A standard transthoracic echocardiogram is noninvasive and commonly used. In selected cases, a transesophageal echocardiogram may give a closer view of the mitral valve.
Other tests may be used depending on symptoms. An electrocardiogram, or ECG, can check heart rhythm. A Holter monitor or event monitor can record palpitations over time. A stress test may be used if symptoms occur during exertion. These tests help separate harmless noise from meaningful valve disease.
Treatment: What Happens After MVP Is Found?
Treatment depends on the severity of mitral regurgitation and symptoms. Many people with mild MVP and little or no regurgitation need no treatment beyond periodic checkups. They may be told to stay active, manage blood pressure, avoid smoking, and return for follow-up echocardiograms as recommended.
If palpitations are bothersome, a clinician may evaluate triggers such as caffeine, dehydration, poor sleep, stress, or thyroid problems. Sometimes medications are used for rhythm symptoms, blood pressure control, or complications such as atrial fibrillation. Medication does not “un-prolapse” the valve, but it may help manage symptoms or related conditions.
For severe mitral regurgitation, especially when symptoms, heart enlargement, or reduced heart function appear, valve repair or replacement may be considered. When possible, mitral valve repair is often preferred because it preserves the person’s own valve structure. Some patients may be candidates for minimally invasive or transcatheter procedures, depending on anatomy, surgical risk, and specialist evaluation.
Living With MVP and a Heart Murmur
For many people, MVP is a condition to monitor rather than fear. A murmur may sound alarming, but the sound itself is not the enemy. The key question is what the murmur represents. Is it a tiny leak that never changes? Is it moderate regurgitation that needs monitoring? Or is it severe leakage that should be treated before the heart struggles?
Healthy daily habits can support overall heart health. Regular physical activity, a balanced diet, good sleep, blood pressure control, and routine medical care all matter. Most people with mild MVP can exercise normally, but anyone with significant regurgitation, fainting, complex rhythm issues, or symptoms during exertion should ask a cardiologist about safe activity levels.
Dental hygiene is also worth mentioning. While routine antibiotics before dental work are not generally recommended for most people with MVP, good oral care remains important because infections can affect the heart in rare but serious ways. Brushing, flossing, and regular dental visits may not sound glamorous, but neither does explaining to your heart valve that you skipped flossing for six months.
Common Myths About MVP and Heart Murmurs
Myth 1: Every murmur means heart disease.
False. Some murmurs are innocent and occur in healthy hearts. The meaning depends on the sound, symptoms, age, medical history, and test results.
Myth 2: Everyone with MVP has a murmur.
False. MVP may cause only a click, a murmur, both, or no obvious sound during a given exam. A murmur usually appears when MVP causes enough regurgitation to create turbulent flow.
Myth 3: MVP always gets worse.
False. Many cases stay mild for years or even a lifetime. Some cases progress, which is why follow-up matters.
Myth 4: A loud murmur always means severe disease.
Not always. Murmur loudness can be influenced by body size, blood flow, chest wall anatomy, and exam conditions. Echocardiography gives a much clearer picture of severity.
Experiences Related to MVP and Heart Murmurs
One of the most common experiences related to MVP and heart murmurs is surprise. A person may go in for a routine annual exam, a sports physical, or a visit for something completely unrelated, like allergies or a stubborn cough. Then the clinician pauses with the stethoscope and says, “I hear a murmur,” or “There may be a click.” Suddenly, the appointment changes tone. The patient may feel fine, but the word “heart” has a special talent for making everyone sit up straighter.
For many people, the next experience is anxiety while waiting for an echocardiogram. This is understandable. A murmur can sound mysterious because it is invisible to the patient. You cannot look in the mirror and see turbulent blood flow. You cannot stretch it out like a sore hamstring. You simply know someone heard something unusual. During this waiting period, people often imagine the worst, even though MVP is frequently mild and manageable.
Another common experience is confusion over terminology. Patients may hear “mitral valve prolapse,” “leaky valve,” “mitral regurgitation,” “click,” and “murmur” in the same conversation. These terms are connected, but they are not identical. MVP describes the valve’s shape and motion. Regurgitation describes backward blood leakage. A murmur describes the sound that leakage may create. Once people understand this chain, the diagnosis usually feels less like a medical riddle and more like a mechanical explanation.
Some people with MVP become more aware of their heartbeat. They may notice palpitations after coffee, poor sleep, stress, or intense exercise. This can create a loop: the heart flutters, the person worries, the worry increases adrenaline, and the heartbeat becomes even more noticeable. Not every palpitation means danger, but recurring, new, or severe rhythm symptoms should be discussed with a healthcare professional. A monitor can often clarify whether the rhythm is benign or needs treatment.
People with a mild MVP-related murmur often describe relief after testing. An echocardiogram may show only mild prolapse and trivial or mild regurgitation. In that case, the plan may be simple: periodic follow-up, heart-healthy habits, and instructions to report new symptoms. The diagnosis becomes less of a crisis and more of a note in the owner’s manual: “Valve slightly floppy; keep an eye on it.”
Others may have a different experience. If testing shows moderate or severe mitral regurgitation, the conversation becomes more serious. These patients may need regular cardiology visits, repeat imaging, rhythm monitoring, medication, or eventually valve repair. Even then, early detection is valuable. A murmur can be the clue that catches valve leakage before advanced symptoms appear.
The most helpful experience for many patients is learning what questions to ask. Good questions include: How severe is the regurgitation? Is my heart enlarged? How often should I have an echocardiogram? Are there exercise limits? What symptoms should prompt a call? Do I need a cardiologist? Clear answers turn a scary sound into a manageable plan.
Conclusion
MVP and heart murmurs are related, but they are not the same thing. Mitral valve prolapse is a structural valve condition in which the mitral valve leaflets bulge backward during the heartbeat. A heart murmur is a sound caused by turbulent blood flow. MVP can produce a murmur when it leads to mitral regurgitation, meaning blood leaks backward through the mitral valve.
The most important point is context. A murmur may be harmless, or it may be a clue to valve leakage. MVP may be mild and require only observation, or it may cause significant regurgitation that needs closer care. A stethoscope can start the investigation, but an echocardiogram usually provides the clearest answer. If you have been told you have MVP, a murmur, or both, the goal is not panic. The goal is understanding the valve, measuring the leak if one exists, and following a smart plan with your healthcare provider.
