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The Daily Insight

What is a mitral murmur

Author

Sarah Rodriguez

Published Mar 08, 2026

Causes of heart murmurs Valvular heart disease is the most common cause of a heart murmur. Valve stenosis – a narrow, tight, stiff valve, limiting forward flow of blood. Valve regurgitation – a valve that does not close completely, allowing backward flow (a “leaky” valve).

What causes mitral valve murmur?

Causes of heart murmurs Valvular heart disease is the most common cause of a heart murmur. Valve stenosis – a narrow, tight, stiff valve, limiting forward flow of blood. Valve regurgitation – a valve that does not close completely, allowing backward flow (a “leaky” valve).

What is the most common cause of mitral?

The main cause of mitral valve stenosis is an infection called rheumatic fever, which is related to strep infections. Rheumatic fever — now rare in the United States, but still common in developing countries — can scar the mitral valve.

Is a heart murmur life threatening?

Many heart murmurs aren’t life-threatening and don’t need treatment. But other heart murmurs do need treatment because they’re a sign of an underlying problem with your heart. It’s important to remember that if you’ve been diagnosed with a heart murmur, that doesn’t mean you’ll always have it.

Can MVP cause sudden death?

Importance Malignant arrhythmic mitral valve prolapse (MVP) phenotype poses a substantial risk of sudden cardiac death (SCD), and an estimated 26 000 individuals in the United States are at risk of SCD per year.

What happens when the mitral valve is not working properly?

Mitral valve disease occurs when the mitral valve doesn’t work properly, allowing blood to flow backward into the left atrium. As a result, your heart does not pump enough blood out of the left ventricular chamber to supply your body with oxygen-filled blood.

What are the symptoms of mitral valve disease?

  • Fluttering or rapid heartbeat called palpitations.
  • Shortness of breath, especially with exercise.
  • Dizziness.
  • Passing out or fainting , known as syncope.
  • Panic and anxiety.
  • Numbness or tingling in the hands and feet.

When should I be concerned about a heart murmur?

When to see a doctor Most heart murmurs aren’t serious, but if you think you or your child has a heart murmur, make an appointment to see your family doctor. Your doctor can tell you if the heart murmur is innocent and doesn’t require any further treatment or if an underlying heart problem needs to be further examined.

Can a heart murmur cause a stroke?

Heart Murmur Complications Abnormal heart murmurs themselves don’t cause complications, but underlying conditions may cause serious complications such as heart attack or stroke, heart failure, poor growth (in infants and children) and other serious issues.

Can a heart murmur cause fatigue?

People with an abnormal heart murmur may have symptoms of the problem causing the murmur. Symptoms can include: Feeling weak or tired. Shortness of breath, especially with exercise.

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What would an incompetent mitral valve cause?

A leaky mitral valve can increase pressure in the left atrium, which can eventually cause pulmonary hypertension. This can lead to heart failure on the right side of the heart.

How long can you live with mitral valve regurgitation?

Widely disparate estimates of long term survival in patients with mitral regurgitation—between 97–27% at five years—have been reported. We analysed the natural history of mitral regurgitation caused by flail leaflets because these patients present with severe mitral regurgitation in more than 85% of cases.

How long can you live with a leaky heart valve?

In developing countries, it progresses much more rapidly and may lead to symptoms in children less than 5 years of age. Around 80% of patients with mild symptoms live for at least 10 years after diagnosis.

Can you drink coffee with mitral valve prolapse?

If your doctor prescribes medicines to treat your mitral valve prolapse, you should take them as directed and avoid stimulants such as caffeine and cigarettes. Medicines can be used to: Control irregular or fast heartbeats. Strengthen your heartbeat.

Can anxiety cause mitral valve prolapse?

People who have anxiety and panic attacks seem to be at a higher risk of having mitral valve prolapse. Anxiety, panic attacks, and mitral valve prolapse have similar symptoms like palpitations and chest pain.

How does alcohol affect mitral valve prolapse?

Heavy alcohol use can cause arrhythmias and can make your symptoms worse. Excessive alcohol use can also cause cardiomyopathy, a condition of weakened heart muscle that leads to mitral regurgitation. Ask your doctor about the effects of drinking alcohol. Avoiding tobacco.

When should you have mitral valve surgery?

What are the indications for surgical repair of a leaking mitral valve? Surgery should be considered when the leak is severe. In most facilities, the regurgitation (leak) is graded on a scale from 0 to 4, with 0 being no leak and 4 being a severe leak.

How do you know if your mitral valve prolapse is getting worse?

However, some people develop symptoms that get worse over time. These symptoms can vary from person to person, but may include the following: palpitations, or the feeling of the heart skipping a beat or beating too hard. a racing heart.

What causes a heart valve to go bad?

Heart valve disease occurs when your heart’s valves do not work correctly. Common causes of valve disease include rheumatic fever, birth defects, degeneration over time and infection. This can be caused by valvular stenosis or valvular insufficiency.

Is mitral valve a heart condition?

Mitral valve stenosis, shown in the heart on the right, is a condition in which the heart’s mitral valve is narrowed. The valve doesn’t open properly, blocking blood flow coming into the left ventricle, the main pumping chamber of the heart. A typical heart is shown on the left.

Can mitral valve cause shortness of breath?

In some cases, blood may leak backward through the valve (mitral valve regurgitation). This may not cause problems if only a small amount of blood leaks back into the left atrium. More severe mitral valve regurgitation can cause symptoms such as shortness of breath, fatigue or lightheadedness.

Is mitral valve regurgitation a heart disease?

Mitral regurgitation is a common type of heart valve disorder. Blood that flows between different chambers of your heart must flow through a valve. The valve between the 2 chambers on the left side of your heart is called the mitral valve.

How long can you live with a heart murmur?

If you or your child has an innocent heart murmur, you can live a completely normal life. It will not cause you any problems and is not a sign of an issue with your heart. If you have a murmur along with any of the following symptoms, see your doctor: You are very tired.

Can a heart murmur make you dizzy?

An innocent heart murmur doesn’t cause any symptoms. However, if the heart murmur is abnormal you may notice associated symptoms, including: Shortness of breath (this may be with heavy exercise, mild exercise or at rest, depending on severity) Feeling light-headed or dizzy.

Can cholesterol cause heart murmurs?

Having high cholesterol seems to worsen some heart valve problems, including some heart murmurs.

Can anxiety cause a heart murmur?

Stress and anxiety can cause a heart murmur that’s considered a physiologic heart murmur. However, it’s more likely that a heart murmur would be caused by an underlying heart condition, anemia, or hyperthyroidism.

Is it safe to exercise with a heart murmur?

If you do have a pathological heart murmur, your doctor will let you know if you need treatment (not all require treatment), and how the condition may or may not affect your day-to-day activities, including sports participation. “In most cases, people with murmurs have no symptoms,” says Dr. Singh.

Can a heart murmur turn into AFib?

Heart murmurs are not necessarily a sign of AFib. Murmurs are related to how blood is flowing through your heart, particularly the valves that connect the chambers of your heart. AFib, on the other hand, is related to electrical impulses that have become chaotic or disordered and result in an irregular heartbeat rate.

Can I drink alcohol with a heart murmur?

Most people should be okay to continue drinking in moderation even after being diagnosed with heart disease, but it’s important to discuss this with your doctor in case there are any underlying issues that may cause additional problems.

Is a heart murmur a leaky valve?

How are leaky heart valves diagnosed? A primary care physician or cardiologist may perform a physical exam and find fluid in the lungs, an enlarged heart, or a heart murmur. These are all indicators that a heart valve may be leaky.

Does mitral valve regurgitation cause coughing?

Mitral Valve Regurgitation Symptoms and Diagnosis Shortness of breath, often worse with activity. Fatigue, or feeling tired. Coughing — can often be a dry cough. Swelling of feet or ankles.