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Mitral Valve Prolapse

Also called: Barlow's syndrome, Floppy valve syndrome, MVP
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What is the mitral valve?

The mitral valve is one of the four valves in your heart. Heart valves have flaps that open and close. The flaps make sure that blood flows in the right direction through your heart and to the rest of your body. When your heart beats, the flaps open to let blood through. Between heartbeats, they close to stop the blood from flowing backwards.

The mitral valve opens to let blood flow from your heart's upper left chamber to the lower left chamber. When the lower left chamber contracts (squeezes) to pump blood to your body, the mitral valve closes tightly to keep any blood from flowing backwards.

What is mitral valve prolapse (MVP)?

Mitral valve prolapse (MVP) happens when the flaps of the mitral valve become floppy and don't close tightly. In some cases, blood may leak backwards through the valve to the chamber it came from. This is called backflow, or regurgitation. When there is a lot of mitral valve backflow, the heart can't push enough blood out to the body.

But most people who have MVP don't have any backflow. In fact, MVP doesn't cause any health problems for most people who have it.

Who is more likely to develop mitral valve prolapse (MVP)?

Anyone can have MVP. Most people who have it were born with it. MVP tends to run in families, but researchers don't know the exact cause.

You may be more likely to develop MVP if you:

Mitral valve prolapse with backflow is most common in men and people who have high blood pressure.

What are the symptoms of mitral valve prolapse (MVP)?

Most people who have MVP don't have any symptoms. But if it does cause symptoms, they may include:

What other problems can mitral valve prolapse (MVP) cause?

In rare cases, MVP can cause other problems. They're most often caused by backflow. They can include:

How is mitral valve prolapse (MVP) diagnosed?

Health care providers often find MVP during routine health check-ups. If you have MVP, your provider may hear a clicking sound when listening to your heart with a stethoscope. If blood flows backwards through the valve, your heart may also make a whooshing sound called a heart murmur.

You may also need certain heart tests. The most useful test is an echocardiogram, or echo. This is a type of ultrasound that uses sound waves to make a moving picture of your heart.

What are the treatments for mitral valve prolapse (MVP)?

Most people don't need any treatment for MVP. If you have symptoms with little or no backflow, you may only need medicine to relieve your discomfort.

If the amount of backflow is significant, you may need treatment to prevent other heart problems from developing. Treatments may include:

  • Medicines to help your heart work better.
  • Heart surgery to repair or replace a very abnormal mitral valve with backflow. The goal of surgery is to improve your symptoms and reduce your risk of developing heart failure.

When possible, valve repair is generally preferred over replacement. That's because repairs are less likely to weaken the heart muscle, and they're less likely to cause heart infection.

Can mitral valve prolapse be prevented?

You can't prevent mitral valve prolapse. But if you have mitral valve prolapse, you can help prevent the rare but serious problems it can cause by:

  • Brushing and flossing your teeth regularly. That helps keep bacteria out of your bloodstream, which further reduces the rare risk of a heart infection.
  • Asking your provider if you need to take antibiotics before dental work or surgery to lower your risk of heart infection. This mostly applies to people who have had valve repair or replacement surgery.
  • Getting regular check-ups and taking any medicines that your provider may have prescribed.
  • Making heart-healthy habits part of your life to prevent heart disease.

NIH: National Heart, Lung, and Blood Institute

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The information on this site should not be used as a substitute for professional medical care or advice. Contact a health care provider if you have questions about your health.