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Mitral Valve Prolapse (MVP)

By

The Manual's Editorial Staff

Last full review/revision Feb 2021| Content last modified Feb 2021
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What is mitral valve prolapse?

Four heart valves control how blood flows in and out of your heart. The valves are like one-way doors that keep blood flowing in the right direction.

Your mitral valve separates your left atrium and left ventricle. This valve opens to let blood from your lungs out of your left atrium and into the left ventricle. The valve closes to keep blood from running back into your left atrium.

In mitral valve prolapse, the mitral valve bulges back into the left atrium when your left ventricle contracts. If that bulge also causes blood to leak backward into the left atrium, that's called mitral regurgitation.

  • Mitral valve prolapse is sometimes caused by weakness in the tissue of your valve

  • Most people have no symptoms

  • Doctors can hear a clicking sound through a stethoscope and then do echocardiography to diagnose mitral valve prolapse

  • Most people don’t need treatment

What causes mitral valve prolapse?

The most common cause of mitral valve prolapse is weakness in the tissue of your valve, which is genetic (something you inherit from a parent).

What are the symptoms of mitral valve prolapse?

Most people with mitral valve prolapse have no symptoms.

But some people may have:

  • Chest pain

  • Fast heartbeat

  • Awareness of heartbeats

  • Severe headaches called migraines

  • Feeling tired and weak all over

  • Dizziness

  • A drop in blood pressure when they stand up

How can doctors tell if I have mitral valve prolapse?

Doctors suspect mitral valve prolapse when they hear a clicking sound while listening to your heart with a stethoscope. Doctors use echocardiography (an ultrasound of your heart) to confirm the diagnosis and see if the valve is leaking.

How do doctors treat mitral valve prolapse?

Most people with mitral valve prolapse don’t need treatment. If your heart beats too fast, your doctor may give you a medicine called a beta-blocker to slow it and ease your symptoms.

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Loss of Smell
Anosmia is the total loss of smell. Most people with anosmia can taste sweet, sour, salty, and bitter substances but cannot distinguish among specific flavors. This is because the sense of smell makes it possible to distinguish among flavors, not taste receptors as many people erroneously believe. Which of the following is NOT a common cause of anosmia?
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