Mitral valve prolapse

Mitral valve prolapse Occurs when one or both of the valve leaflets (called “leaflets”) become enlarged and the supporting muscles are too long.


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Mitral valve prolapse (PVM) occurs when one or both of the valve leaflets (called “leaflets”) become enlarged and the supporting muscles are too long. Instead of closing properly, one or both leaflets sink or bulge into the left atrium. PVM is often called “click-puff syndrome” because when the valve does not close properly, it produces a click-like sound followed by a puff . PVM is one of the most common valve diseases.

It can run in families. Some types of PVM have been related to Marfan syndrome , a connective tissue disease characterized by affected people with long bones and very flexible joints. Most people with PVM are thin or have mild chest wall deformities , scoliosis, or other skeletal malformations.

  • Most people with PVM have no symptoms. When there are symptoms, they can include:
  • Shortness of breath, especially at bedtime.
  • Chest pain.
  • Heart palpitations.
  • Cough.
  • Shortness of breath after exercising.
  • Rapid heartbeat or tachycardia (in rare cases).

In most cases, PVM is not a serious problem. Some patients report feeling palpitations (irregular heartbeat) or severe chest pain. Doctors used to recommend that some patients with PMV take antibiotics before undergoing dental surgery or general surgery. Antibiotics can prevent an infection of the heart’s inner tunic called bacterial endocarditis. However, the American Heart Association (AHA) now no longer recommends taking antibiotics before dental procedures or general surgery , except if the patient is at increased risk for bacterial endocarditis. According to the AHA, a person is more at risk of bacterial endocarditisif you have a valve prosthesis, if you have had bacterial endocarditis before, or if you have a certain type of congenital heart disease . If you have PMV, it may be best to let your doctor know if you are going to have dental surgery or general surgery so that the doctor can determine if antibiotics are right for you.


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