Mitral valve prolapse

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Definition Symptoms Causes When to seek medical advice Tests and diagnosis

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Definition

Mitral valve prolapse (MVP) is a common heart disorder. It occurs when the valve between your heart's left upper chamber (left atrium) and the left lower chamber (left ventricle) doesn't close properly. When the left ventricle contracts, the valve's leaflets bulge (prolapse) upward or back into the atrium. Mitral valve prolapse sometimes leads to blood leaking backward into the left atrium, a condition called mitral valve regurgitation.

Mitral valve prolapse affects slightly more than 2 percent of adults in the United States. Men and women appear to develop MVP in similar numbers.

In most people, mitral valve prolapse is harmless and doesn't require treatment or changes in lifestyle. It also doesn't shorten your life expectancy. In some people with mitral valve prolapse, however, the progression of the disease requires treatment.

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Symptoms