Mitral valve disease

Also known as: Mitral valve stenosis
Mitral valve stenosis is a heart problem in which the mitral valve doesn't open as wide as it should. It is a lifelong disease.

When you first develop it, you most likely have no symptoms and notice no change in your health. Symptoms develop over 10 to 20 years or more. Mitral valve stenosis can lead to heart failure, a stroke, an infection in the heart (endocarditis), or a fast, slow, or uneven heartbeat (arrhythmia).