There are four valves in the heart: the aortic, mitral, pulmonary, and tricuspid valves. The valves shutter open and closed, allowing blood to flow through the heart. Any number of conditions damages the valves and prevent blood flow; this is called stenosis. Narrowed valves may leak. Symptoms of valvular heart disease vary depending on the amount of damage. General symptoms include irregular heartbeats, fainting, tiredness, chest pain, and swollen extremities.

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