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Mitral Valve Regurgitation

What is mitral valve regurgitation?

The mitral valve helps to control the flow of blood from the left atrium to the left ventricle. The mitral valve is made up of two leaflets that open and close to allow blood to flow.  When these leaflets are not closing completely, a patient has mitral valve regurgitation (MR).  Because the valve leaflets cannot close all the way, blood backs up (regurgitates) into the upper area of the heart, causing the heart to work harder to pump the extra blood.

Mild regurgitation often doesn’t cause problems. The symptoms can include a heart murmur, shortness of breath and fatigue.  In fact, a lot of people have it for many years without experiencing any complications. But, if the valve leaflets further weaken and the regurgitation becomes severe, it can weaken the heart and lead to heart failure.