Mitral valve regurgitation is a type of heart valve disease in which the valve between the left heart chambers doesn't close completely, allowing blood to leak backward across the valve. It is the most common type of heart valve disease (valvular heart disease). If the leakage is severe, not enough blood will move through the heart or to the rest of the body. As a result, mitral valve regurgitation can make you feel very tired (fatigued) or short of breath.
Other names for mitral valve regurgitation are:
Mitral regurgitation (MR)
Treatment of mitral valve regurgitation may include regular monitoring, medications or surgery. Some people with mitral regurgitation don't need treatment, especially when the regurgitation is mild.
Severe mitral valve regurgitation often requires a catheter procedure or heart surgery to repair or replace the mitral valve. Without proper treatment, severe mitral valve regurgitation can cause heart rhythm problems (arrhythmias) or heart failure.