What is mitral regurgitation? Mitral valve regurgitation is a heart valve condition in which the flaps of the mitral valve do not close properly, causing a backward flow of blood back to the heart. People with moderate or severe regurgitation may need surgery to repair or replace the valve and improve heart function.

A leaky heart valve is a common form of heart … Learn more about the symptoms and treatment of this most common heart valve condition, which causes blood to leak backward in the heart. Mitral valve regurgitation happens when the valve between the heart's left chambers doesn't close properly, causing blood to flow backward. It can range from mild with no symptoms to severe, …