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, … 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 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. What is a leaky heart valve? A leaky heart valve is a common form of heart …