The mitral valve may be a heart valve that lies between the atrium sinistrum and heart ventricle. Mitral regurgitation is usually known as mitral insufficiency or mitral incompetence. In mitral regurgitation the valve doesn't shut properly.

This causes blood to leak back (regurgitate) into the atrium sinistrum once the heart ventricle squeezes (contracts).

Basically, the a lot of open the valve remains, the more blood regurgitates and the more severe the problem.

“Mitral Valve regurgitation” is known that  blood are not going anywhere it must to. With this condition, some of it leaks backward instead of flowing out to the rest of your body.

You may feel tired and out of breath if you have got it. You may even have higher blood pressure and a buildup of fluid in your lungs.