Most people with chronic mitral valve regurgitation don’t notice any symptoms for a long time. People with mild or moderate mitral regurgitation often don’t have any symptoms at all. If the regurgitation becomes more severe, symptoms may start. They may then become stronger and happen more often over time.
These symptoms may include:
- Shortness of breath with exertion.
- Shortness of breath when lying flat.
- Tiredness (fatigue).
- Reduced ability to exercise.
- Unpleasant awareness of your heartbeat.
- Swelling in your legs, abdomen, and the veins in your neck.
- Chest pain (less common).
Acute, severe mitral valve regurgitation is a medical emergency. It can cause serious symptoms such as:
- Symptoms of shock, such as pale skin, loss of consciousness or rapid breathing.
- Severe shortness of breath.
- Abnormal heart rhythms that make the heart unable to pump as well.
Acute mitral valve regurgitation is more likely to happen after a heart attack. It’s also more likely to happen after rupture of the tissue or muscle that supports the mitral valve. It can also happen after an acute injury or heart valve infection.