Prompt treatment of any underlying heart disease may reduce the risk of mitral regurgitation. Sometimes, though, nothing can be done to prevent the condition.
Long-term effects depend on the severity of the regurgitation. In severe cases, heart failure occurs and surgery may be necessary. People with this condition have a higher risk of heart infections. They need to take antibiotics before surgery and dental procedures. People with severe heart failure and those with atrial fibrillation, a rapid irregular atrial rhythm, have a higher risk of blood clots. Blood clots can travel from the atrium to block the flow of blood to an organ. For example, a blood clot can travel to the lungs and cause a pulmonary embolus.
There are no risks to others.