The incidence of mitral valve disease (MVD) is growing as the overall population ages. Mitral valve disease describes the condition when the mitral valve doesn’t work properly, allowing blood to flow back into the left atrium. When this occurs, the heart doesn’t pump enough blood out of the left ventricle to supply the body with oxygen-rich blood. Patients with the condition frequently don’t exhibit any symptoms, while others experience the classic symptoms of heart failure—fatigue, shortness of breath, lightheadedness, weight gain due to fluid retention, increased heart rate and more.