Mitral valve regurgitation can be mild, moderate, or severe, with severe mitral valve regurgitation being the most serious. Over time, severe mitral valve regurgitation can cause enlargement of the heart and a decreased heart pumping function, eventually leading to symptoms of heart failure. Patients may experience difficulty breathing, shortness of breath, fatigue, and other symptoms. Additionally, there may be swelling in both lower limbs. When such symptoms occur, it is necessary to take diuretic medications under the guidance of a doctor to reduce heart strain, such as furosemide or spironolactone. If necessary, digoxin may be taken to strengthen the heart and improve symptoms of heart failure. After stabilization, a mitral valve replacement or repair surgery may be scheduled.