MSS: Mass Storage System: MSS: Manufacturers Standardization Society: MSS: Multiple Sclerosis Society: MSS: Maxtor Shared Storage: MSS: Mission Support Squadron: MSS: Multi-Spectral Scanner: MSS: Merit System Services: MSS: Mobile Servicing System: MSS: Ministry of State Security (Chinese counterintelligence organization) MSS: Management Support System: MSS: Maternal Serum Screening: MSS
However, as aortic valve regurgitation worsens, signs and symptoms may include: 1  Fatigue and weakness, especially when you increase your activity level. 2  Shortness of breath with exertion or when you lie down. 3  Swollen ankles and feet (edema). 4  Chest pain (angina), discomfort or tightness, often increasing during exercise.
Regurgitation is the name for leaking heart valves. Sometimes the condition is minor and may not require treatment, but other times valve regurgitation places a strain on the heart. It can cause the heart to work harder to pump the same amount of blood.Regurgitation occurs when:egurgitation is the name for leaking heart valves. Sometimes the condition is minor and may not require treatment, but other times valve regurgitation places a strain on the heart. It can cause the heart to work harder to pump the same amount of blood. Regurgitation occurs when: