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
Symptoms of aortic valve regurgitation include: 1  Shortness of breath, especially with activity. 2  Fatigue and weakness. 3  Fainting (syncope). 4  Trouble breathing at night. 5  Swelling in the legs and sometimes the rest of the body (edema). 6  Awareness of the heartbeat (palpitations), especially when lying on the left side.
1 This can lead to blood leaking backward (regurgitating) into the right atrium. 2  Tricuspid valve regurgitation in children is usually caused by heart disease present at birth (congenital heart disease), and Ebstein's anomaly is the most common congenital heart disease that causes the condition.ou may be diagnosed with this condition when having tests for other conditions. Signs and symptoms of tricuspid valve regurgitation may include: 1  Fatigue. 2  Declining exercise capacity. 3  Swelling in your abdomen, legs or veins in your neck. 4  Abnormal heart rhythms. 5  Pulsing in your neck.