Old thread, but would like to see if this sx improved for anyone. I have bad pounding heart, tachycarida upon minimal exertion, shortness of breath, and dizziness. Ive had 2 full cardio work ups and they found trace mitral valve regirgitaion (sp) but they also told me its too minor to cause sxs. They told me everything is normal on multiple occasions, yet cant give me an answer why i am feeling this way. heart sxs in wd are the scariest of all! I would love to know if this subsided or improved for any of you.