I'm post-op (2001) 58 year old male for a mitral valve repair with a history of atrial flutter. I am therapeutic on a coumadin regimen. I've been experiencing episodes of light-headedness accompanied by tingling sensations in the lower arms, and a gradual (but not severe, no pain) sensation of tightness and slight shaking in the center chest and upper abdomen. At onset I have a signature feeling of weakness in the front of my shoulders. When I first experienced it, I went to the E-room but no heart problems were noted. The episodes lasted for some weeks. My doctor referred me to an ENT who diagnosed BPPV. After some time, the symtoms resided but they've returned. I'm very concerned about these episodes as they are affecting my ability to work and drive. Please advise.