same here, my heart flips and seems as if it stalls out, stops beating, skips one too many beats. I was taken to the hospital once also. My heart rate was off the chart, it was beating so fast I ended up in the cardiac unit. They said it was a severe anxiety attack. I was given ativan and woke up in the cardiac unit, incidentally thats how I got admitted for suicide ideation, been down hill struggle for me since. Things like caffeine, work stress, family issues and driving sometimes usually trigger me. Because I have to drive, I avoid as many of my triggers as possible.

Oh yeah, I forgot to mention that I ended up wearing a halter monitor (heart beat tracker so to speak) to track my beats, I have very bad palpitations. I never asked if it was anxiety related or not. I don't think so, because I have a few other heart conditions.