I have irregular heart beats all the time, well I'd say at least once every two days. The panic attacks happened to me when I thought I was going to die as a result of a heart attack. I can laugh at it now but at the time it wasn't very funny at all.

OP I don't know what they are giving you for panic/anxiety but it's been my experience that all those drugs like xanax are evil. Try to get off of them asap. If your doc tells you you are ok then all you can do is leave it to medical science and the experts and ignore the palpitations when they occur. Thats what I do now and... well what else can ya do?