i have been experiencing a missed heart beat every now and again. i have had panic attacks in the past where my heart races everso quickly, but this has never been a big issue for me once i knew what it was. however lately when i relax and am awear of my heart beat, it skips a beat every so often and i feel a surge of adrenalin,for a millisecond.there is no pattern to when it misses a beat, when i am busy i do not notice an irregularity . could this be a pyschosymatic effect its really worrying me??