Steve Pope wrote:

> Not to be technical but what you are feeling is a "palpitation"
> not an "arrhythmia". A palpitation will not show up on a normal
> EKG or echo because it only happens occassionally. If you're
> hooked up to a recording EKG for a couple days then they might
> register one or two of these events.
>
> Typically arrhythmias happen every heartbeat, aren't felt
> by the subject, but show up on any EKG.
>
> Steve

No, there are plenty of arrhythmias that aren't on each beat, such as
bigeminy or trigeminy.