This is just an observation about what I assume is vagal arrhythmia.
Without drugs, I have a constant and symptomatic arrhythmia (not AF) and without fail I get pronounced heart wobbles a few minutes after eating a meal. Six months' ago I was put on Disopyramide which has stopped the symptoms. My pulse has gone from being constantly all over the place to a strong, steady beat, if anything a bit too strong and almost unreal. And I no longer get wobbles after eating, the drugs are so strong or working so well.
But now, on the drugs, instead of the wobbles after eating, I feel a pressure being applied to my heart; like someone sticking their thumb in and leaving it there, pushing. Almost a mild stabbing but constant, I'd be quite scared if I hadn't linked it to eating ( thanks to this forum ). I assume this must be the vagal "mechanism" trying to kick my heart into an arrhythmia, but the drugs are stopping it.
Thought that might be interesting, maybe not!