Thanks for your help. We do know what things tend to trigger them however and this is where stress, electrolyte abnormalities, and caffeinated substances come in. We do not know why some feel them more than others, nor why some people have them more frequently than others. An extremely stressful situation, yes, could cause an arrhythmia, however this is quite a rare occurence and PVCs are probably the most likely result. I hope this information is useful.
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