today i was sitting at work and my heart starting to flutter or go into an abnormal beat for at least 30 seconds. i was dizzy and serious thought this was the end. went to my cardiologist and he did an ekg that was normal. have to go back this week for an 24 hr holter. but has anyone else had this that lasted 30 seconds? that is scary, i do have mvp but never got this until a month ago. are these pvc's im getting? its hard to describe it.