Thanks for your post. I don't have an answer, so I'll be watching. I wore the VIOS (?) device for two weeks, and there was a prolonged episode of SOMETHING (tachycardia, I'm pretty sure) during that time, but the dr. who read it (an internist who installs pacemakers, but he's not a cardiologist) pretty much dismissed it, and the company lied and said I didn't return the booklet with it with notes. I sent a HUGE note saying I wanted to know what that incident was, exactly. The clinic staff always dismisses my Fitbit Charge HR reports, too, but it is consistently within 1-2 beats of their devices. What it does NOT handle well, however, is sudden dips or spikes. What you're having is dangerous, according to what I've been told (during an ECHO treadmill test). So keep banging on the pipes until you get someone to pay attention and consider finding another dr. who will.