Is it a "trigger" monitor? (meaning you have to trigger it when you feel a symptom) or is it a continuous read? Either way sometimes I feel those are useless. For me it showed that yep, my heart rate really does go up that high and the palpitations were a few pvc's and pac's, long run of sinus tach. I know there are instances where they are very helpful, so I guess I shouldn't say that. Do you get any syncopal episodes--feeling faint and dizzy? I sure hope they find something concrete soon!