Hahaha, I think they are used to it, mine goes that high too!
When I do lots of example readings, before GP and hospital appointments, mine are high for the first few days and then they calm. I generally leave the monitor on the kitchen table all ready to rock then just slip it on half a dozen times a day. I become pretty blasé about it then. My problem is that I'm on a migraine med that they'd have to stop immediately if my blood pressure becomes too high so it always freaks me out. It would be like removing my lifeline. I kid you not!
I once mentioned that I had WCS to a young nurse who looked very sympathetic and said 'oh I'm not aware of that disease, could I take some detail down?'.