Response to the poll:
My pulse is all over the place. But the general rule seems to be that on "bad" days (especially in a "crash") my resting pulse is higher and on "good" days it's lower. But I confess that I don't monitor it very closely most of the time. So I checked the "sometimes high, sometimes low" box.
A bit of a tangent (but I think it might be relevant for some):
I know you said "resting" pulse, which I think means sitting down. But I thought I'd mention that folks with any type of orthostatic problems might have a large swing in heart rate (HR) between lying down, sitting up, and standing. For example, my HR standing still (not walking, just standing completely still) ranges anywhere from 113 to 150. It's higher standing still than walking.
As I said, I don't usually monitor my HR to this level of detail. The only reason I know these particular numbers is because I decided to measure my blood pressure (BP) while standing up, the first thing in the morning, and before taking any of my meds (midodrine, florinef, salt, etc.).
I did these BP measurements for a couple of weeks because I wanted to see how low my BP got. The BP monitor measures both BP and HR. It works pretty quickly so I only have to stand still for a minute or two to get a reading.
Because it's a fairly short time to stand still I was not expecting such a large increase in HR. But that's what I saw. So, maybe I've developed POTS in addition to NMH after all these years? 150 is way more than a 30 beats per minute increase over my sitting/resting HR.
Before these measurements I could sense that my heart was going faster while standing (e.g., I'm at the sink trying to wash my hands) than it did 20+ years ago. But the degree of the increase was a bit surprising.
[ end of tangent, back to your regularly scheduled programming

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