Hi Claude – I am in the midst of this problem. I had RAI on 2/24
and became hypo in May and I swear at that time my heart took off.
I am on Verapamil (calcium channel blocker) to control this, but
it’s always pretty much in the high 90’s and lots of times higher.
For the past 24 hours I wore a heart monitor; so maybe this will tell
them something. It is so frustrating.