My resting heart rate is so low now that while they were prepping me in the procedure room, my heart was "racing" at about 61 bpm. I said "I must be nervous because my heart rate is higher than normal." The doctor and nurse both said "HIGHER!?!" and said something about it being much lower than most, under the circumstances. That's the last thing I heard before I was out like a light...........
That's the exact same thing that happened to me, the nurse kept checking the connection to see if the HRM was working ok.
I had both ends done at the same time, clean upper and lower..