This has been an ongoing problem for me. If I wake up in the middle of the night and move just slightly or turn around in bed, my heart rate shoots up to 100+ momentarily. Then settles back down to 60bpm.
I had an AFIB incident two years ago because of this. At that time my heart rate was shooting up to 130+bpm. This was mainly due to uncontrolled sleep apnea. I have that controlled now with BIPAP machine. I also take Xarelto for blood clot disorder.
My cardiologist and electrophysiologist are not concerned about the racing heart but I'd still like an explanation for it. All I have to do when I wake up in middle of the night is to stretch my legs or move to one side. This causes my HR to go way up from 60 to 100+. That seems abnormal to me.