Hi @
kevinj . How long after STANDING IN PLACE did you wait before taking your hr ? The poor man's tilt table tests specifies taking bp and heart rates at 3 minutes and then again at 10.
Also, is 68 your actual resting point ? My hr is/was around 75 for the first 45 minutes after becoming supine but drops to the mid 60's after that. This has all changed for me recently tho as I'm now getting skipped beats and bradychardia.
Also, these readings can change so it's best to look for a pattern. I could barely stand up for 10 minutes when I tried the pmttt at one point. Other times I've been ok up to 13 minutes.
One big clue, for me anyways, was how much better I feel after being supine for an hour. And how crappy I feel after being upright. Movement, esp walking, seems to help because it forces blood flow.
Good luck. X