Absolutely correct, supine, an upward increment of greater than or equal to 30 bpm paired with symptoms
of orthostatic intolerance meets the criterion
of POTS, regardless
of the absolute value of the heart rate. I highly recommend you get a tilt table test, acesew, as that can confirm the diagnosis of dysautonomia/POTS. You may need to go to a major teaching hospital to access one of these tests, if you are not already accessing your specialists through one.