Hello and Welcome to ‘Ask A Doctor’ service.
I have reviewed your query and here is my advice.
I understand your concern and would explain that the high pulse could be related to a physiological reaction to waking up. You should know that waking up imposes a high stress
to the body. From the other hand, considering your medical history for orthostatic hypotension
, it be related to this disorder.
Nevertheless, I recommend consulting your your attending physician and performing some further tests:
- A cardiac ultrasound
and a resting ECG
- An ambulatory 24-48 hours ECG monitoring to examine your heart rhythm trends for a prolonged time
hormone levels for thyroid gland dysfunction
plasma levels for possible adrenal gland dysfunction.
Hope you will find this answer helpful!