Did they perform a tilt table test? Some of your symptoms seem to be from orthostatic hypotension
(drop in bp when moving from a lying or sitting position to a standing position) what were the orthostatic blood pressures? Generally, a change of 20 or more in the upper (systolic) number shows orthostatic hypotension.
You didn't list any really substansive symptoms of anxiety
in your list above. Although anxiety CAN cause some of the symptoms above, this doesn't scream the cause to me.
could also be a cause, What has your heartrate been running? Are you on any cardiac medications? There are so many questions that need asked to list them all here. If your in the hospital, your in the best place to ask questions
. Your nurse is the best resource you have!! Ask them to take the time to answer and EXPLAIN the tests you have had, what they were looking for and what the results mean to you. Your doctor should also take the time to explain these as many times the nurse is not permitted to give results that have not been explained by the MD. Don't be afraid of taking up the doctors time by asking questions.