All these agents whether ativan
alprazolam etc are the benzodiazepene group of drugs whose primary role is the relaxation of the brain.they help in the acute anxiety
and are relatively safe drugs if used in small dosages for the short period of time.
Only problem is the addicting potential of them if used for a prolong period of time, mostly with out the proper indication.
I think you can take the medication for the procedure with out any reservations.