One in 200 patients are given oral valium (5 mg) before ambulatory vein surgery, and
1) only if they are driven to and from the office by a family member or friend; and
2) if they are deemed to be very nervous at the time of initial consultation. Most patients do not need any type of anxiolytic or sedation in my practice.
These medications are mostly for the convenience of surgeons who need more time to do the procedure "without interruption" from talkative patients.