According to our boss, AORN says you just have to cover the scrubs you have on, so we just throw a jacket on over our scrubs on the way in the OR. And our infection rate is less than 1%. We've been wearing our scrubs for about 6 years.
Demerol is a standing order for shivering on my unit. We also use Duramorph, but we give pain meds after 12 hours, and Toradol can be given every 6 hours after recovery.