I work in combined SICU/MICU at a VA medical center in Oregon. We frequently have epidurals for post-op (AAA, lung surgery, various abdominal procedures) pain management. Our anesthesiologists usually have them all set up and infusing, but the ICU RNs do this once in awhile, usually for pts who were hypotensive during surgery. We assess dermatomes, respiratory status, and side effects hourly for the first 24 hours and may adjust the infusion within an ordered range. An anesthesiologist or CRNA reassesses the pt after arrival to ICU and at least every daily until the catheter is removed, and only they may give boluses by epidural. I haven't encountered an anesthesia provider who would let anyone else do epidural boluses.