Work in an ambulatory surgical center. Had a patient come in with TPN and Chemo infusing to his double lumen central line. Patient having a procedure done under IV sedation. Anesthesia had TPN infusion stopped, flushed line with 10cc NS and then started infusing Lactated Ringers. Anesthesia did this so that line could be used for sedation meds (fentanyl and versed). Patient had procedure (Celiac Plexus block) which lasted about 5 mins - LR continued infusing until finished (about 20 mins) and then TPN restarted. Was it okay to dc the TPN and use the line for meds and then restart the TPN. Pat has chemo and TPN infusing running continuously on outpatient basis.