I am new to PICU, I have a couple questions about CVC/PICC lines. We mostly use double lumen PICCs or triple lumen CVC. In the double lumen PICC I commonly see epi and maintenance in one lumen, fentanyl, versed, and vec in the other. In this case if I need to draw labs and this is my only access what is the process as far as which lumen and which meds do I pause? Also, can someone explain to me how I have things running at a fast rate but I'm not bolusing my meds in the same lumen and/or the other lumen? And let's say I have something I need to give like Zantac do I put it on the quad fuse with my sedation? My guess is I never want to mess with my pressor med, but I need some clarification. Any other info would be great. Thank you!!