Since proper maintenance of PICC lines vary depending upon whether it is an open or closed end catheter, how do you know how to care for it if the patient doesn't know what type of catheter they have and the catheter was placed at another facility? If you don't know wouldn't you heparinize it? If so, isn't that introducing risk to the patient they might not need to be exposed to? Where can I find definitive recommendations for maintaining the various types of PICC lines. All I can really find is the general statement "follow your facilities policy/procedure". That's the problem, we need to establish our facilities policy/procedure. Do you always flush both lines of a double cath PICC when only one is used? What is the practice at your facilities?