I am the nurse PICC insertion provider in the radiology dept. Â Our radiologist insists that I am far safer placing a long wire w a soft tip then floating the PICC catheter over the wire. Â The wires now avail have a very floppy tip, and also have markings to see how far i advance. Â At one time we had "heard" that a nurse may not lead w a wire past the shoulder. Â Cannot locate anything evidence based to back up this claim. Â Have checked our state nurse practice act as well as INS standards to no avail. Â HELP??