I have a home care patient who recently had a picc placed at a local hospital for ivf 3x week. After researching and looking at his picc (2 ports no clamps) I'm assuming his picc is valved. He has been getting D51/2 NS 1L 3x week via gravity for months via 24g piv until we were no longer able to get access. Previously a L would run in less than 2 hours free flowing by gravity. Now with the picc 1L is taking over 4 hours to run "wide open" by gravity!!! Does it have anything to do with this type of PICC? Any suggestions??? Nothing else has changed..same pole, same height, etc. I changed the dressing on the picc to check for kinks, occlusion etc to no avail. It's a brand new picc with great blood return and flushes with ease..