After my husband returned from the hospital, I have had trouble sticking the venous. The nurse said maybe they came too close when they dialyzed him in the hospital and messed up the tracks. I have been able to start a new buttonhole in the arterial--it has always been easy to stick. But I have so much trouble with the venous! And the nurse noticed this week what I have tried to tell them for so long--it wiggles or moves.