csheprn

So I am an ER RN who recently started doing home infusions. I have only been dealing with ports for about a year now so I’m no expert but there is one patient who I can’t figure out. The PT is on third portocath in one year and all three ports have had their own issues. This newest one has started to move around, into shoulder and lower on chest. I can no longer get blood return. I’ve tried the tricks such as coughing and raising their arms. What would cause a brand new port to move around and become dislodged? This port is accessed twice weekly.