Again.. so many varied responses !
At our HD facility we have been advised to change the dressing only once a week, as the more it is exposed to air, the greater the chance of contamination. Thoise who have had their cath for a month or more, need no dressing at all.
We use the breatheable dressings.. not occlusive. They stick quite well, and cover nicely. Use betadine to cleanse the area first unless otherwise stated by the brand of cath.
We USED to just use gauze and paper tape, but no more.
Then again, this could change.. seems like every time we turn around, they are changing the P&Ps on us !