I distrusted one nurse because he did things different than I expected and wouldn't explain why. I requested for him not to care for me. A couple weeks later he quit. I guess I wasn't the only one who had problems with him. I learned that the catheters have different directives, but nobody seems to know or care.
Some catheters are supposed to deteriorate with betadine, others can only use betadine.
You only know by checking with the manufacturer of your catheter. This can be like pulling teeth. I have to continue on a catheter. I want to do the best I can to prevent infection, so I insist that I wear a mask during any time the catheters are open and during the site care. I say I insist, because the unit I was in didn't do this until I requested it, now they do it for other patients too.