doing stuff differently

Going from one hospital to another I've run up on some interesting differences and expectations of what nurses are allowed or expected to do. The only constant seems to be a sort of "what's wrong with you?" attitude if you say you haven't done a procedure before. I've worked mostly in critical care areas and differences can be vast. For instance, in one hopital where I worked, nurses did *all* ABGs; in others, nurses got the ABGs from A-lines, but RT got the rest; where I'm just leaving, RT does all of them, A-line or stick. As far as A-lines, I just no learned that in some places nurses are allowed to insert them. Another: I'd never worked anywhere nurses were allowed to put down small-bore feeding tubes. That one earned me some *looks* here. In some hospitals assorted fecal collection systems (rectal trumpets or pouches or the flexi-seal tubes) are routinely used and don't even require an order, in others not. What differences have others encountered?