At my hospital, there are two levels of PCA. If you are at level I, you can take vital signs and do basic patient care (bath, feed, etc.). You can apply a nasal cannuli if someone is supposed to be on O2 but took it off. You can do mouth suction if someone needs it, but you can't do any other kind of suctioning like nasopharynx or trach suctioning. You can get certain urine samples and poo samples. If you are at a level II, you can take out Foleys and IV's and do blood draws. We don't see chest tubes or EKGs or critical patients on my unit, so I'm not sure about those. You do help transfer patients between units or to radiology, etc., and you do have to decontaminate the areas that your patient spills bodily fluids, and always decontaminate the shower room between patients. You do change sharp boxes. You don't do dressing changes.