The CNA is called a Nursing Assistant I (NAI). They set up for admissions, stock the unit, assists the unit clerk, fold linen, stip down the bedspot on d/c...and on occasion might do a little patient care...on a feeder grower who POs well. Many who are in nursing school
and can advance to Nursing assistant II if they have completed their peds clinicals (NAII) or Nurse Technician (NT) if they are in their professional semester. They can take a patient assignment with an RN. They do more advanced care....such as OG feeds (though an RN/LPN much check placement), dressing changes (except deep wounds or ones around central lines), foleys, and can assess patients with an RN cosign. An RN can take an expanded assignment with an NA II/NT...such as 3 patients on 1:2 care....or a 1:1 with a 1:3 or easy 1:2. We have one per shift and it seems to work very well.....and the student nurses get great experience.
LPNs take their own assignment in the units as we have a full scope of practice in this state and hospital. The patients are covered by the charge nurse who takes no assignment....but we do 95% of the workload. The RN has to check blood products or certain IVP meds before we give them. We don't do the initial assessment or write a care plan or problem list.....so generally new admits are given to RNs.