It depends on the hospital and the unit. I am a CNA in the NICU at my hospital, and I do things such as stock, move babies in the unit, help with admits, discharges, little tasks here and there. I am able to do patient care. I can feed babies, change diapers, take temps and blood pressures, pretty much the basic cares for the baby. This is if the nurse is busy with another baby or is on lunch, etc. Sometimes they will let me do it just because :) it's a great place to work and I can't wait to be a nurse here.