I work in a unit in which we rotate through acute and all chronic areas. Our main chronic unit is 12 stations and runs 2 shifts MWF and 1 shift TTS, there is also a 4 station isolation unit and a 2 station home training unit We have 2 off campus units as well which run 6 stations each. Our acute unit is 5 beds, and from here we also do "all out of the units" ie ICU CCU etc. The staffing is mainly RNs but we do have 5 Ens as well. The Ens do not go to the acute unit or the education unit. They take a pt load but are not allowed to cannulate, perform assessments, give drugs (in accordance with legislature). In the main Chronic unit we have 5 staff to 12 patients. We try to have no more than 3 patients/dialysis trained staff member. I believe that what needs to be taken into consideration when asking this question is what is the patient mix like; how many co morbid conditions do they have; how compliant are they (food, fluids medications); what sort of age group are we looking at (I must work out our average pt age again - thinking about it it has to be over 70 years); what sort of access; what is their tolerance for dialysis: how do they travel - what is the liklihood of gettting them there on time for their appointment; how much education, review and reinforcment do they need, and what about emotional support. The list is endless. Just a bit of an Australian view