The presentation examines the role of residual renal function (RRF) in dialysis patients and its place in mathematical models of dialysis adequacy. It reviews the theoretical background of urea kinetic modeling and highlights its assumptions and limitations, emphasizing that residual renal clearance and dialysis clearance are not equivalent. Clinical studies are presented to show the importance of preserving RRF and the limitations of relying solely on simplified indicators such as Kt/V

RRF2007var2.ppt