Combination of Medium Cut-off Dialyzer Membrane and Diet Modification to Alleviate Residual Uremic Syndrome of Dialysis Patients

The study will compare achieved levels of protein-bound uremic toxins with dialysis using a medium cut-off membrane compared to the treatment by online haemodiafiltration with a high-flux dialysis membrane. In the second phase of the study dietary fiber and short-chain fatty acid intake will be increased to verify a possible additional reduction in the levels of protein bound uremic toxins.