[Quantitative approach to dialysis adequacy (Part one)].

A quantitative assessment of dialysis and prescription of dialysis as therapy in every single patient have always been a continuous problem. Numerous efforts have been made to date to determine the kind of therapy for patients on haemodialysis on the basis of simple objective indices instead of clinical and laboratory parameters. Some of these indices have been widely accepted nowadays. Although the main clinical and laboratory parameters have still been currently applied in the assessment of peritoneal dialysis adequacy, serious quantitative approaches are made even in these cases regarding the more accurate therapy.