Aim of this study is to evaluate, in a population of chronic kidney disease patients on dialysis (Stage 5D), the effect of treatment with isonatremic dialysis (vs conventional dialysis), during an observational period of 2 months each, on:

• control of interdialytic weight gain
• perdialytic tolerance in terms of adverse events occurring during all of the sessions of the study
• body composition and thirst measured monthly during the 4 months of follow-up.
• tolerance to treatment.

Inclusion criteria:

• Chronic Kidney Disease patient on dialysis (stage 5D)
• With plasma sodium concentration between 130 and 140 mmol/L
• Anuric
• Patient dialysed with dialysis machine allowing isonatremic dialysis treatment

Exclusion criteria:

• Patient with plasma sodium concentration below 130 or above 140 mmol/
• Pacemaker

Patients issued from dialysis units (hospital, clinic, non profit dialysis centers)

NC