Cystatin C as marker of residual renal function in patients on peritoneal dialysis: relation with parameters of peritoneal function.

Introduction: Cystatin C (CysC) is a nonglycosylated protein of low molecular weight not influenced by age, sex or inflammation. The aim of this paper is to ascertain the usefulness of serum CysC level determination in peritoneal dialysis (PD) patients.

Material And Methods: CysC serum levels were determined in 80 PD patients.

Inherent high peritoneal transport and ultrafiltration deficiency: their mid-term clinical relevance.

Background: High peritoneal transport has been associated with poorer outcome in peritoneal dialysis (PD) patients, but not necessarily because of PD-dependent conditions. Our primary objective was to analyse the influences of baseline peritoneal small solute transport and ultrafiltration (UF) capacity on patient and technique survival, after adjusting for comorbid conditions. A secondary objective was to determine whether high transport was associated with basal comorbidity.