Geriatric Nutritional Risk Index as a Screening Tool for Malnutrition in Patients on Chronic Peritoneal Dialysis

Background Malnutrition is common among peritoneal dialysis (PD) patients. Recently, the Geriatric Nutrition Risk Index (GNRI) was found to be a reliable tool for screening malnutrition in hemodialysis patients. However, the GNRI has not been validated in PD patients. Methods We studied 314 unselected, adult PD patients from a single dialysis unit. We compared their GNRI scores with their comprehensive Malnutrition-Inflammation Scores (MIS) and 7-point Subjective Global Assessment (SGA) scores. We randomly selected 106 patients for a repeated assessment, and the changes in their three indices were compared. Results Baseline GNRI was significantly correlated with MIS ( r = −0.487, P < .0001) and SGA ( r = 0.234, P