SUBJECTIVE GLOBAL ASSESSMENT FOR THE DIAGNOSIS OF PROTEIN–ENERGY WASTING IN PERITONEAL DIALYSIS PATIENTS

Background and objectives: Subjective global assessment (SGA) has been demonstrated to be a reliable method for protein-energy wasting (PEW) in CKD patients. Few data are available on PEW evaluation in chronic peritoneal dialysis (CPD) patients. This study has two purposes, (1) the prevalence of PEW by 7 point SGA; (2) the correlation between SGA and PEW. Methods: This study enrolled 146 patients (71 males and 75 females) from the PD unit of National Cheng Kung University Hospital, Tainan, Taiwan. Patients were divided into a PEW and non-PEW groups. We measured anthropometric, 7-points SGA, biochemical parameters, body composition. Results: PEW was present in 57 (39%) patients, Among the SGA components, the most frequent abnormality in patients with PEW were appetite, GI function, activity, stress, muscle score, and total SGA score (P< 0.0001). Hb, HCT%, serum albumin, potassium, uric acid were lower in PEW (P< 0.05). In body composition, lower fat% and higher water % of total body and lean mass in PEW patients (P< 0.05). 32 patients with severe and mild malnutrition (SGA 2~4 score) had 24 (75%) patients with PEW, 46 patients with SGA 5 score had 21(46%) patients with PEW, 68 patients with SGA 6~7 score had12 (18%) with PEW. Conclusions: The prevalence of PEW was 39% in our CPD patients, malnutrition from SGA score can reflect the status of PEW in CPD patients.