High rates of protein intake are associated with an accelerated rate of decline of residual kidney function in incident peritoneal dialysis patients.

Background: Preservation of residual kidney function (RKF) is a relevant objective in peritoneal dialysis (PD) patients. The influence of dietary protein intake (PI) on this variable has not been adequately investigated.

Methods: Following an observational design, we studied 336 patients incident on PD, with a minimum follow-up of 6 months.