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Background . Preservation of residual renal function in chronic dialysis patients has proven to be a major predictor of survival. The aim of the present study was to investigate an ability of the combined use of N-acetylcysteine and high-flux biocompatible haemodialysis membranes to improve residual renal function in haemodialysis patients.  Patients and Methods . Chronic haemodialysis patients with a residual urine output of at least 100 mL/24 h were administered oral an N-acetylcysteine 1200 mg twice daily for 2 weeks. Treatment group included patients treated with dialysers using high-flux synthetic biocompatible membranes. Control group included patients treated with dialysers using low-flux semisyntetic triacetate haemodialysis membranes.  Results . Eighteen patients participated in the study. The residual glomerular filtration rate showed a nonsignificant trend for increase in both groups. The magnitude of GFR improvement after N-acetylcysteine administration was less pronounced in the group treated with high-flux biocompatible membranes: +0.17 ± 0.56 mL/min/1.73 m 2  in treatment group and +0.65 ± 0.53 mL/min/1.73 m 2  in control group ( P  < 0.05).  Conclusion . In this study of favorable effect of N-acetylcysteine on residual renal function in chronic haemodialysis patients may be less pronounced when using high-flux biocompatible, rather than low-flux semisyntetic, HD membranes.

isrn nephrology

Effect of N-Acetylcysteine on Residual Renal Function in Chronic Haemodialysis Patients Treated with High-Flux Synthetic Dialysis Membranes: A Pilot Study