Impaired fasting glucose association with mortality in nondiabetic patients on maintenance peritoneal dialysis

INTRODUCTION: The aim of this study was to investigate clinical significance of impaired fasting glucose (IFG) in nondiabetic patients on maintenance peritoneal dialysis (PD). METHODS: In total, 362 maintenance PD patients were enrolled and followed up for 2-years. According to 1997 definitions, patients were divided into 3 groups: diabetic (n = 85), nondiabetic with IFG (n = 62) and nondiabetic with normal fasting glucose levels (n = 215). After basal data were collected for cross-sectional analyses, mortality and cause of death were recorded for longitudinal analyses. RESULTS: After adjusting for related variables by multivariate logistic regression analysis, IFG was found to be positively associated with age but negatively associated with normalized protein nitrogen appearance and transferrin saturation in nondiabetic maintenance PD patients. Thirty nondiabetic patients had died after the 2-year follow-up. Cox multivariate analysis showed that age (hazard ratio: 1.037; 95% confidence interval: 1.002-1.073; P = 0.036) and presence of IFG (hazard ratio: 2.719; 95% confidence interval: 1.082-6.833; P = 0.033) were significant risk factors for all-cause 2-year mortality in nondiabetic maintenance PD patients. CONCLUSIONS: IFG, a preventable and treatable condition, was associated with all-cause 2-year mortality in nondiabetic maintenance PD patients.