Comparison of changes in pulse wave velocity in patients on peritoneal dialysis and hemodialysis

Cardiovascular disease is the leading cause of death of dialyzed patients. Aortic stiffness, evaluated by the carotid-femoral pulse wave velocity (cfPWV), is now considered as a prognostic factor for cardiovascular mortality in patients with chronic kidney diseases. The peritoneal dialysis (PD) patients had significantly stiffer arteries. cfPWV was 9.12 ± 2.7 m/s in PD patients without significant correlation compared to hemodialysis (HD) patients (8.97 ± 2.52 m/s). In the univariate study, we found a statistically significant correlation between PWV and age (P = 0), between the pulse wave velocity and phosphorus (P = 0.46), between the VOP and PTH (P = 0.013) and between PWV and dyslipidemia (P = 0.014). Other variables such as phospho-calcic product, hemoglobin, total cholesterol, and KT/V were not significant. To identify the risk factors independently linked to the event, we conducted a multi-varied analysis. A correlation was found between VOP and dyslipidemia (P = 0.008). The other variables were insignificant.