Comparison of the Efficacy of Online Dialysis Obtained Through Arteriovenous Fistula and Hemodialysis Catheter in Maintenance Dialysis Patients with an Equal Blood Flow Rate

Abstract

Vascular access is essential in hemodialysis and provides essential access to the patient's peripheral circulation for effective treatment of renal dysfunction. In hemodialysis for chronic kidney patients, the adequacy of dialysis is influenced by several factors. Current studies on dialysis methods, specifically comparing the adequacy of online hemodialysis with AV fistula and with hemodialysis catheter access, show several challenges. The aim of our study is to compare the adequacy of hemodialysis with AV fistula versus access through a hemodialysis catheter. Methods: The study population in this research includes 150 adult patients with an average age of 62.64 ± 14.90 years, who were divided into two groups, the first group included 75 patients undergoing chronic dialysis with access through AV fistula and the second group It included 75 patients undergoing chronic dialysis with access through hemodialysis catheter with a maximum age difference of 5 years from the first group. In the following, the patients of both groups were subjected to dialysis with a blood flow rate of 300 ml/min, and the adequacy of dialysis was investigated according to the OCM model for All participants were periodically measured and documented during the study. Results: There is no significant difference between AVF and catheter groups in terms of age, gender and disease history. The values of blood pressure, UF and duration in the AVF group were significantly higher than the catheter group (P = 0.000). The OCM values measured in two groups showed that the median and IQR values of this variable were 1.145 (0.24) in the AVF group and 1.140 (0.30) in the catheter group (P = 0.759). Also, in the case of KT/V, its median and IQR is 1.16 (0.26) in the AVF group and 1.20 (0.43) in the catheter group (P = 0.601). There is a negative correlation between BMI and both OCM and KT/V variables (r=0.30, p=0.000). The correlation between other factors and OCM and KT/V values is not statistically significant.