Results of Primary Arteriovenous Fistulas Formation with Different Types of Anastomoses in the Early Postoperative Period in Patients on Programmed Hemodialysis

Abstract

The study includes the analysis of the results of using the different types of arteriovenous anastomoses in the formation of arteriovenous fistulas and their impact on fistula maturation in the early postoperative period. One of the main aspects of the work is to determine the optimal type of anastomosis to ensure the proper functioning of arteriovenous fistula that is an important element of vascular access in patients on renal replacement therapy. It is important to consider such factors as the diameter of formed arteriovenous fistula, the blood flow velocity through it, the incidence of complications and the duration of its functioning. The study also takes into account the impact of patients’ characteristics, such as age, condition of arteries and veins, as well as general health indicators on the results of surgery. Taking these factors into account allows to identify the groups of patients who can benefit most from a particular type of anastomosis.
 During the sample period, 384 patients with terminal stage of renal failure aged 20 to 84 years undergoing programmed hemodialysis, the native arteriovenous fistula was formed. It was found that 94.01 % of arteriovenous fistulas were successful in the early postoperative period. The average age of these patients was 44.2 years, while unsuccessful cases developed in people with an average age of 66.8 years. It was also found that within an hour after surgery for the formation of an arteriovenous fistula with the type end-to-side anastomosis, its diameter increases from 2.08±0.42 mm to 2.96±1.68 mm, and the blood flow velocity increases from 21.4±7.6 ml/min to 212.4±74.6 ml/min. The risk factor for effective fistula formation, in addition to age, is the diameter of vessels, anatomical features of the venous system, the presence of concomitant pathology (primarily diabetes mellitus).
 The obtained results can serve as a basis for the developing of recommendations for the optimal choice of anastomosis type for certain categories of patients who will undergo renal replacement therapy. The study is aimed at improving the results of surgical treatment and increasing the quality of life of patients with chronic renal failure.