Abstract: 【Abstract】Objective To explore the application value of indwelling needle for dialysis in the establishment of buttonhole tunnel for autologous arteriovenous fistula (AVF). Methods A total of 67 patients on maintenance hemodialysis (MHD) in the Hemodialysis Center of Shanxi Nuclear Industry 215 Hospital were selected. Thirty-two of the patients with AVFs to establish the buttonhole tunnel of internal fistula using puncture and indwelling needle were assigned in observation group; 35 of the patients with AVFs used traditional sharp needle puncture method to establish internal fistula buttonhole tunnel were assigned in control group.
Success time, success rate, one-time success rate of blunt needle insertion, and late local stenosis rate were compared between the two groups. Result Compared to control group, observation group had a short success time (8.54±1.28 vs. 12.65±2.38 days, t=0.65, P=0.001) and a high success rate to establish the internal fistula buttonhole tunnel (84.38% vs. 71.43%, χ2=23.251, P＜0.001). Compared to control group, observation group had a higher success rate of blunt needle insertion after success of the buttonhole tunnel (100% vs. 85.7%, χ2=21.201, P＜0.001) and a lower rate of local stenosis in the later period (100% vs. 85.7%,χ2=21.201, P＜0.001). Conclusions The use of indwelling needles for dialysis to establish an internal fistula vascular
buttonhole tunnel is a better method to establish a buttonhole tunnel, with shorter success time, higher success rate, simple operation, and fewer complications.

Key words: Indwelling needle for dialysis, Buttonhole tunnel establishment, Autologous arteriovenous fistula, Hemodialysis