(HealthDay News) — A proximal radial artery endovascular arteriovenous fistula to allow vascular access in patients who require hemodialysis remains highly functional at 2 years, according to a study recently published online in the Journal of Vascular Access.

Gerald A. Beathard, MD, PhD, from the University of Texas Medical Branch in Galveston, and colleagues reported the 2-year cumulative patency rate for a multicenter cohort of 105 endovascular arteriovenous fistula cases. Data were extracted from electronic health records.

The researchers found that a physiologically mature arteriovenous fistula (blood flow ≥500 mL/minute and a target vein internal diameter ≥4 mm) was obtained in 98% of cases. In 95% of cases, a clinically functional arteriovenous fistula (supporting 2-needle dialysis according to the patient’s dialysis prescription) was achieved. In 8 cases, there was access failure during the study period. At 6, 12, 18, and 24 months, the cumulative patency rate was 97.1, 93.9, 93.9, and 92.7%, respectively. A postprocedure patient evaluation indicated a high level of satisfaction.

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“The dramatic difference in durability between the endovascular fistulas and the surgically created ones is striking,” Beathard said in a statement. “The ability to quickly and easily create a fistula that will last a long time, without surgical trauma or the need for additional procedures, could represent a significant advance in dialysis patient care.”

One author disclosed financial ties to Avenu Medical, which manufactures the vascular access system.


Beathard GA, Litchfield T, Jennings WC, et al. Two-year cumulative patency of endovascular arteriovenous fistula. J Vasc Access. doi:10.1177/1129729819877780