Vascular access flow reduction for arteriovenous fistula salvage in symptomatic patients with central venous...

Area of Science:

• Vascular Surgery
• Nephrology
• Interventional Radiology

Background:

• Central venous stenosis or occlusion significantly impacts hemodialysis vascular access functionality and patient well-being.
• Conventional treatments like angioplasty and stenting for central venous lesions often face challenges with recurrence and non-correctability.
• Surgical bypass is invasive, and access ligation can lead to catheter dependency.

Purpose of the Study:

• To evaluate the efficacy of a precision inflow banding procedure for managing symptomatic central venous obstruction in hemodialysis patients.
• To assess the ability of this technique to limit vascular access flow and pressure while preserving access functionality.

Main Methods:

• Retrospective identification of patients with symptomatic central venous occlusive disease who underwent autogenous vascular access inflow restriction.
• All patients had previously failed angioplasty and stenting attempts.
• A precision banding procedure was employed for access inflow reduction, incorporating real-time intravascular flow monitoring.

Main Results:

• Twenty-two patients (mean age 43 years) were included; 40.9% were women, 36.4% obese.
• Mean access flow significantly decreased from 1640 mL/minute to 820 mL/minute post-banding (P< .01).
• Access salvage was achieved in all patients, with prompt resolution of swelling in 20 individuals. Two fistulas failed after 8 and 13 months, with a mean follow-up of 8 months.

Conclusions:

• The precision inflow banding procedure successfully resolved symptoms associated with non-correctable central venous lesions in hemodialysis patients.
• This technique effectively maintained vascular access functionality, offering a valuable alternative for complex cases.
• The study highlights the procedure's role in salvaging vascular access and improving patient outcomes.