Dialysis access induced limb ischemia corrected using quantitative duplex ultrasound

Area of Science:

• Vascular Surgery
• Pediatric Nephrology
• Diagnostic Imaging

Background:

• Dialysis access induced limb ischemia (DAILI) is a rare but serious complication following arteriovenous fistula creation, particularly in infants.
• Bridge graft fistulas have a higher incidence of DAILI compared to native fistulas.
• Surgical reduction of fistula flow is a management option, but carries risks of thrombosis or inadequate dialysis flow in pediatric patients.

Observation:

• Balancing fistula flow for effective dialysis and adequate limb perfusion is challenging in pediatric DAILI cases.
• Existing methods for flow reduction lack precise quantitative guidance, especially for young children.
• A novel approach using preoperative duplex ultrasonography was developed to quantitatively predict necessary flow reduction.

Findings:

• Preoperative duplex ultrasonography accurately predicted the required fistula flow reduction.
• Intraoperative duplex assessment confirmed the preoperative predictions at the operating table.
• A 3-year-old patient treated with this method experienced resolution of ischemic symptoms and maintained long-term dialysis access patency.

Implications:

• This technique offers a precise, quantitative method to manage DAILI in pediatric patients, minimizing risks associated with flow reduction.
• It enables the delicate balance between maintaining adequate dialysis flow and preserving limb perfusion.
• The described method holds potential for improving outcomes and long-term success of dialysis access in children.