Medical Clearance Requirements for AV Fistula Creation

Preoperative Evaluation

• Patients with chronic kidney disease should be referred for AV fistula creation when their kidney function is declining, to ensure adequate time for fistula maturation and potential revision if needed, according to the American Journal of Kidney Diseases guidelines 1, 2
• Duplex ultrasound is the preferred method for preoperative vascular mapping and should be performed in all patients before placement of an AV fistula, as recommended by the American Journal of Kidney Diseases 3

Patient Selection and Vein Preservation

• The American Journal of Kidney Diseases recommends protecting arm veins in patients with kidney disease or conditions likely to lead to end-stage renal disease, by avoiding venipuncture and IV placement in potential fistula sites 1, 2, 4
• Strictly avoiding subclavian vein catheterization is recommended due to the high risk of central venous stenosis, according to the American Journal of Kidney Diseases and Praxis Medical Insights guidelines 1, 2, 4

Timing and Maturation Assessment

• The American Journal of Kidney Diseases guidelines recommend creating an AV fistula at least 1 month, and ideally 3-4 months, before anticipated need for dialysis, to allow time for fistula maturation and potential revision procedures if needed 1, 2, 5
• A primary AV fistula is considered mature when the vein diameter is sufficient for successful cannulation and at least 1 month has passed since creation, as defined by the American Journal of Kidney Diseases 1, 6

Common Pitfalls to Avoid

• Premature cannulation of a fistula may result in infiltration, hematoma, and permanent loss of the fistula, according to the American Journal of Kidney Diseases 3
• The American College of Radiology recommends avoiding peripherally inserted central catheters (PICCs) in patients with advanced kidney disease due to similar risks of venous damage, and identifying accessory veins or venous side branches to prevent poor maturation 4, 7