Vascular Complications of AV Fistula Management

Major Vascular Complications

The American College of Radiology recommends regular monitoring to detect changes in thrill or bruit, prolonged bleeding after decannulation, or arm swelling, to identify potential vascular complications early 1, 2
Venous stenosis is the primary precipitator of access failure, causing increased pressure within the access and decreased blood flow, ultimately leading to thrombosis if left untreated, according to the American College of Radiology 1, 2
The American Journal of Kidney Diseases suggests that percutaneous transluminal angioplasty (PTA) or surgical revision is indicated when stenosis reaches 50% of lumen diameter and is associated with clinical/physiologic abnormalities 3
Endovascular interventions have become first-line treatment for dialysis access thrombosis, as recommended by the Journal of the American College of Radiology 2
Surgical thrombectomy may be required in cases where endovascular approaches fail, according to the American Journal of Kidney Diseases 4

Steal syndrome (limb ischemia) is characterized by distal coldness, pain during dialysis, decreased sensation, weakness, and skin changes, and requires prompt intervention to prevent irreparable nerve injury, as stated by the American Journal of Kidney Diseases 4
Mild ischemia often improves with time and requires symptom-specific therapy, while severe ischemia requires urgent surgical intervention, according to the American Journal of Kidney Diseases 4

Untreated access infection may lead to bacteremia, sepsis, hemorrhage, and death, and surgical exploration and removal of any infected graft or graft segment is necessary, as recommended by the American Journal of Kidney Diseases 3
Broad-spectrum antibiotics should be initiated, with a complete 6-week course for graft infections, according to Praxis Medical Insights 6

Regular monitoring using noninvasive and invasive methods to assess blood access flow rate, access recirculation, and dialysis venous pressure is essential to detect potential vascular complications early, as recommended by the Journal of the American College of Radiology 1, 2
Early identification of patients with progressive kidney disease and protection of potential native fistula construction sites are crucial for prevention, according to the American Journal of Kidney Diseases 7
Implementation of multifaceted quality assurance programs to detect vascular accesses at risk can help prevent complications, as stated by the American Journal of Kidney Diseases 7

Delaying evaluation of access dysfunction can lead to thrombosis and access failure, and attempting to cannulate through or near problematic sites can exacerbate complications, as warned by Praxis Medical Insights 5, 6
Failing to recognize early signs of infection or ischemia can lead to delayed intervention and worse outcomes, according to the American Journal of Kidney Diseases and Praxis Medical Insights 4, 6