AI Article Synopsis

  • Arteriovenous fistula (AVF) complications are categorized by their outcomes, and this review highlights the use of colour Doppler (CD) and pulse wave Doppler (PWD) in addressing both early and late complications of native and prosthetic AVFs.
  • Diagnosis of inflow or outflow stenosis is crucial since these issues can lead to vascular access failure and complications like insufficient AVF maturation for dialysis.
  • While post-implantation complications are often linked to early issues, late complications can arise from mismanagement or structural abnormalities, and high-resolution ultrasound is beneficial for assessing these complications, although phlebography remains the most sensitive and specific diagnostic tool.

Article Abstract

Arteriovenous fistula (AVF) complications are classified based on fistula outcomes. This review aims to update colour Doppler (CD) and pulse wave Doppler (PWD) roles in managing early and late complications of the native and prosthetic AVF. Vascular access (VA) failure occurs because inflow or outflow stenosis activates Wirchow's triad inducing thrombosis. Therefore, the diagnosis of the tributary artery and outgoing vein stenosis will be the first topic considered. Post-implantation complications occur from the inability to achieve AVF maturation and dialysis suitability due to inflow/outflow stenosis. Late stenosis is usually a sequence of early defects repaired to maintain patency. Less frequently, in the mature AVF or graft, complications are acquired 'de novo'. They derive either from incorrect management of vascular access (haematoma, pseudoaneurysm, prosthesis infection) or wall pathologies (aneurysm, myxoid valve degeneration, kinking, coiling, abnormal dilation from defects of elastic structures). High-resolution transducers (10-20 MHz) allow the characterization of the wall damage, haemodynamic dysfunctions, early and late complications even if phlebography remains the gold standard for the diagnosis for its sensitivity and specificity.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8607320PMC
http://dx.doi.org/10.1177/11297298211018062DOI Listing

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