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Value of color Doppler sonography in the assessment of hemodialysis access dysfunction

Khaled M Moghazy1

  • 1Department of Radiology, King Faisal University, Dammam, Saudi Arabia. moghazykhaled@yahoo.com

Saudi Journal of Kidney Diseases and Transplantation : an Official Publication of the Saudi Center for Organ Transplantation, Saudi Arabia
|December 30, 2008
PubMed

Insights

Color Doppler sonography (CDS) effectively assesses arteriovenous fistula (AVF) dysfunction, identifying stenosis and thrombosis with high sensitivity. This noninvasive technique aids in diagnosing AVF complications for hemodialysis patients.

Area of Science:

  • Vascular Surgery
  • Diagnostic Imaging
  • Nephrology

Background:

  • Arteriovenous fistulas (AVFs) are crucial for long-term hemodialysis (HD).
  • High complication rates associated with AVFs necessitate efficient diagnostic tools.
  • Assessing AVF dysfunction is vital for maintaining effective vascular access.

Purpose of the Study:

  • To evaluate the diagnostic efficiency of Color Doppler sonography (CDS) in identifying arteriovenous fistula (AVF) dysfunction.
  • To determine the sensitivity of CDS in detecting various AVF complications.

Main Methods:

  • A prospective study involving 55 patients with AVF dysfunction over 29 months.
  • Color Doppler sonography (CDS) was performed to assess AVF anatomy and hemodynamics.
  • Findings were compared with clinical presentation and, in some cases, angiography.

Main Results:

  • CDS identified stenotic segments in 23 patients and venous thromboses in 16.
  • Venous aneurysms were detected in six patients; venous hypertension and steal syndrome in two each.
  • CDS demonstrated a high sensitivity rate of 96.4% for AVF dysfunction.
  • Two cases of subclavian vein stenosis were missed by CDS but confirmed by angiography.

Conclusions:

  • Color Doppler sonography (CDS) is a highly sensitive and ideal noninvasive method for assessing AVF anatomy and hemodynamics.
  • CDS plays a significant role in diagnosing and managing AVF complications in hemodialysis patients.
  • While effective, CDS may miss certain central venous stenoses, warranting consideration of complementary imaging.

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