Hemodialysis access ultrasound

Area of Science:

• Vascular Surgery
• Nephrology
• Radiology

Background:

• Increasing prevalence of end-stage renal disease necessitates reliable hemodialysis access.
• Hemodialysis access options include native arteriovenous fistulas (AVFs) and synthetic arteriovenous grafts.
• AVFs offer superior longevity but have higher primary failure rates compared to grafts.

Purpose of the Study:

• To highlight the importance of maintaining hemodialysis graft and fistula patency.
• To emphasize the role of ultrasound in diagnosing access complications.
• To guide clinicians in optimizing ultrasound imaging for vascular access.

Main Methods:

• Noninvasive imaging using ultrasound for access evaluation.
• Detection of stenosis in access or draining veins.
• Identification of abnormalities like pseudoaneurysms, steal syndrome, and infection.

Main Results:

• Ultrasound is sensitive in detecting access or draining vein stenosis.
• Ultrasound aids in evaluating other graft or fistula abnormalities.
• Close monitoring, including ultrasound, can prolong access survival.

Conclusions:

• Ultrasound is a valuable noninvasive tool for assessing hemodialysis access complications.
• Careful technical execution and awareness of diagnostic pitfalls are essential for accurate ultrasound interpretation.
• Optimizing ultrasound use can contribute to improved hemodialysis access longevity.