ARRS 2022 Abstracts

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E2019. Endovascular Arteriovenous Fistula Formation: What a Diagnostic Radiologist Needs to Know
Authors
  1. Agnieszka Boron; Johns Hopkins Hospital
  2. Gray Lyons; Johns Hopkins Hospital
  3. Javad Azadi; Johns Hopkins Hospital
Background
Endovascular arteriovenous fistula (AVF) formation is a novel technique to create fistulas for hemodialysis under imaging guidance, forgoing the typical surgical procedure. With endovascular AVF, there is shorter referrer-to-procedure time compared to surgery, so performing and interpreting preprocedural imaging is important. Preprocedural ultrasound is performed to noninvasively map a patient's arterial and venous anatomy in the extremity of interest to determine suitability for the procedure. Following the procedure, patients undergo follow-up ultrasound vascular mapping to ensure patency and successful creation of the fistula. With the increase in use of endovascular AVF, it is vital for radiologists to be able to obtain and interpret both the pre- and postprocedure ultrasound findings.

Educational Goals / Teaching Points
This educational exhibit will review what endovascular AVF is, what diagnostic radiologists need to know about it, how to perform and interpret preprocedure imaging to identify eligible candidates, and how to perform and interpret postprocedure imaging to assess patency of the newly created fistula.

Key Anatomic/Physiologic Issues and Imaging Findings/Techniques
This educational exhibit will feature ultrasound and venogram modalities to showcase what a radiologist needs to know before and after the endovascular AVF procedure.

Conclusion
The number of endovascular AVF procedures is steadily growing. Radiologists must be able to recognize how to appropriately screen candidates using ultrasound and interpret follow-up imaging to ensure lasting patency.