Abstract
Article: Sonographer’s Role in the Screening, Diagnosis, and Treatment of Dialysis Fistula Pseudoaneurysms
Authors: Ashley Gaspard, RDMS, RVT
Category: Vascular
Credit: 0.75 SDMS CME Credit
Objectives: After studying the article entitled “Sonographer’s Role in the Screening, Diagnosis, and Treatment of Dialysis Fistula Pseudoaneurysms,” you will be able to:
Understand the sonographic features of a pseudoaneurysm (PSA)
Compare the diagnostic efficacy of correlative imaging modalities in assessing PSAs in diabetic patients
Articulate the sonographic protocol for assessing dialysis access graft and documenting an associated PSA
Which of the following is a frequent contraindication for patients in obtaining CT or MRI studies? A. Cirrhosis B. PSA C. Arteriovenous fistula (AVF) D. Chronic kidney disease
Which of the following dialysis access methods is the safest and has the least associated complications? A. Tunneled catheter B. AVF C. Arteriovenous graft D. Synthetic graft
Infection, thrombosis, central venous stenosis, and restricted blood flow are complications more prone to occur with which dialysis access method? A. Tunneled catheter B. AVF C. Arteriovenous graft D. Synthetic graft
Which of the following is the most common cause of PSA in dialysis patients? A. Inflammation B. Infection C. Intraluminal thrombosis D. Repetitive venipuncture
Which of the following imaging modalities is the gold standard for diagnosing a PSA? A. Doppler sonography B. Fluoroscopy C. Venography D. Angiography
Which of the following sonographic findings is the most useful in differentiating a true aneurysm versus a PSA? A. Swirling low-level echoes on grayscale sonography B. Identification of the connecting neck from the supplying vessel C. Demonstration of to-and-fro flow on spectral Doppler D. Demonstration of a yin-yang sign on color Doppler
Which of the following findings is considered abnormal based on the dialysis access AVF protocol? A. Peak systolic velocities with 60° angle should be obtained B. Anastomosis velocities should be more than 400 cm/s C. Flow volume in the inflow vein should be greater than 800 cc/min D. Flow volume in the outflow vein should be greater than 500 cc/min
Footnotes