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Ultrasound Vascular Registry Questions with
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What resistance is the celiac artery/axis?
Ans: Always low resistance
Normal CA velocities
Ans: 50-60 cm/s
Abnormal ca velocity
Ans: >200 cm/s
Abnormal sma and ima velocities
Ans: >275 cm/s
What do you see when the Celiac axis is occluded?
Ans: Hepatic artery is retrograde because its supplying the Splenic artery
How many vessels are involved with chronic mesenteric ischemia?
Ans: 2
How many vessels are involved with bowel ischemia?
Ans: 3
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,What does a high RI in a renal artery indicate?
Ans: Intrinsic kidney disease
What does a high acceleration time indicate in a renal artery?
Ans: Proximal stenosis
What is normal PSV for renal arteries
Ans: 74-127 cm/s
What is normal RAR, RI and AT for renal arteries
Ans: RAR: <3.5
RI: <0.8
AT: <0.1 seconds
Abnormal PSV for renal arteries? What % stenosis does it indicate?
Ans: >200 cm/s, 60%
Normal AVF velocities PSV & EDV
Ans: PSV 150-300 cm/s
EDV 60-200cm/s
What is the minimum normal AVF FLOW VOLUME
Ans: 800 ml/min
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, Minimum diameter for AVF and graft creation: For vein AVF
Ans: 2.5mm
Minimum diameter for AVF and graft creation: For vein synthetic graft
Ans: 4mm
Minimum diameter for AVF and graft creation: For artery graft or AVF
Ans: 2mm
Is the prox or distal end larger in reversed vein graft?
Ans: DISTAL
NASCET: Symptomatic pts with greater than __% ____ (area or
diameter) stenosis
Ans: 70%, diameter
Normal venous filling index (VFI)
Ans: <2.0
In severe reflex the venous filling index is
Ans: >10
What is the normal residual volume fraction (RVF)
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