URR vascular: practice exam Questions with 100% Correct Answers | Latest Update | Verified
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Module
URR vascular
Institution
URR Vascular
Velocities are usually higher at the proximal anastomosis site of a _____ ______ ______ because the
diameter of the graft increases distally - reversed in situ graft
Why is there no aliasing on CW doppler - CW uses two elements to send and receive sound
waves, PW only uses one
What is true rega...
URR vascular: practice exam questions
Velocities are usually higher at the proximal anastomosis site of a _____ ______ ______ because the
diameter of the graft increases distally - reversed in situ graft
Why is there no aliasing on CW doppler - CW uses two elements to send and receive sound
waves, PW only uses one
What is true regarding compression techniques on a pseudo with a larger stalk - thrombin
injection is more effective on pseudos with larger stalks than compressions
compressions must be done in 10 1 minute intervals with Color Doppler eval in between each
compression
Rest pain is found in patients with an ABI score less than - 0.5
Abnormal Allen test - when the radial artery is compressed and very little flow is seen to the hand
ulnar artery is occluded
palmar arch is not patent
Lower extremity veins that do not contain valves - IVC, Iliac veins and Soleal sinuses
Upper extremity veins that do not contain valves - SVC and innominate veins
Arteriography is the most sensitive test for arterial disease - T
_____% diameter or ____% area of a vessel is considered to be hemodynamically significant stenosis -
50, 75
A double peaked wave tracing is indicative of - vasospasm due to Raynaud's syndrome
,Veins that do not normally demonstrate spontaneous flow on pulse wave ultrasound exams -
PTV's, peroneals, GSV
Normal PBI - greater than or equal to 0.75
Vasculogenic impotence is diagnosed with a PBI of - <0.65
The ultrasound eval of a TIPS procedure should be performed within _____ hours of the operation to
establish baseline values for serial exams - 24
Negative Predictive Value (NPV) - number of correct neg dx / number of neg dx made
The PI of the normal aorta should be _____ than the PI of the popliteal artery - less
A PI of <______ indicates proximal obstruction - 5
Difference in protocol for hemodialysis graft vs hemodialysis fistula - graft- two sites of
anastomosis,
fistula- one site of anastomosis (protocol is the native artery prior to anastomosis, anastomosis site, vein
distal to anastomosis
When using the GSV as an in situ graft, all _______ must be marked down the leg so that they can be
closed - perforators
What would cause the ECA to have reverse flow in systole? - left CCA occlusion
the flow reversal from the ECA will provide the ICA with flow because the CCA cannot
An increase in aortic sac diameter of ______ cm or greater indicates a possible endoleak - 0.5
, Stages of restenosis after endarterectomy procedure - first month post op- suboptimal surgical
techniques
24 months post op- neointimal hyperplasia
2 years post op- progression of atherosclerotic disease
reactive hyperemia - a bright red flush on the skin occurring after pressure is relieved
Vasodilation will cause a triphasic waveform to become ______ - monopahsic
vasodilation lessens resistance, lessened resistance causes a more monophasic waveform
PW doppler is preferred over CW to determine the location of a stenosis in a vessel because CW has no
depth resolution and is preferred for higher velocities - T
Ascending venography - uses contrast that is injected at the ankle and the course is follow up the
leg to assess for DVT
Descending venography - used primarily to detect and quantify reversed flow from incompetent
venous valves
Flow velocity is not reported on a segmental pressures exam - T
Velocities below _____cm/s are considered normal in an AV fistula - 400
The arterial inflow to an AV fistula is usually ______ resistance and very turbulent while the venous
outflow is increased in pulsatility and turbulence - low
Vein of Giacomini - communicating vein between great and small saphenous veins
The _______ veins and the ______ veins are located deep within the calf tissue but are not considered
deep veins - gastrocnemius and sural sinus
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