Carotid
Arterial
Venous
Definitions
Abdominal Doppler
100
What is amarosis fugax
Temporary loss of vision in one eye due to lack of arterial blood through the ICA or a small embolus
100
What is the flow pattern in the neck of a pseudoaneurysm
To and fro- or bidirectional
100
What does it mean if you see pulsatile flow in the femoral vein?
Heart failure
100
transmural pressure
Pressure acting to expand a vein
100
Describe the waveform difference between pre and post prandial SMA
Pre-prandial SMA waveform is high resistance whereas the post-prandial SMA is low resistance
200
What is the difference in the waveforms of the ICA and ECA
ICA is low resistance whereas ECA is high resistance
200
A 50% diameter reduction equals what area reduction
75%
200
Why would a vein lose its phasicity?
proximal obstruction
200
hepatopetal
traveling into the liver
200
Which vessels in the abdomen have low resistance flow
CA, SA, CHA, RA, post-prandial SMA
300
Name the 3 branches in order that come off the aortic arch
Rt brachiocephalic/innominate (Sub A and CCA), Lt CCA, Lt sub art
300
Claudication symptoms generally occur when the ABI is less than what
.90
300
Name the 3 types of veins in the lower extremity.
superficial, deep, and perforators (connecting)
300
peripheral resistance
How easy or how difficult something is accepting of blood
300
What are IVC filters for
preventing DVT from embolizing to the lungs
400
What does it mean when the vertebral artery flow is reversed
Subclavian steal
400
What is the difference between in situ and synthetic grafts
In situ is a vein from the body, usually the GSV, whereas synthetic is an artificial material
400
What 3 factors make up Vichow's triad
venous stasis, hypercoagulability, vein wall trauma
400
claudication
pain when walking, relieved by rest
400
What is and when is a tardus parvus waveform seen
increased acceleration time/time to peak and low velocity, seen in cases of proximal obstruction or stenosis
500
Describe the differences and how to tell apart the ICA and ECA
ICA tends to be larger, is low resistance, no branches. ECA is high resistance, has branches, is usually smaller and has the temporal tap
500
Name the 6 P's of arterial occlusion
Pulselessness, parethesia, paralysis, pallor, polar, pain
500
What are the 4 specific imaging characteristics when evaluating extremity veins for thrombosis?
spontaneous, augmentation, compression, phasicity
500
recanalization
opening of a vessel after it has been occluded
500
What is the formula for RI
(Peak systolic velocity- end diastole velocity) / peak systolic velocity
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