Study guide for vascular final Flashcards
ICA waveform
Low resistance dipper signal
Which is not finding of an ICA occlusion
Reduced diastolic flow pattern
What is a TIA
Duration less than 24 hours
QA greater than 80% diameter reduction at origin ICA, peak systolic ratios
End diastolic velocity greater than 155 cm/sec
Normal vertebral a
Are asymmetrical
Placement of the Doppler sample volume
Should be parallel to the vessel walls
Fibromuscular dysplasia, affects what portion of the artery
??
How many stokes occur in the us
700,000
The innominate a divides into
Rt common carotid; rt subclavian
Where should the Doppler sample volume be kept during a carotid US
Small
Abnormal shape to the ICA
Proximal or distal disease/ occlusion
Contralateral ICA occlusion causes the ipsilateral ICA to be what
Velocities to be increased
Which portion of the ICA is evaluated during carotid duplex imaging
???From the distal straight segment
When determining the CCA Ratio, which segment would you take it form
???
Characteristic of subclavian steal
Reversal of blood flow in the vertebral artery
Systolic v at the origin of the ica that is less than 120 cm/s or is it supposed to be 125?
Question 18 test vascular chapter 2-4
A stenosis less than 50% diameter reduction
Intraoperative carotid imaging is which of the following
??
Transient partial or complete loss of vision
Am auroras fugax
Carotid body assist in regulation
Balance
1st branch of the ECA
Superior thyroid
Noise caused by tissue vibration
Bruit
Normal flow disturbance at the bulb
A boundary layer separation
Blood pressure cuffs should be how wide
20% greater than the diameter of the limb
What are the characteristic of the Doppler signal in the lower extremities
??
Normal pulse volume waveform should look like
??
When using color, what plan does the vessel demonstrate
Sagittal, long
What angle should the Doppler be at
60 degree
Compression therapy of pseudoaneursyms
It usually requires 30 to 60 minutes to be successful
What is going to cause a palpable thrill
??
If you have greater than 50% diameter in the lower extremity, what are your velocities going to look like
??
Calculate ABI in 4 questions, determine where the disease may be
??