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USIDMS Extracranial Carotid

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How can you tell the difference between the ECA and the ICA?   The ICA is usually larger and more lateral. A temporal tap (TT) is used on the proximal ECA to help identify and slightly change part of the waveform. The ECA has extracranial branches.  
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What will cause the greatest change in blood flow?   The radius of the vessel.  
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Where might an Eddy current be located?   In the bulb of the Carotid artery.  
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What describes the time it takes to get from end diastole to peak systole?   Acceleration time  
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Proximal to a severe stenosis, will you have increased or decreased pulsatility of the waveform?   Increased  
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What are the 3 branches off of the aortic arch?   Right brachiocephalic, left common carotid, left subclavian  
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The right brachiocephalic is also known as what?   Innominate  
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What is the origin of the vertebral arteries?   The subclavian arteries  
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The ECA has a ________ type of resistance, whereas the ICA has what type of resistance?   high; low  
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With a transient ischemic attack or TIA how long does it take for the patient to recover?   Patient is fine in less than 24 hours  
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