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USIDMS Extracranial Carotid

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Question
Answer
What is the first branch off of the ECA?   Superior thyroid artery  
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What are 3 indications for a carotid doppler?   CVA, TIA, and RIND  
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What is the formula used to calculate % diameter stenosis?   (1-residual lumen) x 100% / normal lumen  
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What are 3 ways to differentiate ICA from ECA?   ICA does not have extracranial branches, it is typically larger than ECA, and is typically more posterior.  
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True or False, ICA is not affected by light temporal augmentation.   True  
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True or False, ICA is low resistance.   True  
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What artery does the right common carotid artery branch off of?   Right brachiocephalic artery (innominate artery)  
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What does the Doppler waveform term "tardus parvus" describe?   Low velocity flow with a color bruit  
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What is used to dissolve clots in patients experiencing an ischemic stroke?   Tissue plasminogen activator  
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When do TIA symptoms resolve?   Within 24 hours  
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