Term
A small change in a vessels radius blood flow will produce a......? |
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Definition
Change four times as large |
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Term
How does the arteriole control the volume of flow into the capillary network? |
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Definition
Vasoconstriction and Vasodilatation |
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Term
What type of effect does respiration have on flow in the upper extremities compared with flow in the lower? |
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Definition
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Term
How does the CCA relate to the thyroid gland? |
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Definition
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Term
How does the ICA usually lie in the neck relative to the ECA? |
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Definition
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Term
Based on neurologic symptoms, how does transient ischemic attack differ from a stroke? |
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Definition
TIA's recover within 24 hours |
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Term
For the carotid sonogram, when should you interview a patient? |
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Definition
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Term
you should add transverse views of the ICA to your examination when you? |
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Definition
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Term
The primary usefulness for color doppler is as a landmark for? |
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Definition
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Term
The conventional relationship between the spectral waveform and the baseline is that the waveforms? |
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Definition
Above the baseline represent flow towards the transducer |
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Term
What is the best way to distinguish between the normal ICA and the ECA? |
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Definition
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Term
What is the a common method for distinguishing the ECA from the ICA when spectral waveforms are abnormal? |
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Definition
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Term
Along with the CCA and the ICA, what other vessel do most institutions require sample measurements of? |
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Definition
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Term
What is the best way to detect soft plaque? |
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Definition
Fill vessel with color/power doppler |
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Term
What does heterogenous plaque suggest? |
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Definition
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Term
The purpose of calculating the ICA/CCA ratio is to? |
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Definition
Grade stenosis and correct for errors |
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Term
From an ergonomic perspective, you would use electronic preset labels to? |
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Definition
Minimize use of the ultrasoun keyboard |
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Term
The position of the abdominal aorta becomes progressively anterior in the body as it turns caudally because it? |
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Definition
Follows the curvature of the spine |
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Term
The abdominal aorta supplies oxygenated blood to the? |
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Definition
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Term
What is the first branch of the aorta? |
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Definition
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Term
What is the basis for classifying an abdominal aortic aneurism as fusiform, saccular, or cylindrical? |
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Definition
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Term
You would have a patient fast before an abdominal aorta sonogram to? |
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Definition
Clear the body of bowel gas |
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Term
What approach may reliably display the sides of the abdominal aorta? |
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Definition
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Term
What should you use to help identify a pseudoaneurysm? |
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Definition
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Term
Why would you measure between an abdominal aortic aneurysm and the renal arteries? |
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Definition
Provide surgeons with the distance measurement |
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Term
What doppler should you use to determine flow direction in an arterial dissection case? |
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Definition
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Term
The landmark that allows you to locate the right renal artery is the vessel that lays? |
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Definition
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Term
What is the time between the end diastolic velocity of one pulse and peak systolic velocity of the next pulse? |
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Definition
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Term
The two principal abnormalities that require doppler evaluation of the abdominal veins are thrombosis and..? |
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Definition
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Term
Where is doppler sampling of the IVC performed most? |
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Definition
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Term
When the arm is exercised, what happens to the blood flow resistance in the arm? |
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Definition
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Term
Which veins are more important when evaluating upper extremity abnormalities? |
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Definition
Deep and superficial veins |
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Term
Of the upper extremity arterial abnormalities, which is most common? |
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Definition
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Term
Which upper extremity abnormality mimics thoracic outlet syndrome? |
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Definition
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Term
Where should the upper extremity arterial sonogram begin? |
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Definition
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