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DVT398-HD1
USIDMS Extracranial Carotid
Question | Answer |
---|---|
Between the ICA and ECA, which is larger, more posterior, and has a low resistance? | ICA |
Where in relation to a severe stenosis does a Tardus parvus waveform appear? | distal |
Which layer of the arterial walls consists of loose connective tissue? | tunica adventitia |
Which layer of the arterial walls does fibromusclar dysplasia have affects on? | tunica media |
What difference in mmHg between both the right and left arms is an indication of sublavian steel? Does the affected arm have a higher or lower blood pressure? | 20 mmHg difference, affected arm has lower blood pressure |
What is it known as when a false lumen is created by the separation of layers in the arterial wall?Which two layers does it occur between most often? | arterial dissection, in most cases the separation is between the intima and media layers |
What is a special feature that veins have to prevent the retrograde flow of blood? | valves |
How is the resistance of blood related to the radius of the vessel? | proportional, to the power of four |
Is flow with a Reynolds number greater than 2,000 considered laminar or turbulent? | turbulent |
Which category of blood lfow is associated with the absence of respiration? It doesn't have any acceleration or deceleration? | steady flow |