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DVT398-EH1

USIDMS Extracranial Carotid

QuestionAnswer
What is Bernoulli's Principle? The Conservation of Energy Law; An increase in velocity means a decrease in pressure
What is a low resistance waveform? A continuous flow of blood to essential organs. The waveforms are somewhat rounded.
What is a high resistance waveform? A pulsatile flow of blood that may demonstrate a brief period of reversed flow. The waveforms are spiky and deliver blood to nonessential organs.
What is a tardus parvus waveform? "Late acceleration" these occur just distal to a stenosis. The waveform will have a more rounded appearance.
What aortic branch does the right CCA originate from? The brachiocephalic or innominate artery
What does ipsilateral mean? The same side as __________.
What does contralateral mean? The opposite side of ___________.
What does RIND stand for? Reversible Ischemic Neurological Deficient
How can someone identify the ICA from the ECA? The ICA is usually larger and more lateral then the ECA. A temporal tap can be used to confirm the ECA. The ECA will also have viewable branches.
What is a subclavian steal? The brain is feeding the extremity due to a subclavian occlusion. This results in retrograde vertebral flow and a 20mmHg difference in arm blood pressures.
Created by: emhart2
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