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DVT398-AH1

USIDMS Extracranial Carotid

QuestionAnswer
What is Eddy flow? Color swirl of red and blue
What are the two types of stroke? Which is more common? Ischemic- more common and hemorrhagic
What are the four stages of plaque formation? ESIP Endothelial injury, Sub-endothelial lipid deposit, Inflammation response (smooth muscle proliferation), and Plaque formation
What are the five terms that can describe plaque? Extent of plaque, severity, echogenicity, complicated plaque, smooth plaque
What are examples of low resistant flow vessels? ICA, renal artery, intracranial vessels
What are examples of high resistant vessels? ECA and extremity vessels
Sonographically, how can the ECA and ICA be distinguished? ICA is low resistant waveform, usually larger in diameter, only contains intracranial branches ECA is high resistant waveform, smaller in diameter, contains extracranial branches
What does tardus parvus describe? low velocity flow with delayed acceleration
What is the first branch off of the ECA? Superior thyroid artery
How much of a difference in mmHG is a red flag for subclavian steal? 20 mmHg
What are the three forms of aneurysms? Fusiform, saccular, and dissecting
What causes pseudoaneurysms? Vessel trauma
What is a small ovular structure that can develop in the carotid bifurcation? Carotid Body Tumor
What is the overgrowth of smooth muscle and fibrous tissue in the arterial wall? Fibromuscualr dysplasia
What is the intimal thickening with plaque or FMD? Neointimal hyperplasia
What layers of a vessel are affected with arterial dissection? Initma and media
Created by: anhake