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RVT Exam ARDMS

ARDMS, vascular, RVT, sonography, ultrasound

QuestionAnswer
What is the TCD temporal depth of the MCA and the flow direction 30-60 mm - antegrade
What is the TCD temporal depth of the Terminal ICA as well as the direction of flow? 55-65 mm -bi-direct
What is the TCD temporal depth of the ACA as well as the direction of flow? 60-80 mm -retrograde
What is the TCD temporal depth of the PCA as well as the direction of flow? 60-70 mm -antegrade
Name the possible collateral pathways of cerebrovascular systemn and describe them cross-over: antegrade flow in ACA ECA-ICA: retro flow in Opthalmic A Posterior-Antrior: increased PCA flow
Another name for cross-over pathway? hemisphere-hemisphere
What is the 1st branch off the ICA? Opthalmic Artery
Which branch of the terminal ICA is the largest MCA
What are common stroke symptoms? Numbness/weakness especially unilateral face, arm , leg confusion double vision, temp. loss of trouble walking/coordination/dizziness severe HA
What is amaurosis fugax? temporary loss of vision in 1 eye, lack of blood flow to retina a sign of impending stroke
Describe drop attack. sudden fall w/out loss of consciousness
Symptoms associated with ICA lesion uni-paresis uni-paresthesia aphasia amaurosis fugax sensory changes contralateral weakness
Symptoms associated with MCA lesion aphasia/dysphasia contralateral severe facial/arm hemiparesis/plegia behavorial changes (rt) agitated delirium (lower)
Symptoms associated with ACA lesion Severe leg hemiparesis/plegia incontinence loss of coordination
Symptoms associated with vertebrobasilar lesion numbness around lips/mouth veritgo ataxia bil blurring/double vision drop attack bil. paresthesia/anesthesia amnesia
Symptoms associated with PCA lesion dyslexia coma paralysis
What is the sample volume size typically used in diagnostic US? 1-1.5mm
What forms the confluence of the portal vein? The splenic vein and the SMV
Location of TIPS right portal and right hepatic
Describe resistance of pre-prandial mesenteric vessels. high resistance w/reverse componet
Describe resistance of post-prandial mesenteric vessels. low resistance w/higher diastole
Describe Homogeneous plaque predominately echogenic (calcification may present) uniformly echogenic
Describe Heterogeneous plaque uniformly sonolucent predominately sonolucent (calcification may be present)
Flow resistance of the ICA LOW
Flow resistance of the ECA high
What is the best way to identify which vessel is the ECA from the ICA? temporal tap
How many branches does the ECA have? 8
Name the branches of the ECA. 1. Superior thyroid A 2. Ascending pharagenyal 3. linguinal 4. facial 5. occipital 6. posterior auricular Terminal B 7. maxillary superficial temporal
Name the 1st branch off the ECA. Superior thyroid artery
Renal artery ratio that indicates stenosis? >3.5
What is the most common issue w/in 24 months of an endarectomy? Significant stenosis
The cephalic course? (medial, lateral) lateral
What vessel does the brachial connect to? axillary
WHat does the cephalic v connect to? axillary and becomes subclavian
Created by: brandie727