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What is the TCD temporal depth of the MCA and the flow direction
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What is the TCD temporal depth of the Terminal ICA as well as the direction of flow?
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RVT Exam ARDMS
ARDMS, vascular, RVT, sonography, ultrasound
| Question | Answer |
|---|---|
| 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
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