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CCI RVS Cranial Exam Questions And Answers
Carotid bulb contains - ANSWER baroreceptors that assist in blood pressure control Kinking of ICA - ANSWER Most common anatomic variant associated with symptomaticcerebral ischemia
Plaque in carotid bifurcation - ANSWER Most common cause of stroke Innominate Artery Branches - ANSWER Right CCA and Right SubclavianCardiac emboli - ANSWER Second most common cause of stroke
MCA - ANSWER Most commonly occluded intracranial vessel with acute stroke Distal CCA IMT measurement - ANSWER Most commonly used to assess cardiovascularevents
Most common location of VA stenosis - ANSWER Origin Most common side for subclavian steal - ANSWER Left Extracranial ICA - ANSWER More common site for dissection than intracranial ICA FMD - ANSWER Most common in mid-distal ICA Atherosclerosis - ANSWER Most common in proximal ICA Eagle Syndrome most common location - ANSWER Bilateral
Nintinol - ANSWER Most common stent material Carotid body contains - ANSWER chemoreceptors CCA bifurcates at - ANSWER upper border of thyroid cartilage ECA branches - ANSWER provide collateral pathways for intracranial stenosis ECA Nl PSV - ANSWER <150 cm/s VA's supply - ANSWER 10 - 25% of cerebrum VA Nl PSV - ANSWER < 50 cm/s Basilar Artery bifurcates-ANSWER at Circle of Willis to form cerebral arteries ACA supplies-ANSWER Cava septum pellucidum Corpus callosum Frontal & parietal lobes MCA supplies-ANSWER Frontal ParietalTemporal
PCA supplies-ANSWER Occipital Temporal
Amaurosis Fugax Broca Aphasia HemiparesisHomonymous Hemianopia ParalysisParesthesia
MCA Disease - ANSWER Behavioral changesDysphasia Hemiparesis Wernicke Aphasia AKA receptive aphasia ACA Disease - ANSWER Facial Droop/Assymetry IncontinenceLeg hemiparesis Loss of coordination PCA Disease - ANSWER Coma Dyslexia Vertebral Disease - ANSWER Ataxia Bilateral Double vision Bilateral homonymous hemianopiaBilateral paresthesia Dysphagiadrop attack/syncope/vertigo
CCA & ICA Nl - ANSWER PSV <125 cm/s, EDV < 40 cm/s ECA Nl - ANSWER PSV < 150 cm/s TCD probe - ANSWER 2 MHz0 degree angle assumed
TAMV - ANSWER Time Average Maximum Velocity TCCD - ANSWER PSV measured instead of TAMV ICA splits into - ANSWER ACA & MCA MCA segments - ANSWER M1M M ACA segments - ANSWER A A PCA segments - ANSWER P P MCA Transtemporal - ANSWER 30 - 60 mm Toward P1 Transtemporal - ANSWER 60 - 70 mm
TCD for Vasospasm - ANSWER Complication in subarachnoid hemorrhage, usually slowbleed
PI > 1.2 - ANSWER Vasospasm MCA > 200 cm/s & TAMV > 120cm/s - ANSWER Severe significant reduction inintracerebral flow
Absence of 1 or more communicating arteries - ANSWER Most common Circle of Willisanomaly
TCD most common indication - ANSWER Vasospasm/Vasoconstriction caused bysubarachnoid hemmorhage
TCD evaluation - ANSWER TAMV most common Intracranial stenosis most common in - ANSWER MCA, siphon, terminal ICA Anterior communicating artery - ANSWER most common collateral pathway for ICAdisease
ACoA most common location for - ANSWER Intracranial aneurysm PCoA second most common location for - ANSWER Intracranial aneurysm Intracranial Arteriovenous Malformation - ANSWER Most common in men Pre-Stenotic Zone - ANSWER Dampened flow velocity with loss of diastolic flowIncreased resistance and RI
Short Acceleration Time (AT) Stenotic Zone - ANSWER Decreased PressureIncreased Diastolic flow High PSVSpectral broadening
Post Stenotic Zone - ANSWER Increased diastolic flowLow resistance Turbulence Distal to Critical ICA Stenonsis - ANSWER Diastolic and systolic flow is low-velocity withblunted waveform Slow ATTardus-parvus
Proximal CCA stenosis - ANSWER Holodiastolic flowreduced velocity Slow upstroke Distal CCA stenosis - ANSWER Minimal diastolic flow Quick upstrokeReduced velocity
Tortuousity or Compensatory flow d/t obstruction in CCA - ANSWER Single CCA withelevated velocity
Most accurate Doppler predictor of ICA stenosis - ANSWER EDV
Supra orbital artery - ANSWER direct branch from the ophthalmic artery and joins thesuperficial temporal artery, which is a branch of the external carotid artery
15 MHz - ANSWER transducer for intraoperative carotid US State of px CCA best evaluated by - ANSWER Systolic upstroke Short focal plaque - ANSWER May overestimate stenosis
