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WorksheetsChapter 7: The Extracranial Duplex Ultrasound Examination
Total questions: 21
Worksheet time: 13mins
An Abnormal "blowing" or "swishing" sound heard when auscultating over an artery with a stethoscope.
Bulb
Bruit
The primary goal of noninvasive testing for extracranial cerebrovascular disease is to identify patients who are at risk for stroke due to atherosclerotic plaque.
False
True
Major indications for a duplex scan of the carotid and vertebral arteries include:
History of stroke
Transient ischemic attacks (TIA's)
Shortness of breath
Prior to cardiac, peripheral vascular or other type surgery
Only about 1/3 of bruits are related to high grade internal carotid stenosis.
False
True
A (TIA) is characterized by:
Focal weakness (paralysis)
Numbness (paresthesia)
Blurry vision
Difficulty speaking (Aphasia)
TIA symptoms occur on the side of the body opposite to the affected carotid artery and cerebral hemisphere.
True
False
A (TIA) typically last several minutes to a few hours, but no longer than 24 hours.
False
True
A RIND is similar to a TIA with symptoms lasting...
between 12- 36 hours
between 24 - 48 hours
between 24 - 72 hours
72 hours or more
Which transducer is most commonly used to perform a duplex evaluation of the extracranial cerebrovascular system?
8 - 5 MHz curvilinear transducer
7 - 4 MHz linear array
4 -1 MHz phased array
5 - 3 MHz phased array
One method to distinguish the ICA to the ECA is by tapping the STA to demonstrate oscillations on the doppler spectrum.
True
False
Tardus Parvus patter is characterized by damped, rounded waveform with decreased velocity and delayed acceleration.
False
True
Hemispheric symptoms include:
Aphasia
Dysphasia
Ataxia
Dysarthric speech
Contralateral Hemispheric symptoms include all of the following: Lateralized paresthesia, Hemiparesis, Ataxia, Hemiplegia.
True
False
Vertibrobasilar symptoms include drop attacks, syncope, vertigo, dizziness, diplopia, binocular blindness, blackouts and memory loss.
False
True
Patient positioning should include the head turned away from the side being scanned at a....
90 degree angle
45 degree angle
60 degree angle
The ICA lies posterior in the neck in 95% of patients.
True
False
Temporal tap is used to distinguish ...
The ECA and CCA
The CCA and ECA
The ICA and CCA
The ICA and ECA
Tardus Parvus is a sign of...
Distal stenosis
Proximal stenosis
A situation where one vascular bed draws blood away from another is called a ...
Stenosis
Bruit
Steal
Occlusion
ICA/CCA Ratio:
Highes ICA / Proximal CCA
Highest ICA / Highest CCA
Highest ICA / Distal ECA
Highest ICA / Distal CCA
Normal ICA/CCA PSV ratio:
> 2.0
2.0 - 4.0
< 2.0
> 4.0
