Carotid Imaging Test 2 Flashcards
What are the warning signs of a stroke?
Aphasia Dysphasia Dysphagia Dysarthria Tingling and numbness Vertigo Transient blindness Pg33
If there is a difference in blood pressures from arm to arm, what area is diseased from that indication?
There is a stenosis. (google)
Subclavian and/or vertebral disease
What type of flow does ECA have?
High resistive
pg. 47 4th ed.
What type of flow does ICA have?
Low resistive
pg. 47 4th ed.
What are the spectral analysis ultrasound findings of an ICA occlusion?
- No Doppler flow
- ECA and CCA will have similar waveforms
pg. 60 4th ed.
What is the difference between CVA and TIA?
CVA is a complete brain stroke
TIA has the same symptoms but they only last for 24 hours
pg. 33 4th ed.
What blood vessels are symmetrical?
vertebral arteries
per Beth 10/4/16
Where in the vessel should the sample volume and angle be located?
parallel in middle of vessel
What are the measurements for the degree of stenosis in the ICA?
< 50% 50-69% stenosis =or > 70% stenosis to near occlusion total occlusion pg 72 4th edt.
How many strokes occur each year?
795,000. (google)
What does the innominate artery divide into?
RT CCA
RT Subclavian A
pg. 35 4th ed.
What should the sample volume (gate) be?
2 mm
per Beth 10/4/16
If there is an abnormal Doppler waveform in the ICA, where would that suggest disease at?
A high resistance ICA waveform may also occur with stenosis in the distal ICA. However, condition usually coexists with extensive disease in the proximal ICA. pg 65 4th edt
What might happen to the velocities to the ipsilateral side if the contralateral ICA is occluded?
If one side is occluded the other side (the contralateral) the velocity will increase. pg 80 4th edt.
When determining the ICA/CCA ratios, what section of the CCA is used for the ratio?
mid/dist
per Beth - 10/4/16
What characteristics would be demonstrated with a subclavian steal?
retrograde flow in the vertebral
per Beth - 10/4/16
What would a less than 125 cm/s PSV suggest?
Normal (no stenosis)
pg. 73
What is transient partial or complete loss of vision called?
Amaurosis fugax
Binocular blindness
pg. 33 4th ed.
The carotid body assists in regulating all except ____.
It assists in heart rate, blood pressure, and respiration
Hagen-Ansert volume 2 pg. 875
What is the most common visualized branch of the ECA?
Superior thyroid artery
pg. 36 4th ed.
What is the noise created by tissue vibration?
Bruit
Beth - 9/27/16
While color duplex imaging there may be an area where the color doesn’t fill in the vessel, what might this be from? (It’s not plaque)
boundary layer separation
per Beth 10/4/16
The vertebral arteries join to form the _____.
basilar artery
pg. 35 4th ed.
What is the inability to speak or express oneself?
Aphasia
pg. 33 4th ed.
