Study Guide Test 1 Flashcards
What would be some warning signs of stroke
Temporary blindness in one eye (quizlet)
Adifferenxe in 20 ml mecury pressure between arms suggest disease in what vessel
Subclavin artery
Doppler signal from the ECA is what kind of flow?
High resistance
What kind of flow patteren is the ICA
Low resistance
Which is not an U/S finding of an ICA occlusion
Reduced diastolic blood flow patteren (quizlet)
TIA deficit
Resolves within in 24hrs
Vetebra A. , bilateral are typically the same w/o disease, so they are?
Asymmetrical
When you put blood doppler in blood sample,it should be parallel to what?
To the vessel wall
The degree of stenosis of the originOf the ICA is determined by?
Peak systolic and end diastolic
Most valuable tool to determine stenosis
Doppler
Innominate A. Divides into what two vessels?
Rt subclavain Rt CCA
Sample volume should be kept where inside the vessel during the carotid exam?
Small
Abnormal spectral waveform from the ICA suggests what?
Prox or distal disease or occlusion
Contralateral ICA occlusion may cause ipsilateral to what
Increased
Determine ICA, CCA ratio, CCA should be ontained from what portion of the CCA
Distal segment (AFL)
What is a characteristic of a subclavian steel
Reversal of flow from the vertebrale arteries
Systolic velocity recorded from the orgin of ICA Is less then 125cm/s what does that tell us?
Stenosis less then 50% diameter Reductions
Transient/partial Complete loss of vision is what term?
Amaurosis fagux
Carotid body assits in regulating all of the following except?
balance (AFL)
Most common visualized branch of the ECA
Superior thyroid
Normal flow disturbance (when color is different color) is what?
Boundary layer seperation
Union of Vertebral A. Join to form what vessel
Basilar A.
Inability to speak or express oneself Is what (left hemisphere for strokes)?
Aphasia
North America symptomatic carotid Endarterectomy Trial abbervation
NASCET
CVA several casues, know them
Family history, smoking,old age,diabeties, Hypertension, high chelestrol (risk factors)
Embolism 30% , thrombosis 60%, hemorrhage 10-15 % (causes) AFL
Name disorder when symptoms reslove within 24hrs
TIA
Has symptoms resolve,but not within 24hrs
RIND
Vertebral basilar sypmtoms include what?
Drop attack, Syncope, Black out, Memory loss,vertigo,dizziness, Diplopia
If you see sonolucent area within plaque, what could it represent
Hemorrhagic plaque
