1. A warning sign of stroke is:

severe neck pain
loss of smell
temporary blindness in one eye
unilateral leg pain

2. A difference of greater than 20 mm. Hg pressure between arms suggest disease of the:

common carotid artery
internal carotid artery
vertebral artery
subclavian artery

3. An ultrasound finding of the Doppler signal from an external carotid artery is:

low resistance
high resistance
triphasic
tardus parvis

4. An ultrasound characteristic of the internal carotid artery includes:

originates anterior and medial at the bifurcation
low resistance Doppler signal
cervical branches
smaller lumen

5. Which of the following is NOT an ultrasound finding of an ICA occlusion:

echogenic material filling the lumen
lack of arterial pulsations
loss of diastolic flow in the CCA
reduced diastolic flow pattern

6. Which of the following statements describes a transient ischemic attack (TIA):

permanent loss of vision bilaterally
residual neurological deficit
duration less than 24 hours
loss of consciousness

7. Which of the following should be used to classify a >80% diameter reduction of the origin of the internal carotid artery:

peak systolic velocity < 125 cm/sec.
peak systolic velocity > 125 cm/sec.
end diastolic velocity < 140 cm./sec.
end diastolic velocity > 140 cm/sec.

8. Normal vertebral arteries:

are asymmetrical
are branches of the axillary artery
demonstrate a high resistance Doppler signal
demonstrate an alternating blood flow pattern

9. Placement of the Doppler sample volume should be parallel to the:

color jet
plaque surface
vessel walls
skin surface

10. The degree of stenosis at the origin of the internal carotid artery is determined by:

echo characteristics of the plaque
the presence of acoustical shadowing
peak systolic and end diastolic velocities
ICA/ECA peak systolic velocity ratio

11. Approximately ___________ strokes occur each year in the United States.

10,000
100,000
700,000
1,000,000

12. The innominate artery divides into the __________ and _________ arteries:

right common carotid, right subclavian
left common carotid, left subclavian
right subclavian, right vertebral
left subclavian, left vertebral

13. The Doppler sample volume should be kept ______ during a carotid duplex imaging examination.

near the deep wall
near the superficial wall
large
small

14. An abnormal spectral Doppler waveform shape from the ICA suggests:

contralateral disease
arterial branches
proximal or distal disease/occlusion
venous thrombosis

15. A contralateral ICA occlusion may cause the ipsilateral ICA velocities to be:

the same
reversed
increased
decreased

16. Which of the following ICA/CCA ratios determines a greater than 70% diameter reduction of the ICA:

1.0
4.0
7.0
10.0

17. When determining the ICA/CCA ratio, the CCA velocity should be obtained from:

a transverse view
during diastole
the proximal straight segment
the distal segment that includes the bulb

18. A characteristic of a subclavian steal is:

reversal of blood flow in the vertebral artery
equal blood pressure bilaterally
loss of diastolic flow
increased pulsatility

19. A systolic velocity recorded from the origin of the ICA that is less then 125 cm/sec. suggests:

no plaque present
a stenosis less then 50% diameter reduction
a stenosis greater then 50% diameter reduction
a stenosis greater then 80% diameter reduction

20. Intraoperative carotid duplex imaging identifies:

contralateral ICA disease
abnormal blood flow
increased blood pressure
the need for a carotid shunt