Online CME Courses

Arterial Duplex Imaging Lower Extremity Quiz

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1. A patient complains of calf pain when walking that is relieved by sitting for a minute. This symptom of peripheral arterial disease may best be described as:

Claudication

Rest pain

Ischemic ulcers

Gangrene

Not a symptom of arterial disease

2. The most important diagnostic criteria during duplex imaging of the lower extremity arterial system is:

Visualized pulsatility of the arterial wall

The color Doppler display

An echo free arterial lumen

Decreased color filling

The spectral Doppler waveform


3. The characteristics of a normal arterial Doppler spectral waveform obtained during duplex imaging of the lower extremity arterial system includes all of the following EXCEPT:

Triphasic

Sharp upslope

Reverse flow component

Low velocity forward flow in late diastole

Dicrotic notch


4. To obtain high quality arterial Doppler spectral waveform during arterial duplex imaging of the lower extremities, it is best to use a ___________ imaging plane.

Transverse

Longitudinal

Oblique

Inverted

Reversed


5. During arterial duplex imaging, high quality Doppler spectral waveforms are obtained using a ________ angle.

Zero

15 degree

60 degree

75 degree

Direct


6. What imaging characteristic indicates a significant (>50% diameter reduction) arterial narrowing during lower extremity arterial imaging?

Spectral broadening

An increase of peak systolic velocity of greater than 20% compared to the proximal adjacent area

An increase of peak systolic velocity of greater than 100% compared to the proximal adjacent area

Loss of blood flow reversal in early diastole

Loss of blood flow reversal in late diastole


7. Which of the following is a benefit of using arterial duplex imaging to evaluate the arterial system of the lower extremity?

Ease in the evaluation of the popliteal trifurcation

Is not affected by arterial calcification

Ease in the evaluation of the iliac arterial system

Distinguishes stenosis versus occlusion

Provides information regarding overall limb hemodynamics


8. Which of the following best describes ultrasound compression therapy of pseudoaneurysms?

Is most successful when the pseudoaneurysm is large

Is most successful in patients who are anticoagulated

Takes minimal upper body strength

Usually requires 30 to 60 minutes to be successful


9. To accurately measure the size (length and width) of an aneurysm the artery should be evaluated in:

Transverse imaging plane only

Longitudinal imaging plane only

Both longitudinal and transverse imaging planes

Imaging plane does not affect the accuracy of the measurement


10. Surveillance programs of lower extremity bypass grafts will benefit by beginning

Within days after the operation

At the 1 month postoperative visit

At the 6 month postoperative visit

At the 1 year postoperative visit

Surveillance programs are not used for evaluating bypass grafts