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DVT402-AW2

USIDMS LE Arterial Doppler

QuestionAnswer
What is the most common symptom of peripheral arterial disease? Claudication
What are the most common sites for atherosclerotic disease? Bifurcations, trifurcations, and vessel origins (eg: SFA at adductor canal, infra-renal aorto-iliac system)
In the lower extremities, a ____% stenosis is considered hemodynamically significant 50%
Describe the "stenosis profile" Dampened velocities - proximal to stenosis Increased velocities - at stenosis Spectral broadening – distal to stenosis Post-stenotic turbulence
Describe the difference between the 3-cuff and 4-cuff methods The 3-cuff method is more accurate. The 4 cuff method – will artificially elevate thigh pressures, but will localize disease more than 1 cuff would
How should one select an appropriate cuff size? Bladder of cuff should be 20% wider than limb diameter
Cuffs should be inflated ____-____ mmHg above the last audible Doppler signal 20-30 mmHg
What are you looking for when interpreting a segmental pressure study? Look for a 30 mmHg or greater pressure drop side-to-side or in adjacent segments
What ABI would suggest multi-level disease? < 0.5
With an abnormal PVR, where is the disease? An abnormal PVR will always mean that there is disease proximal to the waveform
Created by: Stephtier