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USIDMS LE Arterial Doppler

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