Doppler Waveform Analysis in the Upper and Lower Extremities

Question 1

3 types of Doppler velocimetry

Answer 1

auditory
analog
spectral analysis

Question 2

obtain (5) UE Doppler waveforms from

Answer 2

subclavian artery
axillary artery
brachial artery
radial artery
ulnar artery

Question 3

obtain (7) LE Doppler waveforms from

Answer 3

common femoral artery (CFA)
superficial femoral artery (SFA)
popliteal artery (Pop A)
anterior tibial artery (ATA)
posterior tibial artery (PTA)
dorsalis pedis (DPA)
peroneal artery (Per A)

Question 4

normal Doppler waveforms are ___

Answer 4

multiphasic

Question 5

abnormal postexercise waveform characteristics (4)

Answer 5

become more monophasic
slow upstroke with more rounded peak
slow downstroke
no reverse component

Question 6

Troubleshooting

Problem: recorder stylus is not recording waveforms

Answer 6

check proper test and probe are selected

Question 7

Troubleshooting

Problem: bands of noise are displayed on the tracing

Answer 7

increase filter and/or reduce gain

Question 8

Troubleshooting

Problem: no auditory signal

Answer 8

adjust volume control and/or headset connection

Question 9

Troubleshooting

Problem: there is an auditory signal but no tracing

Answer 9

check recorder is on and not in pause or freeze

Question 10

Pulsatility Index (PI) =

Answer 10

PI = (PSV - EDV) / mean frequency

Question 11

pulsatility index (PI) helps differentiate ___

Answer 11

inflow disease from outflow disease

Question 12

inverse dampening factor =

Answer 12

inverse dampening factor = distal PI / proximal PI