Plethysmography

Question 1

plethysmography in combination with Doppler segmental pressures help to (2)

Answer 1

differentiate true arterial claudication from nonvascular sources
localize the level of obstruction

Question 2

volume plethysmography is also known as ____

Answer 2

pneumo/true plethysmography

Question 3

terms used to describe volume plethysmographic waveforms (3)

Answer 3

pulse volume recording (PVR™)
volume pulse recording (VPR)
pulse contour recording (PCR)

Question 4

volume plethysmography

at least ___ pulse cycles are recorded at each level

Answer 4

at least 3 pulse cycles

Question 5

photoplethysmography (PPG) consists of ___

Answer 5

transducer
amplifier
strip-chart recorder

Question 6

PPG detects ___ and records ___

Answer 6

detects blood flow
records pulsations

Question 7

PPG is most often used to evaluate ___

Answer 7

digits and penis

Question 8

PPG cannot quantify flow - provides ___ information

Answer 8

PPG provides qualitative information

Question 9

Plethysmographic Waveform

Answer 9

Normal

sharp systolic peak with prominent dicrotic wave

Question 10

Plethysmographic Waveform

Answer 10

Mildly Abnormal

sharp peak
absent dicrotic wave
downslope bowed away from baseline

Question 11

Plethysmographic Waveform

Answer 11

Moderately Abnormal

flattened systolic peak
upslope and downslope decreased and nearly equal

Question 12

Plethysmographic Waveform

Answer 12

Severely Abnormal

absent of low-amplitude wave

Question 13

Troubleshooting

Problem: recorder stylus cannot be centered

Answer 13

confirm machine is in the right mode

Question 14

arterial studies = ___ mode
venous studies = ___ mode

Answer 14

arterial - AC mode
venous - DC mode

Question 15

Troubleshooting

Problem: an acceptable waveform cannot be recorded

Answer 15

reattach PPG