Digit Plethysmography and Pressures Flashcards
capabilities
4
detection of arterial disease
end point detector
more reliable in case of atherosclerotic cond
differ fixed arterial disease from vasospasm
limitations
5
ambient temp sensitive
smoking causes vasoconstriction
improper positioning of devise
bandages
pt tremor
pt position
toe - supine
finger- pt sitting erect w/ arms resting on pillow in pt lap
toe cuff size
2.5-3cm
what is the end point detector in PPG
photocell
what is the paper speed for PPG
5 mm/sec
cuff is inflated to _____mmHg above highest brachial pressure
20-30 mmHg
what two different kinds of PPG tests are done with fingers
with and without cold stress
cuff size for fingers
2 - 2.5 cm
procedure for cold stress PPG test
toes or fingers
after resting study
immersion in cold water 3 min
waveforms + pressures immediately after min
waveforms + pressures 5min after
doc= skin color, and measurements
Organic or ______ disease is indicated by abnormal wf with Doppler, pressures, and PPG at _____ .
fixed
rest
functional or ________ disease has normal Doppler, pressures, PPG but will be abnormal after _________
intermittent
cold stress
Peaked pulse is unique to which disease process
describe the waveform
Raynaud’s phenomena
peak before high systolic peak
abnormal cold sensitivity is r/i if the amp fails to return to baseline in _____
> 5 minutes
FBI parameters
finger/ brachial index
.8-.9
