Chapter 9 Digit Plethysmography and Pressures Flashcards
Why do we do digit plethysmography and pressures
To help detect the presence of arterial disease
With volume plethysmography cuffs applied too _______ can obliterate or diminish the pulse wave forms
Tightly
With photo plethysmography improper _______ with skin will cause poor results
Contact
After the fingers with cold stress is performed hands are immersed in ice cold water for how many minutes
3 minutes
Following cold stress, waveforms and pressures are obtained how long after
Immediately after and 5 minutes after
A sharp upstroke during peak systole is
A) normal
B) abnormal
A) normal
Prolonged down stroke with notch approx half way down is
A) normal
B) abnormal
A) normal
Slow upslope to rounded peak is
A) normal
B) abnormal
B) abnormal
Down slope that bows away from baseline is
A) abnormal obstructive
B) abnormal peaked
A) abnormal obstructive
Upslope is slower than normal and sharp notch is present is
A) abnormal obstructive
B) abnormal peaked
B) abnormal peaked
Reflective wave located high on the downslope and has characteristics of both normal and the obstructive waveforms is
A) abnormal obstructive
B) abnormal peaked
B) abnormal peaked
_______ ________ obstructive disease has abnormal Doppler arterial signals systolic pressures and PPG tracings
Organic fixed
_________ ________ obstructive disease has normal Doppler arterial signals, systolic pressures and or PPG tracings but abnormal findings after cold stimulation
Functional intermittent
Summer and Strandness described the peaked pulse characteristically seen in the digit pulse contours of patients with ________ phenomena
Raynauds
Upper extremity digits of finger and brachial indices should be
0.8-0.9
