Doppler Segmental Pressures - Upper Extremities

Question 1

≥ 15 - 20mmHg difference in brachial pressure suggest the lower side has ___

Answer 1

subclavian artery obstruction > 50%

Question 2

decreases in BP between the upper arm and forearm should not exceed

Answer 2

≥ 15 - 20mmHg

Question 3

decreases in BP between the upper arm and forearm that exceed ≥ 15 - 20mmHg suggest ___

Answer 3

brachial artery obstruction distal to the upper cuff and

obstruction in both radial and ulnar arteries OR
obstruction in one forearm artery that has a decreased pressure

Question 4

determines hand viability if the radial artery is to be removed

Answer 4

Allen Test

Question 5

Allen Test

normal -
abnormal -

Answer 5

normal - skin color returns to normal
abnormal - skin color remains pallor (radial artery dependent)

Question 6

Modified Allen Test

___ is affixed to 2-3 fingers to obtain waveforms both before and during compression of the radial artery

Answer 6

photoplethysmographic (PPG) sensors

Question 7

Modified Allen Test

abnormal result -

Answer 7

PPG waveform decreases during the radial artery compression