Vascular Mod 3/4

Question 1

Raynaud’s terminology

Answer 1

Raynaud’s syndrome - both disease + phenomenon
Raynaud’s disease = primary vasospasm
Raynaud’s phenomenon = secondary with underlying condition

Question 2

Normal digital brachial index DBI

Answer 2

> 0.8

Question 3

Pressure gradients with finger that suggest UE disease

Answer 3

Brachial finger > 35 mmHg
Wrist finger > 30 mmHg
Finger-finger > 15 mmHg

Question 4

Cold sensitivity test

Answer 4

Dip hand in ice water for 3 min

Immediate post-immersion if abnormal then test again at 5 and 10 min

Question 5

Cutoff for digital systolic blood pressure

Answer 5

Resting > 60 mmHg

> 40% SBP drop with radial compression

Question 6

Normal ulnar artery evaluation

Answer 6

PSV 40-60 cm/s

> 20% PSV increase with radial compression

Question 7

Duplex diagnosis for access-related steal syndrome

Answer 7

Pressure, index and doppler waveform amplitude increase by more than two fold

Question 8

Presence of peaked pulse in digit is indicative for

Answer 8

Raynaud’s disease (vasospastic)

Question 9

Definition of critical limb ischemia

Answer 9

1) ankle pressure < 50-70
2) toe pressure < 30-50
3) reduce TcPO2 < 30-50

Question 10

High thigh pressure compared to brachial pressure

Answer 10

Should be > 30 mmHg TBI > 1.3

Question 11

Gradient between two consecutive cuff that suggest disease

Answer 11

15-20 mmHg = mild

> 30 mmHg = severe

Question 12

Transfer function index

Answer 12

Compare relative pulsatility of input waveform to output waveform

TFI > 1 = normal
TFI < 0.9 = disease in arterial segment

Question 13

Laser doppler purpose

Answer 13

measure skin perfusion pressure

Question 14

Normal and abnormal laser doppler numbers

Answer 14

SSP > 50 mmHg = normal
40-50 = mild
30-40 = moderate
< 30 = severe

Question 15

Exercise pressure drop cut off for disease

Answer 15

> 20 mmHg

change in waveform