Chapter 27 Continuous Wave Doppler

Question 1

Name 4 sources of false positive studies

Answer 1

1) extrinsic compression
2) peripheral arterial disease
3) chronic obstructive pulmonary disease
4) improper Doppler angle or probe pressure

Question 2

________ ________ disease is decreased venous filling

Answer 2

Peripheral arterial

Question 3

________ ________ _______ disease is elevated central venous pressure

Answer 3

Chronic obstructive pulmonary

Question 4

Name 2 sources of false negative studies

Answer 4

1) collateral development
2) presence of bifed system

Question 5

What frequency probe should be used

Answer 5

5 MHz

Question 6

One should hold the probe at a _______ degree to skin surface

Answer 6

45-60

Question 7

Name the 4 venous flow patterns

Answer 7

1) spontaneous
2) phasic
3) augment with distal compression
4) augment with proximal release