Chapter 11 Duplex/color Flow Imaging Upper Extremity

Question 1

What are the 3 reasons for doing a duplex of the UE

Answer 1

1) To localize a stenosis or occlusion
2) determine presence/ absence of aneurysm
3) detect AVF or other unusual abnormality

Question 2

Arm is at a ______ degree angle from the body and is ________ rotated

Answer 2

45
External

Question 3

What type of transducer should be used

Answer 3

7 or 5 MHz linear array

Question 4

It is uncommon for arteries in the upper extremities to become ______

Answer 4

Stenotic

Question 5

Dialysis access assessment sites include what 3 things

Answer 5

1) inflow artery
2) anastomosis
3) outflow vein

Question 6

Doppler signal qualities of the native arteries should be

Answer 6

Triphasic

Question 7

If a _______ diameter reduction is present observe for characteristics of the stenosis profile

Answer 7

> 50%

Question 8

Is there is dilation of the vessel from degeneration and or weakening of the wall one should be considered for

A) stenosis
B) occlusion
C) aneurysm

Answer 8

C) aneurysm

Question 9

Subclavian aneurysms often are associated with _________ to the digits

Answer 9

Embolization

Question 10

Low PSVs obtained in access grafts could indicate arterial _____ problems

Answer 10

Inflow

Question 11

What 2 things are most common sites for stenosis

Answer 11

1) venous anastomosis
2) outflow vein

Question 12

Large blood volumes shunted from artery to lower resistant venous circulation can increase venous return resulting in

Answer 12

Congestive heart failure

Question 13

__________ ________ is when the distal arterial blood flow is reversed into the lower resistant venous circulation and cause cause pain on exertion

Answer 13

Steal syndrome