Quiz 6

Question 1

A femoropopliteal bypass graft connects which two arteries?

Answer 1

femoral artery and popliteal artery

Question 2

Which of the following is true regarding a typical acute embolic arterial occlusion?

1. Occlusion was caused from a thrombus formation at an aneurysm
2. Occlusion was caused from thrombus traveling from a proximal level to plug a stenotic segment
3. Occlusion was caused and collateral vessels have formed to redirect the blood flow
4. Symptoms are not immediate

Answer 2

2. Occlusion was caused from thrombus traveling from a proximal level to plug a stenotic segment

Question 3

Describe the PW Doppler waveform appearance within the neck of a pseudoaneurysm.

Answer 3

to and fro waveform

Question 4

True or False:

When an arteriovenous fistula is present, the blood flow within the vein proximal to the fistula will be pulsatile?

Answer 4

True

Question 5

What is the most common type of graft anastomosis in the lower extremity arteries?

1. proximal to distal
2. end-to-distal
3. side-to-side
4. end-to-side

Answer 5

4. end-to-side

Question 6

True or False:

High spectral velocities shortly after a graft placement always indicates an abnormality or problem with the graft.

Answer 6

Flase

Question 7

!!! flag question

When there is an arteriovenous fistula present, which of the following statements is true regarding the blood flow within the artery/vein involved?

1. Loss of the triphasic waveform within the artery proximal to the fistula
2. Phasic and normal venous flow near the fistula
3. Loss of the triphasic waveform within the artery distal to the fistula
4. Pulsatile venous flow throughout the entire vessel

Answer 7

My Ans: 3

Corerct Ans: 1. Loss of the triphasic waveform within the artery proximal to the fistula

Question 8

True or False:

Blood flow is detected within hematomas with color Doppler.

Answer 8

False

Question 9

Define what an arteriovenous (AV) fistula is?

Answer 9

My Answer:
abnormal communication between artery and vein

Question 10

Looking at this image of a graft, which letter represents the native artery?

Answer 10

A

Question 11

You are asked to grade an arterial stenosis using the criteria by J. Ellison at Cedars-Sinai:

You obtain a PSV of 100cm/s in a normal area of the artery just proximal to the stenosis and a PSV of 425cm/s within the area of narrowing/stenosis. What percentage of stenosis would this vessel be classified as?

1. > 25%
2. > 90%
3. > 50%
4. > 75%

Answer 11

4. > 75%

Question 12

True or False:

An axillofemoral bypass graft is commonly used in combination with a femorofemoral bypass graft.

Answer 12

True

Question 13

This PW waveform was most likely obtained at which segment of a stenotic artery?

1. Pre stenotic
2. post stenotic
3. at the level of the stenosis

Answer 13

2. post stenotic

Question 14

Why are distal anastomoses of grafts more susceptible to obstruction than the proximal anastomoses?

1. Due to the lower velocities distally
2. Due to the fewer number of valves distally
3. Due to the higher velocities distally
4. Due to the direction of the flow distally

Answer 14

1. Due to the lower velocities distally

Question 15

Does arterial stenosis grading provide quantitative OR qualitative information?

Answer 15

quantative

Question 16

When evaluating a pseudoaneurysm, the blood flow will be antegrade within the neck of the aneurysm during which cardiac phase?

1. pre diastole
2. diastole
3. systole
4. Flow is always antegrade within the neck of the aneurysm

Answer 16

3. systole

Question 17

Which type of bypass graft has the best patency rate?

1. Gore-Tex
2. Polyurethane
3. Native great saphenous vein
4. Dacron

Answer 17

3. Native great saphenous vein

Question 18

Which of the following is NOT a type of lower extremity arterial bypass graft?

1. Femorofemoral
2. Aortoiliac
3. Axillofemoral
4. Poplopopliteal

Answer 18

4. Poplopopliteal

Question 19

!!! flag question

If a patient is experiencing mid/distal thigh pain, what artery should be evaluated for disease?

Answer 19

My Ans: B

Correct Ans: A

Question 20

Hematomas and pseudoaneurysms are a common result of which type of invasive procedure?

Answer 20

cardiac cath

Question 21

Which graft configuration leaves the patient’s greater saphenous vein (GSV) where is it and disables the venous valves?

1. reversed
2. In situ
3. Dacron
4. Gore-Tex

Answer 21

2. In situ

Question 22

True or False:

Holding transducer pressure over the area of a pseudoaneuryms will cause the aneurysm to clot off faster than a thrombin injection.

Answer 22

False

Question 23

Describe the color Doppler appearance within the outpouching of a pseudoaneurysm before any thrombin injection is performed. (What does the color pattern typically resemble?)

Answer 23

My Ans:
ying-yang appearance

Question 24

Which arterial abnormality is most consistent with the ultrasound image below? Keep in mind this is demonstrating obstruction with collateralization.

1. Chronic atherosclerotic obstructive disease
2. Acute arterial occlusion
3. Arteriovenous fistula
4. Pseudoaneurysm

Answer 24

1. Chronic atherosclerotic obstructive disease