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Flashcards in Vascular Final Deck (103)
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1

What are the warning signs of a stroke?

Aphasia
Dysphasia
Dysphagia
Dysarthria
Tingling and numbness
Vertigo
Transient blindness
Pg33

2

A difference of 20 mmHg might indicate disease in what vessel?

Subclavian Steal

3

What type of waveform is seen in the ECA?

High resistive
pg. 47 4th ed.

4

What type of waveform is seen in the ICA?

Low resistive
pg. 47 4th ed.

5

What are the findings we would see with an ICA occlusion?

-No Doppler flow
-ECA and CCA will have similar waveforms
pg. 60 4th ed.
Also, possible increased velocity in the ipsilateral ICA

6

What is a TIA?

Stroke symptoms lasting less than 24 hours

7

What is the criteria of an 80% diameter reduction (velocity)?

Increased velocity?

8

A normal vertebral artery should be?

They are often different sizes, bilaterally, and flow velocities may be asymmetrical.
One vertebral artery is often dominant in terms of flow and velocity
p91

9

Where should the Doppler sample volume be placed in reference to the vessel?

parallel in middle of vessel

10

What portion of the carotid vessel will be affected with FMD?

FMD is found in the renal arteries and in the internal carotid arteries and occurs predominantly in women.
p 63

The distal ICA should be carefully evaluated with spectral and color Doppler to detect FMD
p 64

11

How many strokes occur each year in USA?

795,000. (google)

12

The Innominate artery divides into what arteries?

RT CCA
RT Subclavian A
pg. 35 4th ed.

13

The Doppler sample volume should be at what?

2 mm
per Beth 10/4/16

Small

14

If there is an abnormal Doppler waveform in the ICA, where would that suggest disease at?

A high resistance ICA waveform may also occur with stenosis in the distal ICA. However, condition usually coexists with extensive disease in the proximal ICA. pg 65 4th ed

proximal or distal ICA occlusion/disease
Carotid Test

15

If there is an occlusion of the ICA, the ipsilateral ICA velocities might be what?

If one side is occluded the other side (the contralateral) the velocity will increase. pg 80 4th edt.

16

What portions of ICA should we Doppler?

Prox/Mid/Distal

17

When determining the ICA/CCA ratios, what section of the CCA is used for the ratio?

mid/dist
per Beth - 10/4/16

dist

18

What is characteristic of a subclavian steal?

retrograde flow in the vertebral
per Beth - 10/4/16

19

Is an ICA systolic velocity less than 125 cm/sec normal or abnormal?

Normal (no stenosis)
pg. 73

a stenosis less than 50% diameter reduction
carotid test

20

Intraoperative carotid Dopplers can identify what? What do we see in the waveforms?

---

21

What is Amaurosis Fugax?

Temporary, partial, or total blindness often resulting from transient occlusion of the retinal arteries

22

The carotid body assists in regulating what?

It assists in heart rate, blood pressure, and respiration

Hagen-Ansert volume 2 pg. 875

Except balance

23

Which branch of ECA do we see most?

Superior thyroid artery
pg. 36 4th ed.

24

Noise caused by tissue vibration from turbulent flow is?

Bruit
Beth - 9/27/16

25

While color duplex imaging there may be an area where the color doesn't fill in the vessel, what might this be from?

boundary layer separation
per Beth 10/4/16

26

Blood pressure cuffs should be what percentage greater than the limb?

20%

27

What are the characteristics of normal Doppler signal?

---

28

A normal PVR waveform contains what?

A sharp upslope and a prominent reflected wave, also called a dicrotic notch, in late systole and early diastole

29

What plane should you image arteries?

Sagittal

30

What angle should be used for a Doppler study?

45-60 degrees