Vascular Flashcards
Which transducer orientation is most accurate for visualizing plaque in the carotid arteries?
*transverse
*longitudinal
*oblique
*transverse
n evaluating the right ICA in transverse, which side of the screen should it appear (assuming the index marker is correctly positioned)?
*right
*left
*left
What is true about the External Carotid Artery?
*Larger than the Internal Carotid Artery
*Has cervical branches
*Positioned lateral to the Internal Carotid Artery
*Runs between the vertebrae
*Has cervical branches
All of the following are vertebrobasilar symptoms except:
*syncope
*vertigo
*memory loss
*hemiplegia
*hemiplegia
A Transient Ischemic Attack (TIA) differs from a stroke (CVA) because:
*a TIA leaves permanent neurologic deficits
*a TIA lasts for longer than 24 hours and completely resolves
*a TIA lasts for less then 24 hours and completely resolves
a TIA involves visual disturbances, and a CVA does not
*a TIA lasts for less then 24 hours and completely resolves
You perform percussion maneuvers on the superficial temporal artery and see oscillations on the spectral display. The artery being insonated is most likely:
*ICA
*ECA
*Vertebral Artery
*Thyrocervical trunk
*ECA
at is the first branch of the external carotid artery?
*Lingual artery
*Superior thyroid artery
*facial artery
*occipital artery
*Superior thyroid artery
Amaurosis fugax related to an internal carotid lesion will cause:
*permanent blindness of the contralateral eye
*temporary blindness or shading of the ipsilateral eye
*permanent blindness of the ipsilateral eye
*temporary blindness or shading of the contralateral eye
*temporary blindness or shading of both eyes
*temporary blindness or shading of the ipsilateral eye
When attempting to obtain good color filling of a low-velocity vessel like the vertebral artery, what color controls may be adjusted in order to improve the color?
*decrease the scale; decrease the gain
*increase the scale; decrease the gain
*increase the scale; increase the gain
*decrease the scale; increase the gain
*decrease the scale; increase the gain
According to the Doppler equation, the most accurate Doppler velocities are obtained at an angle of:
*0 degrees
*45 degrees
*60 degrees
*90 degrees
*0 degrees
In the case of Vascular doppler, we use an angle of _____ in order to correspond to the diagnostic criteria.
*0 degrees
*45 degrees
*60 degrees
*90 degrees
*60 degrees
Of the following values, which is the best width for a sample volume in obtaining doppler signals within the carotid arteries?
*1.5 mm
*2.0 mm
*2.5 mm
*3.0 mm
*1.5 mm
If the doppler gain setting is too high, what might that waveform appear to display?
*underestimation of velocity
*overestimation of velocity
*spectral broadening
*aliasing
*spectral broadening
Which of the following is not a typical doppler sample location in the carotid ultrasound?
*proximal CCA
*proximal ICA
*distal ICA
*distal ECA
*distal ECA
List the four steps involved when ‘mapping’ a stenosis in the carotid arteries.
1) Visualize the plaque
2) Work the sample volume through the stenosis
3) recored and measure the highest velocity
4) sample and record distal to a stenosis to detect turbulence
What are the two steps needed to improve color flow through a nearly occluded vessel?
1) use a low color scale setting
2) increase the color gain
According to the Consensus Panel- 2003, what is the ICA PSV for a stenosis of <50%?
*<125 cm/s
*>125 cm/s
*125-230 cm/s
*>230 cm/s
*<125 cm/s
According to the Consensus Panel- 2003, an ICA PSV of 275 cm/s correlates with which percentage of stenosis?
*<50% stenosis
*50-69% stenosis
*≥70% stenosis
*Occlusion
*≥70% stenosis
According to the Consensus Panel- 2003, an ICA EDV of 60 cm/s correlates to which degree of stenosis?
*<50% stenosis
*50-69% stenosis
*>70% stenosis
*occlusion
*50-69% stenosis
According to the Consensus Panel- 2003, an ICA PSV of 115 cm/s correlates to which percentage of stenosis?
*<50% stenosis
*50-69% stenosis
*≥70% stenosis
*occlusion
<50% stenosis
In order to image the vertebral arteries, you would place your transducer in the longitudinal orientation and view the CCA. From there, you would angle the probe more ___________ in order to visualize the vertebral artery.
*anteriorly
* laterally
*medially
*posteriorly
*posteriorly
A ____ mmHg gradient between left and right brachial pressures suggests subclavian stenosis
*5
*10
*15
*20
*20
In the case of a left subclavian steal, the technologist may observe retrograde flow in the:
*contralateral vertebral artery
*ipsilateral vertebral artery
*contralateral common carotid artery
*ipsilateral subclavian artery
*ipsilateral vertebral artery
What is the longest vein in the body?
*inferior vena cava
*superior vena cava
*femoral vein
*greater saphenous vein
*lesser saphenous vein
*greater saphenous vein
In the supine individual, hydrostatic pressure at the level of the ankles is approximately:
*0 mmHG
*50 mmHg
*22 mmHg
*100 mmHg
*0 mmHG
The optimal patient position for imaging of the lower extremity veins is:
*supine, bed flat
*supine, Trendelenburg’s position
*supine, Reverse Trendelenburg’s position
*Supine, leg elevated
*None of the above
*supine, Reverse Trendelenburg’s position
The veins of which area of the lower extremity have been found to be difficult to compress, and the ‘reverse compression technique’ must be used to visualize vein coaptation?
*groin
*proximal thigh
*distal thigh
*popliteal fossa
*distal thigh
Which type of lower extremity veins usually carry about 85% of the limb blood volume back to the heart?
*deep
*superficial
*perforators
*deep
Which vein is also known as the ‘femoral vein’?
*common femoral vein
*superficial femoral vein
*profunda femoral vein
*inferior femoral vein
*superficial femoral vein
Which of the following statements is TRUE?
*no anatomic anomalies are ever present in the lower extremity veins
* Bifed/duplicated iliac veins are common
*Bifed/duplicated femoral vein is uncommon
*Bifed/duplicated femoral vein is NOT uncommon
*Bifed/duplicated femoral vein is NOT uncommon
Deep veins have adjacent artery. Superficial veins do not.
True or False
True
Which of the following pass through the fascial plane and have several valves to prevent retrograde venous flow?
*deep veins
*superficial veins
* perforator veins
* perforator veins
What vein is formed from the confluence of the Right and Left Common Iliac Veins?
*IVC
*External iliac vein
*Common femoral vein
*Internal iliac vein
*IVC
Virchow’s Triad includes which three conditions?
*stasis, hypocoagulability, hypertension
*stasis, hypercoagulability, hyperlipidemia
*stasis, vein wall injury, hypercoagulability
*vein wall injury, hypercoagulability, congestive heart failure
*stasis, vein wall injury, hypercoagulability
A condition resulting in a grossly swollen and cyanotic leg that is caused by iliofemoral venous thrombosis is known as:
*Stasis dermatitis
*Lymph edema
*Phlegmasia cerulea dolens
*Homan’s sign
*Phlegmasia cerulea dolens
Traditionally, venous Doppler waveforms have been displayed __________________. This is what will be expected on your scan assessment.
*above baseline
*below baseline
*below baseline
Which of the following is usually a symptom of superficial thrombophlebitis instead of DVT?
*persistent leg pain with acute onset
*palpable cord
*massive thigh and calf swelling
*cyanosis
*palpable cord
Annually, the incidence of DVT’s in the U.S. are estimated to be:
*less than 1 million cases
*200,000 cases
*1-10 million cases
*over 20 million cases
*1-10 million cases
Which of the following is an example of venous stasis?
*cancer
*thrombophilia
*very long airplane ride
*high dose estrogen Rx
*very long airplane ride
According to Daigle, if a patient has all these symptoms for a DVT: persistent leg pain, persistent leg swelling, calf tenderness; then their chance of having a DVT is:
* 20%
*50%
*70%
*100%
*50%
When performing compressions on the veins at the groin, the best image and best compression is obtained when the transducer is angled:
*parallel to the skin
*oblique to the skin
*perpendicular to the skin
*no particular angle
*perpendicular to the skin
Which of the following vessels are present at the saphenofemoral junction?
*common femoral artery, common femoral vein, great saphenous vein
*superficial femoral artery, deep femoral artery, superficial femoral vein, great saphenous vein
*superficial femoral artery, deep femoral artery, common femoral vein, great saphenous vein
*common femoral artery, superficial femoral vein, profunda femoral vein, great saphenous vein
*superficial femoral artery, deep femoral artery, common femoral vein, great saphenous vein
If a thrombus is present in the GSV, what area is carefully evaluated to make sure there is no extension into the deep system?
*saphenofemoral junction
*saphenopopliteal junction
*SFV-PFV confluence
*CFV-EIV confluence
*saphenofemoral junction
A patient who experiences a visual disturbance and describes it as a “shade being drawn over one eye” may be describing which of the following?
*Diplopia
*Hemiparesis
*Amaurosis Fugax
*Homonymous Hemianopia
*Amaurosis Fugax
In the Doppler equation, the symbol ‘c’ stands for which of the following?
*cosine
*theta
*transmitted frequency
*speed of sound in soft tissue
*speed of sound in soft tissue
Which normal cerebrovascular vessel demonstrates the highest flow resistance?
*exterrnal carotid artery
*internal carotid artery
*common carotid artery
*vertebral artery
*external carotid artery
Typically, dizziness is classified as a:
*anterior symptom
*posterior symptom
*lateral symptom
*medial symptom
*posterior symptom
What is the first branch of the ECA?
*Lingual Artery
*Superior Thyroid Artery
*Facial Artery
*Occipital Artery
*Superior Thyroid Artery