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TCD > Class 3: Vertebral/Basilar Artery > Flashcards

Class 3: Vertebral/Basilar Artery Flashcards

1
Q

Which is larger the basilar or MCA?

A

The basilar is 2x the size of the MCA

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2
Q

What is entry to the skull called?

A

Magnum foramen

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3
Q

The VA unite to form what?

A

The basilar artery

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4
Q

What is the flow direction in the VA?

A

Away

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5
Q

What is the flow direction of the BA?

A

Away.

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6
Q

How does the VA and BA flow relate?

A

The flow is kind of equal but the BA is higher.

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7
Q

What window can the VA be obtained in?

A

Transforamenal (suboccipital) window.

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8
Q

How should you move the probe while trying in insonate the VA?

A

Start at the midline at the nape of the neck groove and move towards the nose and sweep laterally.

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9
Q

What is the segment depth for the VA?

A

60-80 mm

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10
Q

What is the flow direction of the VA?

A

Away from the transducer

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11
Q

Where can the basilar artery be insonated?

A

Transformenal (suboccpital) window.

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12
Q

How should you move the probe while insonating the BA?

A

Start at the nape of the neck groove and angle the probe towards the nose.

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13
Q

What is the segment depth for the BA?

A

60-100

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14
Q

WHat is the flow direction of the BA?

A

Away from the transducer.

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15
Q

What type of waveform would a stenosis present?

A

A parvus tardus waveform.

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16
Q

What does a high-resistance flow and no diastolic flow indicate?

A

Distal obstruction

17
Q

What is subclavian steal phenomenon?

A

It is a steno-occlusive disease of proximal subclavian artery with retrograde flow in the ipsilateral vertebral artery.

18
Q

What are the two synonyms for subclavian steal syndrome?

A
  1. Subclavian steal phenomenon
  2. Subclavian steal steno-occlusive disease
19
Q

What side of subclavian steal is most common and why?

A

The left side is most common because the BCA doesn’t stenois as quick.

20
Q

What are the ymptoms of subclavian steal if the RT PCoM isnt opened?

A

Vertigo and balance issues.

21
Q

What is the diagnostic test for subclavian steal?

A

Reactive hyperemia.

22
Q

What are the two provocative maneuvers in steal syndrome?

A
  1. Inflation of pressure cuff on arm for 3 minues and rapid deflation.
  2. Exercising the diseased limb.
23
Q
A

TCD (5 decks)

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