CVTE 103 Carotid Flashcards
Rotating:
turning the beam around its axis.
Angling:
sweeping the beam across its axis
Usually in short
Rocking
the beam along its axis.
Sliding:
moving the probe across the skin.
There are only four basic kinds of probe movement—four things you can do with the ultrasound beam to alter your image.
Angling Rotating Rocking Sliding
Don’t let your elbow
stick out to the side. Just let it drop relaxed from the shoulder. This keeps you from bending at the wrist into the “carpal tunnel position”.
The brain is perfused by …
the two carotid and two vertebral arteries
The ophthalmic arteries arise just…
proximal to the circle of Willis.
The internal carotid arteries perfuse
the eyes
The external carotid arteries perfuse
the face and scalp.
ophthalmic artery branches from
ICA just proximal to the circle of Willis and the brain.
Common carotid artery arises from
the aortic arch on the left, from the innominate bifurcation on the right.
The CCA bifurcates into
internal carotid and external carotid arteries at about the level of the laryngeal prominence (Adam’s apple).
Transverse divides things into
superior and inferior.
The right carotid artery is the first branch off of the aorta. The first branch off of the aorta is the innominate and it bifurcates into
the right subclavian and the right common coratid artery.
The left common carotid artery comes off of
the aorta.
Most strokes are caused by
atheromatous plaque at the carotid bifurcation.
Other possible causes of stroke include
hemorrhagic stroke and embolic activity from the heart.
Superficial temporal artery and the temporal artery can provide
collateral circulation if the ICA is blocked.
The superficial temporal artery is the superior part of the ECA.
The superior thyroid is just a landmark to find
the ECA
Superficial is
on the top next to the surface
Deep is
farther down than superficial
Medial is to the
right on the right, to the left on the left.
Transverse procedure:
Start low in the neck, bumping the clavicle.
Keep the CCA centered and move distally to the bifurcation.
Identify the branches, then go as far distally as possible in the ICA.