Cca Vascular

Front 1

LCCA

Back 1

direct off AO arc h

Front 2

RCC comes off the

Back 2

Brachiocelphiac

Front 3

VA comes off

Back 3

subclavian arteries

Front 4

why do we look at VA

Back 4

subclavian steel

Front 5

Anterior Circulation

Back 5

ICA, ECA, ACA- supplying blood to cerebral hemisphere ,MCA

Front 6

Posterior Circulation

Back 6

VA, Basilar, Circule of Willis

Front 7

what vessel do we look at with US

Back 7

CCA, ICA, ECA, VA, TCD (transcranial CD) biggest pop sicle cell traits

Front 8

CCA is lateral to

Back 8

trachea and thyroid

Front 9

RCCA usually orginates from

Back 9

brachocelphaic artery and LCCA comes of the aortic arch

Front 10

ICA

Back 10

originates from the CCA and travels into the bases of skull before giving off any branches

Front 11

First brach of ICA

Back 11

ophthalmic artery

Front 12

ICA feeds a low resistance bed

Back 12

A lot of flow (diastolic flow) , freeds the anterior brain and the eyes. no cervial branches, anterior and middle cerebral arteries are the terminal branches (circle of wills)

Front 13

ICA waveform

Back 13

swift upstroke slow decel to the baseline, a lot of end -diastolic flow, low resistance waveform

Front 14

ECA

Back 14

originates CCA, High resistance vascular bed, feeding face, neck branches. Usually smaller in caliber than the ICA and more medial in posterior.

Front 15

ECA waveforms

Back 15

Swift upstroke, Rapid Hugging baseline

Front 16

ECA 8 branches

Back 16

lingual artery, superior thyroid artery, maxillary artery, superior temporal artery, occipital artery, ascending phyarngeal artery, facial artery, posterior auricular artery

Front 17

superifical temporal artery

Back 17

temporal tap, tap in front of the ear, tap on the artery and see oscillations and spectral tracings of ECA

Front 18

VA

Back 18

part of the posterior circulation of the brain originates from subclavian arteries. VA forms the basilar artery0 base of circle of willis.

Front 19

VA direction of blood flow

Back 19

antegrade. above the baseline toward the brain

Front 20

Circle of willis

Back 20

intracranial communication channel at the base of the brain that connects the anterior and posterior circulatory systems

Front 21

Anterior and posterior circulatory system are only usually noted to have flow -

Back 21

stenosis- alternative pathways are needed

Front 22

what connects the psoterior cerebral to the ICA (ICA always in the middle)

Back 22

the posterior communicating

Front 23

fetal doppler sample

Back 23

middle cerebral artery

Front 24

why do we evaluate Carotid system

Back 24

STROKE, Cerebrovascular disease, Carotid bifuration- the most common site atherosclerotic lesion

Front 25

transient ischemia attack

Back 25

TIA, it is a fleeting(short lived) neurological dysfx without lasting effect. Usually bc of embolus from the ehart or carotid artery. Sensory or motor dysfx`

Front 26

Reversible ischemic neurologic deficit (RIND)

Back 26

last longr than a TIA and deficit resolves in time. Damge is reversible however, last longer than 24hrs

Front 27

Vertebrobasilar insufficiency usually causes

Back 27

bilateral symptoms of visual blurring or parasthesia and complains of vertigo, ataxia, drop attacks.

Front 28

Cebrebrovasular accident (CVA)

Back 28

stroke, very common in carotid duplex exam. storke produces permanent neurologic deficit

Front 29

3 types of stroke

Back 29

acute- sudden onsent unstable. stroke in evolution- symptoms come and go unstable. Complete stroke- or progression or resolution of symptoms considered stable. stroke event is over.

Front 30

Rule - if symptoms are below the neck

Back 30

opposite hemisphere is involved. numbness on the their right leg- stroke is on their left side

Front 31

if the symptoms are above the neck

Back 31

same side is involved. Visual problems right side of the body right side of the brain is involved

Front 32

Poiselles law

Back 32

remember the change is vessel diameter effect resistance ore dramatically than viscosity or vessel length

Front 33

Velocity increases - pressure

Back 33

decreases

Front 34

Bernoulli equation

Back 34

shows the velocity and pressure are inversely related. Flow divider where the CCA bifurcates lead to turbulence hence site of early plaque formation

Front 35

2 most common cause of cerebrovascular insuffiencey

Back 35

hypofusion, embolization. - usually due to stenosis, embolism, thrombosis

Front 36

Atherosclerosis

Back 36

thicken harden, and less elastic , becomes stiff

Front 37

Plaque characteristic

Back 37

surface, homogenous, hetergenous, extent

Front 38

4 kinds of plaque

Back 38

fatty streak- miminal area of atheroma on the wall. sofkt plaque- soft dark echoes int he lumen, calcific plaque, heterogenous plque

Front 39

hemodynamically significantly stenosis in artery when there is nore than

Back 39

50% diameter reduction/ 75% area reduction