Neuro 10: Brain hemisphere circulation Flashcards

(47 cards)

1
Q

Cerebral hemisphere anterior circulation comes from

A

Internal carotid

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2
Q

Cerebral hemisphere posterior circulation comes from

A

Vertebral arteries

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3
Q

Terminal branches of internal carotids

A

anterior cerebral arteries (ACAs)
middle cerebral arteries (MCAs)

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4
Q

Putamen circulation source

A

ACA

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5
Q

Caudate nucleus circulation source

A

MCA

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6
Q

Thalmus circulation source

A

PCA

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7
Q

Superior left MCA infarct signs

A

Upper motor neuron right face and arm weakness

Broca’s aphasia (has trouble getting words out)

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8
Q

Inferior Left MCA infarct

A

Wernicke’s aphasia (forms sentences that makes no sense). Right visual field defect. Usually no motor findings

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9
Q

Deep Left MCA infarct

A

Right upper motor neuron hemiparesis

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10
Q

Left MCA Stem infarct

A

Right hemiplegia, right hemiamnesthesia, aphasia,

left gaze preference

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11
Q

Right superior MCA infarct

A

Left face/arm weakness, left hemineglect

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12
Q

Inferior Right MCA infarct

A

Profound left hemineglect.
Left visual field and somatosensory deficits

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13
Q

Deep right MCA infarct

A

Left motor hemiparesis

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14
Q

Right MCA stem infarct

A

Left hemiplegia, hemianesthesia, left hemineglect.

Right gaze preference.

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15
Q

Left ACA infarct

A

Right leg UMN weakness. Right leg cortical sensory loss.

Grasp reflex maybe

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16
Q

Right ACA infarct

A

Left leg UMN weakness. Left leg cortical sensory loss.

Grasp reflex maybe

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17
Q

Left PCA infarct

A

Right homonymous hemianopia

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18
Q

Right PCA infarct

A

Left homonumous hemianopia

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19
Q

Gaze preference side

A

“looks towards lesion”

20
Q

ACA infarcts affect…

A

Contralateral leg more than arm or face

21
Q

Watershed infarct

A

Area between two arteries is most affected

22
Q

Man in barrel syndrome

A

Proximal arm and leg weakness as a result of watershed infarct of ACA and MCA

23
Q

Carotid stenosis causes _________

A

Watershed infarct of ACA-MCA

24
Q

TIA duration

A

Typically 10 min

25
Hemmorhagic conversion
Ischemic stroke ruptures to become brain bleed
26
Thrombotic vs embolic infarct
Thrombosis: forms clot on blood vessel Embolic: travels from elsewhere
27
Lacunar infarct
Small vessel infarct resembling lake
28
Lypohyalinosis
hypertension related changes in arterial walls
29
Pure motor hemiparersis
UMN
30
Ataxic hemiparesis
UMN hemiparesis with additional ataxia
31
Large MCA infarct common complication
Edema and mass swelling.
32
Carotid dissection signs
Patient may hear heartbeat and have ipsilateral Horner’s
33
Vertebral artery dissection symptoms
Posterior neck and occipital pain
34
Superficial veins drain into
superior sagital sinus
35
Deep veins drain into
Vein of galen
36
All venous drainage from brain goes to
Internal jugulars
37
Sagittal sinus thrombosis S/s
Seizures, increased ICP, decreased LOC, headaches and papilledema
38
Common subarachnoid hemmorhage locations
Origin or ACA, PCA or bifurcation of MCA
39
Homonymous hemianopia
Vision field deficits in same half of visual field on both eyes
40
Hemianesthesia
Loss of sensitivity to stimuli on one side
41
Hemiplegia
One sided paralysis
42
Cortical sensory loss
Loss of discriminative sensation
43
Alexia without agraphia
Patient can write but cant read
44
Medial geniculate lesion symptom
hearing loss
45
Corpus callosum lesion symptom
alexia without agraphia
46
Visual cortex lesion symptom
Homonymous hemianopia with macula sparing
47
Thalmic infarct symptoms
PURELY SENSORY Contralateral homonymous hemianopia Complete contralateral sensory loss