Lesions Flashcards

0
Q

Unilateral CST lesion in brain or brianstem above decussation

A

Contralateral weakness, paralysis, increased reflexes, and babinski sign

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1
Q

Unilateral CST UMN in spinal cord

A

Ipsilateral weakness, paralysis, spasticity, increased reflexes, and babinski sign

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2
Q

Days after UMN lesion

A

Spinal shock

Flaccidity and areflexia

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3
Q

Lesion of spinal cord ventral horn or periphery

A

Ipsilateral weakness, paralysis, flaccidity, decreased or absent reflexes, muscle fasciculations

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4
Q

Lesion of lateral spinothalamic tract

A

Loss of pain and temp on contralateral side 1-3 segments below site of lesion

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5
Q

Lesion of anterior white commissure

A

Impair pain and temp sensation bilaterally

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6
Q

Lesion of dorsolateral medulla

A

Affects PICA

Loss of pain and temp on ipsilateral face (spinal trigeminal tract) and contralateral body

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7
Q

Unilateral lesion of spinal cord in dorsal columns

A

Ipsilateral impaired position and vibratory sensation

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8
Q

Unilateral lesion in medial lemniscus about decussation in medulla

A

Contralateral loss of position and vibration sensation

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9
Q

Unilateral lesion of thalamus, corona radiata, or cortex

A

Contra lateral loss of all sensory modalities

MVP and pain/temp

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10
Q

Lesion in Broca’s area

A

Motor aphasia

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11
Q

Lesion in wernickes area

A

Receptive aphasia

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12
Q

Lesion of optic nerve

A

Ipsilateral blindness

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13
Q

Lesion of middle of optic chiasm

A

Bitemporal hemianopsia (outer vision missing)

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14
Q

Unilateral lesion of optic tract

A

Contra lateral homonymous hemianopsia (can’t see R or L half)

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15
Q

Unilateral lesion of lateral geniculate or optic radiation

A

Contra lateral homonymous hemianopsia

16
Q

Lesion of temporal love affecting Meyers loop

A

Contralateral superior quantrantonopsia

Can’t see superior visual field

17
Q

Lesion of visual cortex

A

Contra lateral homonymous hemianopsia

Macular sparing

18
Q

Lesion in MLF

A

Lateral deviation normal no conjugate medial deviation

19
Q

Unilateral lesion in frontal eye field in frontal lobe

A

Eyes deviate towards side of lesion

20
Q

ACA lesion

A

Leg and foot motor and sensory

21
Q

MCA lesion

A

Broca’s and wernickes areas

Motor and sensory of face and upper extremities

22
Q

PCA lesion

A

Midbrain thalamus occipital lobe, inferior surface of temporal lobe

23
Q

Anterior choroidal artery lesion

A

Lateral geniculate body, globes pallidus, posterior limb of internal capsule

24
Q

Lateral striate arteries

A

Off of MCA
Stroke arteries
Internal capsule, caudate nucleus, putamen, globus pallidus

25
Q

Diencephalon (breathing) and eyes

A

Cheyne stokes respiration
Deeper and faster breathing
Small reactive pupils-symp originates here

26
Q

Midbrain (breathing) and eyes

A

Central neurogenic hyperventilation
Mid position fixed pupils
Bilateral impairment of para and symp

27
Q

Pons (breathing)

A

Apneustic respirations

Deep gasping inspiration with a pause at full inspiration with insufficient release

28
Q

Medulla (breathing)

A

Ataxic respiration

Very irregular breathing

29
Q

CN III

A

Uncal herniation
Unilateral dilated fixed pupils-Loss of light reflex
Loss of para traveling with nerve

30
Q

Lesion of MLF

A

Dolls eye test: oculocephalic reflex. Intact reflex eyes will deviate away from side the head is turning and will deviate conjugately
In a lesion: eyes will not deviate conjugately