Lesions Flashcards
Unilateral CST lesion in brain or brianstem above decussation
Contralateral weakness, paralysis, increased reflexes, and babinski sign
Unilateral CST UMN in spinal cord
Ipsilateral weakness, paralysis, spasticity, increased reflexes, and babinski sign
Days after UMN lesion
Spinal shock
Flaccidity and areflexia
Lesion of spinal cord ventral horn or periphery
Ipsilateral weakness, paralysis, flaccidity, decreased or absent reflexes, muscle fasciculations
Lesion of lateral spinothalamic tract
Loss of pain and temp on contralateral side 1-3 segments below site of lesion
Lesion of anterior white commissure
Impair pain and temp sensation bilaterally
Lesion of dorsolateral medulla
Affects PICA
Loss of pain and temp on ipsilateral face (spinal trigeminal tract) and contralateral body
Unilateral lesion of spinal cord in dorsal columns
Ipsilateral impaired position and vibratory sensation
Unilateral lesion in medial lemniscus about decussation in medulla
Contralateral loss of position and vibration sensation
Unilateral lesion of thalamus, corona radiata, or cortex
Contra lateral loss of all sensory modalities
MVP and pain/temp
Lesion in Broca’s area
Motor aphasia
Lesion in wernickes area
Receptive aphasia
Lesion of optic nerve
Ipsilateral blindness
Lesion of middle of optic chiasm
Bitemporal hemianopsia (outer vision missing)
Unilateral lesion of optic tract
Contra lateral homonymous hemianopsia (can’t see R or L half)
Unilateral lesion of lateral geniculate or optic radiation
Contra lateral homonymous hemianopsia
Lesion of temporal love affecting Meyers loop
Contralateral superior quantrantonopsia
Can’t see superior visual field
Lesion of visual cortex
Contra lateral homonymous hemianopsia
Macular sparing
Lesion in MLF
Lateral deviation normal no conjugate medial deviation
Unilateral lesion in frontal eye field in frontal lobe
Eyes deviate towards side of lesion
ACA lesion
Leg and foot motor and sensory
MCA lesion
Broca’s and wernickes areas
Motor and sensory of face and upper extremities
PCA lesion
Midbrain thalamus occipital lobe, inferior surface of temporal lobe
Anterior choroidal artery lesion
Lateral geniculate body, globes pallidus, posterior limb of internal capsule
Lateral striate arteries
Off of MCA
Stroke arteries
Internal capsule, caudate nucleus, putamen, globus pallidus
Diencephalon (breathing) and eyes
Cheyne stokes respiration
Deeper and faster breathing
Small reactive pupils-symp originates here
Midbrain (breathing) and eyes
Central neurogenic hyperventilation
Mid position fixed pupils
Bilateral impairment of para and symp
Pons (breathing)
Apneustic respirations
Deep gasping inspiration with a pause at full inspiration with insufficient release
Medulla (breathing)
Ataxic respiration
Very irregular breathing
CN III
Uncal herniation
Unilateral dilated fixed pupils-Loss of light reflex
Loss of para traveling with nerve
Lesion of MLF
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
