Spinal Cord Disorders Flashcards

1
Q

thoracic spinal cord lesions detected by which signs

A

UMN signs

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2
Q

region for LMN

A

anterior horn cells

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3
Q

region for UMN

A

CST

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4
Q

atrophy and weakness for UMN lesions

A

severe weakness with mild atrophy

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5
Q

atrophy and weakness for LMN lesions

A

severe atrophy with mild weakness

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6
Q

spasticity seen with

A

UMN lesion

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7
Q

clonus seen with

A

UMN lesion

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8
Q

deltoid/biceps root

A

C5/6

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9
Q

triceps root

A

C7/8

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10
Q

interossei/flexor digitorum (finger flexors)

A

C8/T1

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11
Q

Iliopsoas (hip flexor), quadriceps

A

L2-4

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12
Q

tibialis anterior (foot dorsiflexor)

A

L4,5

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13
Q

Gastrocnemius (foot plantar flexor)

A

S1,2

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14
Q

lightning, stabbing, shooting, or electrical pain in dorsal root dermatomal distribution

A

radicular/root pain

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15
Q

cause of radicular pain

A

shingles (herpes zoster) or extramedullary lesion (herniated disc, tumor) giving compression

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16
Q

pain from intramedullary lesion

A

dull or absent

17
Q

STT lesion gives

A

contra pain/temp deficit

18
Q

suspended pattern of STT deficit w/ sacral sparing

A

intramedullary lesion w/in spinal cord (sacral fibers spared b/c they are most lateral)

19
Q

STT deficit up to a level w/ sacral invovlement

A

extramedullary lesion

20
Q

dorsal column lesion gives

A

ipsi position/vibration deficit

21
Q

where does dorsal column decussate

A

rostrally in medulla

22
Q

transverse myelopathy (transection) level indicated by

A

dermatomal level of sensory loss and LMN signs

23
Q

spinal/neurogenic shock initially present if

A

transection is due to severe acute trauma

24
Q

spinal/neurogenic shock sxs

A

weakness + dec muscle tone/reflexes (UMN signs seen wks-months later)

25
Q

transverse myelopathy due to

A

tumor, spinal stenosis, hemorrhage, abscess, ischemia, trauma

26
Q

transverse myelitis (inflammatory) due to

A

viral infection, vaccine reaction, autoimmune demyelination (MS)

27
Q

brown sequard sxs

A

hemisection - contra STT, ipsi dorsal column, ipsi weakness, UMN and LMN signs

28
Q

syringomyelia is intra- or extra- medullary

A

intramedullary - primarily affects gray matter

29
Q

syringomyelia sxs

A

STT - suspended sensory level (just the select dermatomes invovled) w/ sacral sparing
dorsal unaffected

30
Q

ASA supplies

A

anterior/ventral 2/3 of spinal cord

31
Q

ASA occlusion (spinal cord stroke) via

A

atherosclerosis, complication of aortic aneurysm surgery, aortic dissection via HTN

32
Q

ASA occlusion (spinal cord stroke) sxs

A

CST - paraplegia
UMN signs in lower limbs
thoracic level of STT loss (no sacral sparing)
nl dorsal columns

33
Q

ASA occlusion (spinal cord stroke) initial presentation

A

back or radicular pain - sudden onset and progresses over hrs

34
Q

subacute combined degen due to

A

Vit B12 deficiency
aka posterolateral sclerosis

Copper deficiency or HIV can also cause this

35
Q

subacute combined degen sxs

A

dec vibration/position in lower limbs
spastic paraparesis
STT spared
demyelination/degenration of white matter at thoracic levels

36
Q

spared with ALS

A

sensory pathways
bowel/bladder fxn
no radicullar pain

37
Q

tabes dorsalis

A

neurosyphilis affecting the spinal cord

38
Q

tabes dorsalis sxs

A

radicular pain in lower limbs
impaired vibration/position in lower limbs
loss of all sensation and reflexes in lower limbs
strength intact