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IC3 Blue Book > Cranial Nerves > Flashcards

Cranial Nerves Flashcards

1
Q

Pupillary reflex

A

Afferent-2

Efferent-3

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2
Q

Marcus gunn pupil

A

Relative afferent pupillary defect
Optic nerve or retinal injury–
Affected pupil paradoxically dilates after a short time

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3
Q

Monocular blindness

A

MS

Giant cell arteritis

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4
Q

Bi temporal hemianopia

A

Pituitary adenomas

ICA aneurysm

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5
Q

Homonymous hemianopia

A

Post chiasm
Stroke
Abscess
Tumor

SAT

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6
Q

In attention CN2

A

Stroke

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7
Q

Diplopia look side

A

Lateral image from affected eye

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8
Q

Diplopia look down

A

Lower image from affected eye

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9
Q

Diplopia look up

A

Upper image from affected eye

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10
Q

Down and out and ptosis PUPIL DILATED

A

Complete CN3 palsy

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11
Q

Complete CN3 palsy

A

PCA aneurysm

RICP tentorial herniation

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12
Q

CN4 palsy

A

Alone-rare

Orbit trauma

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13
Q

Partial CN3 palsy

A

Diabetes– pupil spared

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14
Q

Why pupil sparing partial CN3?

A

Pial vessels spared which supply parasympathetic

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15
Q

CN6 palsy

A

Skull fracture Petrous bone
Nasopharyngeal carcinoma
RICP (F localizing sign)

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16
Q

CN5 DD

A

Idio- trigeminal neuralgia
Acoustic neuroma
Herpes zoster

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17
Q

Deviation jaw CN5 palsy

A

Deviates towards side of weakness

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18
Q

Jaw jerk reflex

A

Stroke
MS
Tumor

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19
Q

Minimal or absent jaw jerk reflex

A

Normal

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20
Q

Brisk jaw jerk reflex

21
Q

Bells sign

A

Upward gaze on attempted eye closure

22
Q

LMN 7

A

Bells
Malignant parotid tumor
Ramsay hunt
Sarcoidosis– often bilateral

23
Q

UMN 7

A

Stroke

Tumor

24
Q

Conductive hearing loss

A

Rinnes- AB

Weber- affected ear

25
Q

Sensorineural

A

Rinnes- normal

Weber- normal side

26
Q

CN8 palsy

A

XS noise levels
Ménière’s disease
Furosemide
Amino glycosides- gentamicin

27
Q

Change in taste

A

Chorda tympani

28
Q

Loud noises

A

Nerve to stapedius

29
Q

Bulbar palsy

30
Q

Pseudobulbar palsy

31
Q

LMN

A 
MND
Diptheria
Polio
GBS
Syringobulbia
32
Q

UMN

A

MND
Bilateral strokes- internal capsule
MS

33
Q

Tongue LMN

A

Flaccid
Wasting
Fasciculations

34
Q

Tongue UMN

A

Spastic

Contracted

35
Q

Drooling and dysphonia… LMN

A

Tremulous lips

36
Q

Drooling and dysphonia… UMN

A

Emotional lability

37
Q

Cerebellopontine angle Tumor

A

Acoustic neuroma

Meningioma

38
Q

Cp angle Tumor

A

5
7 + 8
5
9+ 10

39
Q

Paget’s disease bone

40
Q

Gradenigos syndrome

A

Complication of otitis media
5,6

Peri orbital unilateral pain-5
Diplopoa-6
Otorrhoea- infection

41
Q

Syringobulbia

A

Bulbar palsy 9,10,11
Vertigo and nystagmus 8
Facial pain/ sensory loss 5
Sparing 7

Horners
Syringomyelia

42
Q

Cavernous sinus thrombosis

A

3,4,6
5- pain and loss corneal reflex

Peri orbital oedema
Headache
Pro ptosis

43
Q

Causes any cranial nerve palsy

A

Diabetes

Stroke
Ms
Tumor

SLE
Sarcoidosis
Vasculitis

44
Q

Ptosis unilateral

A

CN3
Horners
Congenital

45
Q

Bilateral ptosis

A

MG
myotonic dystrophy
Congenital

46
Q

Opthalmoplegia

A 
MG
cn palsy
Graves
Wernicke
Progressive supra nuclear palsy
47
Q

INO DDX

A

MS
STROKE
LYME
TCA OD

48
Q

Change in smell

A

Trauma
Frontal lobe Tumor
Meningitis

IC3 Blue Book (16 decks)

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