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Flashcards in 5. Cranial Neurosurgery Deck (187)
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1

What lesion can produce head tilt?

Anterior vermis, 4th nerve palsy
In MG - head tilts back

2

Vermicular movement of face with pontine demyelination?

Myokymia

3

DBS of ventral intermediate thalamic nucleus for what dx?

Parkinson
Essential tremor

4

Dysarthria and clumsy-hand syndrome?

Genu of internal capsule

5

Dilute pilocarpine constrict what type of pupil?

Addie's pupil, but not harm dilated

6

Consensual light reflex > direct light reflex

Afferent pupillary defect

7

Most common cause of spontaneous diplopia in middle-aged

Grave's

8

Parkinson with vertical gaze palsy?

Progressive supranuclear palsy

9

one-and-a-half syndrome - which eye movement is preserved?

Abduction of unaffected eye

10

Oculomotor palsy from aneurysm vs diabetic?

Diabetes: pain with pupillary sparing
Aneurysm - compress parasympathetic fibers on periphery

11

Ataxia, myoclonus, positive 14-3-3 protein and bilateral sharp waves on ECG?

CJD

12

Actual vs absence seizure?

EEG, prolactin, muscle enzyme

13

EEG for absence seizure

3Hz wave and spike

14

Diplopia of MG vs compressive lesion?

Intermittent vs progressive/constant

15

Which EOM if horizontal object appears slanted?

SO

16

Test for HTN from pheo vs essential?

Clonidine suppression test

17

%L hemisphere dominant in L handed individuals

>75%

18

Clinical symptoms of NPH

Gait disturbances (usually first, most pronounced)
Memory loss
Urinary incontinence

Enlarged ventricles on CT but normal pressure of CSF by LP

19

Area involved in cortical inhibition of B&B damaged in NPH

Paracentral lobule

20

R/O other dx before NPH

Vascular dementia
Parkinson
Lewy body dementia
Cervical spondylotic myelopathy
Peripheral neuropathy

21

Pupillary reflex pathway

Optic nerve -> superior colliculus -> Edinger-Westphal nuclei -> (third cranial nerve) ciliary ganglion -> short ciliary nerves

22

Causes of circumoral paresthesia

Hypocalcemia
Hyperventilation
Syringobulbia
Neurotoxin fish poison

23

Low vs high pitch tinnitus

Low: conductive/meniere
High: sensorineural

24

"Transverse smile"

Myasthenic snarl with bulbar involvement in MG

25

Facial myokymia

MG, intrinsic brainstem glioma

26

What maneuver to elicit nystagmus of benign positional vertigo?

Dix-Hallpike maneuver

27

Lateral medulla nuclei

Inf. vestibular nuclei
Solitary nucleus
Inferior cerebellar peduncle
Descending tract of V
Spinothalamic tract

28

Benign positional vertigo characteristics

Position worsens or alleviates symptoms

29

Meniere's disease: clinical findings

Tinnitus, bouts of vertigo, hearing loss
Can mimic acoustic neuroma

30

Lateral medulla infarct (wallenberg)

Vertigo, nausea/vomiting
Ddysphagia
Ipsilateral sensory loss of face pain/temp
Ipsilateral horner
Contralateral pain/temp