Neurologic/Psychiatric Disorders Flashcards Preview

USMLE Step Two > Neurologic/Psychiatric Disorders > Flashcards

Flashcards in Neurologic/Psychiatric Disorders Deck (93)
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1

CSF findings in bacterial meningitis

neutrophils
high protein
low glucose
positive culture/positive gram stain

2

CSF findings in viral meningitis

lymphocytes
high protein
normal glucose
viral PCR may be positive

3

CSF findings in viral encephalitis

lymphocytes
high protein
normal glucose
viral PCR may be positive

may also see frontotemporal hemorrhage and RBCs in HSV encephalitis

4

CSF findings in tuberculosis meningitis

lymphocytes
high protein
very low glucose
positive for acid-fast bacilli

5

CSF findings in guillain-barre syndrome

no cells
high protein
normal glucose

6

CSF findings in multiple sclerosis

few lymhocytes
slightly high protein
normal glucose
oligoclonal bands

7

CSF findings in acute disseminated encephalomyelitis

lymphocytes
high protein
normal glucose
oligoclonal bands

8

CSF findings in subarachnoid hemorrhage

lymphocytes and many RBCs
high protein
normal glucose
xanthochromia

9

CSF: RBCs and no xanthochromia

traumatic tap

10

CSF: positive EBV PCR

highly suggestive of CNS lymphoma

11

CSF: oligoclonal bands

multiple sclerosis, CNS infections, or non-infectious inflammatory processes (SLE)

12

CSF: low glucose

bacterial or mycobacterial infections

13

CSF: lymphocytes

viral, fungal, or mycobacterial infection, demyelination, CNS lymphoma

14

normal CSF pressure

70-180 mmH2O

15

where olfactory nerve exits

cribiform plate

16

where optic nerve exits

optic canal

17

where oculomotor nerve exits

superior orbital fissure

18

where trochlear nerve exits

superior orbital fissure

19

where trigeminal V1 exits

superior orbital fissure

20

where trigeminal V2 exits

foramen rotundum

21

where trigeminal V3 exits

foramen ovale

22

where abducens nerve exits

superior orbital fissure

23

where facial nerve exits

internal auditory meatus

24

where vestibulocochlear nerve exits

internal auditory meatus

25

where glossopharyngeal nerve exits

jugular foramen

26

where vagus nerve exits

jugular foramen

27

where accessory nerve exits

jugular foramen

28

where hypoglossal nerve exits

hypoglossal foramen

29

pupillary reflex

CNII (afferent fibers) and CNIII (efferent fibers)
shine line in each pupil and observe reaction and accomodation

30

oculocephalic (doll's eyes) reflex

CNVIII (afferent) and CN III, IV, and VI (efferent) forcibly turn head horizontally and vertically and observe for conjugate eye movement in opposite direction