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Jason's Neuro Block > CNS Infections > Flashcards

Flashcards in CNS Infections Deck (17):
1

3 most common CNS infections?

Meningitis
encephalitis
myelitis

2

which age group get meningitis most?

paeds, <1 yr mostly

3

3 main causes of meningitis

bacterial
viral
noninfections

4

3 main bacterial causes of meningitis? why?

H.Influenzae B
Neisseiria Meningitidis
Strep Pneumoniae
-good at immune evasion due to capsules

5

2 most common viral causes of meningitis?

Coxsackie
Echo

6

clinical features of paeds meningitis?

bulging fontanelle
altered mental state
fever
vomiting
non-blanching rash

7

which types of CSF become cloudy?

1. Bacterial (1000s Neutrophils, gram stain +ve))
2. TB (ZN +ve)

8

CSF analyse needs to occur when?

ASAP or else cell lyse and get messed up reading

9

Normal CSF pressure?

<150mm H20

10

Normal CSF WBC?

<5 x 10^6/L

11

Normal CSF glucose?

>60% blood

12

Differentiate bacterial and viral meningitis easily?

Nope. lots of overlap on CSF values, can't distinguish

13

Rx for meningitis?

Life support
fluids
antibiotics
steroids
contact prophylaxis

14

most common complication of bacterial meningitis?

hearing loss

15

key different symptoms between meningitis and encephalitis?

meningitis: normal consciousness
encephalitis: altered conscious state

16

what's the main cause of encephalitis?

almost always viral: HSV

17

Rx for encephalitis?

acyclovir