Micro 1 CNS Flashcards Preview

Test 7 > Micro 1 CNS > Flashcards

Flashcards in Micro 1 CNS Deck (18):
1

Pleocytosis

Increased WBC in CSF

2

Myelitis

Inflammation of spinal cord

3

Meningismus

Found more in bacterial than viral meningitis

4

Brain stem involvement (ataxia and/or nystagmus)

Suggestive of Listeria

5

Kernig's sign

Hamstring spasm to protect inflamed sciatic nerve

6

Brudzinski's sign

Leg flexion in response to neck flexion

7

Highest CSF pressure

Bacterial

8

Normal CSF pressure

50-180

9

Bacterial meningitis Protein & Glucose levels

Protein > 200
Glucose < 40

10

Petechiae

Usually bacterial

11

Immune response

IgA
Complement

12

Bacterial strategies

IgA protease
Polysaccharide capsule against complement

13

Bacterial meningitis: 3 causes of brain edema

Vasogenic (increased BBB permeability)
Cytotoxic
Interstitial (obstruction of CSF flow)

14

Aseptic meningitis lab levels

Protein normal or slightly raised
Glucose unchanged
Lymphocyte dominance

15

Most common meningitis viral cause

Enterovirus

16

Most common encephalitis viral cause

HSV

17

Brain abscess triad

Fever, headache, focal neurologic deficit

18

Brain abscess most common cause

Streptococci (esp. pepto)