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8501 Clin Med > Study Guide 5 > Flashcards

Flashcards in Study Guide 5 Deck (25)
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1

CNS disorders: What are the effects of aging?

Loss of
- cells
- efficiency
- nerve conduction velocity

Decreased neurogenesis
Buildup of aggregates

2

Buildup of aggregates in the CNS can lead to

Inflammation

3

CNS disorders: What are the effects of insult to the limbic system?

Progressive emotional instability

4

CNS disorders: What are the effects of insult to the frontal lobe?

- personality changes
- changes in executive function

5

Onset of metabolic and drug-induced comas

- behavioral changes
- decreased attention
- decreased arousal

6

Onset of comas from space-occupying lesions

- severe HA
- focal seizures

7

Pain response: metabolic or drug induced comas

Present and equal

8

Pain response: comas from space-occupying lesions

May be different on each side

9

Reflexes: metabolic or drug induced comas

- intact DTRs
- equal responses

10

Reflexes: comas from space-occupying lesions

- DTRs may be unequal
- positive Babinski

11

Positive Babinski indicates:

UMN lesion

12

Pupillary reaction: metabolic or drug-induced coma

Bilateral normal response

13

Pupillary reaction: comas from space-occupying lesions

May be unequal

14

Size of pupil: metabolic or drug-induced coma

- may be midpoint with anticholinergic
- pinpoint from opiates
- dilated from anoxia

15

Size of pupil: comas from space-occupying lesions (midbrain lesion)

Midpoint

16

Size of pupil: comas from space-occupying lesions (pons lesion)

Pinpoint

17

Size of pupil: comas from space-occupying lesions (herniation to brainstem)

Large

18

Corneal reflex: metabolic or drug-induced coma

- bilateral
- intact

19

Corneal reflex: comas from space-occupying lesions

- unequal
- may be absent

20

Eye movement: metabolic or drug-induced coma

- spontaneous movement without intention
- no reaction to VOR

21

Eye movement: comas from space-occupying lesions

May have paresis of lateral gaze with CN III compression

22

Decorticating or decerebrate posturing: metabolic or drug induced comas

- absent
- movement is normal

23

Decorticating or decerebrate posturing: comas from space-occupying lesions

Posturing may be present depending on level of lesion

24

Extremity movement: metabolic or drug-induced coma

Equal movement on both sides

25

Extremity movement: comas from space-occupying lesions

Paresis may be unilateral

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