Coma CC5 Flashcards Preview

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Flashcards in Coma CC5 Deck (37):
1

cheynne stokes respiratiorn means ___ isnt working

diencephalon

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2

Pupillary Light Reaction

sympathetic probem.. eyes can't

dilate

3

Pupillary light reflex

Parasympathetic problem then the eyes can't

 

constrict

4

OculoVestibular reflexes: vestibular nucleus excitation causes excitations of contralateral

lateral rectus (via 6)

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5

OculoVestibular reflexes: vestibular nucleus excitation causes excitations of ipsilateral

medial rectus via 3

6

Decorticate = lesion above the

 red nucleus of the midbrain

7

Decorticate posture

what is flexed and adducted

arm, wrist, finger flexion, adduction of upper extremity

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8

decorticate posture what is extended

 leg extension, internal rotation, plantar flexion

9

Decerebrate = lesion below the red nucleus, release of __ output

vestibulospinal

10

with both decorticate and decerebrate you get

extension of  legs and planatr flexion

11

sx of decerberate posturing 

- internal rotation of arms, clenching of jaws, stiff extension of limbs - extension of trunk and legs (opisthotonos), plantar flexion

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12

Bilateral Diencephalic Stage (thalamus)

respiration pattern?

Cheyenes- Stokes

13

Bilateral Diencephalic Stage (thalamus)

 

pupillary size? 

Small pupils with small range of constriction

14

Bilateral Diencephalic Stage (thalamus) 

eye reflexes?

Eye reflexes normal (because brainstem is unaffected)

15

Bilateral Diencephalic Stage (thalamus)

 

Motor Responses at rest and to stimulation

Motionless, bilateral Decorticate posturing upon stimulation

16

if someone is in a coma it is the ___ or ____

reticular formation or bilateral cortex

17

occulovestibular reflexes tests the inetrgrity of the

pons and portion of the midbrain

18

___ consistes of opthotonos

decerebrate

19

opsithotonos involves the

extension of the trunk and neck

20

Bilateral Midbrain Stage (reticular activating system)

respiratory pattern 

 

 

Central Neurogenic Hyperventilation, rarely cheynne stokes

21

Bilateral Midbrain Stage (reticular activating system)

pupillary size and rxn? 

 

Irregular, no pupillary constriction

22

Bilateral Midbrain Stage (reticular activating system) 

Oculocephalic and Oculovestibular Reflexes ??

Disconjugate eye reflexes - only CN6/ abduction present

23

Bilateral Midbrain Stage (reticular activating system)

Motor Responses at rest and to stimulation

Motionless, bilateral Decerebrate posturing upon stimulation

24

Central Neurogenic Hyperventilation suggests eihter (2)

1. bilateral midbrain stage (reticular activating system)

2. late 3rd nerve stage

25

Small pupils with small range of constriction

 

suggests either

bilateral or uniulateral dienephalic stage

26

No vestbibularoculo  reflexes suggests

bilateral pontine stage 

27

if ipsilateral eye can't move medially that suggests

late 3rd nerve stage (midbrain)

28

Can cause either Decorticate or Decerebrate response

late 3rd nerve stage

29

___ stage can cause Babinski’s sign on both sides

unilateral diencephalic

30

Bilateral Pontine Stage 

 

Motor Responses at rest and to stimulation

Motionless, Flaccid muscles

31

Motionless, bilateral Decerebrate posturing upon stimulation

Bilateral Midbrain Stage (reticular activating system)

32

Bilateral Midbrain Stage (reticular activating system) 

 

Motor Responses at rest and to stimulation

Motionless, bilateral Decerebrate posturing upon stimulation

33

no pupillary consitrction suggests

bilateral midbrain, bialteral pons, late 3rd nerve stage

34

Ipsilateral pupil widely dilated suggests

late 3rd nerve stage

35

ptosis suggests 

Late 3rd Nerve Stage (midbrain)

36

RR deep and regular --> central hyperventilation --> ___ lesion

midbrain

37

uncal herination puts pressure on the

midbrain