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Flashcards in Coma CC5 Deck (37)
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1
Q

cheynne stokes respiratiorn means ___ isnt working

A

diencephalon

2
Q

Pupillary Light Reaction

sympathetic probem.. eyes can't

A

dilate

3
Q

Pupillary light reflex

Parasympathetic problem then the eyes can't

 

A

constrict

4
Q

OculoVestibular reflexes: vestibular nucleus excitation causes excitations of contralateral

A

lateral rectus (via 6)

5
Q

OculoVestibular reflexes: vestibular nucleus excitation causes excitations of ipsilateral

A

medial rectus via 3

6
Q

Decorticate = lesion above the

A

 red nucleus of the midbrain

7
Q

Decorticate posture

what is flexed and adducted

A

arm, wrist, finger flexion, adduction of upper extremity

8
Q

decorticate posture what is extended

A

 leg extension, internal rotation, plantar flexion

9
Q

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

A

vestibulospinal

10
Q

with both decorticate and decerebrate you get

A

extension of  legs and planatr flexion

11
Q

sx of decerberate posturing 

A

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

12
Q

Bilateral Diencephalic Stage (thalamus)

respiration pattern?

A

Cheyenes- Stokes

13
Q

Bilateral Diencephalic Stage (thalamus)

 

pupillary size? 

A

Small pupils with small range of constriction

14
Q

Bilateral Diencephalic Stage (thalamus) 

eye reflexes?

A

Eye reflexes normal (because brainstem is unaffected)

15
Q

Bilateral Diencephalic Stage (thalamus)

 

Motor Responses at rest and to stimulation

A

Motionless, bilateral Decorticate posturing upon stimulation

16
Q

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

A

reticular formation or bilateral cortex

17
Q

occulovestibular reflexes tests the inetrgrity of the

A

pons and portion of the midbrain

18
Q

___ consistes of opthotonos

A

decerebrate

19
Q

opsithotonos involves the

A

extension of the trunk and neck

20
Q

Bilateral Midbrain Stage (reticular activating system)

respiratory pattern 

 

 

A

Central Neurogenic Hyperventilation, rarely cheynne stokes

21
Q

Bilateral Midbrain Stage (reticular activating system)

pupillary size and rxn? 

 

A

Irregular, no pupillary constriction

22
Q

Bilateral Midbrain Stage (reticular activating system) 

Oculocephalic and Oculovestibular Reflexes ??

A

Disconjugate eye reflexes - only CN6/ abduction present

23
Q

Bilateral Midbrain Stage (reticular activating system)

Motor Responses at rest and to stimulation

A

Motionless, bilateral Decerebrate posturing upon stimulation

24
Q

Central Neurogenic Hyperventilation suggests eihter (2)

A

1. bilateral midbrain stage (reticular activating system)

2. late 3rd nerve stage

25
Q

Small pupils with small range of constriction

 

suggests either

A

bilateral or uniulateral dienephalic stage

26
Q

No vestbibularoculo  reflexes suggests

A

bilateral pontine stage 

27
Q

if ipsilateral eye can't move medially that suggests

A

late 3rd nerve stage (midbrain)

28
Q

Can cause either Decorticate or Decerebrate response

A

late 3rd nerve stage

29
Q

___ stage can cause Babinski’s sign on both sides

A

unilateral diencephalic

30
Q

Bilateral Pontine Stage 

 

Motor Responses at rest and to stimulation

A

Motionless, Flaccid muscles

31
Q

Motionless, bilateral Decerebrate posturing upon stimulation

A

Bilateral Midbrain Stage (reticular activating system)

32
Q

Bilateral Midbrain Stage (reticular activating system) 

 

Motor Responses at rest and to stimulation

A

Motionless, bilateral Decerebrate posturing upon stimulation

33
Q

no pupillary consitrction suggests

A

bilateral midbrain, bialteral pons, late 3rd nerve stage

34
Q

Ipsilateral pupil widely dilated suggests

A

late 3rd nerve stage

35
Q

ptosis suggests 

A

Late 3rd Nerve Stage (midbrain)

36
Q

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

A

midbrain

37
Q

uncal herination puts pressure on the

A

midbrain