Cerebellar dysfunction Flashcards

1
Q

what could cause cerebellar dysfunction

A

stroke ~5%
tumor
structural (chari malformation)
toxicity
immune mediated (MS)
trauma
infx or endocrine (hypothyroid)

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2
Q

what contains all axons that transmit info to and from cerebellum

A

Peduncles

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3
Q

what is the vestibulocerebellum role in mvmt

A

VOR
gaze + eye mvmt = nystagmus
posture + balance

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4
Q

what is the spinocerebellum role in mvmt

A

gaze + eye mvmt
postural tone (hypotonia/tremor)
balance + locomotion (ataxia)
coordination (dysmetria/dysdiado)

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5
Q

what is the cerebrocerebellum (neo) role in mvmt

A

complex, multi jt mvmt (dyssenergia)
motor planning (decomposition)
visually guided mvmt (dysmetria) (dysdiado)

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6
Q

explain motor coordination theory

A

primary function of cerebellum is to coordinate multi-jt for smooth & fluid mvmt

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7
Q

explain timer hypothesis theory

A

main site of temporal representation of mvmt (perceptual processing)

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8
Q

explain internal model theory

A

works via feedforward control when initiating mvmt

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9
Q

list some obvious clinical manifestation if someone has cerebellar dysfunction

A

ATAXIA
dysmetria (may worsen w inc/dec speed)
dysdiado
decomposition
lack of chekc or rebound during MMT
DTR pendular affect after reflex is elicited

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10
Q

what type of learning is most affected in ppl with cerebellar dysfunction

A

associative and procedural learning since most reliant on cerebellum

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11
Q

medical management for cerebellar dysfunction

A

no cure or pharma; rely mainly on PT

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12
Q

The international cooperative ataxia rating scale ICARS is socred from 0-100 with 0 indicating ____ ataxia and 100 indicating ____ ataxia

A

No signs of; severe

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13
Q

The scale of the assessment & rating of ataxia SARA is similar to ICARS but is quicker to admin.
It’s scored from 0-40 with 0 indicating ____ ataxia and 40 indicating ____ ataxia

A

No signs of; severe

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14
Q

the prognosis of recovery depends highly on _____ and ____

A

etiology & extent of lesion

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15
Q

since repetitive fatigue activity worsens posture control what type of practice is best?

A

distributed practice

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16
Q

low, submax, or max resistive exercises improves muscle fatigue?

A

submax

17
Q

should you challenge pt’s with cerebellar dysfunction or prevent muscle fatigue/overwork?

A

should challenge to promote plasticity

18
Q

what technique is utilized during PT for cerebellar dysfunction that is often not used with other disorders/disease

A

Compensation techniques
- decomposition, widen BOS, AD use, minimize distraction

19
Q

will weighting down a pts affected limb improve or worsen ataxia?

A

initially improves but then worsens as result of motor feedback that pt is not used to and affects dysmetria

20
Q

The cerebellum is integral in ______ multi-jt mvmt and ____ mvmt to changes in environment and learning new mvmt patterns

A

coordinating; adapting

21
Q

what is an important clinical factor to keep in mind during PT treatment

A

if impairments are expected to improve or not
*if not expected = compensation