3.14 Ch. 12.3 Flashcards Preview

7303 Neuroanatomy > 3.14 Ch. 12.3 > Flashcards

Flashcards in 3.14 Ch. 12.3 Deck (25):
1

What does MG damage?

ACh receptors at the NMJ

2

What happens during MG?

repeated use of muscle leads to increasing weakness

3

What does botulism interfere with?

release of ACh from motor axon

4

What happens with botulism?

- produces acute, progressive weakness
- loss of stretch reflexes
- sensation remains intact

5

myopathy

disorder intrinsic to muscles

6

myopathy: sensation and autonomic function

- sensation intact
- autonomics intact

*because nervous system is not affected by myopathy

7

Later stages of myopaty

Coordination, muscle tone, and reflexes are unaffected until muscle atrophy becomes so severe that muscle activity cannot be elicited.

8

What are the benefits of using electrodiagnostic studies?

reveals pathologic location and are often diagnostic

9

nerve conduction studies can be used to differentiate among these:

- primarily myelinopathy and axonopathy processes
- UMN and LMN paresis
- mononeuropathy and polyneuropathy
- local conduction block and Wallerian degeneration

10

3 clinical signs of peripheral neuropathy are revealed in:

- ≥ 50 yo
- presence of 2-3 s/s

*correlate with highly electrodiagnostic evidence of peripheral neuropathy

11

3 clinical signs of peripheral neuropathy

- Absence of ankle jerk reflex despite facilitation
- Impaired vibration
- Impaired position sense of the great toe

12

evaluation of polyneuropathy: What increases along with severity of neuropathy?

reports of pins and needles sensations

13

evaluation of polyneuropathy: signs of damage result from

hypoactivity or hyperactivity of neurons

14

Important thing when evaluating for polyneuropathy

distinction between PNS and CNS dysfunction is vital**

15

What guides treatment decisions for polyneuropathy?

- sensory
- MMT
- EMG/NCV

16

Why is education so important with polyneuropathy?

prevent complications from the damage caused by
- lack of sensation
- disuse
- overuse

17

treatment for peripheral polyneuropathy (education)

- visually inspect areas daily for wounds
- proper foot care

18

treatment: interventions for edema

- elevation of limb
- compression bandaging
- e-stim

19

treatment of polyneuropathy: contractures prevented by

- prolonged stretching
- daily activities

20

endurance exercise after peripheral nerve crush injury

enhances sensory and motor recovery

21

resistance exercise after peripheral nerve crush injury

may delay functional recovery (or combo of resistance and endurance)

22

treatment for polyneuropathy: exercise

emphasize gradual strengthening and functional use of individual muscles and groups

23

orthoses for the treatment of polyneuropathies are used to

stabilize WB joints

24

orthoses prevent:

- sprains and strains
- drooping of forefoot during gait
- deformities from paresis, paralysis, and lack of sensation

25

drooping of forefoot during gait caused by

paresis or paralysis of tibialis anterior