Quiz 3 - weakness evaluation

Question 1

contrast weakness in proximal vs distal muscles

Answer 1

proximal - more likely to be a myopathy

distal - more likely to be a generalized polyneuropathy

Question 2

if limb weakness is associated with lower facial weakness on the same side…..

Answer 2

lesion above the brainstem

Question 3

facial weakness contralateral to limb weakness

Answer 3

brainstem lesion

Question 4

if repeated activity tends to worsen the symptoms…

Answer 4

myesthenia gravis

Question 5

movements or postures bring on weakness….

Answer 5

orthopedic or mechanical problem

Question 6

four origins of weakness

Answer 6

• upper motor neuron
• lower motor neuron
• NMJ
• muscle itself

Question 7

PE of upper motor neuron diseases

Answer 7

• broad areas of body
• heightened deep tendon reflexes
• minimal atrophy
• minimal fasciculations
• possible spastic tone “clasped knife”

Question 8

PE of lower motor neuron diseases

Answer 8

• decreased tone
• decreased reflexes
• atrophy
• fasciculations
• localization

Question 9

PE of neuromuscular disease

Answer 9

• fluctuating strength based on muscle use

Question 10

PE of myopathy

Answer 10

• proximal and symmetrical
• no atrophy
• normal reflexes at first

Question 11

muscle disease often results in increased….

Answer 11

• creatinine kinase

Question 12

antibodies against ACh receptors can indicate….

Answer 12

NMJ disease

Question 13

most sensitive test for lower motor neuron damage

Answer 13

needle electromyography