Order Electroldignisis Discussion Assignment

Order Electroldignisis Discussion Assignment
Order Electroldignisis Discussion Assignment
The motor point of a completely denervated muscle will:
> HOW
Move deeper
Move proximally
Move distally
Move superficially
Not shift
REF: 8 – p. 35
Which of the following is not related to the carpal tunnel
syndrome?
BOOW>
Tinel’s sign
Hypothenar atrophy
Pain in the thumb
Myxedema
Bilaterality
REF: 22 – p. 116
In recovery after radial nerve suture at the elbow, which
of the following muscles will recover function last?
> UO
Extensor digitorum communis
Extensor pollicis brevis
Extensor carpi radialis
Extensor indicis proprius
Brachioradialis
REF: 8 – p. 331; REF: 1 – pp. 165-166
The most important electromyographic sign of regeneration in completely denervated muscle is:
Be Eke
Decrease in number of fibrillation potentials
Increased insertion activity
Appearance of motor unit action potentials during
voluntary contraction
Electrical silence
Absence of fasciculation potentials
REF: 6 – p. 331
79
80/ Electrodiagnosis
3.5.
3.6.
ais
3.8.
3.9.
With intact (in presence of) myelin sheath, the nerve
fiber will:
A. Conduct the impulse at high velocity
B. Conduct the impulse at low velocity
C. Conduct the impulse at the same velocity as the nonmyelinated nerve fiber does
D. Not conduct any impulse
E. None of the above
REF: 3 – p. 222
The sciatic nerve contains:
A. A and C fibers
B. A and B fibers
C. C and B fibers
D. A, B, and C fibers
E. None of the above
REF: 22 – p. 10 ;
Which type of fibers are myelinated ?
A. AandB
B. A and C
Cu Bands
Dia, Bye andiG.
E. None of the above
REF: 22 – p. 10
Which of the following factors influence nerve conduction
velocity ?
Age of patient
Temperature of the limb
Diameter of the nerve fiber
None of the above
All of the above
REF: 22 – pp. 10, 110-111
Se
motor unit consists of:
A single anterior horn cell and all the muscle fibers
which are innervated by its axon
A single anterior horn cell and a single muscle fiber
Numbers of anterior horn cells that innervate each
muscle
All of the above
None of the above
REF: 6 – p. 302
Ho b>Ob
Electrodiagnosis /81
The criteria of abnormality in an EMG are:
Bl ee O
Abnormal insertional activity
Occurrence of spontaneous electrical activities in
resting muscle
Presence of abnormalities of shape, size, numbers,
rate or rhythm of motor unit action potential
None of the above
All of the above
REF: 6 – p. 304
The fasciculation that has a Single action potential is
oat firing at the rate of:
> noob
1-30 per minute
1-30 per second
1-5 per minute
10-20 per second
None of the above
REF: 6 – p. 310
Bizarre high frequency discharge differs from myotonic
discharge in that:
A.
bow A
Bizarre high frequency discharge does not wax and
wane
Myotonic discharge does not wax and wane
They cannot be differentiated
Bizarre high frequency discharge has typical
“Divebomber” sound
None of the above
REF: 6 – p. 308
N.C.V. of the peroneal nerve in the leg that is 38°C:
colder than normal will be:
Fao
A
Bi,
C;
D
E
Faster
Slower
Not obtainable
Same as normal temperature
None of the above
REF: 22 – p. 110; REF: 3 – p. 237
In polymyositis, one can find:
Normal nerve conduction velocity
Fasciculation
Large polyphasic motor unit action potential
Delayed sensory distal latency
None of the above
REF: 3- p. 248
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