Online free electrotherapy MCQs
1. What is the clinical manifestation of conduction block?A) Weakness
B) There is no clinical manifestation
C) Rash
D) Atrophy
2. In myopathies, the motor unit action potentials (MUAPs) may demonstrate all of the following except:
A) Low amplitude
B) Long duration
C) Polyphasicity
D) Early recruitment
3. As opposed to acquired neuropathies, congenital neuropathies usually:
A) Have proximal more than distal slowing
B) Have uniform slowing throughout the nerve
C) Have segmental slowing throughout the nerve
D) Are distal
4. In electrodiagnostic testing, a cold limb (less than 32°C in the arms or 30°C in the legs) could lead to:
A) Decreased latency of compound motor action potentials (CMAPs)
B) Increased amplitude of sensory nerve action potentials (SNAPs)
C) Increased conduction velocity of SNAPs
D) Decreased amplitude of CMAPs
5. On needle electromyographic (EMG) testing, normal muscles at rest:
A) Are electrically silent
B) Will spontaneously discharge potentials with an initial negative deflection
C) Will spontaneously discharge potentials with an initial positive deflection
D) Will discharge potentials only if the muscle belly is tapped
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