Neuromuscular

REPETITIVE RESPONSE TO SINGLE STIMULATION


from M. Al-Lozi
Two CMAPs after single stimulus
  • Second CMAP (Arrow)
    • Smaller than the first
    • Follows first CMAP with consistent latency: Independent of site of nerve stimulation
  • Due to prolonged action of acetylcholine at neuromuscular junctions
  • Occurs with



from M. Al-Lozi
Repetitive (Second) response to individual stimuli (Arrows)
  Amplitude of 2nd response is progressively reduced after repetitive nerve stimulation (10 Hz above)
  No decrement in primary CMAP amplitude

from M. Al-Lozi

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6/8/2020