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ELECTROMYOGRAPHY
CAUSES: DENERVATION or IRRITABLE MYOPATHY
M. Al-Lozi
SPONTANEOUS ACTIVITY
Positive sharp waves:
Long potentials (*)
Initial: Positive (Down) wave
Followed by: Wide negative wave
Fibrillations:
Brief potentials (Arrows)
Initial: Positive (Down) wave
Followed by: Negative wave
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Denervated muscle fibers
10/16/2023