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EMG

NPTE: EMG abnormal action potentials & meanings (scorebuilders 2008)

Abnormal potentialsMeaning
Spontaneous: • Fibrillation potentials • LMN disease
Spontaneous: • Positive sharp • denervated muscle disease
Spontaneous: • Fasciculations • Irritation/degeneration of anterior horn cells • Nerve root compression or muscle spasm
Spontaneous: • Repetitive discharges • Lesion of anterior horn cells and peripheral nerves • Myopathies
Voluntary: • Polyphasic potentials • Myopathies, muscles or peripheral nerve involvement
Created by: liz124714
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