Electromyography* comparing normal, neurogenic, and myopathic features
Electromyography* comparing normal, neurogenic, and myopathic features
1. At rest (spontaneous activity): a. fibrillations, b. positive sharp waves, c. fasciculation. 2. Slight effort (motor unit potentials): d. giant polyphasic, e. BSAPS (brief-small-abundant polyphasic). 3. Strong effort (interference pattern): f. full, g. reduced units, h. reduced amplitude.
* helpful in selecting denervated muscles in radiculopathies (myotomal), mononeuropathies (distal to lesion), generalized neuropathies (distal muscles), and myopathies
