Motor neurone disease (MND): electromyogram (EMG)
Written and reviewed by Dr Ibrahim Imam, Consultant Neurologist. Last reviewed .
Motor neurone disease (MND): electromyogram (EMG). There are widespread fasciculations and fibrillations. Fully referenced neurology checklist.
Acute denervation
- There are widespread fasciculations and fibrillations
- Observation for up to 90 seconds is required to record fasciculations
- The waveform is indistinguishable from benign fasciculations
Other features
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References
- Mills KR. The basics of electromyography. JNNP 2005; 76(Suppl II):ii32-ii35.
- Mills KR. Detecting fasciculations in amyotrophic lateral sclerosis: duration of observation required. JNNP 2011; 82:549-551.
- Mills KR. Characteristics of fasciculations in amyotrophic lateral sclerosis and the benign fasciculation syndrome. Brain 2010; 133:3458-3469.
- Isak B, Tankisi H, Johnsen B, et al. Involvement of distal sensory nerves in amyotrophic lateral sclerosis. Muscle Nerve 2016; 54:1086-1092.
- Martins MP, de Lima FD, Bernardes Leoni T, et al. Laryngeal electromyography in amyotrophic lateral sclerosis. JNNP 2020 (Epub ahead of print).
