Clinical EMG
3 important questions on Clinical EMG
Which methods are used EDx?
1. Nerve conduction studies
2. Needle electromyography
3. Experimental techniques:
- TMS
- Triple stimulation
- High-density surface EMG
- Troni (muscle fiber conduction velocity)
2. Needle electromyography
3. Experimental techniques:
- TMS
- Triple stimulation
- High-density surface EMG
- Troni (muscle fiber conduction velocity)
What can we measure with nerve conduction studies?
1. Motor nerves, with electrodes on target muscle
2. Sensory nerves, with electrodes on the skin
3. Proximal nerve segments with:
- H-reflexes
- F responses
4. Neuromuscular junction:
- repetitive nerve stimulation
- stimulated single fiber EMG
2. Sensory nerves, with electrodes on the skin
3. Proximal nerve segments with:
- H-reflexes
- F responses
4. Neuromuscular junction:
- repetitive nerve stimulation
- stimulated single fiber EMG
Which parameters can you derive from a CMAP or SNAP curve?
1. Amplitude
2. (Distal) latency
3. Nerve conduction velocity
4. Dispersion
2. (Distal) latency
3. Nerve conduction velocity
4. Dispersion
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