Muscle relaxants | | − | + | | | + | + | | | | + |
Days after withdrawal of muscle relaxant | | – | 6 | 28 | 66 | 0 | 2 | 13 | 32 | 150 | 5 |
| | | | | | | | | | | |
Conduction velocity (m/s)
| | | | | | | | | | | |
Median motor | 40–50 | 43 | 50 | 52 | 40.5 | NR | 36.5 | 52.5 | 55 | 55 | 58 |
Median sensory | 45–55 | 53 | 45.5 | 54.5 | 51 | 46 | 41 | 42 | 46 | 52 | 50 |
Ulnar motor | 40–50 | 45.5 | 52 | 40.5 | NR | | | | 46 | | 48 |
Peroneal motor | 40–50 | 50 | 42.5 | 50 | | | | | | | |
Suralis | 45–55 | | 46 | | | | | | | | |
| | | | | | | | | | | |
Amplitude
| | | | | | | | | | | |
Median motor (mV) | >6 | 4.8 | 0.15 | 3.1 | 5.7 | NR | 0.25 | 3.5 | 1.14 | 4.7 | 6.4 |
Median sensory (μV) | >10 | 7.5 | 0.9 | 0.07 | 1.75 | 25 | 32 | 1.65 | 0.53 | 4.6 | 14 |
Ulnar motor (mV) | >3 | 1.2 | 0.37 | 0.08 | NR | | | | 34 | | 8 |
Peroneal motor (mV) | >5.8 | 4.2 | 0.8 | 1 | | | | | | | |
Suralis (μV) | >6 | | | | | | | | | | |
| | | | | | | | | | | |
Distal latency (ms)
| | | | | | | | | | | |
Median motor | <3.5 | 3 | 4.1 | 2.8 | 2.9 | NR | 3.1 | 1.9 | 1.8 | 1.4 | 2.5 |
Ulnar motor | <3.5 | 2.6 | 7.3 | 4.7 | NR | | | 3 | 3.3 | 1.9 | 2 |
Peroneal | <3.5 | | | | | | | | | | |
| | | | | | | | | | | |
EMG
| | Fibrillation potentials | No recruitment | Reduced recruitment | Reinnervation | Fibrillation potentials | Polyphasic motor unit potentials | Small and polyphasic motor unit potentials | Small and polyphasic motor unit potentials | Normal | Polyphasic motor unit action potentials with early recruitment |
| | No recruitment | | | | No recruitment | |
NR, no response. |