Table 1.
Electrophysiological data
| Examined nerves | Motor/sensory distal latency | Distal amplitude | Conduction velocity | F wave | Damage pattern |
|---|---|---|---|---|---|
| Left deep peroneal nerve |
7.1 m (normal values less than 4.5 ms) |
0.9 mV (normal values greater than 2.5 mV) |
34.6 m/s (normal values greater than 40 m/s) |
/ | Mixed (distal and proximal demyelination and axonal motor damage) |
| Right posterior tibial nerve |
4.2 ms (normal values less than 5.5 ms) |
4.2 mV (normal values greater than 5 mV) |
33.6 m/s (normal values greater than 40 m/s) |
58 ms; poorly persistent (normal value: minimal latency of less than 56 ms) |
Proximal demyelination and altered F wave |
| Right sural nerve | 2.5 ms |
1.5 mV (normal values greater than 5 µV) |
42.7 m/s (normal values greater than 40 m/s) |
/ | Axonal damage |
| Left superficial peroneal nerve | Not evoked |
Not evoked (normal values greater than 5 µV) |
Not evoked (normal values greater than 40 m/s) |
/ | Axonal damage |
| Right median nerve |
8.3 ms (normal values less than 4.2 ms) |
1.1 mV (normal values greater than 5 mV) |
Conduction block between elbow and wrist (normal values between elbow and wrist greater than 50 m/s) |
Not evoked (normal value: minimal latency of less than 32 ms) |
Mixed (proximal and distal demyelination with conduction block and axonal motor damage) |