Table 1.
Nerve | Latency (ms) | Normal limit | Amplitude (μV/mV) | Normal limit | NCV (m/s) | Normal limit | |
---|---|---|---|---|---|---|---|
Sensory* | Median R | 1.89 | 28 | >20 | 55 | >50 | |
Median L | 1.72 | 25 | >20 | 56.3 | >50 | ||
Ulnar R | 1.83 | 0.94↓ | >20 | 51.9 | >50 | ||
Ulnar L | 1.69 | 6.6↓ | >20 | 56.2 | >50 | ||
Sural R | 1.31 | 6.6↓ | >18 | 42↓ | >45 | ||
Sural L | 1.35 | 3.0↓ | >18 | 48.1 | >45 | ||
Motor# | Median R | 8.06↑ | <4 | 6.7 | >4 | 51.3 | >50 |
Median L | 7.5↑ | <4 | 5.2 | >4 | 51 | >50 | |
Peroneal R | 10.1↑ | <6 | 0.21↓ | >4 | 41.6↓ | >45 | |
Peroneal L | 12.0↑ | <6 | 0.21↓ | >4 | 41.9↓ | >45 |
NCV, nerve conductive velocity.
Sensory nerve action potentials were antidromically obtained.
Compound motor action potentials of the median nerves and peroneal nerves were recorded from the abductor policis brevis and extensor digitorum brevis with the stimulating electrodes on wrist and ankle, respectively. Their motor conductive velocities were measured between the wrist and elbow and between the ankle and knee, respectively.
↑:Higher than normal limit.
↓:Lower than normal limit.