Table 1.
Motor nerve conduction studies
| Site | NR | Onset (ms) | Normal onset (ms) | O-P amp (mV) | Normal O-P amp | Site 1 | Site 2 | Delta-O (ms) | Dist (cm) | Vel (m/s) | Normal Vel (m/s) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Left median motor (Abd Poll Brev), 31°C | |||||||||||
| Wrist | 3.0 | <3.6 | 11.5 | >4 | Pron Ter | Wrist | 4.7 | 29.0 | 62 | >50.0 | |
| Pron Ter | 7.7 | 11.4 | |||||||||
| Left radial (surface) motor (Ext Ind Prop), 31.1°C | |||||||||||
| Forearm | 3.6 | 2.2 | Sp Groove | Forearm | 4.4 | 20.5 | 47 | ||||
| Sp Groove | 8.0 | 2.1 | |||||||||
| Right radial (surface) motor (Ext Ind Prop), 31°C | |||||||||||
| Forearm | 2.7 | 4.8 | Sp Groove | Forearm | 2.8 | 18.0 | 64 | ||||
| Sp Groove | 5.5 | 4.4 | Sp Groove | Sp Groove | 0.0 | 0.0 | |||||
| Left ulnar segment motor (Abd Dig Minimi), 30.7°C | |||||||||||
| Wrist | 3.1 | <3.6 | 9.2 | >3 | Abv FCU | Wrist | 3.8 | 23.0 | 61 | >50 | |
| Abv FCU | 6.9 | 9.1 | Abv Uln Grv | Abv FCU | 2.0 | 12.0 | 60 | >50 | |||
| Abv Uln Grv | 8.9 | 8.5 | |||||||||
NR nerve, O-P onset to peak, Dist distance, Vel velocity, Abd Poll Brev abductor pollicis brevis, Ext Ind Prop extensor indicis proprius, Abd Dig Minimi abductor digiti minimi, Pron Ter pronator teres, Sp Groove spiral groove, Abv FCU above flexor carpi ulnaris, Abv Uln Grv above ulnar groove