Electroneurographic findings in two patients with hereditary neuropathy with liability to pressure palsies (HNPP)
| Motor and sensory nerve conduction | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Ulnar nerve | Median nerve | Peroneal nerve | |||||||
| P | M | P | M | P | M | ||||
| MCV (m/sec) | |||||||||
| R | 40 | 40 | 53 | 60 | — | 27 | |||
| L | 39 | 48 | 52 | 44 | 32 | 31 | |||
| N | (>52) | (>52) | (>48) | ||||||
| DL (m/sec) | |||||||||
| R | 3.5 | 2.8 | 4.5 | 4 | — | — | |||
| L | 3.2 | 3 | 3.7 | 3.8 | — | — | |||
| SCV (m/sec) | |||||||||
| R | 35 | 43 | 27 | 33 | — | — | |||
| L | 38 | 37 | 37 | 34 | — | — | |||
| SAP amplitude (μV) | |||||||||
| R | 2 | 4 | 2 | 2 | — | — | |||
| L | 3 | 2 | 3 | 3 | — | — | |||
P, proband; M, mother; R, right; L, left; N, normal value; MCV, motor conduction velocity; DL, distal latency; SCV, sensory conduction velocity; SAP, sensory action potential; —, not done.