Table 2 Nerve conduction studies of the patients with MME mutations
Family A II:1 | Family B II:1 | Normal values | |||||||
|---|---|---|---|---|---|---|---|---|---|
Motor nerve | MNCV (m/s) | dL (ms) | CMAP (mV) | MNCV (m/s) | dL (ms) | CMAP (mV) | MNCV (m/s) | dL (ms) | CMAP (mV) |
L Median | 43.5 | 4.1 | 2.5 | 52.5 | 3.08 | 9.1 | > 50 | < 4 | > 5 |
R Median | 43.7 | 4.1 | 3.7 | 58.3 | 3.9 | 5.2 | |||
L Ulnar | 51.2 | 2.8 | 2.8 | 51.7 | 2.85 | 5.0 | > 50 | < 3 | > 4 |
R Ulnar | 42.3 | 3.0 | 1.8 | 55.2 | 2.98 | 6.1 | |||
L Peroneal | NR | NR | NR | 43.5 | 4.27 | 1.26 | > 40 | < 5.3 | > 2 |
R Peroneal | NR | NR | NR | 38.6 | 7.2 | 0.22 | |||
L Tibial | NR | NR | NR | 36.7 | 6.17 | 0.21 | > 40 | < 5 | > 3.5 |
R Tibial | NR | NR | NR | NR | NR | NR | |||
Sensory nerve | SNCV (m/s) | SNAP (µV) | SNCV (m/s) | SNAP (µV) | SNCV (m/s) | SNAP (µV) | |||
L Median | 38.5 | 38.5 | 55.4 | 7.0 | > 50 | > 5 | |||
R Median | 36.1 | 49.9 | 47.3 | 16.8 | |||||
L Ulnar | 49.3 | 95.3 | 46.0 | 14.5 | > 50 | > 3 | |||
R Ulnar | 40.0 | 84.3 | 48.3 | 25.3 | |||||
L Sural | 25.0 | 41.5 | 57.1 | 0.45 | > 40 | > 1 | |||
R Sural | 20.5 | 13.6 | 61.0 | 6.3 | |||||