Table 1.
Sensory and motor nerve conduction studies of three patients and one healthy member of the family
| Patient (age in years) |
BAB3724 (30) |
BAB5658 (28)a |
BAB4149 (24) |
BAB4152 (17) |
|||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| II-2 |
II-2 |
II-4 |
II-7 |
Normal values |
|||||||||||
| Motor NCSs | dL (ms) | V (m/s) | Amp (mV) |
dL (ms) | V (m/s) | Amp (mV) | dL (ms) | V (m/s) | Amp (mV) |
dL (ms) | V (m/s) | Amp (mV) | dL (ms) | CV (m/s) |
Amp (mV) |
| R axillary | 14.5 | N/A | 5.8 | N/A | N/A | N/A | 15.2 | N/A | 0.2 | N/A | N/A | N/A | <6.0 | >50 | >4.0 |
| R musculocutaneus | 7.1 | N/A | 0.9 | N/A | N/A | N/A | 7.2 | N/A | 1.5 | N/A | N/A | N/A | <6.0 | >50 | >4.0 |
| R median | NR | NR | NR | 4.7 | 56 | 12.9/11.1 | NR | NR | NR | 2.8 | 58 | 6.5/5.6 | <4.0 | >50 | 5.0 |
| R ulnar | NR | NR | NR | 3.2 | 65/64 | 10.8/9.2/9.2 | NR | NR | NR | 2.2 | 58/73 | 5.1/4.8/4.8 | <3.5 | >50 | 5.0 |
| R common peroneal | NR | NR | NR | 3.2 | 47 | 6.1/5.4 | NR | NR | NR | NRb | NRb | NRb | <4.5 | >40 | 2.0 |
| R tibialis | NR | NR | NR | 4.7 | 49 | 11.2/10.3 | NR | NR | NR | 5.5 | 40 | 0.8/0.4 | <5.0 | >40 | 4.0 |
| Sensory NCSs | dL (ms) | V (m/s) |
Amp
(μV) |
dL (ms) | V (m/s) | Amp (μV) | dL (ms) | V (m/s) |
Amp
(μV) |
dL (ms) | V (m/s) | Amp (μV) | dL (ms) |
CV
(m/s) |
Amp
(μV) |
|
| |||||||||||||||
| R median | NR | NR | NR | 2.7 | 54 | 17.0 | NR | NR | NR | 2.8 | 67 | 18 | <3.2 | >45 | >12.0 |
| R ulnar | NR | NR | NR | 2.2 | 52 | 9.4 | NR | NR | NR | 2.8 | 55 | 16 | <3.0 | >45 | >8.0 |
| R radial | NR | NR | NR | N/A | N/A | N/A | NR | NR | NR | N/A | N/A | N/A | <3.0 | >50 | >12 |
| R superficial peroneal | NR | NR | NR | 2.3 | 53 | 8.6 | NR | NR | NR | 3.0 | 42 | 5.7 | <3.5 | >40 | >5.0 |
| L superficial peroneal | N/A | N/A | N/A | 2.3 | 53 | 4.6 | N/A | N/A | N/A | N/A | N/A | N/A | <3.5 | >40 | >5.0 |
| R sural | NR | NR | NR | 2.7 | 53 | 20.8 | NR | NR | NR | 3.7 | 45 | 12 | <3.8 | >40 | >10.0 |
| L sural | N/A | N/A | N/A | 2.7 | 52 | 23 | N/A | N/A | N/A | N/A | N/A | N/A | <3.5 | >40 | >5.0 |
Amp, amplitude; CV, conduction velocity; dL, distal latency; L, left; N/A, not available; NCSs, nerve conduction studies; NR, not recordable; R, right.
a
Healthy member.
b
Recorded from extensor digitorum brevis and tibialis anterior muscles.