Table 2 Electrophysiological findings in upper limbs of three probands with CMTX
Case1 | Case2 | Case3 | ||
|---|---|---|---|---|
Median. L | ||||
Conduction velocity | M | 37 m/s(>45) | 58 m/s(>45) | 35 m/s(>45) |
S | 38 m/s(>45) | 50 m/s(>45) | NA | |
Amplitude | M | 9.6 mV(>5) | 5.1 mV(>5) | 2.9 mV(>5) |
S | 2.0 μV(>15) | 9.9 μV(>15) | NR | |
Latency | M | 4.4 ms(<3) | 3.6 ms(<3) | 5.8 ms(<3) |
Median. R | ||||
Conduction velocity | M | 27 m/s(>45) | 53 m/s(>45) | 35 m/s(>45) |
S | 41 m/s(>45) | 44 m/s(>45) | NA | |
Amplitude | M | 4.2 mV(>5) | 9.4 mV(>5) | 2.1 mV(>5) |
S | 2.9 μV(>15) | 19.8 μV(>15) | NR | |
Latency | M | 4.5 ms(<3) | 3.8 ms(<3) | 6.8 ms(<3) |
Ulnar. L | ||||
Conduction velocity | M | 37 m/s(>45) | 60 m/s(>45) | 36 m/s(>45) |
S | NA | 52 m/s(>45) | NA | |
Amplitude | M | 4.6 mV(>5) | 5.4 mV(>5) | 3.9 mV(>5) |
S | NR | 7.9 μV(>5) | NR | |
Latency | M | 3.6 ms(<3) | 2.4 ms(<3) | 5.6 ms(<3) |
Ulnar. R | ||||
VConduction velocity | M | 36 m/s(>45) | 57 m/s(>45) | 30 m/s(>45) |
S | 36 m/s(>45) | 48 m/s(>45) | NA | |
Amplitude | M | 2.7 mV(>5) | 5.7 mV(>5) | 4.0 mV(>5) |
S | 5.7 μV(>5) | 7.4 μV(>5) | NR | |
Latency | M | 3.5 ms(<3) | 2.8 ms(<3) | 5.2 ms(<3) |