Table 3.
Values of a combination of two CMAPs: comparison with CMAP recorded from the upper TM.
| n = 35 | (CMAP-E) Combination |
(CMAP-B) TM + 2 cm |
P value | ||||
|---|---|---|---|---|---|---|---|
| Mean | SD | CoV | Mean | SD | CoV | ||
| onset latency (ms) | 2.7 | 0.5 | 0.19 | 2.6 | 0.4 | 0.15 | 0.36 |
| peak-to-peak amplitude (mV) | 18.5 | 6.7 | 0.36 | 14.4 | 4.9 | 0.34 | <0.01 |
| baseline-to-peak amplitude (mV) | 10.0 | 3.7 | 0.37 | 8.2 | 2.8 | 0.34 | 0.04 |
| duration (ms) | 13.0 | 1.3 | 0.1 | 13.1 | 1.3 | 0.1 | 0.87 |
| rise time (ms) | 2.0 | 0.4 | 0.2 | 2.1 | 0.4 | 0.19 | 0.36 |
CMAP, compound muscle action potential; CoV, coefficient of variation; SD, standard deviation; TM, trapezius muscle.