Table 2 Comparison of bilateral nerve electromyography in typical CIDP, DADS and LSS.
Typical CIDP (n = 64) | DADS (n = 12) | LSS (n = 10) | P value | ||||
|---|---|---|---|---|---|---|---|
Median | Q1–Q3 | Median | Q1–Q3 | Median | Q1–Q3 | ||
Median nerve | |||||||
MCV (m/s) | 42.80 | 28.90–53.15 | 45.50 | 36.90–46.00 | 46.05 | 45.43–55.15 | 0.175 |
CMAP (mV) | 4.30 | 2.28–7.20 | 7.20 | 3.60–9.50 | 7.45 | 6.00–9.03 | 0.016* |
F-Lat (ms) | 35.70 | 30.60–49.55 | 32.20 | 28.75–35.45 | 33.90 | 32.68–34.63 | 0.256 |
SCV (m/s) | 51.00 | 43.00–61.20 | 55.50 | 50.50–61.95 | 40.25 | 34.50–44.13 | 0.004#, 0.001& |
SNAP (uV) | 14.20 | 10.83–23.10 | 18.00 | 14.65–36.25 | 13.45 | 11.38–15.60 | 0.075 |
Ulnar nerve | |||||||
MCV (m/s) | 43.50 | 33.33–58.80 | 44.55 | 34.10–47.43 | 43.90 | 42.98–46.58 | 0.852 |
CMAP (mV) | 5.40 | 3.16–7.65 | 5.00 | 4.43–11.75 | 9.05 | 6.63–10.78 | 0.072 |
F-Lat (ms) | 33.70 | 28.85–42.08 | 33.60 | 32.08–41.78 | 34.75 | 33.60–37.70 | 0.638 |
SCV (m/s) | 56.00 | 44.25–61.25 | 55.30 | 46.50–58.20 | 41.85 | 33.43–42.70 | 0.000#,0.007& |
SNAP (uV) | 15.00 | 9.15–22.05 | 13.00 | 12.70–35.05 | 10.15 | 8.10–12.60 | 0.105 |
Radial nerve | |||||||
SCV (m/s) | 56.60 | 44.38–68.68 | 55.30 | 50.90–69.00 | 42.65 | 38.63–52.53 | 0.040# |
SNAP (uV) | 14.20 | 10.83–23.10 | 14.10 | 13.20–31.70 | 16.05 | 15.30–22.33 | 0.447 |
Tibial nerve | |||||||
CMAP (mV) | 2.45 | 0.69–11.28 | 9.25 | 0.50–12.15 | 10.70 | 6.75–14.15 | 0.022# |
F-Lat (ms) | 56.00 | 50.00–70.40 | 63.95 | 62.48–68.85 | 57.90 | 55.50–59.00 | 0.038* |
Peroneal nerve | |||||||
MCV (m/s) | 40.00 | 31.85–42.98 | 34.40 | 24.55–36.03 | 36.20 | 35.00–36.85 | 0.140 |
CMAP (mV) | 2.35 | 0.26–4.18 | 4.75 | 0.23–5.13 | 4.35 | 3.28–13.50 | 0.012# |
Sural nerve | |||||||
SCV (m/s) | 45.00 | 38.00–51.90 | 44.00 | 41.00–61.30 | 37.15 | 36.30–43.58 | 0.194 |
SNAP (uV) | 10.50 | 7.20–14.80 | 3.10 | 3.00–21.90 | 13.35 | 10.75–13.93 | 0.326 |
