Improvement in electrodiagnostic measurements in patients with carpal tunnel syndrome who had symptom relief
| Electrodiagnostic variable, with normal result | Before steroid treatment (n=46) | One year later (n=46) |
|---|---|---|
| Values are mean (SD). | ||
| *p < 0.05. | ||
| CMAP, compound muscle action potential; MDL, median distal motor latency; SNAP, median sensory nerve action potential; SNCV, median sensory nerve conduction velocity; W–P, wrist–palm conduction time. | ||
| MDL (ms), <4.7 | 5.25 (0.66) | 4.92 (0.91)* |
| CMAP (mv), >6.5 | 10.77 (2.21) | 10.6 (1.92) |
| SNCV (m/s), >45 | 41.44 (4.45) | 45.84 (4.7)* |
| W–P (ms), <2.0 | 2.49 (0.37) | 2.20 (0.36)* |
| SNAP (μv), >15 | 24.78 (12.77) | 26.08 (11.37)* |