Table.
Results of Nerve Conduction Studies.
| Motor nerve | Sensory nerve | |||||||
|---|---|---|---|---|---|---|---|---|
| Distal latency (ms) |
Conduction velocity (m/s) |
CMAP (mV) |
F-wave latency (ms) |
Conduction velocity (m/s) |
SNAP (μV) |
|||
| First examination (at 71 years of age) | ||||||||
| L. Median nerve | 4.7 (<4.5) | 49 (>48) | 4.9 (>5.0) | 28.3 (<31.4) | 40 (>43) | 3 (>11.3) | ||
| L. Ulnar nerve | 3.0 (<3.6) | 52 (>46) | 8.2 (>4.7) | 27.8 (<31.7) | 50 (>40) | 1 (>8.8) | ||
| L. Superficial radial nerve | 50 (>48) | 4 (>14.3) | ||||||
| L. Tibial nerve | 3.9 (<5.9) | 40 (>36) | 9.1 (>5.6) | 46.9 (<56.8) | ||||
| L. Sural nerve | 45 (>37) | 2 (>3.4) | ||||||
| Final examination (at 74 years of age) | ||||||||
| L. Median nerve | 4.4 (<4.5) | 45 (>48) | 3.9 (>5.0) | 28.3 (<31.4) | 41 (>43) | 3 (>11.3) | ||
| L. Ulnar nerve | 3.1 (<3.6) | 58 (>46) | 7.2 (>4.7) | 27.1 (<31.7) | 39 (>40) | 2 (>8.8) | ||
| L. Superficial radial nerve | 52 (>48) | 6 (>14.3) | ||||||
| L. Tibial nerve | 4.5 (<5.9) | 37 (>36) | 7.6 (>5.6) | 44.3 (<56.8) | ||||
| L. Sural nerve | 51 (>37) | 2 (>3.4) | ||||||
All studies were performed in the left extremities (L.).
CMAP: compound muscle action potential
All sensory studies were antidromically measured.
Abnormal values are indicated with underline. Normal limits are indicated in parentheses (our laboratory data).