Table 2.
Detailed electrophysiological findings
| ATTRv | CIAP | p value | ||
|---|---|---|---|---|
| Median nerve | SAP (μV) | 3.2 ± 2 | 17 ± 13.3 | p < 0.001 |
| SNCV (m/s) | 44.2 ± 8.2 | 43.6 ± 7.5 | p = 0.852 | |
| DML (ms) | 5 ± 1.3 | 4.6 ± 1.5 | p = 0.340 | |
| dCMAP (mV) | 2.9 ± 2.6 | 8.6 ± 3.4 | p < 0.001 | |
| pCMAP (mV) | 2.6 ± 2.4 | 7.9 ± 3.4 | p < 0.001 | |
| MNCV (m/s) | 44.2 ± 6.3 | 45.1 ± 8.4 | p = 0.108 | |
| Ulnar nerve | SAP (μV) | 4 ± 2.7 | 15.4 ± 12.3 | p < 0.001 |
| SNCV (m/s) | 47.6 ± 5.8 | 46 ± 7.6 | p = 0.544 | |
| DML (ms) | 3.3 ± 0.8 | 3.2 ± 0.8 | p = 0.683 | |
| dCMAP (mV) | 5.4 ± 3.7 | 9.5 ± 3.8 | p < 0.001 | |
| p1CMAP (mV) | 5.1 ± 3.2 | 8.7 ± 3.6 | p < 0.001 | |
| p2CMAP (mV) | 5 ± 2.9 | 8.1 ± 3.5 | p = 0.001 | |
| MNCV1 (m/s) | 49.8 ± 8 | 51.8 ± 7.7 | p = 0.304 | |
| MNCV2 (m/s) | 39.7 ± 9.2 | 43.9 ± 7 | p = 0.042 | |
| Tibial nerve | DML (ms) | 5 ± 1.5 | 5.6 ± 1.5 | p = 0.165 |
| dCMAP (mV) | 2.3 ± 3 | 5.2 ± 5.2 | p = 0.022 | |
| pCMAP (mV) | 1 ± 2.6 | 3.9 ± 4.4 | p = 0.291 | |
| MNCV (m/s) | 37.9 ± 3.9 | 36.7 ± 5.9 | p = 0.621 | |
| Peroneal nerve | DML (ms) | 3.8 ± 1 | 5.0 ± 1.9 | p = 0.024 |
| dCMAP (mV) | 2.0 ± 1.9 | 4.4 ± 3.8 | p = 0.006 | |
| pCMAP (mV) | 1.9 ± 2.1 | 3.8 ± 3.3 | p = 0.026 | |
| MNCV (m/s) | 39.6 ± 11.7 | 38.7 ± 7.2 | p = 0.747 | |
| Sural nerve | SAP (μV) | 3.2 ± 1.8 | 3.9 ± 2.8 | p = 0.460 |
| SNCV (m/s) | 45.4 ± 3.3 | 46.6 ± 7.1 | p = 0.523 |
p values marked with bold indicate a statistically significant difference between the groups
SAP sensory action potential, SNCV sensory nerve conduction velocity, DML distal motor latency, (d/p)CMAP(distal/proximal) compound motor action potential, MNCV motor nerve conduction velocity