| Parameters |
SCB (n = 40) |
AXB (n = 40) |
Test | P-Value |
|---|---|---|---|---|
| Imaging time, mean (SD), sec | 58.99 (35.6) | 65.8 (41.6) | 0.787 | 0.433 |
| Needling time, mean (SD), sec | 292 (117.0) | 477.5 (145.5) | 6.278 | <0.001* |
| Performance time, mean (SD), min | 6.1 (2.4) | 9.5 (3.2) | 5.376 | <0.001* |
| Onset time, mean (SD), min | 19.3 (7.3) | 18.9 (5.8) | 0.271 | 0.786 |
| Total anesthesia-related time, min | 24.2 (6.2) | 27.6 (5.5) | 2.595 | 0.011* |
| Surgical anesthesia, % (Success rate) | 38 (95.0%) | 39 (97.5%) | 0.346 | 0.556 |
| No. of passes | 2.15 (1.35) | 6.19 (2.24) | 9.770 | <0.001* |
| Paresthesia, n (%) | 3 (10) | 4 (15) | 0.157 | 0.692 |
| Vascular puncture, n (%) | 2 (2.5) | 2 (2.5) | 0.000 | 1.000 |
| Horner syndrome, n (%) | 13 (32.5) | 0 (0.0%) | 15.522 | <0.001* |
| Pneumothorax | 4 (10.0%) | 0 (0.0%) | 4.211 | 0.040* |
| Motor weakness | 0 (0.0%) | 0 (0.0%) | NA | NA |
| Procedural related pain | 0 (0.0%) | 0 (0.0%) | NA | NA |