| 0.5% Bupivacaine volume (ml) | Sodium bicarbonate volume (ml) | Lidocaine + Adrenaline volume (ml) | Dexamethasone concentration (mg/ml) |
Average volume/concentration | 12.23 ± 2.90 | 0.071 ± 0.01 | 7.86 ± 2.22 | 0.49 ± 0.11 |
Motor block onset p-value | 0.121 | 0.218 | 0.915 | 0.045 |
Sensory block onset p-value | 0.160 | 0.889 | 0.847 | 0.185 |
Post block analgesia p-value | 0.172 | 0.758 | 0.059 | 0.419 |