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