Interscalene Block Versus Supraclavicular Block for Shoulder Surgery

Ultrasound guided brachial plexus block injecting 20 mL of 0.5% levobupivacaine with 5 micrograms of epinephrine per mL in the interscalene groove, under the prevertebral fascia.

"Ultrasound guided brachial plexus injecting 20 mL of 0.5% levobupivacaine with 5 micrograms of epinephrine per mL (3 mL in the corner pocket followed by 17 mL posterolateral to the brachial plexus)."