C2-C4 Compartment Block Versus Block of Costagliola, in TEAC

C2-C4 compartment anesthetic block is performed by injecting levobupivacaine 0.375% 20 mL between the posterior face of the middle scalenus muscle, the anterior face of the posterior scalene muscle and the lower plane of the sternoscleidomastoid muscle.

Costagliola block is performed by injected by injecting levobupivacaine 0.375% 20 mL along the anterior and the posterior border of sternocleidomastoid muscle