Analgesic Efficacy of an Intermediate CPB in Neck Surgeries.

"The patient's head was rested on a pillow and turned to the opposite side. A linear probe with higher frequencies was placed transversely over the midpoint of the SCM muscle. The carotid artery was identified and traced upwards to its bifurcation. the probe was then moved laterally to identify the tapering posterolateral end of the SCM muscle. Via an in-plane technique, a 22-gauge, 50 mm needle was advanced underneath the investing fascia of SCM muscle and above the interscalene groove until the pop on piercing the investing fascia was felt."