Landmarks & patient position

Patient positioning: Best with the patient in the supine or semi-sitting position, head turned slightly away from the side to be blocked to facilitate access.

External landmarks: Middle point of the sternocleidomastoid muscle between mastoid process and clavicle.

Ideal patient positioning for an ultrasound-guided superficial cervical plexus block.

Ideal patient positioning for an ultrasound-guided intermediate, and superficial cervical plexus block.