Research Article

Transition from Deep Regional Blocks toward Deep Nerve Hydrodissection in the Upper Body and Torso: Method Description and Results from a Retrospective Chart Review of the Analgesic Effect of 5% Dextrose Water as the Primary Hydrodissection Injectate to Enhance Safety

Figure 17

Procedure for cervical nerve root hydrodissection: sonoanatomy. Ant: anterior, Post: posterior, AS: anterior scalene, MS: middle scalene, PS: posterior scalene, CA: carotid artery, IJV: internal jugular vein, EJV: external jugular vein, VA: vertebral artery, SCM: sternocleidomastoid, VN: vagus nerve, LCa: Longus Capitis, and LCo: longus colli. The left side shows a B-mode image and the right side shows a power Doppler view.