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 12

Procedure for supraclavicular brachial plexus hydrodissection: sonoanatomy. Sonographic view of the needle approaching the supraclavicular brachial plexus. AS: anterior scalene, EJV: external jugular vein, MS: middle scalene, OMH: omohyoid, SA: serratus anterior, SCA: subclavian artery, SCBP: supraclavicular brachial plexus, SCN: supraclavicular nerve, TCA: transverse cervical artery, and UT: upper trapezius.