Dose-Finding Study: MEV90 for Local Anesthetic in Interscalene Block for Supraclavicular Nerves Block

This study aims to determine the minimum effective volume (MEV90) of local anesthetic required to achieve sensory block of the supraclavicular nerves when performing a single-shot ultrasound-guided interscalene brachial plexus block (ISB). These nerves provide sensation to the skin over the clavicle and shoulder and are often involved in surgeries such as shoulder arthroscopy and clavicle repair.

NCT Number	NCT07338916
Lead Sponsor	Hospital del Trabajador de Santiago
Conditions	Brachial Plexus Blockade, Shoulder Surgery, Superficial Cervical Plexus Block
Enrollment	55 participants
Start Date	2026-04
Primary Completion	2026-11 (estimated)
Study Completion	2026-12 (estimated)
Updated on ClinicalTrials.gov	2026-04-08