Minimum Effective Volume of Lidocaine for Ultrasound-Guided Infraclavicular Block

Abstract

For single-injection ultrasound-guided ICB, the MEV(90) of lidocaine 1.5% with epinephrine 5 μg/mL is 35 mL. Further dose-finding studies are required for other concentrations of lidocaine, other local anesthetic agents as well as techniques involving multiple injections, a more medial approach to ICB, or precise location of all 3 cords of the brachial plexus.