Spread of local anesthetic solution in the erector spinae plane block

The erector spinae plane (ESP) block, with local anesthetic injected deep to the erector spinae muscle, has been reported to be able to block the dorsal and ventral rami of the thoracic spinal nerves [1,2]. Furthermore, the ESP block has been recently reported to be able to block the sympathetic nerve fibers [3]. However, the mechanism of sympathetic block is unknown. We investigated the spread of local anesthetic solution in the ESP block.
Source: Journal of Clinical Anesthesia - Category: Anesthesiology Authors: Tags: Correspondence Source Type: research