Comparison of diffusion ranges at different local anesthetic volumes during superior laryngeal nerve block
Abstract Objectives Ultrasound-guided superior laryngeal nerve Leggings (SLN) block is a practical and painless approach to avoid the hemodynamic stress response during endotracheal intubation and relieve sore throat after laryngeal surgery.The main purpose of this study was to establish an optimal dosage of local anesthetic when performing SLN blo