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Transverse approach for ultrasound‑guided superior laryngeal nerve block for awake fiberoptic intubation plane to the probe. Two cc of 1% lignocaine was deposited below the greater cornua of the HB and above the superior cornua of TC to block the SLN. Following this, transtracheal injection with 2 cc 1% lignocaine was done. AFOI was done and the surgery commenced.

SLN is a branch of vagus nerve that bifurcates into an external and internal branch. The external branch provides motor innervation to cricothyroid muscle. The internal branch is a sensory branch innervating base of the tongue, epiglottis, and the mucous membrane of the larynx down to the vocal cords. The internal branch passes immediately inferior to the greater horn of the HB and approaches the thyrohyoid membrane accompanied by the superior laryngeal artery, a branch of the superior thyroid artery. This is the location where it can be …