All are true regarding superior laryngeal nerve block, except:
Superior laryngeal nerve supplies sensory supply to the mucosa of larynx upto the level but not including the vocal cords. Sensory supply of vocal cords and larynx below vocal cords is by recurrent laryngeal nerve. Thus in superior laryngeal nerve block, sensory supply below the level of vocal cords will be maintained.
Needle pierces through thyrohyoid membrane
Sensory loss below level of vocal cords occurs
Internal laryngeal nerve is anesthetized
Thyroid notch is used as a landmark