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What is With regard to laryngeal trauma associated with the placement of an endotracheal tube (ETT) – a) It is most likely to occur at the thyroid cartilageb) Trauma to the vocal cords usually involves the rightc) Vocal cord paralysis is caused by injury to the anterior branch of the recurrent laryngeal nerved) Postoperative hoarseness greater than one week is likely to represent transient nerve injury and explain in detail?
In subglottic larynx, an anterior branch of recurrent laryngeal nerve enters between the cricoid and thyroid cartilage, innervating the intrinsic muscles of the larynx. An inflated cuff at this location can compress the nerve between the cuff and the overlying thyroid cartilage. Injury is usually bilateral. Endotracheal intubation causes bilateral recurrent laryngeal nerve palsy.