ANESTHESIA for laryngoscopy differs somewhat from anesthesia for bronchoscopy. In the latter procedure, ventilation can be achieved by the use of a ventilating bronchoscope, or by inserting a small endotracheal tube prior to and during the bronchoscopy, or insufflating oxygen by the side-arm on the bronchoscope. In direct laryngoscopy the above methods are not applicable because the tube may interfere with visualization of the field or may interfere with the surgeon.
The most common method of anesthesia for laryngoscopy is the use of topical analgesia with heavy sedation. This is an excellent method in skilled hands, but it may be unsuccessful with uncooperative patients or young children. There are many anesthetic techniques for laryngoscopy reported in the current literature, namely, the use of the recovery phase of deep ether anesthesia; the use of methoxyflurane in a similar manner; the use of topical analgesia with general anesthesia; the use of intravenous
Blancato LS, Peng ATC. Lidocaine With General Anesthesia for Laryngoscopy. Arch Otolaryngol. 1968;87(3):285–288. doi:10.1001/archotol.1968.00760060287012
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