The lighted stylet is a device that employs the principle of transillumination to facilitate blind orotracheal intubation (an intubation technique in which the laryngoscopist does not view the glottis) [REF].
Tracheal tubes can be used to ensure the adequate exchange of oxygen and carbon dioxide, to deliver oxygen in higher concentrations than found in air, or to administer other gases such as helium,[REF] nitric oxide,[REF] nitrous oxide, xenon,[REF] or certain volatile anesthetic agents such as desflurane, isoflurane, or sevoflurane.