. Modern surgery, general and operative. hetrachea. This accident would requirerepetition of the whole procedure. Thefact that the bronchoscope is in thetrachea and not in the esophagus, isrecognized by the strong expiratoryblast, the absence of voice and thevisible tracheal rings. It must be re-membered, however, that there is aslight pseudorespiratory current througha tube in the esophagus, that a verysmall bronchoscope in the trachea maypermit phonation, and that endotrachealinflammation may obliterate the visi-bility of the rings. The trachea standsopen, whereas the cervical esophagusdoes
. Modern surgery, general and operative. hetrachea. This accident would requirerepetition of the whole procedure. Thefact that the bronchoscope is in thetrachea and not in the esophagus, isrecognized by the strong expiratoryblast, the absence of voice and thevisible tracheal rings. It must be re-membered, however, that there is aslight pseudorespiratory current througha tube in the esophagus, that a verysmall bronchoscope in the trachea maypermit phonation, and that endotrachealinflammation may obliterate the visi-bility of the rings. The trachea standsopen, whereas the cervical esophagusdoes not; but the posterior wall of thetrachea collapses forward, especially inchildren, and the thoracic esophagusremains somewhat open when an en-doscopic tube is in place Some practiceis therefore required to be prompt inmaking sure that the bronchoscopedoes not enter the esophagus instead ofthe trachea. To prevent this accidentit is well to give a little additional liftto the laryngoscope at the momentwhen the bronchoscopic tube-mouth is.
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