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Trāchē′ōscopist, one who practises tracheoscopy; Trāchē′ōscōpy, the inspection of the trachea; Trā′cheotome, a knife used in tracheotomy; Trāchēot′ōmist, one who practices tracheotomy; Trācheot′omy, the operation of making an opening in the trachea; Trāchī′tis, Trachēī′tis, inflammation of the trachea.

This procedure is described as direct upper tracheoscopy and bronchoscopy.

The examination may also be made through a tracheotomy wound—direct lower tracheoscopy.

Tracheoscopy and Bronchoscopy.—Direct examination of the trachea and larger bronchi may be carried out in a similar way, by passing through the mouth and larynx metal tubes, after the method devised by Killian.

On tracheoscopy the mucosa is thinned, pale and dry, and is covered with patches of thick mucilaginous secretion and crusts.