STUDY OBJECTIVE The objective of this study was to determine the effect of increasing head elevation and neck flexion on the quality of laryngeal view during laryngoscopy. METHODS Laryngoscopy with a straight blade was performed on 7 fresh human cadavers. Laryngeal views were recorded with the direct laryngoscopy video system, and the laryngoscopy angle was measured throughout the procedure w...

The Bonfils retromolar intubation fiberscope is a rigid endoscope designed to enable glottic visualization and facilitate intubation under endoscopic vision. Theoretically, avoiding direct-vision laryngoscopy and thus could produce less stimulation during intubation than the conventional direct laryngoscopic procedure. This prospective randomized study was designed to compare the effect of trac...

Following the introduction of the straight (Miller, 1941) and curved (Macintosh, 1942) laryngoscope blades, laryngoscopy had remained largely unchanged for more than 50 years. With the development of rigid fiberoptic laryngoscopes—the first generation of video laryngoscopes—clinicians benefited from advances such as eyepieces that could be attached to optional video cameras, such as the Bullard...

AANA Journal  December 2017  Vol. 85, No. 6 445 Injuries can occur during endotracheal intubation. This prospective, randomized, blinded study aimed to determine if a difference exists in incidence of injury following endotracheal intubation using either direct laryngoscopy or the GlideScope video laryngoscope (Verathon Inc). A convenience sample of 155 patients scheduled to undergo surgery t...