Two-Segment Flexible Macintosh Laryngoscope to Improve Glottic Visualization During Endotracheal Intubation

Abstract

Endotracheal intubation is a frequently performed life-saving procedure in medicine. Obtaining view of glottic structures is essential for successful completion of endotracheal intubation. Most frequently used devices called laryngoscopes sometimes fail to obtain view, which would allow for a successful completion of endotracheal intubation. To improve visualization of glottic structures, practitioners can use high-tech video-laryngoscopes, but these are not available to everyone, especially not in the third world countries. Alternatively, practitioners can use two-segment laryngoscopes. We developed a prototype of a two-segment flexible laryngoscope and tested it in a simulated environment. The glottic visualization statistically significantly (p = 0.000038) improved with the use of flexible laryngoscope. Our study strengthens available evidence that multisegment laryngoscope blades can improve glottic visualization and decrease forces exerted on soft tissues of larynx.