Need Tracheal Intubation clinical trials

King Vision and Cervical Spines Movement

Extensive cervical spines movement during endotracheal intubation can result in serious neurological injury, especially in the patients with unrecognized cervical spines injury.[1-2] Moreover, direct laryngoscopy may be difficult if spine movement is limited because of arthritis, disc disease or a small gap between the occiput and the spinous process of the atlas.[3-4] Video laryngoscopes allow for intubation without alignment of the oral, pharyngeal, and tracheal axes which minimize the cervical movements, especially in the patients with restricted cervical movements. [5,6] Compared with the Macintosh laryngoscope, the use of AirWay Scope decreases median upper cervical-spine movement during intubation under in-line stabilization in patients with normal cervical-spine. [6] Unfortunately, the use video laryngoscopes are associated with longer times to tracheal intubation compared with the traditional techniques which may be attributed to the variable learning curves of the practitioners. [7-9] The King Vision video laryngoscope® (King Systems Company, a division of Consort Medical, Indianapolis, Indiana, USA) is an anatomically shaped, rigid laryngoscope that uses fiberoptic technology to view the larynx with micro camera offers a 160 degree of view potentially eliminating the need for neck flexion and head extension. [10] To the best of the authors' knowledge, there is no study has evaluated the King vision laryngoscope regarding the neck movement during routine tracheal intubation under general anesthesia.