NCT07174050

King Vision vs Macintosh Laryngoscopy for Intubation Time in Novice Users

Comparison of the King Vision Channeled Videolaryngoscope and Conventional Laryngoscopy for Endotracheal Intubation Time in Novice Users: A Prospective, Randomised Controlled Trial

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 70 (actual)
• Sponsor: Hitit University · Academic / Other
• Sex: All
• Age: 18 Years
• Healthy volunteers: Not accepted

Summary

This study evaluated two different devices used for placing a breathing tube (endotracheal intubation) in adult patients undergoing elective surgery. The aim was to compare the King Vision videolaryngoscope, which has a camera and a guiding channel for the tube, with the traditional Macintosh laryngoscope, which allows doctors to look directly at the vocal cords. The study focused on how long it takes to successfully insert the tube, the need for additional maneuvers during the procedure, and the overall success rate of first attempts. The procedures were performed by novice operators under supervision.

Conditions

• Airway Management
• Endotracheal Intubation
• Tracheal Intubation, Elective Surgery

Interventions

Type	Name	Description
DEVICE	King Vision Channeled Video Laryngoscope	King Vision Videolaryngoscope (KVVL) is one of the new indirect laryngoscopes with disposable (either with channeled or non-channeled) blades .Both designs include an anti-fog lens coating . The channelled KVVL has a rigid blade with an integrated channel for introducing the endotracheal tube. The height and width of the standard non-channeled and channeled blades are 13 mm and 26 mm vs 18 mm and 29 mm, respectively. The KVVL has a unique design and high-quality image . It has a camera that enables a clear view of the glottis. It is a solid, portable, battery-operated device with an organic LED display for video laryngoscopy . It allows better glottis visualization and Cormack Lehane score than DL. Compared with Airtraq, the KVVL has wide field of view (160° vs 80° respectively) and potentially shortens the time to tracheal intubation .
DEVICE	Macintosh Laryngoscopy	In clinical practice, direct laryngoscopy (DL) with either a curved (Macintosh) or straight (Miller) blade is a well-known and reliable technique in the hands of an experienced operator.

Timeline

• Start date: 2023-01-01
• Primary completion: 2023-07-31
• Completion: 2024-01-01
• First posted: 2025-09-15
• Last updated: 2025-09-15

Locations

1 site across 1 country: Turkey (Türkiye)