Effect of High-Flow Nasal Oxygen on Laryngoscopic View

This prospective, multicenter observational study aims to evaluate the effect of different flow rates of high-flow nasal oxygen (HFNO) on the quality of the laryngoscopic view during videolaryngoscopy in adult patients undergoing general anesthesia. Each patient will serve as their own control, with repeated measurements obtained at three different HFNO flow settings (0, 40, and 60 L/min). The study will assess objective and subjective parameters of glottic visualization using standardized scoring systems.

NCT Number	NCT07575776
Lead Sponsor	Masarykova Nemocnice v Usti nad Labem, Krajska Zdravotni a.s.
Conditions	High Flow Nasal Canula, Laryngoscopy, Airway Anesthesia, Airway Complication of Anaesthesia, Difficult Airway, Difficult / Failed Intubation
Enrollment	150 participants
Start Date	2026-09-01
Primary Completion	2027-09-01 (estimated)
Study Completion	2027-12-01 (estimated)
Updated on ClinicalTrials.gov	2026-05-08