Association between glottic view and tracheal intubation during videolaryngoscopy: a prospective observational study
Authors' conclusion
The ease of tracheal intubation with videolaryngoscopy cannot be inferred from glottic view alone. A structured approach that incorporates what was used, what was seen and what was done may improve communication in clinical practice.
Study context
- Population
- Videolaryngoscopic tracheal intubations assessed independently by an airway operator and an observer across 44 hospitalstracheal intubations with paired assessments analysed
- Participants
- 5,302 intubations
- Exposure
- The relationship between glottic view and tracheal tube delivery was analysed across predefined percentage of glottic opening (POGO) categories.
- POGO < 25%n = 151
- POGO ≥ 25%n = 5,151
- POGO > 75%n = 4,025
- Outcome
- Inter-rater agreement for the three-domain classification
Main finding
As reported in the abstract
Krippendorff's α
0.86, 95%CI 0.85-0.87
Observational data: associations, not effects.
Further findings
- Tracheal intubations classified as easy among those with poor view (POGO < 25%)
- 24.5% · 37/151 of 151
- Tracheal intubations classified as difficult or failed among those with POGO ≥ 25%
- 10.2% · 527/5151 of 5151
- Initial strategy classified as difficult or failed among cases with excellent glottic view (POGO > 75%)
- 6.3% · 252/4025 of 4025
Original publication
Association between glottic view and tracheal intubation during videolaryngoscopy: a prospective observational study. Anaesthesia. Published 2 October 2026. doi:10.
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