First-pass success rate and predictive factors for stylet use in videolaryngoscopic intubations with a Macintosh blade: a prospective observational study
Authors' conclusion
Routine stylet preparation for elective videolaryngoscopic intubations with a Macintosh blade may not be necessary, as only a small percentage of patients required it.
Study context
- Population
- Adults scheduled for elective videolaryngoscopic intubation with a Macintosh blade; excluded cervical spine issues, airway disease, anticipated difficult intubation, BMI > 35 kg·m-2, or RSI
- Participants
- 224 adults
- Outcome
- First-pass success rate of videolaryngoscopic intubation without a stylet
Main finding
As reported in the abstract
First-pass success without a stylet
First-pass success rate (180/224)
80%
Observational data: associations, not effects.
Further findings
Predictors of first-pass success without a stylet (multivariable logistic regression)
| OR of first-pass success without a stylet (95% CI) | P value | ||
|---|---|---|---|
| Longer sternomental distance | 1.24 (1.01–1.53) | P = 0.04 | |
| Increased thyromental height | 1.14 (1.07–1.21) | P < 0.001 | |
| Limited cervical spine movementNegatively affected success | 0.39 (0.16–1.00) | P = 0.049 | |
| Severely limited cervical spine movementNegatively affected success | 0.05 (0.01–0.19) | P < 0.001 | |
| 0.050.21520OR of first-pass success without a stylet (log scale) |
Parts of this Brief are withheld: the automatic checks could not confirm them against the abstract.
Original publication
First-pass success rate and predictive factors for stylet use in videolaryngoscopic intubations with a Macintosh blade: a prospective observational study. Can J Anaesth. Published 25 April 2025. doi:10.
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