Pediatric anesthesia & critical care
A new formula based on height for determining endotracheal intubation depth in pediatrics: A prospective study
Authors' conclusion
The prediction accuracy for intubation depth of the new formula 1 was higher than the other formulae.
Study context
- Population
- Children aged 4–12 years undergoing elective surgery with general orotracheal anesthesia
- Participants
- 111 children
- Exposure
- New height-based formulae vs APLS (age-based) formula vs MFL-based formula for ETT depth
- Outcome
- Derivation of an endotracheal intubation depth formula based on strongly correlated growth parameters (optimal depth measured by Disposcope)
Methodological detailsself-controlled paired design
- Self-controlled paired design
Main finding
As reported in the abstract
Correlation of growth parameters with tracheal length and intubation depth
- Height strongly correlated with tracheal length and intubation depth (R = 0.897, P < 0.001)
Observational data: associations, not effects.
Secondary outcomes
| Outcome | New formula 1 | New formula 2 | APLS formula | MFL-based formula |
|---|---|---|---|---|
| Bland-Altman mean difference of predicted vs optimal intubation depthSelf-controlled paired design | mean difference - 0.354 (95% LOA −1.289–1.998) cm | mean difference 1.354 (95% LOA −0.289–2.998) cm | mean difference 1.154 (95% LOA −1.002–3.311) cm | mean difference −0.619 (95% LOA −2.960–1.723) cm |
| Rate of optimal intubation | 84.69% | 55.86% | 61.26% | — not stated in the abstract |
— not stated in the abstract
Rate of optimal intubation
- Rate higher for new formula 1 than for new formula 2, APLS formula and MFL-based formula
Parts of this Brief are withheld: the automatic checks could not confirm them against the abstract.
Original publication
A new formula based on height for determining endotracheal intubation depth in pediatrics: A prospective study. J Clin Anesth. Published 14 February 2023. doi:10.
Composed by AI from the published abstract and checked against it. How Briefs are made →