Optimal endotracheal tube insertion depth in infants with birth weights under 500 grams
- 30 March 2026
- journal article
- research article
- Published by Springer Nature in Journal of Perinatology
- p. 1-4
Abstract
Objective Develop a birth anthropometry-based model to estimate initial endotracheal tube (ETT) insertion depth for infants with birth weight p < 0.001). A combined quadratic model showed the strongest fit (adjusted R² = 0.70), outperforming single parameter rules. Conclusion In neonates <500 g, a quadratic weight-length model improves the prediction of radiograph-defined midtracheal ETT depth and offers a practical bedside guide for initial placement.Keywords
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