Abstract
This chapter does not attempt to provide a comprehensive description of laryngotracheal anatomy, which has already been given in other textbooks [5, 26, 29, 30, 57, 60]. Instead, it highlights the relevant anatomical features that are specific to surgical or endoscopic airway procedures for paediatric airway surgeons. This chapter also examines airway dimensions in relation to endotracheal tubes (ETT), tracheostomy cannulae, rigid bronchoscopes and stents used in these procedures.
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Appendices
Appendix 1
Recommended uncuffed ET-tube sizes
Patient age | Tube size (Portex®) | |
 | ID (mm) | (OD mm) |
Premature <1,000 g | 2.0 | 2.9 |
Premature 1,000–2,000 g | 2.5 | 3.6 |
Newborn to 6 months | 3.0/3.5 | 4.4/5.0 |
6 months to 1 year | 3.5/4.0 | 5.0/5.4 |
1–2 years | 4.0/4.5 | 5.4/6.6 |
2 years and older | \( \frac{{Age}+16}{4} \) |
Appendix 2
Recommended uncuffed and cuffed ET-tubes for children 2 years and older
Uncuffed ET-tube | \( \frac{{Age}+16}{4} \) |
Cuffed ET-tube | \( \frac{{Age}}{4}+3 \) |
Length of insertion | Â |
Oral (cm) | 3 × ID (mm) |
Nasal (cm) | 3 × ID (mm) + 2 |
Appendix 3
Recommended tubes and scopes based on patient age
Patient age | Bronchoscope | Oesophagoscope | Tracheostomy tube ISO | ETT ID | ||
 | size | OD (mm) |  |  |  | |
Premature | 2.5 | 4.2 | 4 | 2.0/2.5 | 2.5 | |
Term newborn | 3.0 | 5.0 | 4–5 | 3.0/3.5 | 3.0/3.5 | |
6–12 months | 3.5 | 5.7 | 5–6 | 3.5/4.0 | 3.5/4.0 | |
1–2 years | 3.7 | 6.4 | 6 | 4.0 | 4.0/4.5 | |
2–3 years | 4.0 | 6.7 | 6–7 | 4.0/4.5 |
| Â |
3–4 years | 4.5 | 7.3 | 7 | 5.0 | \( \frac{{Age}+16}{4} \) | |
4–5 years | 5.0 | 7.8 | 8 | 5.0/5.5 |  |
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Monnier, P. (2011). Applied Surgical Anatomy of the Larynx and Trachea. In: Monnier, P. (eds) Pediatric Airway Surgery. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-13535-4_2
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