Doctaverse
Emergency/Resus

ET Tube Size

Age-based endotracheal tube internal diameter (Cole / APLS formula).

Scope: Age-based (Cole/APLS), valid ≥1–2 yr; not for neonates/infants — use weight/length-based sizing.

Inputs

FieldUnitNotes
Tube type
Age years 1–16

FAQ

What is the ET Tube Size?

Age-based endotracheal tube internal diameter (Cole / APLS formula).

What inputs does the ET Tube Size need?

Tube type, Age (years).

Are there any limitations?

Age-based (Cole/APLS), valid ≥1–2 yr; not for neonates/infants — use weight/length-based sizing.

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