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🧒 Pediatric ETT Size & Depth

UseQuick airway preparation for pediatric intubation.

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SourceAmerican Heart Association. Pediatric Advanced Life Support (PALS) airway guidance.

Runs locally in your browser (no PHI uploaded). For licensed clinicians — not a substitute for clinical judgement.
Stored on this device for revisit reminders

This-shift next steps

After scoring: open the scene pack, peer scores, and the matching pathway. Local reference — no HIS write.

Scene next step
📋resp failureOpen scene pack →
Related scores
Matching pathway
🧭pe_dxOpen pathway →
Score + version; reference only — not a substitute for care · no HIS write

Paste the link in Slack, Teams, X, or LinkedIn — the preview image comes from this page’s Open Graph card.

Methodology · worked example, guidelines & full notes
Clinical takeaway

Keep ± 0.5 sizes available.

When to use

Quick airway preparation for pediatric intubation.

How it works

Uncuffed ID = age/4 + 4; cuffed = age/4 + 3.5 (mm). Depth ≈ ID × 3 (cm) or age/2 + 12. Infants < 1 y by weight.

Key points

  • Keep ± 0.5 sizes available.
  • Confirm position with end-tidal CO₂, auscultation and chest radiograph.
  • Infants are sized by weight, not the age formula.

References

Worked calculation

The values below come from this tool's own example placeholders and are computed server-side with the formula shown on this page, so the arithmetic can be checked quickly. It demonstrates how to substitute values only — it is not clinical advice and not a real case.

Age4 years

→ETT internal diameteruncuffed 5 / cuffed 4.5 mm

  • Uncuffed ID：5 mm (age/4 + 4)
  • Cuffed ID：4.5 mm (age/4 + 3.5; some use +3, adjust by brand/clinical)
  • Insertion depth：Lip ≈ ID × 3 = 15 cm; or age/2 + 12 = 14 cm
Verification & sources · governance
FAQ

Frequently asked questions

What are the limits and cautions when using Pediatric ETT Size & Depth?
For licensed clinicians and clinical researchers. Interpret results with history, investigations and local protocols; not a diagnosis or prescription, and not a substitute for multidisciplinary decision-making or local guidelines.
Does Pediatric ETT Size & Depth upload patient data? Where is it calculated?
Calculation runs locally in the browser; inputs and results are not uploaded. For licensed clinicians only; interpret with history, investigations and local protocols — not a diagnosis or prescription.
How is Pediatric ETT Size & Depth calculated in practice? Can you show a worked example?
Inputs: Age 4 years → Result: ETT internal diameter uncuffed 5 / cuffed 4.5 mm（Uncuffed ID: 5 mm (age/4 + 4), Cuffed ID: 4.5 mm (age/4 + 3.5; some use +3, adjust by brand/clinical), Insertion depth: Lip ≈ ID × 3 = 15 cm; or age/2 + 12 = 14 cm）
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