🌬️ Cuff Leak Test (% / Volume)
UseWhen to use: assessing post-extubation stridor risk in at-risk intubated adults.
StrataLow leak raises laryngeal edema/stridor concern — follow local steroid/extubation protocols.
LimitsWhen not to use: unreliable VT measurement / large secretions. · Pitfall: single absolute cut-off dogma. · Not sole extubation decision.
SourceCuff-leak volume/percent teaching arithmetic
This-shift next steps
After scoring: open the scene pack, peer scores, and the matching pathway. Local reference — no HIS write.
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Methodology · worked example, guidelines & full notes
CLV and % leak.
When to use
When to use: assessing post-extubation stridor risk in at-risk intubated adults.
How it works
CLV = VT_up − VT_down; % = CLV/VT_up × 100%.
Key points
- CLV and % leak.
- Stridor risk adjunct.
- Next: air leak / steroids protocol.
References
- Cuff-leak volume/percent teaching arithmetic
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.
| VT with cuff inflated | 450 mL |
|---|---|
| VT with cuff deflated | 380 mL |
→Cuff-leak %16%
- Leak volume：70 mL
- VT cuff up → down：450 → 380 mL
- Cue：Low leak (often <10% or <≈110 mL) — higher post-extubation stridor risk cue; thresholds vary
Verification & sources · governance
FAQ
Frequently asked questions
- Does Cuff Leak Test (% / Volume) 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 Cuff Leak Test (% / Volume) calculated in practice? Can you show a worked example?
- Inputs: VT with cuff inflated 450 mL, VT with cuff deflated 380 mL → Result: Cuff-leak % 16 %（Leak volume: 70 mL, VT cuff up → down: 450 → 380 mL, Cue: Low leak (often <10% or <≈110 mL) — higher post-extubation stridor risk cue; thresholds vary）