Key takeaways
- Tubing diameter and length both affect delivered flow.
- Humidifiers add resistance; high-output machines compensate.
- Cannula fit changes effective delivered fraction.
Where flow is lost
A long, narrow cannula reduces delivered flow. So does a poorly seated humidifier. Quality machines measure delivered flow, not just stack output.
Frequently asked questions
Slightly, yes — but within normal cannula lengths the difference is small.
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- Hydrogen Tablets: What You Should Know — What dissolving reactive material can leave behind.
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