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Respiratory · Monitoring
Pulse Oximeter
Non-invasive monitor of oxygen saturation (SpO₂).
AI overview
A pulse oximeter measures peripheral oxygen saturation and pulse rate using two wavelengths of light absorbed through perfused tissue.
Ask Skantra about thisCommon uses
- Continuous SpO₂ monitoring
- Spot checks during triage and rounding
- Titration of supplemental oxygen
Safety notes
- Rotate probe site every 2–4 hours to prevent pressure injury
- SpO₂ does not detect carbon monoxide or methemoglobin
Setup instructions
- 1Select probe site: fingertip, earlobe, or toe
- 2Remove nail polish or artificial nails if present
- 3Align light source over nail bed; secure probe
- 4Wait for stable plethysmograph waveform before recording
Troubleshooting
Low or no signal
Warm extremity; try different site; check for motion artifact.
Falsely low reading
Check for poor perfusion, hypotension, or vasoconstriction.
Reading does not match patient status
Confirm with ABG; rule out CO poisoning.
Training video
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