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🫀 Oxygen Delivery (DO₂)

UseAssess adequacy of oxygen supply in critical illness.

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SourceVincent JL. Crit Care 2008

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
📋circ hemoOpen scene pack →
Related scores
Score + version; reference only — not a substitute for care · no HIS write

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Methodology · worked example, guidelines & full notes
Clinical takeaway

Integrates cardiac output and oxygen content.

When to use

Assess adequacy of oxygen supply in critical illness.

How it works

DO₂ = CO × CaO₂ × 10, with CaO₂ = 1.34·Hb·SaO₂ + 0.0031·PaO₂. Normal ~ 950–1150 mL/min.

Key points

  • Integrates cardiac output and oxygen content.
  • Below a critical threshold, consumption becomes supply-dependent.
  • Often indexed to body surface area (DO₂I).

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.

Cardiac output5 L/min
Haemoglobin15 g/dL
SaO₂98 %
PaO₂ (optional)100 mmHg

→DO₂1000mL O₂/min

  • CaO₂：20.0 mL/dL
  • Formula：CO × CaO₂ × 10
  • Normal：~ 950–1150 mL/min (index ~500–600 mL/min/m²)
Verification & sources · governance
FAQ

Frequently asked questions

What are the limits and cautions when using Oxygen Delivery (DO₂)?
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 Oxygen Delivery (DO₂) 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 Oxygen Delivery (DO₂) calculated in practice? Can you show a worked example?
Inputs: Cardiac output 5 L/min, Haemoglobin 15 g/dL, SaO₂ 98 %, PaO₂ (optional) 100 mmHg → Result: DO₂ 1000 mL O₂/min（CaO₂: 20.0 mL/dL, Formula: CO × CaO₂ × 10, Normal: ~ 950–1150 mL/min (index ~500–600 mL/min/m²)）
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