🧪 Bicarbonate Deficit
UseOrder-of-magnitude HCO₃ difference in metabolic acidosis.
SourceStandard acid–base/bicarbonate space references
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
An order-of-magnitude difference, not a prescription.
When to use
Order-of-magnitude HCO₃ difference in metabolic acidosis.
How it works
HCO₃ deficit ≈ 0.5 × weight (kg) × (target − measured HCO₃). The bicarbonate space rises in severe acidosis.
Key points
- An order-of-magnitude difference, not a prescription.
- BICAR-ICU 2018: no overall benefit on the primary outcome; benefit only in the AKI subgroup.
- Decide by cause and local protocol.
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.
| Weight | 70 kg |
|---|---|
| Measured HCO₃⁻ | 14 mmol/L |
| Target HCO₃⁻ | 24 mmol/L |
→HCO₃ deficit350mmol
- Formula：0.5 × weight × (target − measured HCO₃)
Verification & sources · governance
FAQ
Frequently asked questions
- What are the limits and cautions when using Bicarbonate Deficit?
- 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 Bicarbonate Deficit 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 Bicarbonate Deficit calculated in practice? Can you show a worked example?
- Inputs: Weight 70 kg, Measured HCO₃⁻ 14 mmol/L, Target HCO₃⁻ 24 mmol/L → Result: HCO₃ deficit 350 mmol（Formula: 0.5 × weight × (target − measured HCO₃)）