🧪 Bicarbonate Deficit
Estimate the bicarbonate deficit in metabolic acidosis.
Bicarbonate Deficit
Weight (kg)
Measured HCO₃⁻ (mmol/L)
Target HCO₃⁻ (mmol/L)
When to use
Gauge bicarbonate replacement when indicated.
How it works
HCO₃ deficit ≈ 0.5 × weight (kg) × (target − measured HCO₃). The bicarbonate space rises in severe acidosis.
Key points
- Routine bicarbonate is reserved for specific situations.
- Replace partially and recheck.
- Treat the underlying cause first.
References
Decision support for licensed clinicians only; not a substitute for clinical judgement, diagnosis or local protocols.