🧂 Sodium Correction for Hyperglycemia
UseDKA/HHS or marked hyperglycemia: gauge the sodium expected after glucose is corrected.
StrataA low corrected Na suggests hyponatremia will persist after euglycaemia; a high value flags hidden hypernatre…
LimitsDo not use in hypoglycemia. · Coefficients vary; Hillier often fits severe hyperglycemia better. · Does not replace serial electrolytes.
SourceKatz MA. Hyperglycemia-induced hyponatremia — calculation of expected serum sodium depression. N En…
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
Shows Katz 1.6 and Hillier 2.4.
When to use
DKA/HHS or marked hyperglycemia: gauge the sodium expected after glucose is corrected.
How it works
Na_corr = measured Na + factor × ((glucose mg/dL − 100)/100) Katz 1.6; Hillier 2.4. mmol/L ×18 ≈ mg/dL.
Key points
- Shows Katz 1.6 and Hillier 2.4.
- Glucose in mmol/L or mg/dL.
- Estimates Na after glucose is normalised.
References
- Katz MA. Hyperglycemia-induced hyponatremia — calculation of expected serum sodium depression. N Engl J Med 1973;289:843-844
- Hillier TA, Abbott RD, Barrett EJ. Hyponatremia: evaluating the correction factor for hyperglycemia. Am J Med 1999;106:399-403
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.
| Measured sodium | 128 mmol/L |
|---|---|
| Glucose | 20 |
| Glucose unit | mmol/L |
→Corrected Na (Katz 1.6)132.2mmol/L
- Corrected Na (Hillier 2.4)：134.2 mmol/L
- Glucose used：360 mg/dL
| Measured sodium | 128 mmol/L |
|---|---|
| Glucose | 20 |
| Glucose unit | mg/dL |
→Corrected Na (Katz 1.6)126.7mmol/L
- Corrected Na (Hillier 2.4)：126.1 mmol/L
- Glucose used：20 mg/dL
Verification & sources · governance
FAQ
Frequently asked questions
- Does Sodium Correction for Hyperglycemia 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 Sodium Correction for Hyperglycemia calculated in practice? Can you show a worked example?
- Inputs: Measured sodium 128 mmol/L, Glucose 20, Glucose unit mmol/L → Result: Corrected Na (Katz 1.6) 132.2 mmol/L（Corrected Na (Hillier 2.4): 134.2 mmol/L, Glucose used: 360 mg/dL） Inputs: Measured sodium 128 mmol/L, Glucose 20, Glucose unit mg/dL → Result: Corrected Na (Katz 1.6) 126.7 mmol/L（Corrected Na (Hillier 2.4): 126.1 mmol/L, Glucose used: 20 mg/dL）