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🥩 Nitrogen Balance

UseWhen to use: ICU / nutrition follow-up when 24-h UUN and intake are charted.

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StrataNegative balance suggests catabolism or underfeeding — recheck collection completeness.

LimitsWhen not to use: incomplete 24-h urine. · Pitfall: ignoring fistula/burn losses. · CKD caveat.

SourceStandard nitrogen-balance teaching arithmetic

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.

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Methodology · worked example, guidelines & full notes
Clinical takeaway

protein/6.25 − losses.

When to use

When to use: ICU / nutrition follow-up when 24-h UUN and intake are charted.

How it works

N balance = protein/6.25 − (UUN + other losses).

Key points

  • protein/6.25 − losses.
  • Default other ≈4 g.
  • Next: protein goal review.

References

  • Standard nitrogen-balance teaching arithmetic

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.

Protein intake100 g/day
Urine urea nitrogen (UUN)12 g/day
Other N losses (stool/skin/fistula)4 g/day

→N balance0.0g/day

  • N in (protein/6.25)：16.0 g/day
  • N out (UUN+other)：16.0 g/day
  • Other losses used：4.0 g/day
Verification & sources · governance
FAQ

Frequently asked questions

Does Nitrogen Balance 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 Nitrogen Balance calculated in practice? Can you show a worked example?
Inputs: Protein intake 100 g/day, Urine urea nitrogen (UUN) 12 g/day, Other N losses (stool/skin/fistula) 4 g/day → Result: N balance 0.0 g/day（N in (protein/6.25): 16.0 g/day, N out (UUN+other): 16.0 g/day, Other losses used: 4.0 g/day）
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