Home › Clinical Tools › Refeeding syndrome

⚠️ Refeeding Syndrome Risk (NICE)

UseUse to classify risk and set the starting calorie rate, thiamine supplementation, and electrolyte monitoring …

Loading calculator…

SourceNational Institute for Health and Care Excellence. Nutrition support for adults (CG32).

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.

Score + version; reference only — not a substitute for care · no HIS write

Paste the link in Slack, Teams, X, or LinkedIn — the preview image comes from this page’s Open Graph card.

Methodology · worked example, guidelines & full notes
Clinical takeaway

Feeding is never delayed to correct electrolytes — potassium, phosphate, and magnesium are replaced concurrently. (original synthesis · not guideline verbatim)

When to use

Use to classify risk and set the starting calorie rate, thiamine supplementation, and electrolyte monitoring before and during refeeding.

How it works

High risk = ≥ 1 major (BMI < 16, loss > 15%, minimal intake > 10 days, low pre-feeding K/PO4/Mg) or ≥ 2 minor criteria. Extremely high = BMI < 14 or near-no intake > 15 days. Start 10 kcal/kg/d (extreme 5), thiamine first.

Key points

  • Feeding is never delayed to correct electrolytes — potassium, phosphate, and magnesium are replaced concurrently. (original synthesis · not guideline verbatim)
  • Thiamine is given before feeding and through the first 10 days to prevent Wernicke encephalopathy.
  • Extremely high risk starts at just 5 kcal/kg/d with cardiac monitoring.

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.

BMI16–18.5 (minor)
Unintentional weight loss (3–6 months)10–15% (minor)
Intake/feeding statusLittle or none > 5 days (minor)
Pre-feeding K/phosphate/magnesiumNormal (0)
Alcohol use history or relevant drugs (insulin/chemotherapy/antacids/diuretics)None (0)

→Refeeding riskHigh risk

  • Determination:0 major criteria, 3 minor criteria → High risk (≥ 1 major or ≥ 2 minor = high risk)
  • Feeding initiation:High risk: start at 10 kcal/kg/d, increase gradually to target over 4–7 days
  • Vitamins:Supplement thiamine (vitamin B1) and a B-complex/multivitamin before feeding and for the first 10 days
BMI≥ 18.5 (0)
Unintentional weight loss (3–6 months)< 10% (0)
Intake/feeding statusLargely normal (0)
Pre-feeding K/phosphate/magnesiumNormal (0)
Alcohol use history or relevant drugs (insulin/chemotherapy/antacids/diuretics)None (0)

→Refeeding riskDoes not meet high-risk criteria (still assess individually)

  • Determination:0 major criteria, 0 minor criteria → Does not meet high-risk criteria (still assess individually) (≥ 1 major or ≥ 2 minor = high risk)
  • Feeding initiation:Advance per routine nutrition support, with attention to monitoring
  • Vitamins:Supplement thiamine (vitamin B1) and a B-complex/multivitamin before feeding and for the first 10 days
Verification & sources · governance
FAQ

Frequently asked questions

What are the limits and cautions when using Refeeding Syndrome Risk (NICE)?
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 Refeeding Syndrome Risk (NICE) 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 Refeeding Syndrome Risk (NICE) calculated in practice? Can you show a worked example?
Inputs: BMI 16–18.5 (minor), Unintentional weight loss (3–6 months) 10–15% (minor), Intake/feeding status Little or none > 5 days (minor), Pre-feeding K/phosphate/magnesium Normal (0), Alcohol use history or relevant drugs (insulin/chemotherapy/antacids/diuretics) None (0) → Result: Refeeding risk High risk(Determination: 0 major criteria, 3 minor criteria → High risk (≥ 1 major or ≥ 2 minor = high risk), Feeding initiation: High risk: start at 10 kcal/kg/d, increase gradually to target over 4–7 days, Vitamins: Supplement thiamine (vitamin B1) and a B-complex/multivitamin before feeding and for the first 10 days) Inputs: BMI ≥ 18.5 (0), Unintentional weight loss (3–6 months) < 10% (0), Intake/feeding status Largely normal (0), Pre-feeding K/phosphate/magnesium Normal (0), Alcohol use history or relevant drugs (insulin/chemotherapy/antacids/diuretics) None (0) → Result: Refeeding risk Does not meet high-risk criteria (still assess individually)(Determination: 0 major criteria, 0 minor criteria → Does not meet high-risk criteria (still assess individually) (≥ 1 major or ≥ 2 minor = high risk), Feeding initiation: Advance per routine nutrition support, with attention to monitoring, Vitamins: Supplement thiamine (vitamin B1) and a B-complex/multivitamin before feeding and for the first 10 days)
Related tools