🟡 Rebound Hyperbilirubinemia Risk (Chang 2-variable)
UseWhen to use: deciding when to discontinue phototherapy in ≥35-week infants.
StrataHigher score → higher 72-h rebound probability; <38 wk need deeper TSB fall for similar risk.
LimitsWhen not to use: early preterm / exchange pathways alone. · Pitfall: wrong threshold clock. · Not a sole discharge order.
SourceChang & Newman rebound hyperbilirubinemia 2-variable rule (Pediatrics)
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
Two variables.
When to use
When to use: deciding when to discontinue phototherapy in ≥35-week infants.
How it works
Score = 15.5·(GA<38) − 4.3·(start threshold − end TSB); p = 1/(1+e^{−(0.097·Score−2.84)}).
Key points
- Two variables.
- GA dominates risk.
- Next: AAP follow-up TcB/TSB.
References
- Chang & Newman rebound hyperbilirubinemia 2-variable rule (Pediatrics)
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.
| Gestational age | ≥38 weeks |
|---|---|
| Starting AAP threshold − ending TSB | 2.0 mg/dL |
→Rebound risk2.5%
- Prediction score：-8.60
- Cue：<4% — often comfortable for discharge planning with follow-up
| Gestational age | <38 weeks (+15.5) |
|---|---|
| Starting AAP threshold − ending TSB | 2.0 mg/dL |
→Rebound risk10.2%
- Prediction score：6.90
- Cue：>10% — higher rebound risk; consider longer phototherapy
Verification & sources · governance
FAQ
Frequently asked questions
- Does Rebound Hyperbilirubinemia Risk (Chang 2-variable) 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 Rebound Hyperbilirubinemia Risk (Chang 2-variable) calculated in practice? Can you show a worked example?
- Inputs: Gestational age ≥38 weeks, Starting AAP threshold − ending TSB 2.0 mg/dL → Result: Rebound risk 2.5 %（Prediction score: -8.60, Cue: <4% — often comfortable for discharge planning with follow-up） Inputs: Gestational age <38 weeks (+15.5), Starting AAP threshold − ending TSB 2.0 mg/dL → Result: Rebound risk 10.2 %（Prediction score: 6.90, Cue: >10% — higher rebound risk; consider longer phototherapy）