🧠 DRAGON Score (Post-tPA Stroke Outcome)
UseWhen to use: ultra-early counseling after deciding IV thrombolysis.
StrataLow scores often favorable; very high scores foreshadow poor outcome despite tPA.
LimitsWhen not to use: to withhold indicated thrombolysis alone. · Pitfall: delaying door-to-needle to compute the score. · Supports escalation talk (e.g., endovascular) when high.
SourceStrbian D et al. Neurology 2012 (DRAGON)
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
0–10 points.
When to use
When to use: ultra-early counseling after deciding IV thrombolysis.
How it works
Dense artery/early CT + prestroke mRS>1 + age + glucose + OTT>90 + NIHSS bands.
Key points
- 0–10 points.
- High → poor prognosis cue.
- Next: NIHSS / ASPECTS / EVT.
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.
| Hyperdense artery and/or early infarct signs on CT | Either (1) |
|---|---|
| Prestroke mRS > 1 | No (0) |
| Age | 65–79 (1) |
| Glucose > 8 mmol/L (144 mg/dL) | No (0) |
| Onset-to-treatment > 90 minutes | No (0) |
| Baseline NIHSS | 5–9 (1) |
→DRAGON3/10
- Cue：Generally favorable band — still individualized
| Hyperdense artery and/or early infarct signs on CT | Neither (0) |
|---|---|
| Prestroke mRS > 1 | No (0) |
| Age | < 65 (0) |
| Glucose > 8 mmol/L (144 mg/dL) | No (0) |
| Onset-to-treatment > 90 minutes | No (0) |
| Baseline NIHSS | 0–4 (0) |
→DRAGON0/10
- Cue：Very high chance of good 3-month outcome in derivation cohorts
Verification & sources · governance
FAQ
Frequently asked questions
- Does DRAGON Score (Post-tPA Stroke Outcome) 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 DRAGON Score (Post-tPA Stroke Outcome) calculated in practice? Can you show a worked example?
- Inputs: Hyperdense artery and/or early infarct signs on CT Either (1), Prestroke mRS > 1 No (0), Age 65–79 (1), Glucose > 8 mmol/L (144 mg/dL) No (0), Onset-to-treatment > 90 minutes No (0), Baseline NIHSS 5–9 (1) → Result: DRAGON 3 /10（Cue: Generally favorable band — still individualized） Inputs: Hyperdense artery and/or early infarct signs on CT Neither (0), Prestroke mRS > 1 No (0), Age < 65 (0), Glucose > 8 mmol/L (144 mg/dL) No (0), Onset-to-treatment > 90 minutes No (0), Baseline NIHSS 0–4 (0) → Result: DRAGON 0 /10（Cue: Very high chance of good 3-month outcome in derivation cohorts）