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🫁 CRB-65 Score (Pneumonia, Community)

UsePneumonia severity without laboratory tests (community setting).

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StrataC confusion, R respiratory rate ≥30/min, B low blood pressure (SBP <90 or DBP ≤60), 65 age ≥65; 1 point each.…

LimitsNot a diagnosis or disposition decision on its own. · Interpret with history, examination and other tests. · For licensed clinicians; does not replace clinical judgement.

SourceLim WS, et al. Thorax 2003;58:377–382

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.

Scene next step
📋Community-acquired pneumoniaOpen scene pack →
Related scores
Matching pathway
🧭cap_dispoOpen pathway →
Score + version; reference only — not a substitute for care · no HIS write

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Methodology · worked example, guidelines & full notes
Clinical takeaway

C + R + B + 65 = 0–4

When to use

Pneumonia severity without laboratory tests (community setting).

How it works

C + R + B + 65 = 0–4

Key points

  • C + R + B + 65 = 0–4

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.

Confusion (new)No
Respiratory rate ≥ 30No
SBP < 90 or DBP ≤ 60No
Age ≥ 65No

→CRB-650/4

  • Risk group：0: low mortality-risk group
Confusion (new)Yes (+1)
Respiratory rate ≥ 30Yes (+1)
SBP < 90 or DBP ≤ 60Yes (+1)
Age ≥ 65Yes (+1)

→CRB-654/4

  • Risk group：3–4: high mortality-risk group
Verification & sources · governance
FAQ

Frequently asked questions

Does CRB-65 Score (Pneumonia, Community) 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 CRB-65 Score (Pneumonia, Community) calculated in practice? Can you show a worked example?
Inputs: Confusion (new) No, Respiratory rate ≥ 30 No, SBP < 90 or DBP ≤ 60 No, Age ≥ 65 No → Result: CRB-65 0 /4（Risk group: 0: low mortality-risk group） Inputs: Confusion (new) Yes (+1), Respiratory rate ≥ 30 Yes (+1), SBP < 90 or DBP ≤ 60 Yes (+1), Age ≥ 65 Yes (+1) → Result: CRB-65 4 /4（Risk group: 3–4: high mortality-risk group）
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