🫁 CURB-65 Score (Pneumonia Severity)
Calculate the CURB-65 score to grade community-acquired pneumonia severity and guide admission.
Clinical takeaway
0–1: often suitable for outpatient care.
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When to use
Severity assessment and disposition in community-acquired pneumonia.
How it works
1 point each: Confusion, Urea > 7 mmol/L, RR ≥ 30, BP (SBP < 90 / DBP ≤ 60), age ≥ 65. 0–1 low, 2 moderate, 3–5 severe.
Key points
- 0–1: often suitable for outpatient care.
- ≥ 3: assess for ICU.
- Use with oxygenation, comorbidity and social factors.
References
Decision support for licensed clinicians only; not a substitute for clinical judgement, diagnosis or local protocols.
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 |
|---|---|
| Urea > 7 mmol/L (BUN > 19 mg/dL) | No |
| Respiratory rate ≥ 30/min | No |
| BP: SBP < 90 or DBP ≤ 60 mmHg | No |
| Age ≥ 65 | No |
→CURB-650/5
- Disposition：Low (consider outpatient)
- 30-day mortality (approx.)：0–1: low · 2: intermediate · 3–5: high
| Confusion (new) | Yes |
|---|---|
| Urea > 7 mmol/L (BUN > 19 mg/dL) | Yes |
| Respiratory rate ≥ 30/min | Yes |
| BP: SBP < 90 or DBP ≤ 60 mmHg | Yes |
| Age ≥ 65 | Yes |
→CURB-655/5
- Disposition：Severe (assess for ICU)
- 30-day mortality (approx.)：0–1: low · 2: intermediate · 3–5: high
Frequently asked questions
- What is CURB-65 Score (Pneumonia Severity)?
- Calculate the CURB-65 score to grade community-acquired pneumonia severity and guide admission.
- How is CURB-65 Score (Pneumonia Severity) calculated? What is the core formula?
- 1 point each: Confusion, Urea > 7 mmol/L, RR ≥ 30, BP (SBP < 90 / DBP ≤ 60), age ≥ 65. 0–1 low, 2 moderate, 3–5 severe.
- When is CURB-65 Score (Pneumonia Severity) used?
- Severity assessment and disposition in community-acquired pneumonia.
- What are the key clinical points for CURB-65 Score (Pneumonia Severity)?
- 0–1: often suitable for outpatient care. ≥ 3: assess for ICU. Use with oxygenation, comorbidity and social factors.
- What are the limits and cautions when using CURB-65 Score (Pneumonia Severity)?
- 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.
- How is CURB-65 Score (Pneumonia Severity) calculated in practice? Can you show a worked example?
- Inputs: Confusion (new) No, Urea > 7 mmol/L (BUN > 19 mg/dL) No, Respiratory rate ≥ 30/min No, BP: SBP < 90 or DBP ≤ 60 mmHg No, Age ≥ 65 No → Result: CURB-65 0 /5（Disposition: Low (consider outpatient), 30-day mortality (approx.): 0–1: low · 2: intermediate · 3–5: high） Inputs: Confusion (new) Yes, Urea > 7 mmol/L (BUN > 19 mg/dL) Yes, Respiratory rate ≥ 30/min Yes, BP: SBP < 90 or DBP ≤ 60 mmHg Yes, Age ≥ 65 Yes → Result: CURB-65 5 /5（Disposition: Severe (assess for ICU), 30-day mortality (approx.): 0–1: low · 2: intermediate · 3–5: high）