CRB-65 Score for Pneumonia Severity
Measured respiratory rate at assessment.
Measured systolic blood pressure at assessment.
Measured diastolic blood pressure at assessment.
Patient age at assessment.
Clinical noticeThis clinical tool supports decision-making and does not replace individual medical assessment.
Context and use
Assign 1 point for confusion, respiratory rate ≥30 breaths/min, systolic blood pressure <90 mmHg or diastolic blood pressure ≤60 mmHg, and age ≥65 years. The blood pressure criterion contributes no more than 1 point. The total ranges from 0 to 4: 0 is low severity, 1–2 moderate severity, and 3–4 high severity according to NICE.
