Calculate CURB-65 severity score for community acquired pneumonia.
Each of the five criteria contributes one point, and mortality rises steeply above a score of two. The score informs the site-of-care decision within local protocols rather than determining it. Severity scores can underestimate risk in younger patients with few comorbidities, so clinical judgement overrides the score in both directions.
CURB-65 / PSI
One point each for confusion, urea over 7, respiratory rate 30 or more, low BP and age 65 or over
This reproduces a published formula for educational and reference use only. It is not a diagnostic tool, does not account for individual clinical context, and must not be used to make or change treatment decisions. Clinical assessment by a qualified healthcare professional is always required. Pneumonia can deteriorate rapidly. If you or someone else has difficulty breathing, confusion or chest pain, seek urgent medical care. This score is a clinical decision aid, not a triage substitute.
One point each for confusion, urea over 7, respiratory rate 30 or more, low BP and age 65 or over Each of the five criteria contributes one point, and mortality rises steeply above a score of two. The score informs the site-of-care decision within local protocols rather than determining it.
Severity scores can underestimate risk in younger patients with few comorbidities, so clinical judgement overrides the score in both directions.
This calculator takes 6 inputs: New confusion, Blood urea, Respiratory rate, Systolic blood pressure, Diastolic blood pressure, Age. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.