CURB-65 score for assessment of severity of pneumonia.






The score is an acronym for each of the risk factors measured. Each risk factor scores one point, for a maximum score of 5:
  • Confusion of new onset (defined as an AMTS of 8 or less)
  • Blood Urea nitrogen greater than 7 mmol/l (19 mg/dL)
  • Respiratory rate of 30 breaths per minute or greater
  • Blood pressure less than 90 mmHg systolic or diastolic blood pressure 60 mmHg or less
  • Age 65 or older


The risk of death at 30 days increases as the score increases:
  • 0—0.6%
  • 1—2.7%
  • 2—6.8%
  • 3—14.0%
  • 4—27.8%
  • 5—27.8%

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