CURB-65, also known as the CURB criteria, is a clinical prediction rule that has been validated for predicting mortality in community-acquired pneumonia[1] and infection of any site.[2] The CURB-65 is based on the earlier CURB score[3] and is recommended by the British Thoracic Society for the assessment of severity of pneumonia.[4] It was developed in 2002 at the University of Nottingham by Dr. W.S. Lim et al.[1] In 2018 a new toolkit was presented on the basis of CURB-65.[5]
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