CURB-65 Score Calculator

Calculate the CURB-65 score to assess pneumonia severity and guide decisions about hospital admission and antibiotic treatment according to UK guidelines.

Important Disclaimer: This calculator is for informational purposes only and should be used under the guidance of a healthcare professional. Community-acquired pneumonia can be serious and requires proper clinical assessment and management by qualified healthcare providers.

CURB-65 Score

Confusion (New onset confusion, disorientation, or AMT score ≤ 8)

Urea > 7 mmol/L (BUN > 19 mg/dL)

Respiratory rate ≥ 30 breaths/minute

Blood pressure (SBP < 90 mmHg or DBP ≤ 60 mmHg)

65 years of age or older

Recommended Management

Antibiotic Guidance

About CURB-65 Score

The CURB-65 score is a clinical prediction rule used to determine the severity of community-acquired pneumonia and likely mortality. It was developed by the British Thoracic Society and is widely used in the UK and internationally.

Components:

Confusion: New onset confusion, disorientation, or AMT score ≤ 8
Urea: Blood urea nitrogen > 7 mmol/L (19 mg/dL)
Respiratory rate: ≥ 30 breaths per minute
Blood pressure: Systolic BP < 90 mmHg or Diastolic BP ≤ 60 mmHg
65: Age ≥ 65 years

Interpretation:

Score	Risk Group	30-day Mortality	Recommended Management
0	Low	0.6%	Consider home treatment
1	Low	2.7%	Consider home treatment
2	Moderate	6.8%	Short inpatient hospitalization or supervised outpatient treatment
3	Severe	14.0%	Hospitalize and consider ICU assessment
4-5	Very Severe	27.8% - 57.0%	Hospitalize and consider ICU admission

Note: This calculator is intended for healthcare professionals. Clinical judgment should always be used alongside the CURB-65 score when making decisions about patient management. Follow your local antimicrobial guidelines for specific antibiotic recommendations.