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Calcimator

CURB-65 Pneumonia Severity Calculator

Calculate the CURB-65 score for community-acquired pneumonia severity and disposition guidance.

Inputs

Results

CURB-65 Score

0/ 5

30-Day Mortality

0.7%

Disposition1(1=Outpatient, 2=Inpatient, 3=ICU)
How to Use This Calculator
  1. Enter 0 or 1 for each CURB-65 criterion: confusion, BUN > 7 mmol/L, respiratory rate ≥ 30, low BP, and age ≥ 65.
  2. Review CURB-65 Score and recommended disposition (outpatient, admission, or ICU).
  3. Score 0–1: outpatient; 2: short inpatient stay or close follow-up; 3+: hospital admission.

What each input means

Confusion
New mental confusion (AMT <=8 or disorientation) (+1 point).
Blood Urea > 7 mmol/L
BUN > 19 mg/dL or urea > 7 mmol/L (+1 point).
Respiratory Rate >= 30
Respiratory rate of 30 breaths/min or more (+1 point).
Low Blood Pressure
Systolic BP <90 mmHg or diastolic BP <=60 mmHg (+1 point).
Age >= 65
Patient is 65 years or older (+1 point).

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    4 parameters
    Confusion = 0, Blood Urea > 7 mmol/L = 0, Respiratory Rate >= 30 = 0, Low Blood Pressure = 0 = 5 input(s) provided
  2. Calculate CURB-65 Score
    CURB-65 Score
    0 = 0
  3. Calculate 30-Day Mortality
    30-Day Mortality
    0.7 = 0.7%
  4. Calculate Disposition
    Disposition
    1 = 1

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