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Pneumonia Severity Index Calculator

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Pneumonia Severity Index (PSI/PORT)

Clinical Decision Tool

Calculates the PSI/PORT score and risk class for adults with community-acquired pneumonia.

Age (years)

Sex

Male 0 Female — subtract 10 points -10

Nursing Home Resident

No 0 Yes — add 10 points +10

Neoplastic Disease

No 0 Yes — add 30 points +30

Liver Disease

No 0 Yes — add 20 points +20

Congestive Heart Failure

No 0 Yes — add 10 points +10

Cerebrovascular Disease

No 0 Yes — add 10 points +10

Renal Disease

No 0 Yes — add 10 points +10

Altered Mental Status

No 0 Yes — add 20 points +20

Respiratory Rate 30/min or Higher

No 0 Yes — add 20 points +20

Systolic Blood Pressure Below 90 mmHg

No 0 Yes — add 20 points +20

Temperature Below 35°C or 40°C or Higher

No 0 Yes — add 15 points +15

Pulse 125/min or Higher

No 0 Yes — add 10 points +10

Arterial pH Below 7.35

No 0 Yes — add 30 points +30

BUN 30 mg/dL or Higher (Urea Approximately 11 mmol/L or Higher)

No 0 Yes — add 20 points +20

Sodium Below 130 mmol/L

No 0 Yes — add 20 points +20

Glucose 250 mg/dL or Higher (Approximately 14 mmol/L)

No 0 Yes — add 10 points +10

Haematocrit Below 30%

No 0 Yes — add 10 points +10

PaO₂ Below 60 mmHg or Oxygen Saturation Below 90%

No 0 Yes — add 10 points +10

Pleural Effusion

No 0 Yes — add 10 points +10

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Clinical Decision Support Only

MediCalc calculators are intended to support qualified healthcare professionals and must not replace professional clinical judgement. Do not enter patient-identifiable information into Saved Progress.

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