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PSI/PORT (Pneumonia Severity Index)

Classifies adults with community-acquired pneumonia into five 30-day mortality risk classes using 20 demographic, clinical, laboratory and radiologic variables.

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Check the population, units and version. The result shows the formula or classification; it does not make an automatic treatment decision.

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Method · Limits of application

PSI/PORT/Fine 1997: class I rule and stage 2 scores I–V; not CURB-65

PSI/PORT was developed for adults with community-acquired pneumonia and 30-day mortality risk. Low classes do not mean no risk or an automatic discharge decision. Eligibility criteria, pneumonia definition and conditions for outpatient management must follow the clinical protocol.

Required fields: 0/20 completed

Complete all required fields. Optional fields are marked.

Sex required

Age requiredyears · range 18–110

Lives in a long-term care facility (+10) required

Active neoplasm or diagnosed in the last year (+30) required

Liver disease (cirrhosis, chronic hepatitis) (+20) required

Heart failure (+10) required

Cerebrovascular disease (+10) required

Chronic kidney disease (+10) required

Altered mental status (+20) required

Respiratory rate ≥ 30 breaths/min (+20) required

Systolic blood pressure < 90 mmHg (+20) required

Temperature < 35 °C or ≥ 40 °C (+15) required

Heart rate ≥ 125 bpm (+10) required

Arterial pH < 7.35 (+30) required

Urea ≥ 64 mg/dL (BUN ≥ 30 mg/dL) (+20) required

Sodium < 130 mEq/L (+20) required

Glucose ≥ 250 mg/dL (+10) required

Hematocrit < 30% (+10) required

PaO₂ < 60 mmHg or O₂ saturation < 90% (+10) required

Pleural effusion on radiograph (+10) required

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Conditions of use

Check the population, units, inclusion and exclusion criteria, and version in the original source. A result alone does not establish a diagnosis, discharge decision or prescription.

Documented parameters

Sex
Age · years
Lives in a long-term care facility (+10)
Active neoplasm or diagnosed in the last year (+30)
Liver disease (cirrhosis, chronic hepatitis) (+20)
Heart failure (+10)
Cerebrovascular disease (+10)
Chronic kidney disease (+10)
Altered mental status (+20)
Respiratory rate ≥ 30 breaths/min (+20)
Systolic blood pressure < 90 mmHg (+20)
Temperature < 35 °C or ≥ 40 °C (+15)
Heart rate ≥ 125 bpm (+10)
Arterial pH < 7.35 (+30)
Urea ≥ 64 mg/dL (BUN ≥ 30 mg/dL) (+20)
Sodium < 130 mEq/L (+20)
Glucose ≥ 250 mg/dL (+10)
Hematocrit < 30% (+10)
PaO₂ < 60 mmHg or O₂ saturation < 90% (+10)
Pleural effusion on radiograph (+10)

6/6 reference cases checked. Numerical tests are not clinical validation.

Sources and documentation

Documented formula

Transcribed from the source or a recorded revision; this is not a clinical recommendation.

Step 1 (class I): age in years ≤ 50; no comorbidities (5: neoplasm, liver disease, heart failure, cerebrovascular or renal disease); no examination findings (5: confusion, RR ≥ 30, SBP < 90, temperature < 35 or ≥ 40 °C, HR ≥ 125).

Step 2 (others): points = age in years (women: age − 10) + points for each present item; classes: II ≤ 70; III 71–90; IV 91–130; V > 130.

References

Identifier: psi-port

Original clinical content: Brazilian Portuguese.

Method version

PSI/PORT/Fine 1997: class I rule and stage 2 scores I–V; not CURB-65

psi-port@native-2026-10-05+d996262013cf

Source for the active edition

The bibliographic edition identifies the source. By itself, it proves neither full conformity of the formula nor clinical approval.

Synthetic cases checked (6)

Synthetic cases for checking the implementation, with no patient data.

Case 1

reference-001

Inputs

Sex: Male
Age: 40 years
Lives in a long-term care facility (+10): No
Active neoplasm or diagnosed in the last year (+30): No
Liver disease (cirrhosis, chronic hepatitis) (+20): No
Heart failure (+10): No
Cerebrovascular disease (+10): No
Chronic kidney disease (+10): No
Altered mental status (+20): No
Respiratory rate ≥ 30 breaths/min (+20): No
Systolic blood pressure < 90 mmHg (+20): No
Temperature < 35 °C or ≥ 40 °C (+15): No
Heart rate ≥ 125 bpm (+10): No
Arterial pH < 7.35 (+30): No
Urea ≥ 64 mg/dL (BUN ≥ 30 mg/dL) (+20): No
Sodium < 130 mEq/L (+20): No
Glucose ≥ 250 mg/dL (+10): No
Hematocrit < 30% (+10): No
PaO₂ < 60 mmHg or O₂ saturation < 90% (+10): No
Pleural effusion on radiograph (+10): No

{
  "sexo": "M",
  "idade": 40,
  "casa": false,
  "neoplasia": false,
  "hepatica": false,
  "icc": false,
  "avc": false,
  "renal": false,
  "confusao": false,
  "fr": false,
  "pas": false,
  "temp": false,
  "fc": false,
  "ph": false,
  "ureia": false,
  "sodio": false,
  "glicose": false,
  "ht": false,
  "pao2": false,
  "derrame": false
}

Expected result

{
  "cls": 1
}

Actual result

{
  "score": 0,
  "cls": 1
}

Case 2

reference-002

Inputs

Sex: Male
Age: 50 years
Lives in a long-term care facility (+10): No
Active neoplasm or diagnosed in the last year (+30): No
Liver disease (cirrhosis, chronic hepatitis) (+20): No
Heart failure (+10): No
Cerebrovascular disease (+10): No
Chronic kidney disease (+10): No
Altered mental status (+20): No
Respiratory rate ≥ 30 breaths/min (+20): No
Systolic blood pressure < 90 mmHg (+20): No
Temperature < 35 °C or ≥ 40 °C (+15): No
Heart rate ≥ 125 bpm (+10): No
Arterial pH < 7.35 (+30): No
Urea ≥ 64 mg/dL (BUN ≥ 30 mg/dL) (+20): No
Sodium < 130 mEq/L (+20): No
Glucose ≥ 250 mg/dL (+10): No
Hematocrit < 30% (+10): No
PaO₂ < 60 mmHg or O₂ saturation < 90% (+10): No
Pleural effusion on radiograph (+10): No

{
  "sexo": "M",
  "idade": 50,
  "casa": false,
  "neoplasia": false,
  "hepatica": false,
  "icc": false,
  "avc": false,
  "renal": false,
  "confusao": false,
  "fr": false,
  "pas": false,
  "temp": false,
  "fc": false,
  "ph": false,
  "ureia": false,
  "sodio": false,
  "glicose": false,
  "ht": false,
  "pao2": false,
  "derrame": false
}

Expected result

{
  "cls": 1
}

Actual result

{
  "score": 0,
  "cls": 1
}

Case 3

reference-003

Inputs

Sex: Female
Age: 70 years
Heart failure (+10): Yes
Lives in a long-term care facility (+10): No
Active neoplasm or diagnosed in the last year (+30): No
Liver disease (cirrhosis, chronic hepatitis) (+20): No
Cerebrovascular disease (+10): No
Chronic kidney disease (+10): No
Altered mental status (+20): No
Respiratory rate ≥ 30 breaths/min (+20): No
Systolic blood pressure < 90 mmHg (+20): No
Temperature < 35 °C or ≥ 40 °C (+15): No
Heart rate ≥ 125 bpm (+10): No
Arterial pH < 7.35 (+30): No
Urea ≥ 64 mg/dL (BUN ≥ 30 mg/dL) (+20): No
Sodium < 130 mEq/L (+20): No
Glucose ≥ 250 mg/dL (+10): No
Hematocrit < 30% (+10): No
PaO₂ < 60 mmHg or O₂ saturation < 90% (+10): No
Pleural effusion on radiograph (+10): No

{
  "sexo": "F",
  "idade": 70,
  "icc": true,
  "casa": false,
  "neoplasia": false,
  "hepatica": false,
  "avc": false,
  "renal": false,
  "confusao": false,
  "fr": false,
  "pas": false,
  "temp": false,
  "fc": false,
  "ph": false,
  "ureia": false,
  "sodio": false,
  "glicose": false,
  "ht": false,
  "pao2": false,
  "derrame": false
}

Expected result

{
  "score": 70,
  "cls": 2
}

Actual result

{
  "score": 70,
  "cls": 2
}

Case 4

reference-004

Inputs

Sex: Male
Age: 72 years
Pleural effusion on radiograph (+10): Yes
Lives in a long-term care facility (+10): No
Active neoplasm or diagnosed in the last year (+30): No
Liver disease (cirrhosis, chronic hepatitis) (+20): No
Heart failure (+10): No
Cerebrovascular disease (+10): No
Chronic kidney disease (+10): No
Altered mental status (+20): No
Respiratory rate ≥ 30 breaths/min (+20): No
Systolic blood pressure < 90 mmHg (+20): No
Temperature < 35 °C or ≥ 40 °C (+15): No
Heart rate ≥ 125 bpm (+10): No
Arterial pH < 7.35 (+30): No
Urea ≥ 64 mg/dL (BUN ≥ 30 mg/dL) (+20): No
Sodium < 130 mEq/L (+20): No
Glucose ≥ 250 mg/dL (+10): No
Hematocrit < 30% (+10): No
PaO₂ < 60 mmHg or O₂ saturation < 90% (+10): No

{
  "sexo": "M",
  "idade": 72,
  "derrame": true,
  "casa": false,
  "neoplasia": false,
  "hepatica": false,
  "icc": false,
  "avc": false,
  "renal": false,
  "confusao": false,
  "fr": false,
  "pas": false,
  "temp": false,
  "fc": false,
  "ph": false,
  "ureia": false,
  "sodio": false,
  "glicose": false,
  "ht": false,
  "pao2": false
}

Expected result

{
  "score": 82,
  "cls": 3
}

Actual result

{
  "score": 82,
  "cls": 3
}

Case 5

reference-005

Inputs

Sex: Male
Age: 75 years
Active neoplasm or diagnosed in the last year (+30): Yes
Urea ≥ 64 mg/dL (BUN ≥ 30 mg/dL) (+20): Yes
Lives in a long-term care facility (+10): No
Liver disease (cirrhosis, chronic hepatitis) (+20): No
Heart failure (+10): No
Cerebrovascular disease (+10): No
Chronic kidney disease (+10): No
Altered mental status (+20): No
Respiratory rate ≥ 30 breaths/min (+20): No
Systolic blood pressure < 90 mmHg (+20): No
Temperature < 35 °C or ≥ 40 °C (+15): No
Heart rate ≥ 125 bpm (+10): No
Arterial pH < 7.35 (+30): No
Sodium < 130 mEq/L (+20): No
Glucose ≥ 250 mg/dL (+10): No
Hematocrit < 30% (+10): No
PaO₂ < 60 mmHg or O₂ saturation < 90% (+10): No
Pleural effusion on radiograph (+10): No

{
  "sexo": "M",
  "idade": 75,
  "neoplasia": true,
  "ureia": true,
  "casa": false,
  "hepatica": false,
  "icc": false,
  "avc": false,
  "renal": false,
  "confusao": false,
  "fr": false,
  "pas": false,
  "temp": false,
  "fc": false,
  "ph": false,
  "sodio": false,
  "glicose": false,
  "ht": false,
  "pao2": false,
  "derrame": false
}

Expected result

{
  "score": 125,
  "cls": 4
}

Actual result

{
  "score": 125,
  "cls": 4
}

Case 6

reference-006

Inputs

Sex: Male
Age: 80 years
Lives in a long-term care facility (+10): Yes
Altered mental status (+20): Yes
Arterial pH < 7.35 (+30): Yes
Active neoplasm or diagnosed in the last year (+30): No
Liver disease (cirrhosis, chronic hepatitis) (+20): No
Heart failure (+10): No
Cerebrovascular disease (+10): No
Chronic kidney disease (+10): No
Respiratory rate ≥ 30 breaths/min (+20): No
Systolic blood pressure < 90 mmHg (+20): No
Temperature < 35 °C or ≥ 40 °C (+15): No
Heart rate ≥ 125 bpm (+10): No
Urea ≥ 64 mg/dL (BUN ≥ 30 mg/dL) (+20): No
Sodium < 130 mEq/L (+20): No
Glucose ≥ 250 mg/dL (+10): No
Hematocrit < 30% (+10): No
PaO₂ < 60 mmHg or O₂ saturation < 90% (+10): No
Pleural effusion on radiograph (+10): No

{
  "sexo": "M",
  "idade": 80,
  "casa": true,
  "confusao": true,
  "ph": true,
  "neoplasia": false,
  "hepatica": false,
  "icc": false,
  "avc": false,
  "renal": false,
  "fr": false,
  "pas": false,
  "temp": false,
  "fc": false,
  "ureia": false,
  "sodio": false,
  "glicose": false,
  "ht": false,
  "pao2": false,
  "derrame": false
}

Expected result

{
  "score": 140,
  "cls": 5
}

Actual result

{
  "score": 140,
  "cls": 5
}

Code and reproducibility

This tool’s code on GitHub

Download code and tests

Sources, version and reproduction instructions

README

Local installation

Code license: Apache-2.0

Guidelines and conditions

This repository’s license applies to the code. Third-party instruments, questionnaires, data and models remain subject to their owners’ conditions.

The code tests are technical checks. Clinical approval and professional translation review are recorded separately.

Relationship with cancer research

General context — relationship to be defined

A resource for general clinical contexts. This edition does not assign a specific oncological relationship; selecting it for a study requires a justified question, population and purpose.