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PSI / PORT Score (Pneumonia Severity Index)
Pulmonology / Infectious Disease
The Pneumonia Severity Index (PSI/PORT) stratifies community-acquired pneumonia patients into risk classes I–V. Higher classes predict greater 30-day mortality and guide admission decisions. Score updates in real time.
Demographics
Comorbidities
Physical Exam Findings
Lab & Radiology
Reference Table
| Class | Points | 30-day Mortality | Disposition |
|---|---|---|---|
| I | <50 (special criteria) | 0.1% | Outpatient |
| II | ≤70 | 0.6% | Outpatient |
| III | 71–90 | 0.9% | Outpatient or brief admit |
| IV | 91–130 | 9.3% | Inpatient |
| V | >130 | 27% | Inpatient/ICU |
Clinical Notes
PSI Class I requires: male <50 years old, no comorbidities, no nursing home residence, normal vitals, normal mental status.
PSI/PORT is more complex than CURB-65 but provides more granular risk stratification, especially for lower-risk patients. Preferred by many guidelines for outpatient vs. inpatient decisions.
PSI/PORT is more complex than CURB-65 but provides more granular risk stratification, especially for lower-risk patients. Preferred by many guidelines for outpatient vs. inpatient decisions.
For educational use only. Not a substitute for clinical judgment.
