PSI Calculator
Calculate Pneumonia Severity Index (PORT Score) for community-acquired pneumonia assessment
Patient Assessment
Basic Demographics
Patient Characteristics
Physical Examination Findings
Laboratory Findings
PSI Assessment Results
⚠️ Medical Disclaimer: This calculator is for educational purposes only. PSI scores should be interpreted by qualified healthcare professionals in conjunction with clinical judgment. Always consult your doctor for pneumonia management and treatment decisions.
PSI Classification
Quick Reference
Used for community-acquired pneumonia
Higher scores = higher mortality risk
Guides hospitalization decisions
Also known as PORT Score
Understanding PSI (Pneumonia Severity Index)
What is PSI?
The Pneumonia Severity Index (PSI), also known as the Pneumonia Outcomes Research Team (PORT) Score, is a clinical prediction tool used to assess the severity of community-acquired pneumonia and guide treatment decisions, particularly regarding hospitalization.
Clinical Applications
- •Hospitalization decision making
- •Risk stratification for outpatient treatment
- •Resource allocation and bed management
- •Quality improvement initiatives
PSI vs CURB-65
| Aspect | PSI | CURB-65 |
|---|---|---|
| Complexity | More complex | Simpler |
| Variables | 20 variables | 5 variables |
| Low-risk ID | Better | Good |
Important: PSI is more accurate for identifying low-risk patients suitable for outpatient treatment, while CURB-65 is simpler and faster to calculate.
Treatment Recommendations by Class
| PSI Class | Score Range | Mortality | Recommendation |
|---|---|---|---|
| Class I-II | ≤90 | 0.1-0.7% | Outpatient treatment |
| Class III | 91-130 | 0.9-2.8% | Brief hospitalization or close monitoring |
| Class IV | 131-170 | 8.2-9.3% | Hospitalization required |
| Class V | >170 | 27-31% | Immediate hospitalization ± ICU |