Pulmonary Embolism Severity Index (PESI)
30-day mortality class after acute PE.
Inputs
0 of 2years
SexUsed by the equation
Cancer
Heart failure
Chronic lung disease
Heart rate 110 or higher
Systolic BP below 100
Respiratory rate 30 or higher
Temperature below 36 °C
Altered mental status
SaO₂ below 90%
Patient values are shared with every calculator.
When to use
- Confirmed PE, deciding on early discharge.
Pearls and pitfalls
- Classes I–II are low risk and may qualify for outpatient treatment.
- sPESI is simpler with similar accuracy.
Why use
The original, well-validated PE prognostic score.
| Criterion | Points |
|---|---|
| Cancer | +30 |
| Heart failure | +10 |
| Chronic lung disease | +10 |
| Heart rate 110 or higher | +20 |
| Systolic BP below 100 | +30 |
| Respiratory rate 30 or higher | +20 |
| Temperature below 36 °C | +20 |
| Altered mental status | +60 |
| SaO₂ below 90% | +20 |