Pulmonary Embolism Severity Index variables
| Variable | Points |
| Age | 1 per year |
| Male sex | 10 |
| Cancer | 30 |
| Heart failure | 10 |
| Chronic lung disease | 10 |
| Heart rate >110 beats·min−1 | 20 |
| Systolic blood pressure <100 mmHg | 30 |
| Respiratory rate ≥30 breaths·min−1 | 20 |
| Body temperature <36°C | 20 |
| Disorientation, lethargy, stupor, coma | 60 |
| Sa,O2 <90% | 20 |
Sa,O2: arterial oxygen saturation. Reproduced from [48] with permission from the publisher.