Simplified Pulmonary Embolism Severity Index
| Parameter | Score | Risk class | Total points |
| Age>80 years | 1 | Low High | 0 ≥1 |
| Cancer* | 1 | ||
| Chronic cardiopulmonary disease | 1 | ||
| Pulse≥110 bpm | 1 | ||
| SBP<100 mm Hg | 1 | ||
| Arterial blood oxygen saturation<90%† | 1 |
*Defined as active cancer (diagnosed within last 12 months or undergoing treatment, personal communication from Prof David Jimenez).
†With or without the administration of supplemental oxygen.
SBP, systolic blood pressure.