Table 3

Pulmonary Embolism Severity Index

ParameterScoreRisk classTotal points
Demographic featuresI: very lowII: lowIII: intermediateIV: highV: very high≤6566–8586–105106–125≥126
AgeAge in years
Male sex+10
Comorbid conditions
Heart failure+10
Chronic lung disease+10
Clinical findings
Pulse ≥ 110 bpm+20
Systolic blood pressure < 100 mm Hg+30
RR ≥ 30/min+20
Temperature < 36°C+20
Altered mental status*+60
Arterial blood oxygen saturation < 90%†+20
  • *Defined as disorientation, lethargy, stupor or coma.

  • †With or without the administration of supplemental oxygen.