Table 3.

Pulmonary Embolism Severity Index

Parameter	Score	Risk class	Total points
Demographic features		I: very low II: low III: intermediate IV: high V: very high	≤65 66–85 86–105 106–125 ≥126
Age	Age in years
Male sex	+10
Comorbid conditions
Cancer	+30
Heart failure	+10
Chronic lung disease	+10
Clinical findings
Pulse≥110 bpm	+20
SBP<100 mm Hg	+30
RR≥30/min	+20
Temp<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.

RR, respiratory rate; SBP, systolic blood pressure.