PESI score = age in years plus all applicable predictor points.

Predictor	Points
Age	Age in years
Male sex	+10
Active cancer	+30
Heart failure	+10
Chronic lung disease	+10
Heart rate at least 110/min	+20
Systolic blood pressure below 100 mm Hg	+30
Respiratory rate at least 30/min	+20
Temperature below 36 C	+20
Altered mental status	+60
Oxygen saturation below 90%	+20

Pulmonary Embolism Severity Index (PESI)