Pulmonary embolism severity index scores: Full and simplified

Pulmonary embolism severity index (PESI) - Full
Clinical feature		Points
Age		x (eg, 65)
Male gender		10
History of cancer		30
Heart failure		10
Chronic lung disease		10
Pulse ≥110/min		20
Systolic blood pressure <100 mmHg		30
Respiratory rate ≥30/min		20
Temperature <36° Celcius		20
Altered mental status		60
Arterial oxygen saturation <90 percent		20
Class I	Low risk	<66
Class II		66 to 85
Class III	High risk	86 to 105
Class IV		106 to 125
Class V		>125
Simplified pulmonary embolism severity index (sPESI)
Clinical feature		Points
Age >80 years		1
History of cancer		1
Chronic cardiopulmonary disease		1
Pulse ≥110/min		1
Systolic blood pressure <100 mmHg		1
Arterial oxygen saturation <90 percent		1
Low risk		0
High risk		≥1

The full PESI score is rarely calculated in clinical practice since it is generally considered cumbersome. In contrast, sPESI is brief, contains a limited number of easily accessible parameters, and is therefore, much more practical.

Adapted from:

Aujesky D, Obrosky DS, Stone RA, et al. Derivation and validation of a prognostic model for pulmonary embolism. Am J Respir Crit Care Med 2005; 172:1041.
Jiménez D, Aujesky D, Moores L, et al. Simplification of the pulmonary embolism severity index for prognostication in patients with acute symptomatic pulmonary embolism. Arch Intern Med 2010; 170:1383.

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Pulmonary embolism severity index scores: Full and simplified