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PESI Pulmonary Embolism Severity Index Calculator

Risk score for 30-day all-cause mortality in acute PE.

Compute the PESI (Pulmonary Embolism Severity Index) score for risk-stratifying acute PE patients. Base score = age in years, plus: male +10, cancer +30, CHF +10, chronic pulmonary disease +10, HR ≥ 110 +20, sBP < 100 +30, RR ≥ 30 +20, temp < 36 +20, altered mental status +60, SpO₂ < 90% +20. Risk class I ≤ 65 (very low 1.1 % 30-day mort); II 66-85; III 86-105; IV 106-125; V > 125 (high 24 %).

Daniel Oh By Daniel Oh
Published Last reviewed 1 min read

Inputs

years

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

Base = age; add component points; classify by total.

In depth

Compute the PESI (Pulmonary Embolism Severity Index) score for risk-stratifying acute PE patients. Base score = age in years, plus: male +10, cancer +30, CHF +10, chronic pulmonary disease +10, HR ≥ 110 +20, sBP < 100 +30, RR ≥ 30 +20, temp < 36 +20, altered mental status +60, SpO₂ < 90% +20. Risk class I ≤ 65 (very low 1.1 % 30-day mort); II 66-85; III 86-105; IV 106-125; V > 125 (high 24 %).