Pulmonary Embolism Severity Index (PESI)

Predicts 30-day outcome of patients with pulmonary embolism using 11 clinical criteria.


History of Cancer

History of Heart Failure

History of Chronic Lung Disease

Heart Rate ≥ 110

Systolic BP < 100 mm Hg

Respiratory Rate ≥ 30

Temperature < 36°C / 96.8°F

Altered Mental Status

  • Disorientation
  • lethargy
  • stupor
  • coma

O2 Saturation < 90%


Source: Aujesky D, Obrosky DS, Stone RA, Auble TE, Perrier A, Cornuz J, Roy PM, Fine MJ. Derivation and validation of a prognostic model for pulmonary embolism. Am J Respir Crit Care Med. 2005 Oct 15;172(8):1041-6. Epub 2005 Jul 14. PubMed PMID: 16020800; PubMed Central PMCID: PMC2718410.