Community-Acquired Pneumonia Severity Index (PSI) for Adults

Pneumonia Score Interpretation

References

0-50 Points:	Class I 0.1% Mortality
51-70 Points:	Class II 0.6% Mortality
71-90 Points:	Class III 0.9% Mortality
91-130 Points:	Class IV 9.3% Mortality
131-395 Points:	Class V 27.0% Mortality

1. Fine MJ, Auble TE, Yealy DM, et. al. A prediction rule to identify low-risk patients with community-acquired pneumonia. N Engl J Med. 1997; 336:243-250.
2. Morris A. ACP Journal Club. Review: CURB65, CRB65, and Pneumonia Severity Index similarly predict mortality in community-acquired pneumonia. Ann Intern Med. 2011 Apr 19;154(8):JC4-13. doi: 10.1059/0003-4819-154-8-201104190-02013. PubMed ID: 21502639
3. Steinberg DI. ACP Journal Club. Review: Risk prediction scales have different strengths and weaknesses for predicting mortality in community-acquired pneumonia. Ann Intern Med. 2011 Apr 19;154(8):JC4-12. doi: 10.1059/0003-4819-154-8-201104190-02012. PubMed ID: 21502638

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