What is the risk of mortality in bacterial pneumonia?

Updated: Sep 30, 2020
  • Author: Justina Gamache, MD; Chief Editor: Guy W Soo Hoo, MD, MPH  more...
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Even with appropriate treatment, the risk of mortality may be high if the host is ill or infirm. The Pneumonia Severity Index (PSI) may be used as a guide to determine a patient's mortality risk, but it tends to overestimate the actual risk in many cases (see Pneumonia severity index under Risk Stratification in Clinical Presentation). Particularly virulent organisms, such as Klebsiella and Legionella species, may confer a higher mortality rate.

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