What factors increase the risk of morbidity and mortality associated with community-acquired pneumonia (CAP)?

Updated: Oct 31, 2019
  • Author: Stephanie L Baer, MD; Chief Editor: Michael Stuart Bronze, MD  more...
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Morbidity and mortality associated with CAP are most common in elderly patients and immunocompromised hosts.

Other factors that may portend an increased risk of morbidity and mortality in individuals with CAP include significant comorbidities such as structural lung disease or cancer and presenting signs of severe infection such as an increased respiratory rate, hypotension, fever, multilobar involvement, anemia, and hypoxia. [34] An elevated procalcitonin level may also be associated with an increased mortality risk, although the specific threshold for increased risk remains to be determined. [12]

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