Textbook of Critical Care
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Pneumonia is an infection of the gas-exchanging units of the lung and has a wide spectrum of clinical severity, ranging from mild outpatient illness to severe respiratory failure and sepsis. Together, pneumonia and influenza are the eighth leading cause of death in the United States and the number one cause of death from infectious diseases. 12 Pneumonia in the community setting or within 48 hours following admission is termed community-acquired pneumonia (CAP). The “community” also includes patients with exposure to the healthcare environment, and pneumonia in such patients is referred to as “health care–associated pneumonia” (HCAP).
Critical Care | Pulmonology
Nair GB, Niederman MS. Community-Acquired Pneumonia In: Textbook of Critical Care. Philadelphia, PA: Elsevier; 2017; p. 464,476.e3.