In the United States, community-acquired pneumonia (CAP) in adults results in approximately 600,000 hospital admissions annually and ranks as the sixth leading cause of death. The mortality rate from CAP varies dramatically depending on the patient’s severity of illness at presentation and underlying comorbid conditions. In the outpatient setting, the mortality rate is <1–5%; however, once patients require hospitalization, the mortality rate approaches 12%. Of those patients with CAP hospitalized, between 18 and 36% require treatment in an ICU. The mortality of these patients is about 35%. While approximately 20% of patients admitted to the ICU with CAP are in septic shock, the mortality of these patients may be as high as 60%.
KeywordsChronic Obstructive Pulmonary Disease Mycoplasma Pneumoniae Eosinophilic Pneumonia Cryptogenic Organize Pneumonia Influenza Pneumonia