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@PNEUMONIA
@Introduction
Pneumonia is the most common infectious cause of death.
It occurs in persons of all ages, although the clinical manifestations are most severe in the
very young,
elderly, and
chronically ill.
@Pathophysiology
Respiratory pathogens enter the lower respiratory tract by one of three routes:
1) direct inhalation of infectious droplets;
2) aspiration of oropharyngeal contents; or
3) hematogenous spread from another infection site.
@Etiology
Pneumonia is caused by a variety of viral and bacterial pathogens.
pneumonia is often categorized as either community-acquired or hospital-acquired.
community-acquired pneumonia (CAP).
hospital-acquired pneumonia (HAP).
ventilator-associated pneumonia (VAP).
Aspiration pneumonia(AP).
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