Aspiration Pneumonia
Overview
Plain-Language Overview
Aspiration pneumonia is a lung infection that happens when food, liquid, or vomit accidentally enters the lungs instead of the stomach. This condition affects the respiratory system, causing inflammation and infection in the lungs. It often occurs in people who have trouble swallowing or coughing, such as those with neurological problems or impaired consciousness. The main health impact is difficulty breathing, coughing, and sometimes fever. If untreated, it can lead to serious complications like lung abscess or respiratory failure. Recognizing the signs early is important for managing the infection and preventing further lung damage.
Clinical Definition
Aspiration pneumonia is an infectious pulmonary condition caused by the inhalation of oropharyngeal or gastric contents into the lower respiratory tract. The core pathology involves inflammation and infection of the lung parenchyma, typically due to mixed aerobic and anaerobic bacteria from the oral flora. It commonly occurs in patients with impaired airway protection mechanisms, such as those with neurologic deficits, altered mental status, or esophageal dysfunction. The clinical significance lies in its potential to cause severe respiratory compromise, lung abscess, and systemic infection. Radiographically, it often presents with infiltrates in dependent lung segments. Early identification and treatment are critical to reduce morbidity and mortality associated with this condition.