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Aspiration pneumonia is a type of lung infection that is due to a relatively large amount of material from the stomach or mouth entering the lungs. [1] Signs and symptoms often include fever and cough of relatively rapid onset. [ 1 ]
Pulmonary aspiration is the entry of solid or liquid material such as pharyngeal secretions, food, drink, or stomach contents from the oropharynx or gastrointestinal tract, into the trachea and lungs. [1] When pulmonary aspiration occurs during eating and drinking, the aspirated material is often colloquially referred to as "going down the ...
Aspiration pneumonia: Particles entering the lungs can cause infections. [8] Structural changes: Repeating obstruction or trauma may scar or narrow the upper airway. This is called subglottic or tracheal stenosis. [9] [page needed] Voice changes: Chronic damage to the vocal cords may cause permanent voice changes or loss. [1] [page needed]
In adults the most common source of aspiration pneumonia is aspiration of oropharyngeal secretions or gastric contents. In children the most common cause is aspiration of infected amniotic fluid, or vaginal secretions. Severe periodontal or gingival diseases are important risk factors for establishment of an anaerobic pleuropulmonary infection.
High-resolution CT image showing ground-glass opacities in the periphery of both lungs in a patient with COVID-19 (red arrows). The adjacent normal lung tissue with lower attenuation appears as darker areas. Ground-glass opacity (GGO) is a finding seen on chest x-ray (radiograph) or computed tomography (CT) imaging of the lungs.
It is typically due to aspiration and alcoholism may be a risk factor, though it is also commonly implicated in hospital-acquired urinary tract infections, and COPD (chronic obstructive pulmonary disease) individuals. [9] [10] In terms of the pathophysiology of Klebsiella pneumonia the neutrophil myeloperoxidase defense against K. pneumoniae is ...
Anaerobic gram-positive cocci and microaerophilic streptococci are most frequently found in aspiration pneumonia, empyema, lung abscesses, and mediastinitis. These bacteria account for 10-20% of anaerobic isolated recovered from pulmonary infections. It is difficult to obtain appropriate culture specimens.
Pneumonia is most commonly classified by where or how it was acquired: community-acquired, aspiration, healthcare-associated, hospital-acquired, and ventilator-associated pneumonia. [42] It may also be classified by the area of the lung affected: lobar, bronchial pneumonia and acute interstitial pneumonia ; [ 42 ] or by the causative organism ...