Aspiration Pneumonia

Aspiration pneumonia is a type of lung infection due to a relatively large amount of material from the stomach or mouth/nasal pharynx entering the lungs.

There are four types of aspiration syndromes. Aspiration of large volume of non-infectious gastric contents   causes a chemical pneumonitis. Aspiration of bacteria from oral and pharyngeal areas causes aspiration pneumonia. Aspiration of oil (eg, mineral oil or vegetable oil) causes exogenous lipoid pneumonia.Aspiration of a foreign body may cause an acute respiratory emergency and, in some cases, predispose t to bacterial pneumonia.

Historically, aspiration pneumonia referred to an infection caused by a . . .

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