Aspiration refers to the inhalation of foreign material, such as food, liquid, or vomit, into the airways or lungs, which can lead to aspiration pneumonia or other respiratory complications. This process is clinically significant as it can result in airway obstruction, infection, or acute respiratory distress, particularly in patients with impaired swallowing or consciousness. A common example is aspiration during sedation or in individuals with neurological disorders affecting swallowing reflexes.

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