Which statement about aspiration is correct?

• A. Fluids go into airways.
• B. Air enters the stomach.
• C. Solid material enters the airway.
• D. Blood enters the airway.

Answer: (A)

Aspiration means material from the mouth, pharynx, or stomach entering the airway, which can include liquids, solids, or secretions and may lead to airway obstruction, chemical irritation, or infection. The statement about fluids entering the airways is correct because liquids such as vomit, saliva, or swallowed liquids can be inhaled into the trachea and lungs, which is a classic and common way aspiration occurs in clinical settings. Solid material entering the airway is also a form of aspiration, but the fluids description best captures the general mechanism and is the most frequently encountered scenario in EMS. The other options don’t describe aspiration broadly: air entering the stomach isn’t aspiration, and while blood or solid material can enter the airway, those are more specific instances rather than the general concept.