A thin liquid is consumed and sits above the vocal folds but does not clear. How is this classified?

• A. Aspiration
• B. Penetration
• C. Supraglottic swallowing
• D. None of the above

Answer: (B)

Understanding swallow safety terminology: the key distinction is where the material goes relative to the vocal folds. If liquid enters the laryngeal vestibule but stays above the vocal folds, it’s called penetration. If it goes below the vocal folds into the trachea, that’s aspiration. In this case, the thin liquid sits above the vocal folds and does not clear, so this is penetration. Supraglottic swallowing is a technique used to protect the airway, not a classification of a swallow event, so it doesn’t apply here. None of the above isn’t correct because penetration accurately describes the situation.