Which percussion finding is most consistent with emphysema?

• A. Hyperresonance
• B. Dullness
• C. Flatness
• D. Tympany

Answer: (A)

Hyperresonance signals hyperinflation from air trapping in the lungs. In emphysema, destruction of the elastic tissue allows the lungs to hold more air, so the chest is more air-filled and percussion produces a louder, longer sound than normal. This hyperresonant note is a classic clue for obstructive airways diseases like emphysema. By contrast, dullness points to fluid or solid tissue in the chest (such as effusion or consolidation), flatness suggests very dense tissue or a solid mass, and tympany is more typical of gas in the gastrointestinal tract rather than the lungs. So the hyperresonant finding best fits emphysema.