Examination by tapping the surface to determine density of a body area is called?

Examination by tapping the surface to determine density of a body area is called?

• A. Tapping
• B. Auscultation
• C. Palpation
• D. Percussion

Answer: (D)

Percussion is the examination that uses tapping to reveal density differences beneath the surface. By tapping with the fingertips, you generate sounds that vary depending on what lies under the area—air produces a resonant or tympanic sound, while fluid or solid tissue yields a dull sound. This helps estimate organ size and detect abnormal collections like fluid, gas, or masses. It’s distinct from palpation, which involves feeling with the hands, and auscultation, which involves listening with a stethoscope rather than generating sounds by tapping.

Percussion is the examination that uses tapping to reveal density differences beneath the surface. By tapping with the fingertips, you generate sounds that vary depending on what lies under the area—air produces a resonant or tympanic sound, while fluid or solid tissue yields a dull sound. This helps estimate organ size and detect abnormal collections like fluid, gas, or masses. It’s distinct from palpation, which involves feeling with the hands, and auscultation, which involves listening with a stethoscope rather than generating sounds by tapping.