Tactile fremitus refers to vibrations felt on the chest wall due to secretions. Which of the following terms is most accurate for tactile fremitus in clinical practice?

• A. Vocal fremitus
• B. Rhonchi
• C. Rales
• D. Tactile fremitus

Answer: (D)

Fremitus is the vibration that travels from the larynx and airways to the chest wall when a person speaks. Tactile fremitus specifically refers to the vibrations felt by palpation of the chest wall as the patient vocalizes. In clinical practice, this palpable chest-wall vibration is described as tactile fremitus, because we are detecting it by touch rather than hearing it with a stethoscope. Secretions don’t generate these vibrations; they can alter how well vibrations travel by changing tissue density, but the source of the vibration is the voice. The other terms listed refer to different concepts (lung sounds like rhonchi or rales) or to the voice-based resonance, but the standard descriptor for the palpable chest-wall vibration is tactile fremitus.