Egophony (British: Aegophony) is an increased resonance of voice sounds heard when auscultating the lungs, often caused by consolidated or compressed lung tissue due to an infection, pleural effusion, tumor, or congestion. It is due to enhanced transmission of high-frequency noise across fluid, such as in abnormal lung tissue, with lower frequencies filtered out. It results in a high-pitched nasal or bleating quality in the affected person's voice.

While listening to the lungs with a stethoscope, the patient is asked to say the letter "e." What is heard is a higher pitched sound that sounds like the letter "a." (Some doctors refer to this as "e to a changes.") Most commonly, this indicates pneumonia.

Similar terms are bronchophony and whispered pectoriloquy. The mechanism is the same: fluid or consolidation causes the sound of the voice to be transmitted loudly to the periphery of the lungs where it is usually not heard.

Egophony comes from the Greek word for "goat," ("aix", "aig-") in reference to the bleating quality of the sound. [cite journal | author=Sapira JD | title=About egophony | journal=Chest | year=1995 | pages=865–7 | volume=108 | issue=3 | pmid=7656646 | doi=10.1378/chest.108.3.865]


"Adam's Physical Diagnosis", by John W. Burnside, M.D.

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  • Egophony — E*goph o*ny, n. [Gr. ?, ?, goat + ? voice.] (Med.) The sound of a patient s voice so modified as to resemble the bleating of a goat, heard on applying the ear to the chest in certain diseases within its cavity, as in pleurisy with effusion. [1913 …   The Collaborative International Dictionary of English

  • egophony — egophonic /ee geuh fon ik/, adj. /ee gof euh nee/, n. a vocal sound heard through a stethoscope and resembling the bleating of a goat, often occurring in cases of pleurisy with effusion. [1850 55; < NL ego < Gk aigo comb. form of aíx goat (s. aig …   Universalium

  • egophony — noun A bleating sound sometimes observed in patients with various lung conditions …   Wiktionary

  • egophony — A peculiar broken quality of the voice sounds, like the bleating of a goat, heard about the upper level of the fluid in cases of pleurisy with effusion. SYN: capriloquism, tragophonia, tragophony. [G. aix (aig ), goat, + phone, voice] * * *… …   Medical dictionary

  • egophony — egoph·o·ny …   English syllables

  • egophony — …   Useful english dictionary

  • egobronchophony — Egophony with bronchophony. [G. aix (aig ), goat, + bronchos, bronchus, + phone, voice] * * * ego·bron·choph·o·ny (e″go brong kofґə ne) [Gr. aix goat + bronchophony] egophony …   Medical dictionary

  • capriloquism — SYN: egophony. [L. caper, goat, + loquor, to speak] * * * ca·pril·o·quism (kə prilґo kwiz″əm) [L. caper goat + loqui to speak] egophony …   Medical dictionary

  • Crackles — ICD 10 R09.8 ICD 9 786.7 Crackles, crepitations, or rales are the clicking, rattling, or crackling noises that may be made by one or both lungs of a human with a respiratory disease dur …   Wikipedia

  • AEgophony — [AE]*goph o*ny, n. Same as {Egophony}. [1913 Webster] || …   The Collaborative International Dictionary of English

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