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Related Concept Videos

Echo01:06

Echo

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The human ear cannot distinguish between two sources of sound if they happen to reach within a specific time interval, typically 0.1 seconds apart. More than this, and they are perceived as separate sources.
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Impedances and Admittance01:23

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In the realm of AC circuits, passive circuit elements like resistors, inductors, and capacitors take on a different character when characterized by phasor voltage and current. Their behavior is expressed through impedance, a vital concept in AC circuit analysis.
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Related Experiment Video

Updated: Sep 1, 2025

Electrically Evoked Stapedius Reflex Measurements in Cochlear Implantation and Its Application in the Postoperative Fitting Process
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Electrically Evoked Stapedius Reflex Measurements in Cochlear Implantation and Its Application in the Postoperative Fitting Process

Published on: June 21, 2024

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[Correlation between acoustic immittance and ETS in eustachian tube function test].

Yali Yang1, Shijie Wang2, Shuguang Han1

  • 1Department of Otolaryngology Head and Neck Surgery，Beijing Friendship Hospital，Capital Medical University，Beijing，100050，China.

Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi = Journal of Clinical Otorhinolaryngology Head and Neck Surgery
|August 12, 2022
PubMed
Summary
This summary is machine-generated.

Acoustic immittance testing shows a correlation with eustachian tube score (ETS) in eustachian tube function tests. However, these methods are inconsistent and cannot replace each other for assessing middle ear function.

Keywords:
acoustic immittanceeustachian tube functiontympanic membrane perforation

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Area of Science:

  • Otolaryngology
  • Audiology
  • Medical Diagnostics

Background:

  • Eustachian tube dysfunction (ETD) is common in chronic suppurative otitis media.
  • Accurate assessment of ETD is crucial for effective treatment.
  • Acoustic immittance and Eustachian Tube Score (ETS) are used to evaluate ETD.

Purpose of the Study:

  • To investigate the correlation between acoustic immittance measurements and the Eustachian Tube Score (ETS).
  • To determine if acoustic immittance can predict ETS outcomes in patients with chronic suppurative otitis media.
  • To compare the diagnostic value of acoustic immittance and ETS in evaluating eustachian tube function.

Main Methods:

  • 124 ears from 107 patients with chronic suppurative otitis media and tympanic perforation were assessed.
  • Eustachian tube function was evaluated using acoustic immittance with a positive pressure balance method and the ETS.
  • Acoustic immittance results were categorized based on opening pressure, and compared with ETS, Eustachian Tube Manometry (TMM), and subjective ETS components.

Main Results:

  • Acoustic immittance showed significant correlations with ETS, TMM, and the subjective part of ETS (P<0.05).
  • Acoustic immittance results were moderately negatively correlated with ETS (r=-0.439) and TMM (r=-0.425).
  • The consistency between acoustic immittance and ETS was poor (negative kappa value), indicating significant differences.

Conclusions:

  • Acoustic immittance positive pressure balance method's open pressure is a predictor of ETS, TMM, and subjective ETS scores.
  • Lower open pressure in acoustic immittance may indicate better ETS, TMM, and subjective ETS outcomes.
  • Acoustic immittance and ETS are inconsistent and cannot replace each other; both middle ear pressure and its difference should be considered.