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Controversy about the eustachian tube function.

J Marquet1

  • 1University of Antwerp, E.N.T. Department, Berchem/Antwerp.

Acta Oto-Rhino-Laryngologica Belgica
|January 1, 1989
PubMed
Summary
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The Eustachian tube

Area of Science:

  • Otolaryngology
  • Physiology
  • Anatomy

Background:

  • The traditional understanding of Eustachian tube function is debated.
  • Gas exchange via vascular diffusion may occur in the antromastoid cavity, leading to overpressure.

Purpose of the Study:

  • To review the classic view on Eustachian tube function.
  • To propose a revised understanding of Eustachian tube mechanics.

Main Methods:

  • Literature review and theoretical analysis.
  • Examination of physiological mechanisms involved in middle ear pressure regulation.

Main Results:

  • Gas exchange by vascular diffusion is proposed to occur in the antromastoid cavity.
  • This cavity develops an overpressure that is equalized by the Eustachian tube.

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Conclusions:

  • The classic view of Eustachian tube function requires re-evaluation.
  • Synergic activity of the tensor tympani muscle and the Eustachian tube equalizes middle ear pressure.