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The Middle Ear : The Role of Ventilation in Disease and Surgery - H. Takahashi

The Middle Ear : The Role of Ventilation in Disease and Surgery

Hardcover ISBN: 9784431703068
Number Of Pages: 105

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The middle ear is an organ that, like the lung, must maintain an aerated cavity within it to carry out its function. When hypoventilation occurs in the lung it threatens the maintenance of life, when it occurs in the middle ear it causes loss of hearing. For the middle ear to fulfill its vital sound-conduction function, its pressure must be maintained at approximately atmospheric level. The eustachian tube has long been known to play a key role in pressure regulation, but later research has revealed that transmucosal gas exchange is as important as the function of the eustachian tube, and that the ventilatory physiology of the middle ear is maintained by these two mechanisms in tandem. The findings presented in this volume answer many questions about ventilation and pressure regulation of the middle ear, and should be valuable to clinical practitioners in choosing appropriate modes of treatment for pathological conditions such as cholesteatoma and otitis media.

Preface
Middle-Ear Physiology: Ventilation and Pressure Regulationp. 1
Pressure Regulation by the Eustachian Tubep. 2
Pressure Regulation by Transmucosal Gas Exchangep. 8
Interrelation of the Eustachian Tube and Gas Exchangep. 16
Middle-Ear Pathophysiology After Ear Surgeryp. 21
Transmucosal Gas Exchange Function After Ear Surgeryp. 21
Mastoid Aeration After Ear Surgeryp. 28
Posterior Canal-Wall Retraction After Ear Surgeryp. 39
Choice of Mode of Ear Surgeryp. 49
Canal-Wall-Up or Canal-Wall-Down?p. 50
Choice of Mode of Ear Surgery from the Viewpoint of Middle-Ear Ventilationp. 51
"Soft-Wall Reconstruction" of the Posterior Canal Wallp. 52
Anterior Tympanotomy, Posterior Tympanotomyp. 57
Cholesteatoma in Relation to Middle-Ear Ventilationp. 63
Analysis of Cholesteatoma After Surgery for Noncholesteatomatous Otitis Mediap. 64
Pathophysiology of Cholesteatomap. 70
The Change from OME in Children to Cholesteatomap. 76
Cholesteatoma and a Retraction Pocketp. 83
Pathogenesis of Cholesteatomap. 86
Management of Cholesteatomap. 89
Referencesp. 97
Subject Indexp. 103
Table of Contents provided by Blackwell. All Rights Reserved.

ISBN: 9784431703068
ISBN-10: 4431703063
Audience: Professional
Format: Hardcover
Language: English
Number Of Pages: 105
Publisher: SPRINGER VERLAG GMBH
Country of Publication: JP
Dimensions (cm): 23.39 x 15.6  x 0.79
Weight (kg): 0.35